BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Protecting LHC IP1/IP5 components against radiation resulting from colliding beam interactions DTSTART;VALUE=DATE-TIME:20030130T100000Z DTEND;VALUE=DATE-TIME:20030130T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a032377@cern.ch DESCRIPTION:Beam-induced energy deposition in the LHC high luminosity inte raction region (IR) components due to both pp-collisions and beam loss in the IR vicinity is a significant challenge for the design of the high lumi nosity insertions. In this talk the results of thorough optimization and comprehensive MARS calculations are summarized for the LHC lattice\, versi on 6.4\, for the updated IP1 and IP5 layouts and a baseline pp-collision s ource term. Power density\, power dissipation\, particle fluxes and spectr a\, accumulated dose and residual dose rates are studied in the components of the inner triplets including their TAS absorbers\, the TAN neutral bea m absorbers\, separation dipoles\, and quadrupoles of the outer triplets a nd possible collimators there. The current design is proved to provide the best safety margin under realistic engineering constraints.Information: h ttp://cern.ch/AB-seminar/\nOrganiser: Werner Herr (AB/ABP)\n\nhttp://indic o.cern.ch/conferenceDisplay.py?confId=a032377 LOCATION:CERN SL Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a032377 END:VEVENT BEGIN:VEVENT SUMMARY:High-intensity and high-density beams in the PS DTSTART;VALUE=DATE-TIME:20030213T100000Z DTEND;VALUE=DATE-TIME:20030213T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a032396@cern.ch DESCRIPTION:The production of high-intensity and high-density beams has be en a constant activity in the PS since many years. The different beam stud ies which have been performed so far on the bottlenecks of the machine\, i njection process\, low energy flat bottom\, transition crossing\, and ejec tion\, will be reviewed. The ongoing studies and future activities will al so be discussed.Information: http://cern.ch/AB-seminar/Organiser(s): Werne r Herr (AB/ABP)\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=a0323 96 LOCATION:CERN PS Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a032396 END:VEVENT BEGIN:VEVENT SUMMARY:MULTITURN EXTRACTION USING ADIABATIC CAPTURE OF CHARGED PARTICLES IN STABLE ISLANDS OF PHASE SPACE DTSTART;VALUE=DATE-TIME:20030313T100000Z DTEND;VALUE=DATE-TIME:20030313T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a032397@cern.ch DESCRIPTION:A novel method for multiturn extraction from a circular partic le accelerator is presented\, based on trapping particles into islands of phase space generated by nonlinear resonances. By appropriate use of sextu poles and octupoles\, stable islands can be created at small amplitude in phase space. By varying the linear tune\, particles can be trapped inside these islands and then transported towards higher amplitudes for extractio n. Numerical simulations as well as first experimental results will be pre sented. Also\, future activities will be discussed.Information: http://cer n.ch/AB-seminar/Organiser(s): Werner Herr (AB/ABP)\n\nhttp://indico.cern.c h/conferenceDisplay.py?confId=a032397 LOCATION:CERN 6-2-024 URL:http://indico.cern.ch/conferenceDisplay.py?confId=a032397 END:VEVENT BEGIN:VEVENT SUMMARY:Diamonds for H- charge exchange injection DTSTART;VALUE=DATE-TIME:20030320T100000Z DTEND;VALUE=DATE-TIME:20030320T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a032398@cern.ch DESCRIPTION:In order to increase the intensity in proton machines\, the ch arge exchange injection scheme has been widely used since the 70's and is a crucial element in e.g. the high luminosity option discussed for the fut ure of the LHC. The advantage of injecting particles in another charge sta te (H-) than the stored one (H+) is that it enables accumulation of like p articles in an already occupied volume of phase-space. However\, the charg e exchange injection necessarily takes place by some means of stripping wh ich may increase the emittance of the stored beam. In the seminar I will d iscuss the many advantages offered by e.g. channeling through the use of d iamonds instead of amorphous carbon as the stripping medium.Organiser(s): Werner Herr (AB/ABP)\nInformation: http://cern.ch/AB-seminar/\n\nhttp://in dico.cern.ch/conferenceDisplay.py?confId=a032398 LOCATION:CERN SL Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a032398 END:VEVENT BEGIN:VEVENT SUMMARY:The beta-beam: acceleration and storage of radioactive ions for an electron neutrino factory DTSTART;VALUE=DATE-TIME:20030410T090000Z DTEND;VALUE=DATE-TIME:20030410T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a032381@cern.ch DESCRIPTION:The term beta-beam has been coined for the production of a pur e beam of electron neutrinos or their antiparticles through the decay of r adioactive ions circulating in a storage ring. This concept requires radio active ions to be accelerated to a Lorentz gamma of 150 for 6He and 60 for 18Ne. The neutrino source itself consists of a storage ring for this ener gy range\, with long straight sections in line with the experiment(s). Suc h a decay ring does not exist at CERN today\, nor does a high-intensity pr oton source for the production of the radioactive ions. Nevertheless\, the existing CERN accelerator infrastructure could be used as this would stil l represent an important saving for a beta-beam facility. In this talk I w ill present the so-called CERN base-line scenario and give a summary of th e outcome of the "beta-beam" workshop\, which was held as part of this yea rs electro-weak Moriond meeting in Les Arcs.Organiser(s): Werner Herr (AB/ ABP)Information: http://cern.ch/AB-seminar/\n\nhttp://indico.cern.ch/confe renceDisplay.py?confId=a032381 LOCATION:CERN PS Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a032381 END:VEVENT BEGIN:VEVENT SUMMARY:Magnetic horns for CERN neutrino beams from the sixties to 2003 DTSTART;VALUE=DATE-TIME:20030424T090000Z DTEND;VALUE=DATE-TIME:20030424T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a032382@cern.ch DESCRIPTION:Magnetic horns are a fundamental instrument in the generation of neutrino beams. Following technical basics\, a description of the three main experimental areas and their horn systems is given : neutrino beam i n the South East Area at the PS in the 60's till 1975\, West Area Neutrino Facility at the SPS from 1976 to 1998 and the present horn construction p roject for the CNGS neutrino beam from CERN to Gran Sasso.Organiser(s): We rner Herr (AB/ABP)More information: http://cern.ch/AB-seminar/\n\nhttp://i ndico.cern.ch/conferenceDisplay.py?confId=a032382 LOCATION:CERN SL Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a032382 END:VEVENT BEGIN:VEVENT SUMMARY:First cold anti-hydrogen production and detection - The ATHENA exp eriment DTSTART;VALUE=DATE-TIME:20030508T090000Z DTEND;VALUE=DATE-TIME:20030508T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a032383@cern.ch DESCRIPTION:ATHENA is an international collaboration whose aim is the dire ct comparison between the properties of both hydrogen and anti-hydrogen at omic systems. This would allow measurements of high accuracy on CPT as wel l as gravitational effect on antimatter. In August 2002 ATHENA took a majo r step in this direction being the first to produce and detect anti-hydrog en atoms at cryogenic temperature. A short basic level introduction for no n-specialists on the direct experimental applications of cold anti-hydroge n will be followed by a description of the various experimental facility c omponents\, their task and their performances. In this framework special a ttention will be devoted to non-neutral plasma traps and the associated di agnostics. The absolute anti-hydrogen production rate and the signal to no ise ratio will be discussed. The results of production rate versus tempera ture with their implications on the recombination mechanisms will be given . Finally the future plans of the collaboration will also be illustrated.I nformation: http://cern.ch/AB-seminar/Organiser(s): Werner Herr (AB/ABP)\n \nhttp://indico.cern.ch/conferenceDisplay.py?confId=a032383 LOCATION:CERN PS Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a032383 END:VEVENT BEGIN:VEVENT SUMMARY:Review of AB Papers presented at PAC' 2003 DTSTART;VALUE=DATE-TIME:20030605T080000Z DTEND;VALUE=DATE-TIME:20030605T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a032399@cern.ch DESCRIPTION:• Oral presentations start at 10.00 hrs.R. AssmannDesigning and building a collimation system for the high intensity LHC beamH. Frisch holz RF power generation in LHC M. Giovannozzi Adiabatic beam trapping i n stable islands of tranverse phase space: measurement results at the CERN Proton Synchrotron S. Redaelli Colliding nanobeams in CLIS with magnets stabilized to the sub-nm level F. Tecker Bunch frequency multiplication in the CLIC test facility CTF3 W. Wünsch A demonstration of high gradie nt acceleration F. Zimmermann Beam-beam interaction: electron cloud and intra-beam scattering for superbunchesA. VerdierTransmission of muons in a n AG funneling system• Posters will be on display during the whole week on the walls of buildings 8 and 9 (1st floor) as well as building 6 (2nd f loor).Organiser: Simon Baird (replacing W. Herr)\n\nhttp://indico.cern.ch/ conferenceDisplay.py?confId=a032399 LOCATION:CERN PS Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a032399 END:VEVENT BEGIN:VEVENT SUMMARY:Summary of the LHC Controls Project Workshop DTSTART;VALUE=DATE-TIME:20030619T090000Z DTEND;VALUE=DATE-TIME:20030619T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a032400@cern.ch DESCRIPTION:The Fourth Workshop on LHC Controls (12-13 June\, 2003) will f ocus on the preparation of systems required for hardware commissioning. Se ssions will deal with the underlying Technical Services\, the Common Contr ols Facitities and finally the Control of Systems directly involved with S ector Commisioning from 2005. The session chairs will present a 20' summar y of each session.Information: http://cern.ch/AB-seminar/Organiser(s): Wer ner Herr / AB-ABP\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=a03 2400 LOCATION:CERN SL Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a032400 END:VEVENT BEGIN:VEVENT SUMMARY:How EDMS can help you to manage your equipment DTSTART;VALUE=DATE-TIME:20030904T090000Z DTEND;VALUE=DATE-TIME:20030904T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a035145@cern.ch DESCRIPTION:The CERN EDMS is a suite of products for managing documents an d technical data\, provided and supported by EST division and used extensi vely for LHC and experiments. The usage of EDMS for other machines is stil l very limited. The reasons for this are not technical but based on a lack of perception of what the system can offer. To encourage more effective u se of EDMS in the AB context\, its functionality\, capabilities and advant ages must be explained and understood. This presentation aims to demonstra te where EDMS can help in your daily work on the accelerator complex.Organ iser(s): Werner Herr (AB/ABP)More information: http://cern.ch/AB-seminar/\ n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=a035145 LOCATION:CERN PS Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a035145 END:VEVENT BEGIN:VEVENT SUMMARY:ICARUS T3000 (CNGS-2): A Second-Generation Proton Decay Experiment and Neutrino Observatory at the Gran Sasso Laboratory DTSTART;VALUE=DATE-TIME:20031113T100000Z DTEND;VALUE=DATE-TIME:20031113T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a035764@cern.ch DESCRIPTION:After several years of R&D\, the ICARUS experiment\, which act s as a sort of observatory for the study of neutrinos and the instability of matter\, is starting to come together. In the summer of 2001\, the firs t module of the ICARUS T600 detector passed a series of tests. The year 20 04 should see the detector's installation at LNGS and first data-taking a t the Gran Sasso Laboratory should follow soon after. A 3000 ton version s hould be ready to receive the CNGS neutrino beam in 2006. In this seminar\ , I will attempt to describe what are the aims of the experiment\, how it is technically done\, where do we stand with the construction of the exper iment\, and what will be the requirements on the delivered beams from CERN .Organiser(s): Werner Herr / AB/ABP DivisionMore information: http://cern. ch/AB-seminar/\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=a03576 4 LOCATION:CERN PS Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a035764 END:VEVENT BEGIN:VEVENT SUMMARY:A Tutorial on Ion Sources DTSTART;VALUE=DATE-TIME:20031211T100000Z DTEND;VALUE=DATE-TIME:20031211T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a036451@cern.ch DESCRIPTION:Sources are an essential part of an accelerator chain. At CERN \, a duoplasmatron and an ECR Ion Source provide the protons and ions for the present accelerator complex and the future LHC. In this seminar we wil l look at a few of the properties of a plasma that are required to underst and how ion sources work\, followed by a description of the Penning\, Duop lasmatron and ECR ion sources.Organiser(s): Werner Herr / AB-ABP DivisionM ore information: http://cern.ch/AB-seminar/\n\nhttp://indico.cern.ch/confe renceDisplay.py?confId=a036451 LOCATION:CERN PS Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a036451 END:VEVENT BEGIN:VEVENT SUMMARY:Joint AB/LHC Seminar: Decay and Snapback in Superconducting Accele rator Magnets DTSTART;VALUE=DATE-TIME:20040115T100000Z DTEND;VALUE=DATE-TIME:20040115T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a036747@cern.ch DESCRIPTION:Strict control of temporal and spatial magnetic field uniformi ty is essential for maintaining particle beams in accelerators. In practic e\, magnets for high field superconducting particle accelerators\, such as the Large Hadron Collider\, exhibit decay of the magnetic field and its c omponents during long periods of constant current. This decay is particula rly important during the injection of particles into the machine. As soon as the particles are accelerated and the current in the magnets is ramped up\, the field rapidly recovers from the decay. This phenomenon is general ly referred to as snapback. Both decay and snapback heavily influence the beam in the machine and have to be compensated precisely in order to avoid particle loss or even a complete loss of the beam. This thesis presents t he results of an in-depth study of both effects and describes a novel dete ctor suitable for detailed analysis of the effects in magnets. In contrast to other systems\, the detector has sufficient time resolution during sna pback and can be used to conduct systematic measurements on accelerator ma gnets or compensate decay and snapback in the machine online.Organiser(s): Werner Herr / AB-ABP DivisionMore information: http://cern.ch/AB-seminar/ \n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=a036747 LOCATION:CERN PS Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a036747 END:VEVENT BEGIN:VEVENT SUMMARY:Joint AB/ISOLDE Seminar: Laser based techniques in ultratrace isot ope production\, spectroscopy and detection DTSTART;VALUE=DATE-TIME:20040121T150000Z DTEND;VALUE=DATE-TIME:20040121T160000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a04197@cern.ch DESCRIPTION:Due to the multi mega barn cross sections of resonant optical processes and the discriminatory power realized with today's state-of-the- art laser systems\, laser based techniques excel in the efficient and sele ctive manipulation of exotic species available only in minute amounts. Las er induced photo detachment from atoms (i.e. multiple step resonance excit ation and ionization) and from negative ions gives unsurpassed suppression of isobaric and isotopic interferences. The techniques are applied on the rmal as well as on fast atomic or ionic beams and can favourably be combin ed with ion traps\, bunchers and coolers or mass spectrometers. Approaches for ultra trace determination and atomic spectroscopy of rare exotic spec ies (e.g. 3He\, 41Ca\, 81\,85Kr\, 90Sr\, 135\,137Cs\, 236U or actinide iso topes)\, used e.g. in bio-medical\, environmental and fundamental studies\ , are very similar to methods required for selective isotope production at on-line facilities like ISOLDE. Background\, experimental techniques\, la ser systems and selected results will be discussed in the presentation.Org aniser(s): Werner Herr / AB-ABP Department and Klaus Blaum / PH-IS Departm entMore information: http://cern.ch/AB-seminar/Please note unusual day and time.