BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Analytical Considerations for Minimum Emittance Cells - Applicatio n to the CLIC Pre-Damping Rings DTSTART;VALUE=DATE-TIME:20080905T070000Z DTEND;VALUE=DATE-TIME:20080905T073000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-24@cern.ch DESCRIPTION:Speakers: ANTONIOU\, Fanouria ()\nThe CLIC pre-damping rings h ave to accommodate a large emittance beam\, coming in particu lar from the positron target andreduce its size to low enough values for injection int o the main damping rings. Linear lattice design options based on an analyt ical approach for minimum emittance cells are presented. In particular the parameterisation of the cells quadrupole strengths and optics function wi th respect to the emittance and drift lengths is derived. Complementary co nsiderations regarding constraints imposed by polarized positron stacking are also considered.\n\nhttp://indico.cern.ch/contributionDisplay.py?contr ibId=24&confId=26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=24&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:CLIC Damping Rings Overview DTSTART;VALUE=DATE-TIME:20080905T073000Z DTEND;VALUE=DATE-TIME:20080905T080000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-25@cern.ch DESCRIPTION:Speakers: PAPAPHILIPPOU\, Yannis (CERN)\nTriggered by the RF f requency reduction of the CLIC main linac cavities\, the damping ring para meters had to be re-evaluated and the ring's performance adapted to the ne w luminosity requirements. In particular\, the ring's lattice is being re- designed in order for the magnet parameters to become less challenging. Th e progress in other areas such as wiggler design\, radiation absorption no n-linear dynamics and collective effects will be presented. In view of a staged approach for reaching the ultimate CLIC energy\, conservative outpu t emittances are scaled from operating or approved synchrotron lattice sou rce projects. To this end\, the dependence output emittances is evaluated with respect to different beam parameters such as bunch population\, beam energy and longitudinal beam characteristics.\n\nhttp://indico.cern.ch/con tributionDisplay.py?contribId=25&confId=26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=25&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:Sources of «high energy» particles obtained with UHI lasers DTSTART;VALUE=DATE-TIME:20081003T070000Z DTEND;VALUE=DATE-TIME:20081003T080000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-26@cern.ch DESCRIPTION:Speakers: GERBAUX\, Mathias ()\nThis talk will focus on the ch aracterization of the beams of electrons and protons with energies above a few MeV produced in the interaction of an ultra-intense (~10^19 W.cm-2) l aser beam with a 10 µm thick solid target.\nThe properties of these beams (transience\, intensity and continuous energy distribution especially) ma ke their characterization complex and leaded us to develop specific method s. I will present these ones along with experimental results obtained in d ifferent facilities for the study of the electron beams as a function of t he target material.\nI will also briefly discuss an experiment carried out with similar techniques to characterize the proton beam produced at an hi gher power laser facility. This experiment demonstrated the possibility to induce nuclear reaction in a plasma and to measure quantitatively the rea ction rate in preparation. This opens the way to probing of the perturbat ion of the nucleus-electronic shells coupling by a strong electromagnetic field.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=26&confId =26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=26&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:The CLIC FFS\, ATF2 ultra-low betas and even more chromatic propos als DTSTART;VALUE=DATE-TIME:20081128T080000Z DTEND;VALUE=DATE-TIME:20081128T090000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-27@cern.ch DESCRIPTION:Speakers: TOMAS\, Rogelio (CERN)\nThe CLIC Final Focus System has a chromaticity four times larger than the ILC and its scaled testbed A TF2. In order to prove the feasibility of CLIC-like systems we have propos ed to reduce the ATF2 IP betas by a factor of four. This will also serve to study the tuning difficulty versus IP spot size hoping to extrapolate t o the smaller beam sizes of ILC and CLIC. Andrei Seryi's recent proposal o f doubling the CLIC L* will also be briefly discussed.