\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=a04197 LOCATION:CERN PS Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a04197 END:VEVENT BEGIN:VEVENT SUMMARY:Status of the CNGS project DTSTART;VALUE=DATE-TIME:20040212T100000Z DTEND;VALUE=DATE-TIME:20040212T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a04393@cern.ch DESCRIPTION:The CERN neutrinos to Gran Sasso (CNGS) project\, presently un der construction\, has the aim to generate an intense muon neutrino beam i n the direction of the Gran Sasso laboratory. The progress of the CNGS pro ject is presented. After the completion of the civil engineering in June 2 003 and the construction of the beam dump\, the installation of the 1 km l ong decay pipe is now under way. The installation of general services has started in some of the tunnels and will take momentum as of August 2004. I n parallel\, the equipment design and procurement are advancing. The beam dynamics for the proton beam has been studied in detail\, and results on t he aperture of the line and the beam stability at the target have been obt ained. Detailed equipment layout and installation plans for the second hal f of 2005 are now being made. First CNGS neutrino beam is scheduled for sp ring 2006.Organiser(s): Werner Herr / AB-ABP DepartmentMore information: h ttp://cern.ch/AB-seminar/\n\nhttp://indico.cern.ch/conferenceDisplay.py?co nfId=a04393 LOCATION:CERN SL Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a04393 END:VEVENT BEGIN:VEVENT SUMMARY:Stabilization of nanometre-size particle beams in the final focus system of the Compact LInear Collider (CLIC) DTSTART;VALUE=DATE-TIME:20040226T100000Z DTEND;VALUE=DATE-TIME:20040226T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a04582@cern.ch DESCRIPTION:The Compact LInear Collider (CLIC) study at the European Organ ization for Nuclear Research (CERN) is developing the design of a 3 TeV e+ e- linear collider. The discovery reach of this machine depends on obtaini ng a luminosity of 1035 /cm2/s\, which will be done by colliding beams wit h transverse spot sizes in the nanometer range ( 60x0.7 nm2). Tolerances o n fast mechanical stability reach the 0.2 nm level. These tolerances have been considered as one of the major obstacles for building high energy e+e - linear colliders. This serious concern has been addressed by building a CERN test stand on magnet stability\, bringing together state-of-the-art s tabilization technology\, latest equipment for vibration measurements and realistic magnet prototypes. For the first time an accelerator magnet was successfully stabilized to the sub-nanometer level. The best measurements indicate transverse RMS vibration amplitudes (above 4 Hz) of (0.79 +/-0.08 ) nm horizontally and (0.43 +/-0.04) nm vertically\, maintained to a maxim um of less than (1.47 +/-0.15) nm and (1.00 +/-0.10) nm\, respectively\, o ver a period of several days. Detailed simulations have been used to predi ct the achievable luminosity of the collider based on a realistic stabilit y model. This set-up includes a 3D beam transport\, a full dynamical 2D mo del of transverse magnet vibrations (fully based on measured spectra of st abilized magnets)\, a beam-based position feedback and a complete model of the beam-beam interaction. The numerical simulation predicts that approxi mately 70 % of the CLIC goal luminosity can be achieved with the demonstra ted performance in the CERN test stand. This indicates the basic feasibili ty of the nanometer-size colliding beams foreseen in the CLIC concept.Orga niser(s): Werner Herr / AB/ABP UnitMore information: http://cern.ch/AB-sem inar/\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=a04582 LOCATION:CERN PS Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a04582 END:VEVENT BEGIN:VEVENT SUMMARY:RF amplitude modulation to suppress longitudinal coupled bunch ins tabilities DTSTART;VALUE=DATE-TIME:20040311T100000Z DTEND;VALUE=DATE-TIME:20040311T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a04786@cern.ch DESCRIPTION:Longitudinal coupled bunch instabilities play an increasingly important role in present high energy proton accelerators. A stabilization method at low cost is the modulation of the RF amplitude. Experience gain ed at the HERA proton ring and the SPS will be presented. In case the LHC will suffer unexpected from longitudinal coupled bunch instabilities\, suc h a method - if technical possible - could be of interest.Organiser(s): We rner Herr / AB-ABP DepartmentMore information: http://cern.ch/AB-seminar/\ n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=a04786 LOCATION:CERN SL Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a04786 END:VEVENT BEGIN:VEVENT SUMMARY:The EU DataGrid: Building and Operating a Large Scale Grid Infrast ructure DTSTART;VALUE=DATE-TIME:20040318T100000Z DTEND;VALUE=DATE-TIME:20040318T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a041004@cern.ch DESCRIPTION:The EU DataGrid project (EDG) has its aim to develop a large-s cale research testbed for Grid computing. During the lifetime of the Proje ct (January 2001 - March 2004) high level Grid middleware has been develop ed and a large scale testbed has been up and running continuously since th e beginning of 2002. Three application domains are using this testbed to e xplore the potential Grid computing has for their production environments: Particle Physics\, Earth Observation and Biomedics. The EDG testbed\, spa nning some 20 major sites all over Europe as well as sites in the US and A sia is one of the largest Grid infrastructures in the world. The software developed by EDG is being exploited in many national and international Gri d projects\, most notably the LCG production infrastructure. \nIn this tal k we give a brief overview on Grid computing\, present the architecture of the EDG middleware\, report on our experiences in deploying and operating a large scale Grid infrastructure and discuss how our application groups are using this infrastructure. An outlook on the future perspectives of Gr id computing is concluding the talk. Organiser(s): Werner Herr / AB-ABP De partment\, Jorge Sanchez / AB-OP DepartmentMore information: http://cern.c h/AB-seminar/\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=a041004 LOCATION:CERN PS Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a041004 END:VEVENT BEGIN:VEVENT SUMMARY:POSTPONED: Measurements of oscillator strengths in uranium using l aser techniques DTSTART;VALUE=DATE-TIME:20040408T140000Z DTEND;VALUE=DATE-TIME:20040408T150000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a041279@cern.ch DESCRIPTION:POSTPONEDLaser Isotope Separation of Uranium (Atomic Vapor Las er Isotope Separation) has stimulated these last 20 past years\, a number of studies on oscillator strength measurements. This interest for oscilla tor strength measurements is related to the importance of this parameter f or scaling a future plant\, since this parameter determines the laser flue nces needed for effective atomic photoionization. This presentation will r eview several techniques (saturation\, branching ratio+lifetime\, Rabi osc illation\, Autler Townes) which have been used by CEA at Saclay. Examples of results for atomic uranium are given\, advantages and disadvantages\, a ccuracy and limitations of each method are discussed.Organiser(s): Werner Herr / AB-ABP Department\, Klaus Blaum / PH-IS DepartmentMore information: http://cern.ch/AB-seminar/\nPlease note unusual time!\n\nhttp://indico.ce rn.ch/conferenceDisplay.py?confId=a041279 LOCATION:CERN PS Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a041279 END:VEVENT BEGIN:VEVENT SUMMARY:Exploring LHC Long-Range Beam-Beam Compensation in the SPS DTSTART;VALUE=DATE-TIME:20040429T090000Z DTEND;VALUE=DATE-TIME:20040429T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a041659@cern.ch DESCRIPTION:The ultimate performance of the LHC will likely be limited by long-range collisions between the two counter-propagating proton beams. Up to 120 such collisions will occur in the common beam pipes around the 4 p rimary interaction points. Both simulations and experience from Tevatron R un-II predict that the long-range collisions can degrade the beam stabilit y and reduce the so-called 'dynamic aperture'. As a countermeasure for the LHC\, a compensation scheme based on electro-magnetic lenses ('wires') wa s proposed. Since 2002 a first prototype wire in the SPS mimics the effect of LHC long-collisions. A dynamic shaving of the SPS beam was observed\, consistent with expectation. Its dependence on beam-wire (or beam-beam) di stance and wire (or beam) current was explored. In the 2004 SPS run\, two additional and novel wire devices will address the practicality of the pro posed compensation\, and\, in particular\, reveal the pertinent tolerances . This presentation will describe the experimental set up in the SPS\, hig hlights from the 2002-2003 SPS machine studies\, and the plan for 2004.Org aniser(s): Werner Herr (AB/ABP)More information: http://cern.ch/AB-seminar /\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=a041659 LOCATION:CERN 864-AB Auditorium- URL:http://indico.cern.ch/conferenceDisplay.py?confId=a041659 END:VEVENT BEGIN:VEVENT SUMMARY:Measurements of oscillator strengths in uranium using laser techni ques DTSTART;VALUE=DATE-TIME:20040506T090000Z DTEND;VALUE=DATE-TIME:20040506T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a041673@cern.ch DESCRIPTION:Laser Isotope Separation of Uranium (Atomic Vapor Laser Isotop e Separation) has stimulated these last 20 past years\, a number of studie s on oscillator strength measurements. This interest for oscillator streng th measurements is related to the importance of this parameter for scaling a future plant\, since this parameter determines the laser fluences neede d for effective atomic photoionization. This presentation will review seve ral techniques (saturation\, branching ratio+lifetime\, Rabi oscillation\, Autler Townes) which have been used by CEA at Saclay. Examples of results for atomic uranium are given\, advantages and disadvantages\, accuracy an d limitations of each method are discussed.Organiser(s): Werner Herr (AB/A BP)\, Klaus Blaum (PH/IS)More information: http://cern.ch/AB-seminar/\n\nh ttp://indico.cern.ch/conferenceDisplay.py?confId=a041673 LOCATION:CERN PS Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a041673 END:VEVENT BEGIN:VEVENT SUMMARY:The Ions for the LHC Project / Place: AB Auditorium\, Pr évessin\, bldg. 864 DTSTART;VALUE=DATE-TIME:20040513T090000Z DTEND;VALUE=DATE-TIME:20040513T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a041674@cern.ch DESCRIPTION:A sizeable part of the LHC physics programme will consist of c ollisions between lead ions at a design luminosity of 1027 cm-2 s-1. These will be achieved after an upgrade of the ion injector chain comprising th e Linac3\, LEIR\, PS and SPS machines. Central to the scheme is the Low En ergy Ion Ring (LEIR)\, which transforms long ion pulses from Linac3 to hig h-brilliance bunches by accumulation and electron cooling\, requiring an u ltra-high vacuum of a few 10-12 mbar. The talk covers the overall injectio n scheme for lead ions together with major hardware changes. The performan ce of the LHC as a lead-ion collider is limited by a diverse range of phen omena that are often qualitatively different from those anticipated with p rotons. Compared with earlier heavy-ion machines the LHC also enters a new regime in several ways. Ion loss mechanisms notably include nuclear elect romagnetic processes in the colliding beams. Losses limit luminosity becau se they directly affect elements of the beam environment such as supercond ucting magnets and the beam collimation system. The beam emittances will e volve under the influence of intra-beam scattering\, radiation damping and interaction with the residual gas. Both losses and emittance growth contr ibute to the decay of luminosity during a store.Organiser(s): Werner Herr (AB/ABP)More information: http://cern.ch/AB-seminar/\n\nhttp://indico.cern .ch/conferenceDisplay.py?confId=a041674 LOCATION:CERN 864-AB Auditorium- URL:http://indico.cern.ch/conferenceDisplay.py?confId=a041674 END:VEVENT BEGIN:VEVENT SUMMARY:Presentations at the European Particle Accelerator Conference 2004 (1/2) DTSTART;VALUE=DATE-TIME:20040630T080000Z DTEND;VALUE=DATE-TIME:20040630T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a042668@cern.ch DESCRIPTION:The oral presentations of the AB department at the European Pa rticle Accelerator Conference 2004 in Lucerne\, Switzerland will be presen ted to the benefit of those who cannot attend the conference.\n This incl udes contributed as well as invited papers.Session 1:\n 30 June 2004 at 1 0:00 hrs\n AB Auditorium II (Prévessin)\, bld. 864\, (former SL Audioriu m)Session 2:\n 1 July 2004 at 10:00 hrs\n AB Auditorium I (Meyrin)\, bld . 6\, (former PS auditorium)Speakers and titles of presentations available on the AB Seminar homepageOrganiser(s): Werner Herr / AB/ABPMore informat ion: http://cern.ch/AB-seminar/\n\nhttp://indico.cern.ch/conferenceDisplay .py?confId=a042668 LOCATION:CERN SL Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a042668 END:VEVENT BEGIN:VEVENT SUMMARY:Presentations at the European Particle Accelerator Conference 2004 (2/2) DTSTART;VALUE=DATE-TIME:20040701T080000Z DTEND;VALUE=DATE-TIME:20040701T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a042669@cern.ch DESCRIPTION:The oral presentations of the AB department at the European Pa rticle Accelerator Conference 2004 in Lucerne\, Switzerland will be presen ted to the benefit of those who cannot attend the conference.