\n\nhttp://indico.c ern.ch/contributionDisplay.py?contribId=27&confId=26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=27&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:Experimental characterization of the PHIN photo injector for CTF3: Initial simulation results and the method for emittance measurement DTSTART;VALUE=DATE-TIME:20080822T071500Z DTEND;VALUE=DATE-TIME:20080822T073000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-21@cern.ch DESCRIPTION:Speakers: METE\, Oznur ()\nWithin the framework of the second Joint Research Activity PHIN of the European CARE program\, a new photo in jector for the CTF3 drive beam has been designed and is now being construc ted in collaboration between LAL\, CCLRC and CERN. The laser driven rf pho to injectors are recent candidates for high-brightness\, low-emittance ele ctron sources motivating the research on emittance compensation theory and precise emittance measurement techniques.\nBeam dynamics simulation resul ts\, obtained from PARMELA code\, are presented. After summarizing the emi ttance growth mechanism for the photo injectors\, the emittance measuremen t by the pepper-pot method\, that will be implemented on the beamline\, is discussed. Finally the pepper-pot measurement results from the PSI OBLA 5 00 kV test-stand are presented.\n\nhttp://indico.cern.ch/contributionDispl ay.py?contribId=21&confId=26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=21&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:Outlooks for CTF3 automatic steering DTSTART;VALUE=DATE-TIME:20080822T073000Z DTEND;VALUE=DATE-TIME:20080822T074500Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-22@cern.ch DESCRIPTION:Speakers: ADLI\, Erik (European Organization for Nuclear Rese arch (CERN))\nA study to improve CTF3 automatic steering is in progress\, involving tests of dispersion-free steering as well as improved model iden tification routines (needed for model-based steering). The test-case for this study will be the CTF3 linac. The presentation gives the status and outlooks of this work.\n\nhttp://indico.cern.ch/contributionDisplay.py?co ntribId=22&confId=26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=22&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:Size Matters : Bunch Length Measurements in CTF3 DTSTART;VALUE=DATE-TIME:20080822T074500Z DTEND;VALUE=DATE-TIME:20080822T080000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-23@cern.ch DESCRIPTION:Speakers: JACOBSON\, Julian Jesse (Department of Physics and A stronomy-Northwesten University-Unkno)\nInstalled just beyond the Delay Lo op in CTF3 is an RF pick-up which measures the electromagnetic field frequ ency spectrum of the passing particles. The RF signals are split to be mea sured into four separate frequency bands and we can record the amplitude a nd phase of these signals and from there calculate the length of the parti cle bunches. It is important to monitor these lengths to ensure that ideal beam parameters are held through different structures in CTF3. I will pre sent the work that has been done in both the online and offline analysis c ode to examine the signals and present results of a recent scan.\n\nhttp:/ /indico.cern.ch/contributionDisplay.py?contribId=23&confId=26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=23&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:Compton Based Polarized Positron Sources for e-/e+ Linear Collider s DTSTART;VALUE=DATE-TIME:20081205T080000Z DTEND;VALUE=DATE-TIME:20081205T090000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-28@cern.ch DESCRIPTION:Speakers: VIVOLI\, Alessandro ()\nThere is a strong request fo r high intensity polarised positron beams for e-/e+ linear colliders (ILC\ , CLIC). In order to fulfill this request\, two schemes of polarised posit ron source have been studied: Undulator based and Compton based. I will pr esent a brief introduction to Compton based polarised positron sources and will focus in particular on the capture section scheme\, showing the desi gn and simulation results of a capture section studied at LAL-Orsay for th e ILC\, and considering the changes necessary to fit the CLIC requirements .\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=28&confId=2663 8 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=28&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:Permanent Magnet work 1995 to Present and Ground Motion Studies at Fermilab DTSTART;VALUE=DATE-TIME:20081209T090000Z DTEND;VALUE=DATE-TIME:20081209T100000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-29@cern.ch DESCRIPTION:Speakers: Dr. VOLK\, James (FNAL)\nSince 1995 research and dev elopment of permanent magnets has been done at Fermilab. The most importan t effort was the building of the Recycler ring for storage of anti protons . This is a 3.6 km in circumference ring made with 486 magnets all using s trontium ferrite permanent magnets. Up to 450 x 10^10 anti protons are sto red in this ring. Basic design parameters and assembly techniques used for the recycler will be discussed. In addition work done on adjustable quadr upole magnets will be discussed. These are high field (greater than 100 Te sla per meter gradient) quadrupoles with an adjustable gradient of 20% of full field.\n\nUnderstanding slow and fast ground motion is important for the successful operation and design for present and future colliders. Sinc e 2000 there have been several studies of ground motion at Fermilab. Sever al different types of hydro static water levels have been used to study sl ow ground motion (less than 1 Hertz) seismometers have been used for fast (greater than 1 Hertz) motions. Data have been taken at the surface and at locations 100 meters below the surface. Data and results of both slow and fast ground motion will be discussed in particular the effects of natural and cultural sources of motion.\n\nhttp://indico.cern.ch/contributionDisp lay.py?contribId=29&confId=26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=29&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:High Gradient Testing Results in 2007 DTSTART;VALUE=DATE-TIME:20080314T080000Z DTEND;VALUE=DATE-TIME:20080314T090000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-1@cern.ch DESCRIPTION:Speakers: DOEBERT\, Steffen (CERN)\, KOVERMANN\, Jan (III. Phy sikalisches Institut (B) - Rheinisch-Westfaelische Tech.)\, DUBROVSKIY\, A lexey ()\nThe results of last years high-gradient experiments will be pres ented and summarized. The focus will be on 30 GHz results obtained in CTF3 but the experiments at SLAC will be mentioned as well.\nJan will present first results of his time resolved spectrometer and Alexey will review the improvements of the automatic conditioning system and the conditioning we bsite.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=1&confId= 26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=1&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:Report from visit to KEK/ATF DTSTART;VALUE=DATE-TIME:20080111T080000Z DTEND;VALUE=DATE-TIME:20080111T090000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-0@cern.ch DESCRIPTION:Speakers: Dr. ZIMMERMANN\, Frank (AB/ABP)\, TOMAS\, Rogelio (C ERN)\nWe present highlights from our visit to KEK/ATF in December 2007\, i ncluding ATF beam studies\, the ILC-Damping Ring workshop\, and the 5th AT F2 Project meeting.\n\nhttp://indico.cern.ch/contributionDisplay.py?contri bId=0&confId=26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=0&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:Analysis of '07 CTF3 beam optics measurements DTSTART;VALUE=DATE-TIME:20080229T080000Z DTEND;VALUE=DATE-TIME:20080229T090000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-3@cern.ch DESCRIPTION:Speakers: SKOWRONSKI\, Piotr Krzysztof (Warsaw University of T echnology)\nWe present the status of the CTF3 Combiner Ring commissioning with the main focus on the optics measurements: tune\, dispersion\, respon se matrix\, and closed orbit length.\n\nhttp://indico.cern.ch/contribution Display.py?contribId=3&confId=26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=3&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:Pulsed Surface Heating: The Results of Fatigue Experiments and Es timated Material Limits DTSTART;VALUE=DATE-TIME:20080222T080000Z DTEND;VALUE=DATE-TIME:20080222T090000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-2@cern.ch DESCRIPTION:Speakers: HEIKKINEN\, Samuli Tapio ()\nThe need for high accel erating gradient for CLIC imposes considerable constraints on the material s of the accelerating structures. The surfaces exposed to high pulsed RF c urrents are subject to cyclic thermal stresses possibly resulting in surfa ce break-up by fatigue. Since "CLIC compatible" fatigue data does not exis t in the literature\, a comprehensive study was initiated. It is also like ly that pure oxygen-free copper cannot meet the current CLIC parameters so a set of candidate materials were studied. A combination of three indepen dent fatigue experiments are hoped to enable quantitative predictions for the required 20 years lifetime of the CLIC accelerating structures.