\n This incl udes contributed as well as invited papers.Session 2:\n 1 July 2004 at 10 :00 hrs\n AB Auditorium I (Meyrin)\, bld. 6\, (former PS auditorium)Speak ers and titles of presentations available on the AB Seminar homepageOrgani ser(s): Werner Herr / AB/ABPMore information: http://cern.ch/AB-seminar/\n \nhttp://indico.cern.ch/conferenceDisplay.py?confId=a042669 LOCATION:CERN PS Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a042669 END:VEVENT BEGIN:VEVENT SUMMARY:Enrico Fermi and the first Chain Reaction DTSTART;VALUE=DATE-TIME:20040712T121500Z DTEND;VALUE=DATE-TIME:20040712T131500Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a042962@cern.ch DESCRIPTION:Ten years after the first chain reaction\, many of the partici pants gathered in the same room to film a program for television. Enrico F ermi\, Arthur Compton and others describe the experiment in a discussion w hich covers many aspects of this project. Some other details of the reacto r will also be described from a more modern perspective.Organiser(s): Wern er Herr (AB/ABP)More information: http://cern.ch/AB-seminar/\n\nhttp://ind ico.cern.ch/conferenceDisplay.py?confId=a042962 LOCATION:CERN PS Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a042962 END:VEVENT BEGIN:VEVENT SUMMARY:Proton Intensity Activities at Fermilab DTSTART;VALUE=DATE-TIME:20040715T090000Z DTEND;VALUE=DATE-TIME:20040715T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a042963@cern.ch DESCRIPTION:The last few years have brought renewed demands for Fermilab p rotons. The primary users of protons are the neutrino experiments and anti -proton production. The neutrino experiments require large numbers of prot ons at 8 GeV and 120 GeV from the Booster and Main Injector accelerators t o service MiniBooNE and NuMI/MINOS. Anti-proton production requires large numbers of protons at 120 GeV\, along with strict requirements on beam emi ttances. Numerous projects are underway or under consideration to increase the number of protons delivered. These projects include\, among other: im provements to the Booster accelerator to allow a greater number of protons per cycle and less radiation produced per proton\; stacking techniques in the Main Injector to combine Booster batches\; improvements to the Main I njector to accelerator more protons or to do so faster\; and even consider ations for a new proton driver as a replacement for the Booster. I will di scuss the current results of these efforts as well as future plans.Organis er(s): Werner Herr (AB/ABP)More information: http://cern.ch/AB-seminar/\n\ nhttp://indico.cern.ch/conferenceDisplay.py?confId=a042963 LOCATION:CERN PS Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a042963 END:VEVENT BEGIN:VEVENT SUMMARY:Preliminary results of the Scrubbing Run 2004 DTSTART;VALUE=DATE-TIME:20040722T090000Z DTEND;VALUE=DATE-TIME:20040722T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a043210@cern.ch DESCRIPTION:Because of the tight bunch spacing\, the LHC beam induces mult ipacting in the SPS vacuum chamber and an electron cloud builds up along t he LHC bunch train. The resulting electron bombardment at the vacuum chamb er surface is responsible for dynamic pressure rises and fast transverse i nstabilities. The critical parameter for the onset of the beam-induced mul tipacting is the Secondary Electron Yield (SEY) of the vacuum chamber surf ace. A sizeable reduction of the SEY can be obtained by beam induced elec tron bombardment ('scrubbing'). Dedicated scrubbing runs (~10 days in the early part of the run) have become part of the SPS accelerator programme since 2002. These machine runs have been used to increase the threshold bu nch population for the onset of electron multipacting in the SPS but in pa rticular they have provided significant input to understand the electron c loud build-up and to bench-mark simulations to increase the reliability of the extrapolations to the LHC. This has been possible thanks to the conce ption and installation of dedicated electron cloud monitors in the SPS as a result of the collaboration between the AB and AT departments and thanks to the advances in the understanding of the LHC beam behaviour in the pre sence of electron cloud. An overview of the tools developped so far and of the results obtained\, in particular during the last scrubbing run\, will be presented. Organiser(s): Werner Herr (AB/ABP)More information: http:// cern.ch/AB-seminar/\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=a 043210 LOCATION:CERN SL Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a043210 END:VEVENT BEGIN:VEVENT SUMMARY:Outcome of the High Intensity Proton Working Group DTSTART;VALUE=DATE-TIME:20040729T090000Z DTEND;VALUE=DATE-TIME:20040729T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a043311@cern.ch DESCRIPTION:The High Intensity Proton Working Group was created at the end of the year 2002\, with the mandate to make recommendations to the manage ment of the AB department for the future of the CERN proton accelerator co mplex. The working group was specifically asked to collect the needs of th e various users communities\, evaluate the benefits of the possible improv ements and elaborate a preferred long-term scenario. Short term first prio rity steps had to be proposed\, in line and consistent with the long-term scenario. The final report has been published (CERN-AB-2004-022 OP/RF). Th e work done will be presented as well as the recommendations and the statu s of their implementation.Organiser(s): Werner Herr (AB/ABP)More informati on: http://cern.ch/AB-seminar/\n\nhttp://indico.cern.ch/conferenceDisplay. py?confId=a043311 LOCATION:CERN PS Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a043311 END:VEVENT BEGIN:VEVENT SUMMARY:Conventions for Identifiers of Equipment in the PS-Complex DTSTART;VALUE=DATE-TIME:20040916T090000Z DTEND;VALUE=DATE-TIME:20040916T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a043815@cern.ch DESCRIPTION:The PS-Complex covers CERN's oldest operational accelerator in frastructures and is foreseen to host new machines such as LEIR\, CTF3 and SPL. Documentation on equipment design\, installation and maintenance has been established with the tools available at the time. In order to preser ve the relevant information for the functioning of the PS-Complex\, a cohe rent\, central information management needs to be ensured with the EDMS to ols. As a prerequisite\, proper identification of the equipment is essenti al. The speaker will explain the proposed identification scheme for equipm ent design\, drawings\, manufactured equipment and layout components in th e PS-Complex.Organiser(s): Werner Herr (AB/ABP)More information: http://ce rn.ch/AB-seminar/\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=a04 3815 LOCATION:CERN PS Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a043815 END:VEVENT BEGIN:VEVENT SUMMARY:Recent results of the studies for a Novel Multi-Turn Extraction at the CERN PS DTSTART;VALUE=DATE-TIME:20040930T090000Z DTEND;VALUE=DATE-TIME:20040930T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a044053@cern.ch DESCRIPTION:Since a few years\, a novel approach to perform multi-turn ext raction is under study at the CERN PS machine. It is based on beam splitti ng in the horizontal phase space by means of adiabatic capture of charged particles into stable islands. This manipulation allows generating an extr acted beam nicely matching the phase space of the receiving machine with v irtually no losses. The proposed technique is thus an ideal candidate to r eplace the extraction mode called Continuous Transfer\, routinely used to deliver the proton beam to the SPS for the fixed-target Physics programme\ , and it is a crucial development for the future scheme to generate a high -intensity proton beam for CNGS. The principle of the Continuous Transfer as well as of the novel multi-turn extraction will be briefly reviewed\, t heir performance compared\, and the experimental results of past years sum marised. The main focus will be on the experimental findings obtained in s ummer 2004. Also\, an outline of possible scenarios to implement the propo sed extraction scheme will be given.Organiser(s): Werner Herr (AB/ABP)More information: http://cern.ch/AB-seminar/\n\nhttp://indico.cern.ch/conferen ceDisplay.py?confId=a044053 LOCATION:CERN PS Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a044053 END:VEVENT BEGIN:VEVENT SUMMARY:Recent electron beam driven plasma wakefield accelerator results\n DTSTART;VALUE=DATE-TIME:20041007T090000Z DTEND;VALUE=DATE-TIME:20041007T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a044170@cern.ch DESCRIPTION:Plasma accelerators have made very significant progress in the last year. In particular\, the 1 GeV energy gain barrier has been broken for the first time\, with an energy gain > 3 GeV over about 10 cm\, and th erefore a gradient > 30 GeV/m\, in an electron beam driven accelerator\, o r plasma wakefield accelerator (PWFA). In that experiment the ultra-short ( 15 kA) bunches of the Stanford Linear Accelerator Center also created th eir own plasma through field ionization of a lithium vapor. This new self- ionization regime of the PWFA opens the possibility for multi-meter long\, > 10**16/cm3 plasmas to be easily generated. At the same time\, numerical codes have shown that an electron bunch can be accelerated by 50 GeV with a narrow energy spread over only three meters of plasma\, and with no emi ttance growth\, These and other exciting results demonstrate real progress toward the realization of a plasma accelerator module that would double t he energy of a future\, multi-kilometer long accelerator over only a few t ens of meters. A review of recent PWFA results will be presented\, and the ir relevance to a plasma energy doubler will be discussed.Organiser(s): We rner Herr / AB/ABPMore information: http://cern.ch/AB-seminar/\n\nhttp://i ndico.cern.ch/conferenceDisplay.py?confId=a044170 LOCATION:CERN SL Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a044170 END:VEVENT BEGIN:VEVENT SUMMARY:LHC Upgrade Taking Shape... - The seminar is POSTPONED!!! DTSTART;VALUE=DATE-TIME:20050113T100000Z DTEND;VALUE=DATE-TIME:20050113T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a045614@cern.ch DESCRIPTION:\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=a045614 LOCATION:CERN SL Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a045614 END:VEVENT BEGIN:VEVENT SUMMARY:The Spallation Neutron Source (SNS)\, status and outlook DTSTART;VALUE=DATE-TIME:20050124T150000Z DTEND;VALUE=DATE-TIME:20050124T160000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a045615@cern.ch DESCRIPTION:The Spallation Neutron Source (SNS) is a second-generation pul sed neutron source under construction at Oak Ridge National Laboratory. SN S is funded by the U.S. Department of Energy's Office of Basic Energy Scie nces and is dedicated to the study of the structure and dynamics of materi als by neutron scattering. A partnership of six national laboratories (ANL \, BNL\, JLab\, LANL\, LBNL\, and ORNL) is responsible for the design and construction of the various subsystems. The facility will begin operation in 2006 and will deliver a 1.0-GeV\, 1.4-MW proton beam with a pulse lengt h of approximately 700 nanoseconds to a liquid mercury target. The experti se of the different laboratories has been exploited to enhance the deliver ed beam power by almost an order of magnitude compared to existing neutron facilities. The achievable neutron-scattering performance will exceed pre sent sources by more than a factor of 20 to 100. To achieve such a big ste p\, the subsystems require substantial improvements compared with existing accelerators. The challenges\, the status of the project\, and potential upgrades are presented during the talk. Organiser(s): Werner Herr (AB/ABP) More information: http://cern.ch/AB-seminar/\n\nhttp://indico.cern.ch/con ferenceDisplay.py?confId=a045615 LOCATION:CERN PS Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a045615 END:VEVENT BEGIN:VEVENT SUMMARY:Tevatron commissioning and operation experience DTSTART;VALUE=DATE-TIME:20050124T131500Z DTEND;VALUE=DATE-TIME:20050124T141500Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a05294@cern.ch DESCRIPTION:The Tevatron began accelerating protons for fixed target exper iments in 1983. Since that time we have gained much experience operating a superconducting synchrotron and have also commissioned the Tevatron as a proton and antiproton collider. This has been an evolving process and even today\, more than 20 years later\, we continue to learn more about the Te vatron. In this talk I will share some of Fermilab's experience commission ing and operating the Tevatron over the past 20 years.PLEASE NOTE UNUSUAL DAY AND TIME!Organiser(s): Werner Herr / AB/ABP DepartmentMore information : http://cern.ch/AB-seminar/\n\nhttp://indico.cern.ch/conferenceDisplay.py ?confId=a05294 LOCATION:CERN PS Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a05294 END:VEVENT BEGIN:VEVENT SUMMARY:LHC Upgrade Taking Shape - Highlights of HHH-2004: 'Beam Dynamics in Future Hadron Colliders and Rapidly Cycling High-Intensity Synchrotrons '\n DTSTART;VALUE=DATE-TIME:20050203T100000Z DTEND;VALUE=DATE-TIME:20050203T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a05579@cern.ch DESCRIPTION:The European CARE HHH network studies possibilities to boost t he LHC luminosity by up to a factor 10 to 1035 cm-2s-1 after about 7 years of operation\, i.e.\, around 2014. Such LHC upgrade would include new int eraction regions\, including stronger or larger-aperture low-beta quadrupo les\, moderate modifications of several subsystems\, like beam dump or col limation\, in order to cope with a higher beam current\, and\, possibly\, either long-range beam-beam compensation or crab cavities. In a more chall enging approach one can envisage the upgrade of the injector chain and in a later stage the energy upgrade of the LHC itself. A CARE workshop devote d to the LHC upgrade and to the GSI FAIR project\, 'HHH-2004'\, was held a t CERN from 8-11 November 2004 (see http://care-hhh.web.cern.ch/CARE-HHH/H HH-2004). It was attended by more than 100 accelerator and particle physic ists from Europe\, the US and Japan. The AB seminar will present some of t he workshop highlights.Organiser(s): Werner Herr / AB DepartmentMore infor mation: http://cern.ch/AB-seminar/\n\nhttp://indico.cern.ch/conferenceDisp lay.py?confId=a05579 LOCATION:CERN SL Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a05579 END:VEVENT BEGIN:VEVENT SUMMARY:The LHC Collimation System DTSTART;VALUE=DATE-TIME:20050310T100000Z DTEND;VALUE=DATE-TIME:20050310T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a051491@cern.ch DESCRIPTION:The LHC collimation system has been redesigned over the last t wo years in order to meet the requirements from the unprecedented LHC beam intensities. Important decisions have been taken on the different types o f collimators to be installed\, the overall collimation system layout\, th e collimator design (materials\, lengths\, ...) and the required infrastr ucture. The overall system design has now essentially been finalized and t he first system components are ready for series production. In this semina r the final design of the LHC collimation system is described. The differe nt types of LHC collimators\, their basic design features and their role i n beam cleaning and machine protection are explained. The remaining work o n various parts for phase 1 of LHC collimation and an outlook towards phas e 2 are presented.Organiser(s): Werner Herr / AB/ABP DepartmentMore inform ation: http://cern.ch/AB-seminar/\n\nhttp://indico.cern.ch/conferenceDispl ay.py?confId=a051491 LOCATION:CERN SL Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a051491 END:VEVENT BEGIN:VEVENT SUMMARY:Presentations at the Particle Accelerator Conference 2005 (session 1) DTSTART;VALUE=DATE-TIME:20050504T083000Z DTEND;VALUE=DATE-TIME:20050504T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a052435@cern.ch DESCRIPTION:The oral presentations of the AB department at the Particle Ac celerator Conference 2005 in Knoxville\, Tennessee\, U.S.A. will be presen ted to the benefit of those who cannot attend the conference.This includes contributed as well as invited papers.Organiser(s): Werner Herr/AB-ABPMor e information: http://cern.ch/AB-seminar/\n\nhttp://indico.cern.ch/confere nceDisplay.py?confId=a052435 LOCATION:CERN PS Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a052435 END:VEVENT BEGIN:VEVENT SUMMARY:Presentations at the Particle Accelerator Conference 2005 (session 2) DTSTART;VALUE=DATE-TIME:20050512T083000Z DTEND;VALUE=DATE-TIME:20050512T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a052437@cern.ch DESCRIPTION:The oral presentations of the AB department at the Particle Ac celerator Conference 2005 in Knoxville\, Tennessee\, U.S.A. will be presen ted to the benefit of those who cannot attend the conference.This includes contributed as well as invited papers.Organiser(s): Werner Herr/AB-ABPMor e information: http://cern.ch/AB-seminar/\n\nhttp://indico.cern.ch/confere nceDisplay.py?confId=a052437 LOCATION:CERN SL Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a052437 END:VEVENT BEGIN:VEVENT SUMMARY:Orbit control and beam-based alignment at RHIC DTSTART;VALUE=DATE-TIME:20050524T090000Z DTEND;VALUE=DATE-TIME:20050524T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a052761@cern.ch DESCRIPTION:Successful implementation of beam-based alignment (BBA) algori thms\, tailored to different types of magnets at RHIC\, provides significa nt benefits to machine operations for heavy ions and polarized protons. We have performed quadrupole beam-based alignment to calibrate beam position monitor (BPM) centers relative to interaction region quadrupoles to maxim ize aperture during acceleration ramps and provide accurate steering in lo w-beta collision optics. This method was also used to investigate optimal transition jump orbit in strings of transition jump quadrupoles. BPM offse ts in RHIC arcs\, where quadrupole shunts are absent\, were determined usi ng sextupole BBA to maximize polarization efficiency through the RHIC pola rized proton acceleration cycle. This talk summarizes techniques and resul ts for the first application of these beam-based alignment techniques at R HIC in 2005.Organiser(s): Werner Herr / CERN-AB/ABPMore information: http: //cern.ch/AB-seminar/\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId =a052761 LOCATION:CERN SL Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a052761 END:VEVENT BEGIN:VEVENT SUMMARY:AB and LHC Project Seminar: RHIC Commissioning DTSTART;VALUE=DATE-TIME:20050610T120000Z DTEND;VALUE=DATE-TIME:20050610T130000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a053423@cern.ch DESCRIPTION:There has only been three large super-conducting accelerators built to date\, the most recent\, the Relativistic Heavy Ion Collider (RHI C) at Brookhaven National Laboratory. I will review the early commissioni ng of the machine covering the final stages of hardware installation and t he initial beam operation. Covering topics such as tunnel installation\, vacuum\, cryogenics and power converters I will look at items that caused problems and answer the time honoured conundrum of 'how many engineering d oes it take commission a power converter?Organiser(s): John Miles / AT-MAS & Werner Herr / AB-ABPNote: *Please note unusual day!