\n\nhtt p://indico.cern.ch/contributionDisplay.py?contribId=2&confId=26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=2&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:SEM inspections of CTF3 structures tested in 2007 DTSTART;VALUE=DATE-TIME:20080404T070000Z DTEND;VALUE=DATE-TIME:20080404T080000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-5@cern.ch DESCRIPTION:Speakers: ARNAU IZQUIERDO\, Gonzalo (CERN)\, HEIKKINEN\, Samul i Tapio ()\nThe observations made for structures tested last year will be presented. They concern the two disc structures pi/2 and 2pi/3 after test. Also observations on 30HDS thick structure before and after RF test will be presented\, including the effects of chemical cleaning and heat treatme nt preparation for a new RF test. For 30CNSQ thick and 30HDS11 small struc tures only the characterization before testing will be shown.\n\nhttp://in dico.cern.ch/contributionDisplay.py?contribId=5&confId=26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=5&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:8 GeV C-Band Accelerator for XFEL/SPring-8 DTSTART;VALUE=DATE-TIME:20080312T100000Z DTEND;VALUE=DATE-TIME:20080312T110000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-7@cern.ch DESCRIPTION:Speakers: INAGAKI\, Takahiro (RIKEN SPring-8 center)\nThe 8 Ge V C-band electron linear accelerator is under construction at the SPring-8 site aiming at generating an FEL X-ray beam in 2010. C-band accelerator t echnology has been developed initially at KEK for the e+e- linear collider project\, and employed at the XFEL project in Japan. Since C-band generat es a high gradient acceleration field as high as 35 MV/m\, the total lengt h of the accelerator fits within 400 m\, including the injector and three bunch compressors.\nXFEL requires precise control of the rf intensity and phase for electron bunch compression. We know the largest source of the pu lse-to-pulse instability (jitter) is the klystron voltage jitter. Therefor e\, we have been developed extremely stable klystron power supply.\nThe ta lk will cover the current status of the XFEL project and hardware developm ent\, focused on the klystron power supply.\n\nhttp://indico.cern.ch/contr ibutionDisplay.py?contribId=7&confId=26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=7&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:Surface treatments and coating for beam pipes DTSTART;VALUE=DATE-TIME:20080411T070000Z DTEND;VALUE=DATE-TIME:20080411T080000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-6@cern.ch DESCRIPTION:Speakers: CHIGGIATO\, Paolo (CERN)\nIntrinsic and dynamic outg assing from beam pipe materials hinders the achievement of very low pressu re. Both surfaces and bulk contributes to the total gas load that must be evacuated by appropriate and expensive pumps. To reduce this inconvenience \, two lines of attack are generally considered: surface modification\, ei ther by chemical methods or coating\, and thermal treatments. After a summ ary of the most prominent features of outgassing\, I will focus the talk o n chemical cleaning methods and on the main approaches for the evaluation of cleanliness. Thermal treatments\, both in vacuum and in air\, will be c onsidered and the main equations for the evaluation of outgassing rate var iation will be addressed. The benefits of coating will be underlined\, in particular for NEG\, and their limitations critically analyzed\, mostly fo r polymeric substrates. Finally\, I will elaborate on some subjects of sp ecific interest for the CLIC project regarding surface treatments and char acterisation (for example low SEY materials\, low activation temperature N EG\, water outgassing in the RF cells\, electropolishing\, etc.).\n\nhttp: //indico.cern.ch/contributionDisplay.py?contribId=6&confId=26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=6&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:Status of the CLIC DR wiggler design and production at BINP DTSTART;VALUE=DATE-TIME:20080425T070000Z DTEND;VALUE=DATE-TIME:20080425T072000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-9@cern.ch DESCRIPTION:Speakers: LEVICHEV\, Evgeny ()\, ZOLOTAREV\, Konstantin ()\nA short prototype of the SC wiggler for the CLIC damping ring is now under p roduction at BINP\, Novosibirsk. In this report we describe the wiggler p arameters\, present status\, magnetic measurement approach and time schedu le. The problem of the SR power evacuation from the wiggler straight secti on (including software and illustrative results) is discussed.\n\nhttp://i ndico.cern.ch/contributionDisplay.py?contribId=9&confId=26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=9&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:PLACET Consolidation and Review DTSTART;VALUE=DATE-TIME:20080418T070000Z DTEND;VALUE=DATE-TIME:20080418T080000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-8@cern.ch DESCRIPTION:Speakers: LATINA\, Andrea (CERN)\nAfter a consolidation phase that lasted several months\, PLACET has reached its maturity. Also\, its d iffusion among several institutes improved portability\, usability and rel iability of the code. Several PLACET based studies are ongoing: study of t he emittance growth in the CLIC Injector and the Booster Linacs\, beam-bas ed alignment of the CLIC Beam Delivery System\, feedback system and static alignment of the ATF2 machine\, start-to-end simulations of fast intratra in feedback in ILC\, and crab cavity correction schemes in the ILC BDS. In this talk some of these results will be reviewed.\n\nhttp://indico.cern.c h/contributionDisplay.py?contribId=8&confId=26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=8&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:Review of the design and status of the CTF3 tail-clipper kicker DTSTART;VALUE=DATE-TIME:20080516T070000Z DTEND;VALUE=DATE-TIME:20080516T073000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-11@cern.ch DESCRIPTION:Speakers: Dr. BARNES\, Mike (CERN)\nThe CTF3 tail-clipper must have a rise-time of 5ns or less in order to minimize uncontrolled beam lo ss\; this is a technically challenging requirement. This talk reviews the design of the tail-clipper\, presents measurement data and gives an update of the status of this fast kicker.\n\nhttp://indico.cern.ch/contributionD isplay.py?contribId=11&confId=26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=11&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:Comprehensive Analysis of High Gradient RF Test Results and New RF Constraints DTSTART;VALUE=DATE-TIME:20080509T070000Z DTEND;VALUE=DATE-TIME:20080509T080000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-10@cern.ch DESCRIPTION:Speakers: GRUDIEV\, Alexej (CERN)\nComprehensive analysis of h igh gradient RF test results both at X-band and at 30 GHz will be given. An analytical model of RF breakdown will be described. A new RF field q uantity will be defined\, which limits high gradient perfomance of acceler ating structures. Implications for CLIC main linac accelerating structure design will be discussed.\n\nhttp://indico.cern.ch/contributionDisplay.py? contribId=10&confId=26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=10&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:News from the Stabilization Working Group DTSTART;VALUE=DATE-TIME:20080530T070000Z DTEND;VALUE=DATE-TIME:20080530T080000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-13@cern.ch DESCRIPTION:Speakers: HAUVILLER\, Claude (CERN)\nThe stabilization working group reports to the newly created CLIC Technical Committee. It regroups the labs collaborating on the subject. The first Stabilization day held in March was the opportunity to review the state-of-the-art and to elaborate a work plan in order to demonstrate the feasibility. This presentation wi ll give hints on what's going-on and what we could expect to achieve in th e next years.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=13 &confId=26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=13&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:Design and status of the tail-clipper collimator for CTF3 DTSTART;VALUE=DATE-TIME:20080516T073000Z DTEND;VALUE=DATE-TIME:20080516T080000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-12@cern.ch DESCRIPTION:Speakers: CHAMIZO\, Rocio (CERN)\nThe tailclipper collimator i n the TL2 transfer line will have a double functionality. At first\, it wi ll serve\, in combination with the tail-clipper kicker\, to adjust the bun ch train length arriving from the combiner ring. In addition\, when requir ed\, it will operate as an internal beam dump. The need of combining these two functionalities together with the beam parameters imposes strict cons traints on the design of the collimator. This presentation will cover the design of the Tailclipper collimator\, the key issues during its operation and the status of the production.