\n\nhttp://indico.ce rn.ch/conferenceDisplay.py?confId=a053423 LOCATION:CERN PS Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a053423 END:VEVENT BEGIN:VEVENT SUMMARY:Issues in Tevatron magnets and operation DTSTART;VALUE=DATE-TIME:20050623T090000Z DTEND;VALUE=DATE-TIME:20050623T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a053435@cern.ch DESCRIPTION:The first part of the seminar is devoted to the superconductin g magnets of the Tevatron lattice cell (main dipoles and quadrupoles). The electromagnetic design and the field quality is briefly discussed\, with special emphasis on the random components and on the dynamic effects. The Tevatron machine cycle is then presented\, and the control of the machine parameters needed for operation is discussed. Finally\, the performance in terms of peak and integrated luminosity obtained during Run II is present ed\, pointing out the solutions adopted to maximize these quantities. A co mparison with the LHC magnets and the expected operation is carried out.Or ganiser(s): Werner Herr / AB-ABPMore information: http://cern.ch/AB-semina r/\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=a053435 LOCATION:CERN PS Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a053435 END:VEVENT BEGIN:VEVENT SUMMARY:Status of the CNGS project DTSTART;VALUE=DATE-TIME:20050721T090000Z DTEND;VALUE=DATE-TIME:20050721T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a054248@cern.ch DESCRIPTION:The CERN neutrinos to Gran Sasso (CNGS) project will provide a n intense muon neutrino beam from the CERN-SPS in the direction of the Gra n Sasso underground laboratory in Italy. The progress of the CNGS project is presented. Following the successful completion of the 1 kilometre long decay vacuum tube\, the general services have been put in place. In parall el\, equipment procurement\, assembly and tests in the lab have been progr essing. The installation of equipment in the proton beam tunnel and the ta rget chamber is now starting. This installation work should be completed e arly 2006 and will be followed by hardware commissioning and 'dry runs'. C NGS commissioning with beam is scheduled to start end of May 2006.Organise r(s): Werner Herr / AB-ABPMore information: http://cern.ch/AB-seminar/\n\n http://indico.cern.ch/conferenceDisplay.py?confId=a054248 LOCATION:CERN AB Auditorium Preves URL:http://indico.cern.ch/conferenceDisplay.py?confId=a054248 END:VEVENT BEGIN:VEVENT SUMMARY:Design and operation of the MiniBooNE horn DTSTART;VALUE=DATE-TIME:20050811T090000Z DTEND;VALUE=DATE-TIME:20050811T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a054771@cern.ch DESCRIPTION:MiniBoone is a neutrino oscillation experiment operating at th e Fermilab Booster. This seminar will describe the design and operational history of the MiniBooNE horn. The first MiniBooNE horn lasted for 96 mill ion pulses operating at an average pulse rate of 5 Hz\, instantaneuous rat e of 15 Hz\, making it the longest-lived and fastest pulsing horn in the w orld. The seminar will focus on the fatigue research that went into the de velopment of the horn and its unique design features. The failure mode tha t eventually required the replacement of the horn will also be discussed.O rganiser(s): Werner Herr /AB-ABP DepartmentMore information: http://cern.c h/AB-seminar/\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=a054771 LOCATION:CERN AB Auditorium Preves URL:http://indico.cern.ch/conferenceDisplay.py?confId=a054771 END:VEVENT BEGIN:VEVENT SUMMARY:Recent Innovations in Muon Beam Cooling and Prospects for Muon Col liders\n DTSTART;VALUE=DATE-TIME:20050830T090000Z DTEND;VALUE=DATE-TIME:20050830T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a054854@cern.ch DESCRIPTION:In the last four years\, several new techniques to cool muon b eams have been invented and are under development supported by US DOE Smal l Business Innovation Research grants. These new techniques will be descr ibed as well as their use to enable a high-luminosity\, energy-frontier mu on collider based on the superconducting RF cavities being developed for t he International Linear Collider. Preliminary steps toward the collider i nclude a six-dimensional muon cooling demonstration experiment\, a neutrin o factory based on effective muon cooling\, and a lower-energy muon collid er to study Higgs particles.Organiser(s): Werner Herr / AB-ABPMore informa tion: http://cern.ch/AB-seminar/\n\nhttp://indico.cern.ch/conferenceDispla y.py?confId=a054854 LOCATION:CERN AB Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=a054854 END:VEVENT BEGIN:VEVENT SUMMARY:Use of Head-Tail Chromaticity Measurement in the Tevatron DTSTART;VALUE=DATE-TIME:20050915T090000Z DTEND;VALUE=DATE-TIME:20050915T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a055561@cern.ch DESCRIPTION:The Head-Tail Chromaticity measurement technique developed at CERN has been implemented in the Tevatron. Having used this application in the Tevatron for over two years under various beam conditions we have lea rned a lot about the possibilities\, limitations and challenges of this me thod of chromaticity measurement. The results will be presented along with the lessons learned\, and can hopefully be of help in the ongoing develop ment of chomaticity measurement systems for the LHC.Organiser(s): Werner H err (AB/ABP)More information: http://cern.ch/AB-seminar/\n\nhttp://indico. cern.ch/conferenceDisplay.py?confId=a055561 LOCATION:CERN AB Auditorium Prevessin URL:http://indico.cern.ch/conferenceDisplay.py?confId=a055561 END:VEVENT BEGIN:VEVENT SUMMARY:Accelerator R&D for High Energy Physics. Report from the HEP2005 c onference DTSTART;VALUE=DATE-TIME:20050922T090000Z DTEND;VALUE=DATE-TIME:20050922T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a055716@cern.ch DESCRIPTION:We report about accelerator aspects from the hep2005 High Ener gy Physics EPS conference\, which took place from the 21 - 27 July in Lisb on. The conference included a parallel session on "New Developments in Acc elerator Physics and Technology"\, a plenary talk on "Accelerator Prospect s for HEP" and a joint ECFA-EPS Session on the "Future of High Energy Phys ics".Organiser(s): Werner Herr (AB/ABP)More information: http://cern.ch/AB -seminar/\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=a055716 LOCATION:CERN AB Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=a055716 END:VEVENT BEGIN:VEVENT SUMMARY:AB/ABP ACCELERATOR PHYSICS GROUP: Second MAD-X Day DTSTART;VALUE=DATE-TIME:20050923T063000Z DTEND;VALUE=DATE-TIME:20050923T160000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a055715@cern.ch DESCRIPTION:It is three years by now that the LHC design team is successfu lly using MAD-X instead of the frozen MAD-8 code. The most important of th ese extensions is the interface to PTC the Polymorphic Tracking Code of E. Forest. The most important features of MAD-X are: Program Development via part-time custodian and large team of part-time module keepers in- and ou tside of CERNLanguages: C\, Fortran77\, and Fortran90Dynamic Memory Alloca tion: In the Core Program written in CStrictly modular organizationModifie d and extended input languageSymplectic and arbitrary exact description of all elements via PTCTaylor Maps and Normal Form techniques using PTCThe g oal of this Second MAD-X Day can be summarized as follows: MAD-X status: I t is the design tool of the LHCMAD-X - PTC Integration: What is still need ed?What is MAD-X missing compared to MAD8? Who will do the job?How to best serve the Non-LHC community with MAD-X.Agenda: MAD-X StatusExperience wit h MAD-X for LHC latticesPTC - Presence and FuturePTC Modules in MAD-XProgr ess of the Thin-lens Tracking ModuleHESR at FAIRIBS in MAD-XThe Touschek M odulePlans for MAD-X in UAL/SXFOpen Discussion SessionOrganiser(s): Frank SchmidtMore information: http://frs.home.cern.ch/frs/Xdoc/mad-X_day.html\n \nhttp://indico.cern.ch/conferenceDisplay.py?confId=a055715 LOCATION:CERN AB Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=a055715 END:VEVENT BEGIN:VEVENT SUMMARY:The NuMI Beam System: Commissioning and Initial Operation DTSTART;VALUE=DATE-TIME:20050929T121500Z DTEND;VALUE=DATE-TIME:20050929T131500Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a055856@cern.ch DESCRIPTION:The Fermilab NuMI (NeUtrinos at the Main Injector) beam system produces an intense beam of neutrinos directed at the MINOS far detector\ , located in Soudan\,MN at a baseline length of 735 km. Completion of the NuMI construction project was accomplished early this year\, along with be am commissioning. High intensity operation at 200 kW beam power for MINOS neutrino oscillation measurements is in progress\, with more than 5E19 pro tons targeted to date. A key to successful NuMI beam running has been inte gration into mixed mode operation with the ongoing TeVatron P-Pbar collide r program. Details of the NuMI beam system\, the beam commissioning proces s\, and progression to high intensity operation are presented. Problems an d solutions found are also covered\, along with projections toward increas ed NuMI beam power.Organiser(s): Werner Herr (AB/ABP)More information: htt p://cern.ch/AB-seminar/\n\nhttp://indico.cern.ch/conferenceDisplay.py?conf Id=a055856 LOCATION:CERN AB Auditorium Prevessin URL:http://indico.cern.ch/conferenceDisplay.py?confId=a055856 END:VEVENT BEGIN:VEVENT SUMMARY:Transverse-Longitudinal Correlations: FEL Performance and Emittanc e Transfer DTSTART;VALUE=DATE-TIME:20051004T121500Z DTEND;VALUE=DATE-TIME:20051004T131500Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a056170@cern.ch DESCRIPTION:It is shown that transverse-longitudinal correlations would be advantageous for free electron lasers (FEL). The theoretical reasons are developed and a number of numerical examples are given. Methods of produci ng such correlations are described\, consisting of rf cavities\, or non-li near transport channels with rf cavities\, or laser backscattering\, laser s and wigglers\, and plasma channels. It is shown that emittance transfer would also be advantageous for FELs. It is shown that introducing specific correlations would allow just such transfers.Organiser(s): Werner Herr (A B/ABP)\, Ted Wilson (DSU/SG)More information: http://cern.ch/AB-seminar/\n \nhttp://indico.cern.ch/conferenceDisplay.py?confId=a056170 LOCATION:CERN AB Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=a056170 END:VEVENT BEGIN:VEVENT SUMMARY:JOINT AB AND LHC PROJECT SEMINAR: Possible SPS experiments to test crystal collimation for the LHC DTSTART;VALUE=DATE-TIME:20060202T100000Z DTEND;VALUE=DATE-TIME:20060202T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a06565@cern.ch DESCRIPTION:We recently suggested using short bent crystals as primary col limators in a two stage cleaning system for hadron colliders\, with the ai m of providing larger impact parameters in the secondary bulk absorber thr ough coherent beam-halo deflection. Tests with crystals a few mm long\, pe rformed with 70 GeV proton beams at IHEP in Protvino\, showed a channeling efficiency exceeding 85 %. We also observed disturbing phenomena such as dechanneling at large impact angles\, insufficient bending induced by volu me capture inside the crystal\, multiple scattering of non-channeled proto ns and\, for the first time\, a proton flux reflected by the crystalline p lanes.\n The proposed experiments in the SPS should contribute to consol idating our knowledge of channeling and dechanneling and will provide a te st bed to be eventually used in the LHC collimation system.Organiser(s): W erner Herr (AB/ABP)\, John Miles (AT/MAS)More information: http://cern.ch/ AB-seminar/\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=a06565 LOCATION:CERN AB Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=a06565 END:VEVENT BEGIN:VEVENT SUMMARY:POSTPONED!!! Reliability Study of the Beam Loss Monitor System fo r the LHC DTSTART;VALUE=DATE-TIME:20060216T100000Z DTEND;VALUE=DATE-TIME:20060216T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a06745@cern.ch DESCRIPTION:The seminar is postponed.\n\nhttp://indico.cern.ch/conferenceD isplay.py?confId=a06745 LOCATION:CERN AB Auditorium Prevessin URL:http://indico.cern.ch/conferenceDisplay.py?confId=a06745 END:VEVENT BEGIN:VEVENT SUMMARY:JOINT AB and LHC Seminar: LHC operation and safety DTSTART;VALUE=DATE-TIME:20060323T131500Z DTEND;VALUE=DATE-TIME:20060323T141500Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a061368@cern.ch DESCRIPTION:With its extraordinary discovery potential\, the CERN-LHC will be the most important tool for the world-wide community of particle physi cists for the years to come. Safe exploitation of the LHC with the unprece dented amount of energy stored in magnet system and beams will be very cha llenging and requires novel approaches in machine protection. In case of a major accident\, repair of equipment could be lengthy\, the machine might even be damaged to an extent that repair becomes uncertain.\n For CERN\ , it is the first time that operation is strongly coupled to equipment saf ety. In other organizations\, basic safety concepts\, performance criteria and safety goals as well as elements of safety culture (*) are being wide ly discussed and implemented\, such as the nuclear industry.\n This semi nar will address some key issues in these areas\, and will examine how CER N could benefit from such concepts.