\n\nhttp://indico.cern.ch/contributionDi splay.py?contribId=12&confId=26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=12&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:Calorimetry for a CLIC experiment: what do we know\, and what do w e need to learn? DTSTART;VALUE=DATE-TIME:20080619T070000Z DTEND;VALUE=DATE-TIME:20080619T080000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-15@cern.ch DESCRIPTION:Speakers: LINSSEN\, Lucie (CERN)\nThe seminar will address the role of calorimetry at CLIC. Using the reports made at the EFCA linear co llider workshop in Warsaw (June 9-12\, 2008)\, the present status of the c alorimetry performance simulations and hardware R&D for the three ILC dete ctor concepts will be summarised. The ILC calorimetry studies will then be addressed in the light of their validity for a CLIC experiment. As a resu lt\, a first draft calorimetry working plan for the CLIC detector study te am will be presented for discussion.\n\nhttp://indico.cern.ch/contribution Display.py?contribId=15&confId=26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=15&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:Status of photoinjectors at CERN DTSTART;VALUE=DATE-TIME:20080613T070000Z DTEND;VALUE=DATE-TIME:20080613T080000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-14@cern.ch DESCRIPTION:Speakers: ELSENER\, Konrad (CERN)\, PETRARCA\, Massimo ()\nTwo photoinjectors are presently under construction at CERN. One of them will be the source of the CALIFES probe beam in CLEX\, the other one is part o f the PHIN joint research activity in CARE. The PHIN photoinjector is bein g installed on a stand-alone test bench in CTF2. The electron bunches in b oth photoinjectors are produced by illuminating Cs-Te photocathodes with e nergetic pulses of UV laser light. The laser system is\, to a large extent \, common to both photoinjectors. Preparation of photocathodes takes place "in situ" for the CALIFES photoinjector\, while the photocathodes for PHI N are produced in the laboratory and transported to the photoinjector unde r vacuum.\nIn this CLIC meeting\, the construction- and installation-statu s of the two RF guns is summarised. The present performance of the laser s ystem is described in detail\, and the status of the photocathode producti on is given.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=14& confId=26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=14&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:Review of Nanobeam'08 DTSTART;VALUE=DATE-TIME:20080815T070000Z DTEND;VALUE=DATE-TIME:20080815T080000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-17@cern.ch DESCRIPTION:Speakers: CAPATINA\, Ofelia (CERN)\nThe Advanced Beam Dynamics Workshop NANOBEAM-2008\, organized by the Budker Institute of Nuclear Phy sics\, took place during the last week of May in the Russian city Novosibi rsk\, the so-called capital of Siberia. Two previous Nanobeam workshops to ok place at Lausanne (Switzerland) in 2002 and at Uji (Japan) in 2005. The topics covered by the workshop this year include Linear Colliders as well as Advanced Beam Science and Technology. The highlights from Nanobeam’0 8 are presented.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId =17&confId=26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=17&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:Review of CESR-TA kick-off DTSTART;VALUE=DATE-TIME:20080725T070000Z DTEND;VALUE=DATE-TIME:20080725T080000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-16@cern.ch DESCRIPTION:Speakers: RUMOLO\, Giovanni (CERN)\, Mr. CALATRONI\, Sergio (C ERN)\nThe general goals of the series of the ILCDR Workshops are to identi fy R&D specific topics for the damping rings\, review their present status and understanding through technical presentations and discussions\, and l ay out an R&D plan. The ILCDR08 at the Cornell University has focused on t he subjects of Electron Cloud and Low Emitttance Tuning\, by bringing toge ther world experts to provide guidance and suggestions for the CESR-TA pro gram\, which will be carried out over 2 years of flexible experimental ope rations.\nThe scope of this presentation will be to give a general overvie w on the results presented in the ILCDR08 Electron Cloud sessions\, and th e relative discussions. The four dedicated EC Working Sessions included th e review of recent experimental results\, simulation codes\, mitigation te chniques and future experimental planning. The main charge of the EC Worki ng Group was to ultimately identify a set of e-cloud experimental tests th at could be scheduled as part of the CesrTA program. These tests should be finalized to the validation of electron cloud modelling tools (both build -up and instability simulations)\, where possible in a parameter range rel evant for the ILC (CLIC) damping rings\, and to the demonstration of the t echniques for mitigation of electron cloud effects\, which would allow ope ration of the damping rings.\n\nhttp://indico.cern.ch/contributionDisplay. py?contribId=16&confId=26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=16&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:Commissioning of spectrometers in CTF3 DTSTART;VALUE=DATE-TIME:20080822T070000Z DTEND;VALUE=DATE-TIME:20080822T071500Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-19@cern.ch DESCRIPTION:Speakers: OLVEGAARD\, Maja ()\nAn overview of the status of th e commissioning of two spectrometers\, based on segmented dumps\, used for time resolved energy measurements of the beam.\n\nhttp://indico.cern.ch/c ontributionDisplay.py?contribId=19&confId=26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=19&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:CLIC Material Fatigue Study: A summary of results of recent observ ations and test campaigns DTSTART;VALUE=DATE-TIME:20080919T070000Z DTEND;VALUE=DATE-TIME:20080919T080000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-18@cern.ch DESCRIPTION:Speakers: AICHELER\, Markus (Ruhr-Universitaet Bochum)\nThe fa tigue of the accelerating structures material due to cyclic heating arisin g from induced eddy currents is still considered as a critical issue. Unti l now it is unclear to which extent the fatigue impairs the performance of the structure through the lifetime. Recent experiments showed that surfac e roughness and even small surface cracks did not influence the Q-factor w hich is linked to the RF-performance. In terms of breakdown there are seve ral theories how fatigue phenomena increase the breakdown rate.\nAn overvi ew of four experiments to assess fatigue behavior is presented. Namely: co nventional fatigue test\, pulsed laser test\, ultra sound swinger test and RF-fatigue test. The experimental results obtained so far will be discuss ed and interpreted with the help of material characterization techniques a vailable at CERN and the Ruhr-University Bochum.\n\nhttp://indico.cern.ch/ contributionDisplay.py?contribId=18&confId=26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=18&confId=26638 END:VEVENT BEGIN:VEVENT SUMMARY:Petawatt lasers: status quo and applications to particle accelerat ion DTSTART;VALUE=DATE-TIME:20081127T080000Z DTEND;VALUE=DATE-TIME:20081127T090000Z DTSTAMP;VALUE=DATE-TIME:20130519T013344Z UID:indico-contribution-26638-30@cern.ch DESCRIPTION:Speakers: Prof. KHAZANOV\, Efim (Institute of Applied Physics\ , Nizhniy Novgorod)\nThe petawatt laser power was achieved as early as in 1997 based on chirped pulse amplification in Nd:glass. Many institutes are going to obtain this power level\, but any substantial increase is limite d in principle by the reasons mentioned below. All devices and projects no w available may be classified into three types according to the gain mediu m they employ: 1) neodymium glass\, 2) Ti:sapphire and 3) optical parametr ic amplifiers with KDP and DKDP crystals.\nA narrow bandwidth of Nd glasse s restricts typically the compressed pulse duration to about 500 fs. Small (10cm) aperture of Ti:sapphire crystals limits the pulse energy due to op tical breakdown and self-focusing. Parametric amplifiers are free of above disadvantages. DKDP crystals have an aperture of 40 cm and more and the g ain bandwidth corresponds to the 15 fs duration of the amplified pulse. Th us\, using an optical parametric amplifier is one of the most promising wa ys of overcoming the petawatt power barrier.\nWe will discuss the petawatt laser facility in the Institute of Applied Physics of Russian Academy of Science (Nizhny Novgorod) and also the most promising applications of such lasers: electron and ion acceleration.\n\nhttp://indico.cern.ch/contribut ionDisplay.py?contribId=30&confId=26638 LOCATION:CERN 6-2-004 URL:http://indico.cern.ch/contributionDisplay.py?contribId=30&confId=26638 END:VEVENT END:VCALENDAR