\n (*) Definition of safety culture f or nuclear plants: the assembly of characteristics and attitudes in organi zations and individuals which establishes that\, as an overriding priority \, nuclear plant safety issues receive the attention warranted by their si gnificance.Organiser(s): Werner Herr (AB/ABP)More information: http://cern .ch/AB-seminar/\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=a0613 68 LOCATION:CERN AT Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a061368 END:VEVENT BEGIN:VEVENT SUMMARY:A new direct method for measuring the absolute luminosity at the L HC DTSTART;VALUE=DATE-TIME:20060330T090000Z DTEND;VALUE=DATE-TIME:20060330T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a061420@cern.ch DESCRIPTION:A novel method for determining the absolute luminosity in a co lliding-beam experiment at circular accelerators is proposed. It uses vert ex reconstruction of beam-gas interaction to determine the beam shapes and beam overlap. This method could be applied (for example) at point 8 of th e LHC without modification of the LHCb detector.\n The method relies als o on the determination of the absolute bunch charges by the LHC beam diagn ostics.Organiser(s): Werner Herr (AB/ABP)More information: http://cern.ch/ AB-seminar/\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=a061420 LOCATION:CERN AB Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=a061420 END:VEVENT BEGIN:VEVENT SUMMARY:Reliability Study of the Beam Loss Monitor System for the LHC DTSTART;VALUE=DATE-TIME:20060406T090000Z DTEND;VALUE=DATE-TIME:20060406T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a061860@cern.ch DESCRIPTION:The impact of the beam particles of the LHC can cause severe d amage on the superconducting magnets\, resulting in significant downtime f or repairing. The Beam Loss Monitors System (BLMS) detects the secondary p articles shower of the lost beam particles and initiates the extraction of the beam before any serious damage to the equipment can occur. The main g oal for the BLMS in term of reliability is the design of a system minimizi ng both the probability to not detect a dangerous loss and the number of f alse alarms generated. The presentation introduces the reliability theory and shows the techniques used to provide an estimation of the probability to damage a magnet\, of the number of false alarms and of the number of ge nerated warnings. The implemented model allows future modifications of the system\, following the measuring of the hazard rates during the LHC life. Organiser(s): Werner Herr (AB/ABP) More information: http://cern.ch/AB-sem inar/\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=a061860 LOCATION:CERN AB Auditorium Prevessin URL:http://indico.cern.ch/conferenceDisplay.py?confId=a061860 END:VEVENT BEGIN:VEVENT SUMMARY:The NuMI Beam : A First Year of Operation DTSTART;VALUE=DATE-TIME:20060511T090000Z DTEND;VALUE=DATE-TIME:20060511T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a062284@cern.ch DESCRIPTION:The Fermilab NuMI (Neutrinos at the Main Injector) beam system directs an intense flux of neutrinos toward the MINOS far detector\, loca ted in Soudan\, Minnesota\, with a baseline length of 735 km. A first year of NuMI beam operation has been completed with 1.4E20 protons targeted\, and primary beam power as high as 270 kW. Details of this first year for N uMI beam operation are presented\, with emphasis on providing\, controllin g and maintaining the intense sustained proton fluxes needed for the MINOS long baseline neutrino measurements.Organiser(s): Werner Herr (AB/ABP)Mor e information: http://cern.ch/AB-seminar/\n\nhttp://indico.cern.ch/confere nceDisplay.py?confId=a062284 LOCATION:CERN AB Auditorium Prevessin URL:http://indico.cern.ch/conferenceDisplay.py?confId=a062284 END:VEVENT BEGIN:VEVENT SUMMARY:Joint AB/LHC SEMINAR: Presentations at the European Particle Accel erator Conference 2006 (1/2) DTSTART;VALUE=DATE-TIME:20060621T090000Z DTEND;VALUE=DATE-TIME:20060621T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a062669@cern.ch DESCRIPTION:The oral presentations of the AB and AT departments at the Eur opean Particle Accelerator Conference 2006 in Edinburgh\, United Kingdom\, will be presented to the benefit of those who cannot attend the conferenc e. This includes contributed as well as invited papers.Organiser(s): Werne r Herr (AB/ABP) and John Miles (AT/MAS)More information: http://cern.ch/AB -seminar/\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=a062669 LOCATION:CERN AT Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a062669 END:VEVENT BEGIN:VEVENT SUMMARY:Joint AB/LHC SEMINAR: Presentations at the European Particle Accel erator Conference 2006 (2/2) DTSTART;VALUE=DATE-TIME:20060622T090000Z DTEND;VALUE=DATE-TIME:20060622T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a062670@cern.ch DESCRIPTION:The oral presentations of the AB and AT departments at the Eur opean Particle Accelerator Conference 2006 in Edinburgh\, United Kingdom\, will be presented to the benefit of those who cannot attend the conferenc e. This includes contributed as well as invited papers.Organiser(s): Werne r Herr (AB/ABP) and John Miles (AT/MAS)More information: http://cern.ch/AB -seminar/\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=a062670 LOCATION:CERN AB Auditorium Prevessin URL:http://indico.cern.ch/conferenceDisplay.py?confId=a062670 END:VEVENT BEGIN:VEVENT SUMMARY:LHC Software Architecture DTSTART;VALUE=DATE-TIME:20060713T090000Z DTEND;VALUE=DATE-TIME:20060713T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a063127@cern.ch DESCRIPTION:The LSA project will provide the high level software for the c ontrol of the LHC accelerator. A brief overview of the operating challenge s and required functionality will be presented. We will highlight the unde rlying software architecture and the key features of its implementation sh owing\, among other things\, the importance of a sound database design. LS A has rolled out over the last two years providing software for TI8\, LEIR \, the SPS and LHC hardware commissioning. Examples of the deployed softwa re will be given.Organiser(s): Werner Herr (AB/ABP)More information: http: //cern.ch/AB-seminar/\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId =a063127 LOCATION:CERN AB Auditorium Prevessin URL:http://indico.cern.ch/conferenceDisplay.py?confId=a063127 END:VEVENT BEGIN:VEVENT SUMMARY:Status report of the working group on 'Proton Accelerators of the Future'(PAF) at CERN DTSTART;VALUE=DATE-TIME:20060720T090000Z DTEND;VALUE=DATE-TIME:20060720T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a063160@cern.ch DESCRIPTION:The PAF working group has been created in May 2005 by the CERN direction to elaborate a baseline scenario for the development and upgrad e of the CERN proton accelerator complex\, following priorities for physic s defined by another team looking after 'Physics Opportunities with Future Proton Accelerators'(POFPA).\nTwo notes have been published since\, which summarize the recommended actions for maximizing the integrated luminosit y in LHC and the potential for neutrino and radioactive beam physics of th e associated upgrades.\nThese proposals and their logic will be presented\ , as well as our future work plan.Organiser(s): Werner Herr (AB/ABP)More i nformation: http://cern.ch/AB-seminar/\n\nhttp://indico.cern.ch/conference Display.py?confId=a063160 LOCATION:CERN AB Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=a063160 END:VEVENT BEGIN:VEVENT SUMMARY:Emittance growth induced by electron cloud in CERN proton rings DTSTART;VALUE=DATE-TIME:20060727T090000Z DTEND;VALUE=DATE-TIME:20060727T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a063177@cern.ch DESCRIPTION:An electron cloud can build-up in the vacuum chamber of proton (and positron) rings\, interact with the beam and give rise to instabilit ies and/or emittance growth. This talk presents numerical and analytical s tudies of transverse single-bunch effects induced by the electron cloud\, in particular for the SPS and the LHC.\nThe strong head-tail instability t hreshold and the associated fast emittance growth are studied\, as a funct ion of beam and cloud characteristics\, and the results are compared with analytical models. A mechanism for the slow incoherent emittance growth\, which is still present at cloud densities below the instability threshold\ , is interpreted as one caused by the periodic crossing of resonances\, du e to a combined effect of particles synchrotron motion and electron-cloud induced tune-shift variation along the bunch.Organiser(s): Werner Herr (AB /ABP)More information: http://cern.ch/AB-seminar/\n\nhttp://indico.cern.ch /conferenceDisplay.py?confId=a063177 LOCATION:CERN AB Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=a063177 END:VEVENT BEGIN:VEVENT SUMMARY:CERN Neutrinos to Gran Sasso (CNGS): Commissioning and First Opera tion DTSTART;VALUE=DATE-TIME:20060921T090000Z DTEND;VALUE=DATE-TIME:20060921T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a063426@cern.ch DESCRIPTION:The CNGS\, CERN Neutrinos to Gran Sasso\, project aims at dire ctly detecting muon to tau-neutrino oscillations. An intense muon-neutrino beam is generated at CERN and directed towards the Gran Sasso National La boratory\, LNGS\, in Italy\, 732 km away from CERN. In LNGS large and comp lex detectors will allow to detect\, in particular\, the rare tau-neutrino s created by 'oscillation'from muon-neutrinos on their way between CERN an d LNGS. On average around two tau-neutrino events are predicted per year i n each of the 2000 ton detectors.\n The construction of the CNGS beam fa cility started in September 2000. The CNGS beam has been commissioned duri ng three weeks in July and August 2006. The operation for physics has star ted on 18th August 2006.\n In this seminar\, an overview of the CNGS bea m will be shown. The beam equipment and instrumentation will be described. Emphasis is on the commissioning results and equipment performance during the initial operation.Organiser(s): Werner Herr (AB/ABP)More information: http://cern.ch/AB-seminar/\n\nhttp://indico.cern.ch/conferenceDisplay.py? confId=a063426 LOCATION:CERN AB Auditorium Prevessin URL:http://indico.cern.ch/conferenceDisplay.py?confId=a063426 END:VEVENT BEGIN:VEVENT SUMMARY:The Fermilab Accelerator Control System: Simultaneous Operation an d Migration of an Increasingly Complex Facility DTSTART;VALUE=DATE-TIME:20061005T090000Z DTEND;VALUE=DATE-TIME:20061005T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a063434@cern.ch DESCRIPTION:The Fermilab accelerator complex supports simultaneous operati on of 8 and 120 GeV fixed target lines\, a high intensity neutrino source (NUMI)\, antiproton production\, and a 1.8 TeV proton-antiproton collider. Controlling all this is a single system known as ACNET.\nACNET is based o n a three tier architecture featuring a high degree of scalability\, large scale parallel data logging\, security\, accountability\, a states facili ty\, a sequencer for automated operation. In recent years the system has b een enhanced to support the demands of the current run\, and also modified to reduce dependence in the upper layers on the obsolete VAX/VMS platform . A Java based infrastruture has been developed\, and is now used for most middle layer functionality as well as some applications. A port of most of the remaining VMS code to Linux is nearing completion. This migration h as been accomplished with minimal interruption to operations.Organiser(s): Werner Herr (AB/ABP) and Mike Lamont (AB/OP)More information: http://cern .ch/AB-seminar/\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=a0634 34 LOCATION:CERN AB Auditorium Prevessin URL:http://indico.cern.ch/conferenceDisplay.py?confId=a063434 END:VEVENT BEGIN:VEVENT SUMMARY:Joint AB & LHC Project Seminar: State of the art of SMES with resp ect to the interests of CERN DTSTART;VALUE=DATE-TIME:20061005T120000Z DTEND;VALUE=DATE-TIME:20061005T130000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a063471@cern.ch DESCRIPTION:SMES (Superconducting Magnet for Energy Storage) is one of the most promising applications of superconductivity for power devices. The t alk will review the status and the perspectives in view of recent developm ents and will touch possible applications for pulsed magnets in synchrotro ns (PS) and other possible uses in the LHC.Organiser(s): John Miles (AT-MA S) and Werner Herr (AB-ABP)Note: Note the unusual time!\n\nhttp://indico.c ern.ch/conferenceDisplay.py?confId=a063471 LOCATION:CERN AT Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a063471 END:VEVENT BEGIN:VEVENT SUMMARY:Design and Performance Optimization of the LHC collimation system DTSTART;VALUE=DATE-TIME:20061130T100000Z DTEND;VALUE=DATE-TIME:20061130T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a063586@cern.ch DESCRIPTION:The Large Hadron Collider (LHC) is presently under constructio n at CERN. The LHC is a circular accelerator that stores proton beams and accelerates them to a 7 TeV beam energy. The required bending fields are achieved with super-conducting magnets. The stored proton beams are coll ided in experimental detectors and produce a design luminosity of 1034 cm -2 s-1. Every storage ring encounters unavoidable proton losses. The proto ns that diffuse into the so-called beam halo can touch accelerator compone nts. In order to avoid quenches of the superconducting magnets\, the halo protons must be removed before reaching the magnets. This is achieved with a multi-stage cleaning system\, built out of two-sided collimators that a re located at adequate positions in the machine. Due to the high stored be am intensity (required for high luminosity)\, the efficiency of the LHC be am cleaning must be much better than in any other exisiting machine: not m ore than 0.00002% of protons hitting the collimators may escape and impact on any meter of super-conducting magnet at 7 TeV. Detailed simulations of realistic operational conditions were performed to address the performanc e of the cleaning system. Beam loss maps show the distribution of proton l osses around the machine down to the 10 cm level. The simulations were us ed for optimizing the system design and improving efficiency by more than a factor of 10. The final performance of the so-called phase 1 collimation system is discussed for the ideal LHC machine and for a case with a reali stically perturbed orbit. For the phase 1 system it is predicted that the allowable LHC intensity is limited to 43% (ideal case) or 27% (nominal orb it) of the nominal design value. The limitations and the assumptions used to derive theses limits are explained\, including a list of characteristic loss locations around the ring.A prototype LHC collimator was tested in t he SPS with LHC-like proton beam conditions (injection energy). The contro l and beam-based alignment of the collimator gap was demonstrated down to the 50 micron level. Interesting results on the beam dynamics for halo par ticles were obtained\, including slowly decaying beam losses after movemen t of collimator jaws. The robustness of the CFC (fiber-reinforced graphite ) collimator jaws was experimentally confirmed and results were compared w ith predictions from numerical models.Organiser(s): Werner Herr (AB/ABP)Mo re information: http://cern.ch/AB-seminar/\n\nhttp://indico.cern.ch/confer enceDisplay.py?confId=a063586 LOCATION:CERN AB Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=a063586 END:VEVENT BEGIN:VEVENT SUMMARY:Joint AB and LHC Project Seminar - POSTPONED ! DTSTART;VALUE=DATE-TIME:20061214T100000Z DTEND;VALUE=DATE-TIME:20061214T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a063598@cern.ch DESCRIPTION: The seminar is postponed to Thursday 18 January 2007 !The 3rd topical CARE-HHH-APD workshop on the LHC luminosity upgrade\, LUMI'06\, d eveloped novel scenarios for the interaction regions while deprecating a n umber of previous options\, proposed novel sets of beam parameters better tailored to a higher-luminosity LHC\, and discussed the supporting upgrade s to the CERN accelerator complex\, including PS replacement\, which may b e necessary for boosting the integrated LHC luminosity as well as the peak luminosity. With a substantial participation from the US-LARP\, the Europ ean and US upgrade activities could successfully be re-aligned and a gener al consensus emerged on the future steps to be taken. In this seminar\, we report highlights from the LUMI'06 workshop and its key recommendations. Organiser(s): John Miles (AT-MCS) and Werner Herr (AB-ABP) Note: Note the unusual time. \n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=a06359 8 LOCATION:CERN AB Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=a063598 END:VEVENT BEGIN:VEVENT SUMMARY:Joint AB and LHC Project Seminar: Baseline Scenario for the LHC Lu minosity Upgrade\, Summary of the CARE-HHH LHC-LUMI-06 Workshop DTSTART;VALUE=DATE-TIME:20070118T100000Z DTEND;VALUE=DATE-TIME:20070118T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a063603@cern.ch DESCRIPTION:The 3rd topical CARE-HHH-APD workshop on the LHC luminosity up grade\, LUMI'06\, developed novel scenarios for the interaction regions wh ile deprecating a number of previous options\, proposed novel sets of beam parameters better tailored to a higher-luminosity LHC\, and discussed the supporting upgrades to the CERN accelerator complex\, including PS replac ement\, which may be necessary for boosting the integrated LHC luminosity as well as the peak luminosity. With a substantial participation from the US-LARP\, the European and US upgrade activities could successfully be re- aligned and a general consensus emerged on the future steps to be taken. I n this seminar\, we report highlights from the LUMI'06 workshop and its ke y recommendations. Note: Note the unusual time. \n\nhttp://indico.cern.ch/ conferenceDisplay.py?confId=a063603 LOCATION:CERN AB Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=a063603 END:VEVENT BEGIN:VEVENT SUMMARY:Summing-up of Accelerators Technical and Operation Review (ATC/ABO C Days: 22-24 January 2007) DTSTART;VALUE=DATE-TIME:20070209T090000Z DTEND;VALUE=DATE-TIME:20070209T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a071@cern.ch DESCRIPTION:This review has the following main goals: Review of the start- up and operation in 2006: What went wrong and how to make it better? Empha sis on short term improvements and longer term actions. Review where neces sary the consolidation programme - are we consolidating the right things a nd in the right order? Can we run the complex in 2007 and beyond in the wa y we do it today? A summing-up of each session will be given: (15 minutes and 5 minutes for discussion)10:00 Major Events in 2006: Frédérick Bordr y \n 10:20 Issues of a General Nature: Thomas Pettersson \n 10:40 The LHC Injector: Paul Collier \n 11:00 Isolde: Steve Myers \n 11:20 AD Ma chine & Experimental Areas - nTOF Facility: Ilias Efthymiopoulos \n 11:4 0 Experimental Areas North\, East and CNGS: Jacques LettryOrganiser(s): Fr édérick Bordry and Paul CollierMore information: http://ab-div.web.cern. ch/ab-div/Meetings/ATC/Welcome.htm\n\nhttp://indico.cern.ch/conferenceDisp lay.py?confId=a071 LOCATION:CERN AB Auditorium Prevessin URL:http://indico.cern.ch/conferenceDisplay.py?confId=a071 END:VEVENT BEGIN:VEVENT SUMMARY:TTF / Flash as the prototype for the European XFEL project DTSTART;VALUE=DATE-TIME:20070222T100000Z DTEND;VALUE=DATE-TIME:20070222T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a0727@cern.ch DESCRIPTION:The European X-ray Free-Electron laser Facility (XFEL) is goin g to be built in an international collaboration at the Deutsches Elektrone n-Synchrotron (DESY)\, Germany\, and the Technical Design Report was publi shed in 2006. The official project is expected for summer 2007. This new f acility will offer photon beams at wavelengths as short as 1 Angstroem wit h highest peak brilliance being more than 100 million times higher than pr esent day synchrotron radiation sources. The radiation has a high degree o f transverse coherence and the pulse duration is reduced from ~100 ps (typ . for SR light sources) down to the ~10 fs time domain. The overall layout of the XFEL will be described. This includes the envisaged operation para meters for the linear accelerator using superconducting TESLA technology. The complete design is based on the actually operated FLASH free-electron laser at DESY. Experience with the operation during first long user runs a t wavelengths from 30 to 13 nm will be described in detail. Various subsys tems of the XFEL could be tested. Specially developed electron beam diagno stics was commissioned. A summary of the status of the XFEL preparation wo rk will be given.Organiser(s): Werner Herr (AB/ABP)More information: http: //cern.ch/AB-seminar/\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId =a0727 LOCATION:CERN AB Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=a0727 END:VEVENT BEGIN:VEVENT SUMMARY:Joint AB and LHC Project Seminar: Observations of Proton Reflectio n on Bent Crystals at the CERN-SPS DTSTART;VALUE=DATE-TIME:20070315T131500Z DTEND;VALUE=DATE-TIME:20070315T141500Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a0775@cern.ch DESCRIPTION:We report observations\, performed by the H8-RD22 Collaboratio n\, of the so-called volume reflection effect with 400 GeV/c protons inter acting with bent Silicon crystals in the H8 beam line at the CERN SPS. The volume reflection is closely related with particle channeling. This pheno menon occurs at the tangency point of a particle trajectory with the bent crystalline planes and consists in the reversal of the transverse componen t of the particle momentum. The measurements were collected with a high sp atial resolution detector mainly based on Silicon strips. The proton beam was deviated in the direction opposite to that of channeling by ~10murad\, which is ~1.3 times the critical angle\, with an efficiency larger than 9 7% in a range of the proton-to-crystal incident angle as large as the bend ing angle of crystallographic planes. This evidence opens new perspectives for manipulation of high-energy beams\, e.g.\, for collimation and extrac tion in the new-generation of hadron colliders or as a method for high-ene rgy experiments in the region near to the circulating beam.Organiser(s): J ohn Miles (AT-MCS) and Werner Herr (AB-ABP)\n\nhttp://indico.cern.ch/confe renceDisplay.py?confId=a0775 LOCATION:CERN AT Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=a0775 END:VEVENT BEGIN:VEVENT SUMMARY:Status of LHC Collimation and Outlook DTSTART;VALUE=DATE-TIME:20070531T090000Z DTEND;VALUE=DATE-TIME:20070531T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a07118@cern.ch DESCRIPTION:The LHC collimation system is designed to provide mandatory cl eaning of the beam halo such that quenches of the super-conducting LHC mag nets are prevented. The LHC requirements are 2-3 orders of magnitude beyon d the achievements at existing super-conducting colliders. Therefore the c ollimation system is being implemented as a staged system. Its first phase is presently being constructed and installed into the LHC tunnel. The sta tus and plans for phase 1 of LHC collimation are presented. Preparations f or beam commissioning are reviewed\, beam test results are explained and s ystem simulations are presented. Finally\, the predicted performance reach of phase 1 and plans for collimation upgrades ('phase 2') are discussed.O rganiser(s): Werner Herr / AB-ABPMore information: http://cern.ch/AB-semin ar/\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=a07118 LOCATION:CERN AB Auditorium Prevessin URL:http://indico.cern.ch/conferenceDisplay.py?confId=a07118 END:VEVENT BEGIN:VEVENT SUMMARY:Interaction Region of a Lepton Proton Collider based on LHC DTSTART;VALUE=DATE-TIME:20070614T090000Z DTEND;VALUE=DATE-TIME:20070614T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-a07124@cern.ch DESCRIPTION:The design\, of a Large Hadron Electron Collider (LHeC) is ske tched. With high luminosity\, 1E33cm-2s-1\, and high energy\, such a colli der can be built in which a 70 GeV electron (positron) beam in the LHC tun nel which is in collision with one of the LHC hadron beams and which opera tes simultaneously with the LHC. The layout of the interaction region is b ased on previous considerations (E. Keil\, A. Verdier) but also takes into account the HERA experience. The LHeC makes possible deep-inelastic lepto n-hadron (ep\, eD and eA) scattering for momentum transfers Q2 beyond 106 GeV2 and for Bjorken x down to the 10-6. New sensitivity to the existence of new states of matter\, primarily in the lepton-quark sector and in dens e partonic systems\, is achieved. The precision possible with an electron- hadron experiment brings in addition crucial accuracy in the determination of hadron structure\, as described in Quantum Chromodynamics\, and of par ton dynamics at the TeV energy scale. The LHeC thus complements the proton -proton and ion programmes\, adds substantial new discovery potential to t hem\, and is important for a full understanding of physics in the LHC ener gy range.Organiser(s): Werner Herr (AB/ABP)More information: http://cern.c h/AB-seminar/\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=a07124 LOCATION:CERN AB Auditorium Prevessin URL:http://indico.cern.ch/conferenceDisplay.py?confId=a07124 END:VEVENT BEGIN:VEVENT SUMMARY:Presentations at the Particle Accelerator Conference 2007 (1/2) DTSTART;VALUE=DATE-TIME:20070619T080000Z DTEND;VALUE=DATE-TIME:20070619T090000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-17372@cern.ch DESCRIPTION:The oral presentations of the AB division at the Particle Acce lerator Conference 2007 in Albuquerque\, USA\, will be presented to the be nefit of those who cannot attend the conference.\nThis includes contribute d as well as invited papers.\n\nSession 1\n\nTuesday\, 19th June\, 2007\na t 10:00 hrs - AB Auditorium II (Prevessin)\, bldg. 864Session 2:\n\nThur sday\, 21st June\, 2007\nat 10:00 hrs - AB Auditorium I (Meyrin)\, bldg. 6PLEASE NOTE UNUSUAL DATES AND TIMES!More Information\n\nhttp://indico.ce rn.ch/conferenceDisplay.py?confId=17372 LOCATION:CERN AB AUDITORIUM P URL:http://indico.cern.ch/conferenceDisplay.py?confId=17372 END:VEVENT BEGIN:VEVENT SUMMARY:Presentations at the Particle Accelerator Conference 2007 (2/2) DTSTART;VALUE=DATE-TIME:20070621T080000Z DTEND;VALUE=DATE-TIME:20070621T090000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-17373@cern.ch DESCRIPTION:The oral presentations of the AB division at the Particle Acce lerator Conference 2007 in Albuquerque\, USA\, will be presented to the be nefit of those who cannot attend the conference.\nThis includes contribute d as well as invited papers.\n\nSession 1\n\nTuesday\, 19th June\, 2007\na t 10:00 hrs - AB Auditorium II (Prevessin)\, bldg. 864Session 2:\n\nThur sday\, 21st June\, 2007\nat 10:00 hrs - AB Auditorium I (Meyrin)\, bldg. 6PLEASE NOTE UNUSUAL DATES AND TIMES!More Information \nOrganiser(s): Werner Herr (AB/ABP) and John Miles (AT/MAS)\n\nhttp://indico.cern.ch/conf erenceDisplay.py?confId=17373 LOCATION:CERN AB AUDITORIUM M URL:http://indico.cern.ch/conferenceDisplay.py?confId=17373 END:VEVENT BEGIN:VEVENT SUMMARY:Joint TS/AB Seminar: The EDMS Viewer DTSTART;VALUE=DATE-TIME:20070628T140000Z DTEND;VALUE=DATE-TIME:20070628T150000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-17545@cern.ch DESCRIPTION:Having the relevant technical documentation easily accesible w hen being on-site to execute equipment maintenance tasks or emergency inte rventions is vital\, both for efficiency and safety reasons. Today\, EDMS is the CERN repository where the equipment documentation can be found.\n\n However\, as the computer network is not available everywhere\, having on- line access to EDMS is impossible in certain places. To overcome this inco nvenience\, AB/PO some years ago designed and implemented a tool which sup ports offline document browsing extracted from EDMS - the ABPOView.\n\nUsi ng the initial concept\, which was tailored to browsing power converter sp ecific data\, TS/CSE in collaboration with AB/PO have now implemented a ge neric offline EDMS document browser with a broader scope: the EDMSViewer. This new tool enables any user community to easily download their required EDMS documentation onto a laptop and to easily browse the information whe n offline. The seminar will present the tool\, how AB/PO uses it in their daily activities and how any other CERN team could also use it.Organiser(s ): E. Tsesmelis / TS\, W. Herr / AB\n\nhttp://indico.cern.ch/conferenceDis play.py?confId=17545 LOCATION:CERN AT AMPHITHEATRE URL:http://indico.cern.ch/conferenceDisplay.py?confId=17545 END:VEVENT BEGIN:VEVENT SUMMARY:A Century of Accelerators and Beyond DTSTART;VALUE=DATE-TIME:20070913T090000Z DTEND;VALUE=DATE-TIME:20070913T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-20659@cern.ch DESCRIPTION:In a new book 'Engines of Discovery' the speaker\, together wi th Andy Sessler of LBNL\, extrapolate the last eighty years of accelerator and detector evelopment and discuss the options for a machine to follow L HC. \nThey analyse the many future applications of accelerators in fields which are far from the high energy frontier: spallation sources\, synchrot ron radiation sources\, medical facilities\, X-ray free electron lasers\, nuclear waste disposal and the generation of power with heavy ion-fusion. They review the prospect for development of radical new techniques for acc elerating particles using plasmas and laser beams. \n\nIn this talk the sp eaker will introduce the book and discuss its implications for the young a ccelerator physicist or engineer of today. The conclusion is that the futu re is bright - the future is accelerators !Coffee and drinks are available after the talk.\n\n\nPLEASE NOTE UNUSUAL PLACE !\nInformation\n\nhttp://i ndico.cern.ch/conferenceDisplay.py?confId=20659 LOCATION:CERN Main Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=20659 END:VEVENT BEGIN:VEVENT SUMMARY:Muon Beam Cooling and Muon Colliders DTSTART;VALUE=DATE-TIME:20071029T100000Z DTEND;VALUE=DATE-TIME:20071029T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-22552@cern.ch DESCRIPTION:A six-dimensional (6D) ionization cooling channel based on a h elical solenoid magnet surrounding RF cavities filled with dense hydrogen gas is the basis for our latest plans for muon colliders. This\nrecently- invented superconducting helical solenoid magnet has solenoidal\, helical dipole\, and helical quadrupole components that are generated by a simple configuration of circular coils. Longitudinal\ncooling is achieved by emi ttance exchange\, where momentum-dependent path length differences in the dense hydrogen energy absorber provide the required correlation between mo mentum and ionization loss. Recent studies of an 800 MHz RF cavity pressu rized with hydrogen\, as would be used in this application\, show that the maximum gradient is not limited by a large external magnetic field\, unli ke vacuum cavities.\nParametric-resonance Ionization Cooling and Reverse E mittance Exchange will be employed to further reduce transverse emittances to a few mm-mr to allow high luminosity with fewer muons than previously imagined.\nPresent concepts for a 1.5 to 5 TeV center of mass collider wit h average luminosity greater than 10**34 cm-2 s-1 include ILC RF structure s to accelerate positive and negative muons in a 10-pass recirculation Lin ac.The status of the designs\, simulations using the G4BeamLine program we have developed from the Geant4 toolkit\, and tests of the cooling compone nts for a high-luminosity\, low-emittance muon collider will be reviewed. We are looking for collaborators to join MANX\, a 6D cooling demonstratio n experiment based on a helical solenoid with z dependent fields. PLEASE NOTE UNUSUAL DAY !\n\nInformation: http://cern.ch/AB-seminar/\n\nhttp://i ndico.cern.ch/conferenceDisplay.py?confId=22552 LOCATION:CERN AB Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=22552 END:VEVENT BEGIN:VEVENT SUMMARY:FLASH RF and Beam Control DTSTART;VALUE=DATE-TIME:20071101T100000Z DTEND;VALUE=DATE-TIME:20071101T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-22228@cern.ch DESCRIPTION:Ultra short bunches with high peak current are required for th e creation \nof high brilliance coherent light in the vacuum ultra violet range in \nundulators. At the free electron laser in Hamburg (FLASH) they are obtained \nby a two stage bunch compression scheme based on off the rf field crest \nacceleration and transverse magnetic chicanes. \nVariations of the rf fields cause beam energy and phase variations. \nThey have a si gnificant influence on the overall performance of the facility.\nThe talk gives an overview on the rf and beam control methods used for \nstabilizin g the rf fields at the normal conducting rf gun and the \nsuperconducting accelerating modules. Methods used for examining the rf and \nbeam stabili ty are presented together with recent results.More information\n\nhttp://i ndico.cern.ch/conferenceDisplay.py?confId=22228 LOCATION:CERN AB Auditorium Prevessin URL:http://indico.cern.ch/conferenceDisplay.py?confId=22228 END:VEVENT BEGIN:VEVENT SUMMARY:LINAC4\, A New Linear Accelerator for the CERN Complex DTSTART;VALUE=DATE-TIME:20071122T100000Z DTEND;VALUE=DATE-TIME:20071122T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-23782@cern.ch DESCRIPTION:In its June 2007 session the CERN Council has approved the Whi te Paper\, which includes construction of a 160 MeV H- linear accelerator called LINAC4. This new facility will initially replace LINAC2 as injector to the PS Booster\, improving its performance up to the levels required f or producing the ultimate LHC luminosity. In a later stage\, LINAC4 is int ended to become the first element of a renewed injection chain for the LHC that can be progressively built over the next decade. After briefly intro ducing the motivations and layout of the new injector chain\, the seminar will present the characteristics of the new linac and give an overview of its main technical features. The schedule and organisation of the project will be shortly discussed. More information\n\nhttp://indico.cern.ch/confe renceDisplay.py?confId=23782 LOCATION:CERN AB Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=23782 END:VEVENT BEGIN:VEVENT SUMMARY:LHC Interaction Region Upgrade DTSTART;VALUE=DATE-TIME:20080124T100000Z DTEND;VALUE=DATE-TIME:20080124T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-26475@cern.ch DESCRIPTION:The seminar will focus on design studies of the interaction\nr egion layouts for a luminosity upgrade of the LHC. After a general\nintrod uction of the LHC luminosity and limitations\, two layout\noptions "dipole first" and "quadrupole first" will be analyzed and\ncompared.\nMore infor mation \n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=26475 LOCATION:CERN AB Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=26475 END:VEVENT BEGIN:VEVENT SUMMARY:The RF background issue in the muon ionization cooling channel DTSTART;VALUE=DATE-TIME:20080207T100000Z DTEND;VALUE=DATE-TIME:20080207T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-27012@cern.ch DESCRIPTION:Essential for muon accelerators\, such as the neutrino factory or the\n muon colliders\, ionization cooling channels use RF cavities to restore\n the energy lost in liquid hydrogen absorbers. The major limitati on in\n cooling comes from electrons emitted from the cavities which cause \n breakdowns or unacceptable thermal load to the liquid hydrogen tanks. I n\n the Muon Ionization Cooling Experiment MICE these electrons also cause \n background in the detectors. This seminar presents the MICE experiment\ n and the issues related to these dark currents\, and the data analysis of \n a direct measurement of this radiation in the MuCool RF background\n ex periment.More information\n\nhttp://indico.cern.ch/conferenceDisplay.py?co nfId=27012 LOCATION:CERN AB Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=27012 END:VEVENT BEGIN:VEVENT SUMMARY:Coherent Electron Cooling in High Energy Hadron Colliders DTSTART;VALUE=DATE-TIME:20080313T100000Z DTEND;VALUE=DATE-TIME:20080313T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-29481@cern.ch DESCRIPTION:Cooling intense high-energy hadron beams remains a major chall enge in \nmodern accelerator physics.\nSynchrotron radiation is still too feeble\, while efficiency of two \nother cooling methods -stochastic and electron -\nfalls rapidly at high energies. In this talk a specific schem e of \nunique cooling technique -\nCoherent Electron Cooling will be disc ussed. The idea of coherent \nelectron cooling using electron beam\ninsta bilities was suggested by Derbenev in early 1980s. But the \nscheme prese nted in this talk - with cooling times under an hour for \n7 TeV protons i n LHC - would be possible only with present-day \naccelerator technology. \n\nIn this talk\, I will discuss the principles\, and the main limitation s \nof the Coherent Electron Cooling process.\nI will describe the main c omponents of the system based on a high- \ngain free-electron laser driven by an energy recovery linac.\nI will present some numerical examples for ions and protons in RHIC \nand the LHC and for electron-hadron option for these colliders.\n\nMore information\n\nhttp://indico.cern.ch/conferenceD isplay.py?confId=29481 LOCATION:CERN AB Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=29481 END:VEVENT BEGIN:VEVENT SUMMARY:JOINT LHC/AB SEMINAR: Compensation of long range beam-beam interac tions DTSTART;VALUE=DATE-TIME:20080327T131500Z DTEND;VALUE=DATE-TIME:20080327T141500Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-30571@cern.ch DESCRIPTION:The 120 long-range beam-beam interactions (LRBB) in the nomina l LHC will ultimately limit its performance. In order to overcome this lim itation a wire compensator (BBLR) is foreseen. A tracking code has been de veloped and employed to study LRBB and its wire compensation in LHC (nomin al and upgraded). Experimental studies at RHIC and SPS on the effect of LR BB and the effectivness of BBLR have been performed. Technical implementat ions for pulsing the device have been studied.Information: http://cern.ch/ AB-seminar/\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=30571 LOCATION:CERN AT Auditorium URL:http://indico.cern.ch/conferenceDisplay.py?confId=30571 END:VEVENT BEGIN:VEVENT SUMMARY:Recent developments of the HEADTAIL code and benchmarking DTSTART;VALUE=DATE-TIME:20080417T090000Z DTEND;VALUE=DATE-TIME:20080417T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-31753@cern.ch DESCRIPTION:The HEADTAIL code was originally developed in 2000 with the go al of\nstudying the interaction between a proton or positron bunch and an\ nelectron cloud with fixed density. The initial model was based on a soft\ nGaussian approximation for the beam slices and treated the\nelectrons as macro-particles with finite size. By 2002 a fast\nParticle-In-Cell electro n cloud-beam module had reliably replaced the\ninitial algorithm and\, in addition\, the code had been already\nextended to describe the interaction of a single bunch with a localized\nsource of impedance. Over the followi ng years\, the HEADTAIL code has\nbeen continuously improved and gradually transformed into a versatile\ntool for collective effects\, able to deal with a broad variety of\nproblems. Presently\, several classes of single b unch transverse and \nlongitudinal collective phenomena can be modeled wit h HEADTAIL\, ranging \nfrom the electron cloud coherent and incoherent eff ects with a realistic \nmodeling of the cloud distribution to various type s of beam instabilities \nand space charge effects. Where possible\, the c ode was successfully\nbenchmarked against analytical solutions\, other cod es or experimental\nresults. In the near future we plan to provide HEADTAI L with reliable\nwake fields valid in the low energy regime\, a space char ge module for the \nlongitudinal plane\, and an option to perform multi-bu nch simulations\nwith long-range wakes.\nThe aim of this talk is to give a general introduction to the physics\nmodel and the features implemented i n HEADTAIL\, and subsequently focus on \na few applications of the code se lected among recent studies of the beam \ncollective behavior in the CERN PS and SPS.\n\n\n\nInformation: http://cern.ch/AB-seminar/\n\nhttp://indic o.cern.ch/conferenceDisplay.py?confId=31753 LOCATION:CERN AB Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=31753 END:VEVENT BEGIN:VEVENT SUMMARY:Summary of the Workshop on Experimental Conditions and Beam Induce d Detector Backgrounds DTSTART;VALUE=DATE-TIME:20080515T090000Z DTEND;VALUE=DATE-TIME:20080515T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-32664@cern.ch DESCRIPTION:Summary and conclusions of the workshop on experimental condit ions and \nbeam induced detector backgrounds\,\nwhich took place at CERN from 3-4 April 2008 are presented.\nThe workshop was organised as combined LHC machine and experiments \nworkshop.\nIt covers a review of the relev ant experience from the TEVATRON\, RHIC \nand HERA\, expectations for the LHC and discusses what the LHC \nexperiments require and provide for opt imisation.\n\nMore Information\n\nhttp://indico.cern.ch/conferenceDisplay. py?confId=32664 LOCATION:CERN AB Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=32664 END:VEVENT BEGIN:VEVENT SUMMARY:Machine Experiments at the SPS and RHIC DTSTART;VALUE=DATE-TIME:20080717T090000Z DTEND;VALUE=DATE-TIME:20080717T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-37016@cern.ch DESCRIPTION:Accurate knowledge of magnetic optics and correction are funda mental\nfor high intensity colliders like the LHC with tight aperture cons traints.\nObservables like the betatron phase advance which are independen t of the\nBPM calibration errors are key to measure the accelerator optics .\nAs a first test\, measurement of phase advances using turn-by-turn BPM\ norbits at RHIC are presented. A dedicated experiment using known error\ns ources to test optics correction algorithms developed for the LHC\nis brie fly shown.\nSimilar techniques are employed to measure the intensity depen dent\nbetatron phase advance in the SPS. The gradient of the phase advance \nis used to reconstruct the location of transverse impedance sources.\nSi mulations from HEADTAIL to verify the effectiveness of this\ntechnique and measurements from the SPS from 2007 are discussed in detail.\n\nMore Info rmation\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=37016 LOCATION:CERN AB Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=37016 END:VEVENT BEGIN:VEVENT SUMMARY:LHC optics measurements & correction with tests in the SPS DTSTART;VALUE=DATE-TIME:20080724T090000Z DTEND;VALUE=DATE-TIME:20080724T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-37932@cern.ch DESCRIPTION:Optics correction in the LHC is challenged\nby the tight apert ure constrains and the demand of a\nrobust BPM system. Several measurement s\nand correction techniques have been evaluated\nin the last years throug h computer simulations and\nmachine experiments. The conclusions of this s tudy\nwill be presented with emphasis on the SPS tests.\n\n\n\nMore Inform ation\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=37932 LOCATION:CERN AB Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=37932 END:VEVENT BEGIN:VEVENT SUMMARY:Update on the Advanced Photon Source (APS) - Now and in Future DTSTART;VALUE=DATE-TIME:20080725T090000Z DTEND;VALUE=DATE-TIME:20080725T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-37736@cern.ch DESCRIPTION:The Advanced Photon Source is a 7GeV electron storage ring 3rd \ngeneration x-ray source in Chicago Illinois\, which serves 3500 annual\n users who produce over 1000 peer-reviewed papers every year in areas\nfrom medicine to physics. The facility is planning for future upgrades\nrangin g from beamline improvements to a possible new energy-recovery\nLINAC sour ce. Following a review of the science demands for an\nimproved x-ray sourc e\, I will discuss especially the beamline\ninstrumentation and accelerato r improvements which we are considering\nand the route to achieving these. \n\n- PLEASE NOTE UNUSUAL DAY ! -\n\nMore information\n\nhttp://indico.cer n.ch/conferenceDisplay.py?confId=37736 LOCATION:CERN AB Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=37736 END:VEVENT BEGIN:VEVENT SUMMARY:LHC Transverse Beam-Based Feedbacks DTSTART;VALUE=DATE-TIME:20080904T090000Z DTEND;VALUE=DATE-TIME:20080904T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-39637@cern.ch DESCRIPTION:The LHC requires an excellent control of particle losses which will be\nprovided by the LHC Cleaning and Machine Protection System. The performance\nand function of these systems depends critically on the stabi lity of the beam\nand may eventually limit the LHC performance.\nIn order to counteract environmental and accelerator-inherent beam\nperturbation so urces\, control of the key beam parameters - orbit\, tune\,\nenergy\, coup ling and chromaticity - will be an integral part of LHC\noperation. Since manual correction of these parameters may reach its limit\nwith respect to required precision and expected time-scales\, the LHC is the\nfirst proto n collider that requires automatic feedback control systems for\nsafe and reliable machine operation.\nThis seminar provides an overview on the stab ility\, design and architecture of\nthe LHC beam-based feedback systems.Mo re information\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=39637 LOCATION:CERN AB Auditorium Prevessin URL:http://indico.cern.ch/conferenceDisplay.py?confId=39637 END:VEVENT BEGIN:VEVENT SUMMARY:Differential Forms in Electromagnetism: What are they good for? DTSTART;VALUE=DATE-TIME:20081002T090000Z DTEND;VALUE=DATE-TIME:20081002T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-41162@cern.ch DESCRIPTION:The calculus of differential forms has proven over the past de cades \nto be an adequate and well-adapted tool for the formulation of the \nclassical electromagnetic field theory. Advantages w.r.t. vector- \nor tensor-calculus are found\, e.g.\, in the strict distinction between \nmet ric and topological concepts\, as well as in the representation of \nfield s and operators without any reference to coordinates. \nMoreover\, the for malism is applicable for arbitrary dimension (e.g.\, \n2-\, 3-\, 4-dimensi onal field problems)\, and arbitrary degrees of forms \n(e.g.\, scalar- vs . vector-potential formulation). It also lends itself \nin a natural way t o discretization\, since many object have discrete \ncounterparts in the s etting of algebraic topology.\n\nIn the further course of the talk a frame work for dimensional reduction \nof field problems is presented that is ba sed solely on differential forms \non manifolds. It can be applied to prob lems of arbitrary dimension\, \ndegree of forms\, and metric. As a consequ ence\, 4-D field problems are \nreduced to two coupled and transient (3+1) -D field problems in exactly the \nsame way a 3-D problem can be reduced t o two coupled (2+1)-D problems. \nAs an application\, the Schiff Paradoxon is discussed\, and compared to a \n2-D formulation of a 3-D field problem with helical symmetry.\n\n\nMore information\n\nhttp://indico.cern.ch/con ferenceDisplay.py?confId=41162 LOCATION:CERN AB Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=41162 END:VEVENT BEGIN:VEVENT SUMMARY:CNGS: First Year of Operation DTSTART;VALUE=DATE-TIME:20081120T100000Z DTEND;VALUE=DATE-TIME:20081120T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-44044@cern.ch DESCRIPTION:The CNGS facility (CERN Neutrinos to Gran Sasso) aims at direc tly detecting muon-neutrino to tau-neutrino oscillations. An intense muon- neutrino beam (10E17 muon-neutrino per day) is generated at CERN and direc ted over 732 km towards the Gran Sasso National Laboratory\, LNGS\, in Ita ly\, where two large and complex detectors\, OPERA and ICARUS\, are locate d. \nCNGS is the first long-baseline neutrino facility in which the measur ement of the oscillation parameters is performed by observation of tau-neu trino appearance.\n\nIn this talk\, an overview of the CNGS facility is pr esented. Major events since the commissioning of the facility in 2006 are summarized. The experience gained in operating this 500 kW neutrino beam facility is \ndescribed. Highlights on CNGS beam performance during the 20 08 run are given. \nA selection of interesting first events from the OPERA detector is shown.More information\n\nhttp://indico.cern.ch/conferenceDis play.py?confId=44044 LOCATION:CERN AB Auditorium Prevessin URL:http://indico.cern.ch/conferenceDisplay.py?confId=44044 END:VEVENT BEGIN:VEVENT SUMMARY:Beam-beam effects in a collider with a large number of bunches DTSTART;VALUE=DATE-TIME:20081211T100000Z DTEND;VALUE=DATE-TIME:20081211T110000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-46357@cern.ch DESCRIPTION:The understanding and control of the Beam-Beam Interactions (B BIs) in\nparticle colliders is fundamental to preserve beam stability and achieve\nthe optimum collider performance.\nIn the case of the Large Hadro n Collider (LHC) at CERN\, these forces\nare experienced as localized peri odic distortions when the two beams\ncross each other in the four experime ntal areas.\nThe very large number of bunches in the LHC introduce new eff ects and\ntheir study becomes a challenging task.\nThe incoherent and cohe rent beam-beam effects for the LHC have been\naddressed in a fully self co nsistent treatment. Complementary numerical\nand analytical tools have be en developed to predict bunch to\nbunch effects and the objectives are a b etter understanding of these\neffects and to provide fast numerical tools to interpret the\nobservations of single bunch measurements during the ope ration of the\ncollider and to improve its performance. The numerical pre dictability\nof bunch to bunch differences has been demonstrated and the p redictions\nhave been compared with experimental data from the Relativisti c Heavy\nIon Collider (RHIC).\n\n\nInformation: http://cern.ch/AB-seminar/ \n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=46357 LOCATION:CERN AB Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=46357 END:VEVENT BEGIN:VEVENT SUMMARY:Very High Dose Rate Detector for the LHC BLM system DTSTART;VALUE=DATE-TIME:20090129T131500Z DTEND;VALUE=DATE-TIME:20090129T141500Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-49680@cern.ch DESCRIPTION:The LHC BLM system uses ionization chambers as standard detect ors\, \nand in the areas with very high dose rates Secondary Emission \nMo nitor (SEM) chambers are employed to increase the dynamic range. \nThe SEM is characterized by a high linearity and accuracy\, \nlow sensitivity\, f ast response and a good radiation tolerance. \nThe sensitivity of the SEM was modeled in GEANT4 via the Photo-Absorption \nIonization module togethe r with a custom parameterization for the very low \nenergy secondary elect ron production using the modified Sternglass formula. \nThe simulations we re validated by comparative measurements of several \nprototypes with prot on beams of the CERN PS Booster dump line\, the SPS \ntransfer line\, the PSI Optis line and by a muon beam in the COMPASS beam \nline. Tests of the complete acquisition chain were performed in the LHC \ntest collimation a rea of the SPS and compared to the combined Fluka and \nGEANT4 simulations . The linearity and long term stability was also tested \nin the high ener gy beam dump area of the SPS. A dedicated fixed target \nexperiment was de signed in the CERN H4 secondary beam line for testing all \nthe 400 detect ors produced in IHEP Protvino. The simulations were also used \nfor the pr ediction of the signal levels expected in the LHC and for an \nabsolute do se calibration. The simulation and measurement result will be \ndiscussed and the determined accuracy of this new radiation detector will \nbe pres ented. \n\nInformation\n\nhttp://indico.cern.ch/conferenceDisplay.py?conf Id=49680 LOCATION:CERN AB Auditorium Prevessin URL:http://indico.cern.ch/conferenceDisplay.py?confId=49680 END:VEVENT BEGIN:VEVENT SUMMARY:Full Beam Impact on Materials: Studies for LHC and SPS DTSTART;VALUE=DATE-TIME:20090305T131500Z DTEND;VALUE=DATE-TIME:20090305T141500Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-52934@cern.ch DESCRIPTION:Detailed studies have been carried out over the past few years to study \nthe full impact of the LHC beam on solid targets made of diffe rent\nmaterials including copper and graphite. It has been found that ener gy\ndeposited by first few tens of proton bunches generates enough pressur e\nin the material that leads to an outgoing radial shock wave which\ndepl etes the density in the beam heated region.\nThe protons that are delivere d in subsequent bunches therefore penetrate\nmuch deeper into the target. The simulations have shown that in a solid\ncopper target the protons will penetrate up to 35 m and the target will\nbe seriously damaged. In case o f a solid graphite target the penetration\ndepth is about 10 m.\nSimilar s tudies have also been carried out considering full impact of\nthe SPS beam on copper and tungsten targets. An interesting outcome of\nthis study is that one may also study High Energy Density Physics at\nthese impressive f acilities.\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=52934 LOCATION:CERN AB Auditorium Prevessin URL:http://indico.cern.ch/conferenceDisplay.py?confId=52934 END:VEVENT BEGIN:VEVENT SUMMARY:Commissioning scenarios and tests for the LHC collimation system DTSTART;VALUE=DATE-TIME:20090312T131500Z DTEND;VALUE=DATE-TIME:20090312T141500Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-53461@cern.ch DESCRIPTION:The physics reach of the LHC requires unprecedented luminosity and beam intensity in\nproton-proton collisions. The maximum intensity in the LHC is directly coupled to the\nmaximum peak beam loss rate and the c leaning efficiency from the collimation system.\nA sophisticated LHC colli mation system is implemented in two cleaning insertions and \nin the exper imental areas. In a first phase 88 collimators are installed\, being\ncont rolled by 344 stepping motors in total. This work analyzes the achievable cleaning \nefficiency with realistic imperfections\, defines the required collimator settings and\nestablishes available tolerances for collimator s etup and transient optics changes.\nAn optimal setup strategy can optimize cleaning efficiency\, ensure passive protection\,\nmaximize tolerances\, minimize the required beam time for setup of the system and\nsupport the e xpected evolution in LHC beam intensity.\nSuch an optimized strategy is de scribed.\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=53461 LOCATION:CERN AB Auditorium Prevessin URL:http://indico.cern.ch/conferenceDisplay.py?confId=53461 END:VEVENT BEGIN:VEVENT SUMMARY:Ultrafast Low-Noise High-Power Fiber Lasers: Applications from Mat erial Processing to Next-Generation Accelerators DTSTART;VALUE=DATE-TIME:20090326T131500Z DTEND;VALUE=DATE-TIME:20090326T141500Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-54979@cern.ch DESCRIPTION:Fiber lasers are attracting much attention in recent years due to\ntheir practical features\, including high average power\, low cost\, ease\nof use\, compact size and robustness. Intense worldwide effort leads to\ncontinuously increasing performance in all technical parameters. CW\n and nanosecond fiber lasers have already taken over a significant\nportion of the industrial laser-material processing market from Nd:YAG\nand CO2 l asers. Likewise among mode-locked lasers delivering\npicoseconds and femto second pulses\, fiber lasers are getting more\nestablished\, particularly in applications such as ultrashort pulsed\nmaterial processing\, generatio n of THz pulses\, optical frequency\nmetrology\, which demand uninterrupte d operation for long periods of\ntime.  Over the past few years\, niche applications of mode-locked\nfiber lasers to FEL-type accelerators\, name ly optical synchronization\nand electron beam diagnostics are being develo ped owing to the high\nstability and low noise of fiber lasers.\nThis talk will comprise of a tutorial-level review of the state of the\nart of fibe r lasers and physics underlying their operation\, pulse\ngeneration throug h mode-locking as well as several applications of\nthese lasers currently being pursued at Bilkent University. In the\nlast part\, possible use of f iber technology to meet the challenges of\nphotoinjector laser requirement s will be discussed.\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId= 54979 LOCATION:CERN AB Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=54979 END:VEVENT BEGIN:VEVENT SUMMARY:Redundancy of the LHC Machine Protection Systems in case of Magnet Failures DTSTART;VALUE=DATE-TIME:20090402T121500Z DTEND;VALUE=DATE-TIME:20090402T131500Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-55544@cern.ch DESCRIPTION:Magnet failures with circulating beam in the LHC can lead to l osses that could \nproduce damage within times as short as 3 ms. In order to characterize the \ndistribution and evolution of these losses\, trackin g simulations with variable \nmagnetic field have been done using MADX. Th e effects on the beam of dipole and \nquadrupole failures have been charac terized and are presented for the most critical \nLHC magnets and circuits . The transverse distribution of primary losses in the \ncollimators have been studied and loss patters of secondary losses for primary impacts \na t different locations have been evaluated. Based on these studies\, the re dundancy of \nthe LHC Machine Protection Systems in case of magnet failure s with circulating beam \nis evaluated.\n\nhttp://indico.cern.ch/conferenc eDisplay.py?confId=55544 LOCATION:CERN BE Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=55544 END:VEVENT BEGIN:VEVENT SUMMARY:The LHC On-line Model DTSTART;VALUE=DATE-TIME:20090414T090000Z DTEND;VALUE=DATE-TIME:20090414T100000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-56162@cern.ch DESCRIPTION:The LHC on-line model was designed to provide on-line \noptics calulations and analysis within the LHC control system.\nIt was succesful ly used in the first LHC commissioning stages.\nI will review the design a nd implementation of the on-line \nmodel and results from beam tests in 20 08.\nPossible improvements for the next development stages will \nbe discu ssed.\n\nPLEASE NOTE UNUSUAL DAY AND TIME !\n\nhttp://indico.cern.ch/confe renceDisplay.py?confId=56162 LOCATION:CERN BE Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=56162 END:VEVENT BEGIN:VEVENT SUMMARY:Beam loss mechanisms in relativistic heavy-ion colliders DTSTART;VALUE=DATE-TIME:20090903T140000Z DTEND;VALUE=DATE-TIME:20090903T150000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-66397@cern.ch DESCRIPTION:The performance of the LHC as a heavy ion collider may be limi ted by several \nnew beam-physics processes. Electromagnetic interactions\ , in particular bound \nfree pair production (BFPP)\, between colliding io ns cause localized beam losses \nand the induced heating might quench supe rconducting magnets. A detailed assessment \nof the resulting luminosity l imitation is presented together with measurements from \nRHIC\, showing th e first evidence of BFPP induced beam losses in a collider. \nFurthermore\ , beam losses from ions fragmenting in collimators are discussed\, and \nm easurements from the SPS using an LHC prototype collimator provide experim ental \nevidence of the effect and give an opportunity to benchmark the si mulation tools \nused for the LHC. Finally\, detailed simulations of the t ime evolution of the ion \nluminosity are presented and successfully bench marked against data from several \nstores in RHIC. \nPLEASE NOTE UNUSUAL T IME !\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=66397 LOCATION:CERN BE Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=66397 END:VEVENT BEGIN:VEVENT SUMMARY:PTC: A Polymorphic Tracking Code DTSTART;VALUE=DATE-TIME:20090924T121500Z DTEND;VALUE=DATE-TIME:20090924T131500Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-68179@cern.ch DESCRIPTION:PTC is made of a large number of well known ingredients and re latively \nfew novel ingredients (perhaps only one). My contribution was t o create \na tracking instrument which combines all these ingredients into a whole \nwhich is adequate for ring (linac) dynamics. It is very much li ke cooking \na dish of haute cuisine: the ingredients are known but the fl avour is unique. \nI do not claim that my particular attempt at combining the ingredients is \nthe best\, but I am the first person to do so succes sfully. In this talk I \nwould like to describe the ingredients and my goa l for the final product. \nThis talk's central purpose is to elicit discus sions with people interested \nto use PTC or interested in the methods use d in PTC.\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=68179 LOCATION:CERN BE Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=68179 END:VEVENT BEGIN:VEVENT SUMMARY:Joint BE/EN/TE SEMINAR: Laser Scanning at CERN DTSTART;VALUE=DATE-TIME:20091210T131500Z DTEND;VALUE=DATE-TIME:20091210T141500Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-75511@cern.ch DESCRIPTION:The laser scanning technology appeared in the late nineties of the \n20th century and has been extensively used in different domains suc h \nas archeology\, architecture and also more and more for industrial app lications. \nThe results\, which can be quickly visualized\, are also very spectacular. \nSince five years\, the SU group has scanned many specific areas in the LHC \nusing this technology and the data has been used by the integration team \nbefore any new installation of equipment in the tunnel . \nThis seminar intends to present the laser scanner principle\, the resu lts of \nthese "integration" scanning that have been realized at CERN\, th e constraints \nof the technology including the data flow\, the sequences' of the treatment \nand the level of service that can be provided by the S U section. \nThen\, a brief introduction to more accurate "industrial" las er scanning will \nbe given\, but this will be the subject of another semi nar.\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=75511 LOCATION:CERN BE Auditorium Meyrin URL:http://indico.cern.ch/conferenceDisplay.py?confId=75511 END:VEVENT BEGIN:VEVENT SUMMARY:Zertifikatskurs Bilinguales Lehren und Lernen DTSTART;VALUE=DATE-TIME:20121109T130000Z DTEND;VALUE=DATE-TIME:20121109T150000Z DTSTAMP;VALUE=DATE-TIME:20130521T173941Z UID:indico-event-214452@cern.ch DESCRIPTION:Für Realschulen und Gymnasien mit bilingualem Zug\, Realschul en und Gymnasien in Vorbereitung auf einen bilingualen Zug und alle Realsc hulen und Gymnasien\, die mit bilingualen Modulen arbeiten oder arbeiten w ollen\, bieten wir ein bilinguales Zertifikat an.\n\n \n\nDieses Zertifika t ist in Zusammenarbeit zwischen der Pädagogischer Hochschule\, dem Semin ar für Didaktik und Lehrerausbildung Realschulen und dem Regierungspräsi dium Freiburg entstanden und richtet sich an alle Lehrerinnen und Lehrer\, die sich auf bilinguales Unterrichten vorbereiten wollen.\n\nEs handelt s ich um eine sehr praxisorientierte Fortbildung in Modulen\, die Sicherheit im bilingualen Unterrichten und der Erstellung von bilingualen Unterricht smaterialien verleihen soll. Wir möchten auf diese Weise einen Beitrag zu r "Gewinnung" von Fachpersonal für den Bilingualen Unterricht leisten.\n\ nhttp://indico.cern.ch/conferenceDisplay.py?confId=214452 LOCATION:PH Freiburg KG 3 /124 URL:http://indico.cern.ch/conferenceDisplay.py?confId=214452 END:VEVENT END:VCALENDAR