BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Status of the ASTA Facility Machine Protection System at Fermilab DTSTART;VALUE=DATE-TIME:20120606T121500Z DTEND;VALUE=DATE-TIME:20120606T123000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-42@cern.ch DESCRIPTION:Speakers: WARNER\, Arden (Fermilab)\nhttp://indico.cern.ch/con tributionDisplay.py?contribId=42&sessionId=5&confId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=42&sessionId=5& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Studies for the CLIC TBM BLM System DTSTART;VALUE=DATE-TIME:20120607T073000Z DTEND;VALUE=DATE-TIME:20120607T080000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-24@cern.ch DESCRIPTION:Speakers: MALLOWS\, Sophie (University of Liverpool (GB))\nThe CLIC 21 km main linac and corresponding 24 drive beam decelerators are ar ranged into modular structures referred to as the 'two beam modules'. The baseline technology choice for the CLIC Beam Loss Monitoring system (as pr esented in the conceptual design report) is based on ionization chambers f or the two beam modules. However\, a more cost effective BLM design\, base d on Cherenkov light generated in optical fibers is being investigated. A model for light production and propagation has been developed and validate d with measurements. Monte Carlo simulations of loss scenarios in the CLIC tunnel have been performed\, to determine the suitability of an optical f iber system in terms of sensitivity and dynamic range. \nThe ability to d istinguish between losses from each of the two beams will also be presente d. Issues specifically related to the use of Cherenkov fibers such as the achievable longitudinal position resolution for long pulses and radiation hardness will be discussed.\n\nhttp://indico.cern.ch/contributionDisplay.p y?contribId=24&sessionId=6&confId=185561 LOCATION:CERN IT Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=24&sessionId=6& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Diagnostics for Machine Protection at FERMI@Elettra DTSTART;VALUE=DATE-TIME:20120607T080000Z DTEND;VALUE=DATE-TIME:20120607T083000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-25@cern.ch DESCRIPTION:Speakers: FRÖHLICH\, Lars (Sincrotrone Trieste)\nThe talk pre sents the design and performance of the main diagnostic subsystems of the MPS for the FERMI@Elettra free-electron laser: Beam loss position monitors based on the detection of Cherenkov light in quartz fibers with multi-pix el photon counters\, conventional ionization chambers with a novel fronten d electronics package\, and solid-state RADFET dosimeters providing an onl ine measurement of the absorbed dose in undulator magnets.\n\nhttp://indic o.cern.ch/contributionDisplay.py?contribId=25&sessionId=6&confId=185561 LOCATION:CERN IT Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=25&sessionId=6& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Equipment fault detection DTSTART;VALUE=DATE-TIME:20120607T085000Z DTEND;VALUE=DATE-TIME:20120607T092000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-26@cern.ch DESCRIPTION:Speakers: Mr. PUCCIO\, Bruno (CERN)\nThe organization and the setup of the equipment interlocks are described through the CERN Beam Inte rlock System (BIS) solution. The latter is the common solution to protect various types of CERN accelerators: ring (LHC\, SPS...)\, linear (Linac4) or transfer lines. The BIS is more than a protection system\, it is the ke y element to get efficient beam operation\, to enhance machine availabilit y and to perform self testing. These aspects are illustrated through the m ain features provided by the Beam Interlock System.\n\nhttp://indico.cern. ch/contributionDisplay.py?contribId=26&sessionId=6&confId=185561 LOCATION:CERN IT Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=26&sessionId=6& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Beam Quality Assessment for the LHC beams real time and post-morte m DTSTART;VALUE=DATE-TIME:20120607T092000Z DTEND;VALUE=DATE-TIME:20120607T095000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-27@cern.ch DESCRIPTION:Speakers: Miss. KAIN\, Verena (CERN)\nThe LHC has stringent re quirements on transverse and longitudinal beam quality to avoid beam insta bilities\, maximize transmission and performance. Dedicated automatic qual ity checks are carried out in the last LHC injector and in the LHC after e ach injection. These systems have successfully indicated problems with bea m quality at many occasions and guarantee the required excellent performan ce from the injectors. The monitored parameters\, analysis and infrastruc ture of the automatic analysis systems are described. The importance of lo gging. long time storage together with appropriate tools to display trends of monitored parameters will also be discussed. Missing aspects of the cu rrent quality checks will be mentioned.\n\nhttp://indico.cern.ch/contribut ionDisplay.py?contribId=27&sessionId=6&confId=185561 LOCATION:CERN IT Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=27&sessionId=6& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Beam loss mechanisms : observation from the LHC DTSTART;VALUE=DATE-TIME:20120606T142000Z DTEND;VALUE=DATE-TIME:20120606T145000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-20@cern.ch DESCRIPTION:Speakers: PONCE\, Laurette (CERN)\nAfter 2 years of operation pushing the beam parameters\, we gained some experience on the different b eam loss mechanisms observed in the LHC.\nSome of these mechanisms are exp ected\, like the losses during injection process\, some others have been d iscovered with the higher intensities like the UFOs. This talk will addres s the three types of losses (operational\, equipment failure and transient beam losses) as seen in the LHC and in the transfer to LHC.\n\nhttp://ind ico.cern.ch/contributionDisplay.py?contribId=20&sessionId=5&confId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=20&sessionId=5& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Overview of Failure Mode Studies for ILC and CLIC DTSTART;VALUE=DATE-TIME:20120606T145000Z DTEND;VALUE=DATE-TIME:20120606T152000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-21@cern.ch DESCRIPTION:Speakers: Dr. LATINA\, Andrea (CERN)\nFailures in the ILC and in the CLIC can lead to beam loss\, or even damage the machine. Also failu res that do not lead to beam loss can affect the luminosity performance\, in particular since some time is required to recover from them. During the last years several different failures scenarios have been investigated\, and their impact on the machine performance has been being studied. At thi s purpose\, a number of simulation codes have been developed\, perfected\, and utilized: to track the beam including effects such as wakefields and dynamical machine alignment\; to simulate halo and tail generation\; to ev aluate energy deposition and beam-halo interaction with collimators. A rev iew of the main studies is presented\, including a short description of th e principal tools.\n\nhttp://indico.cern.ch/contributionDisplay.py?contrib Id=21&sessionId=5&confId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=21&sessionId=5& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Failure studies at CLIC main Linac and Beam Delivery System DTSTART;VALUE=DATE-TIME:20120606T152000Z DTEND;VALUE=DATE-TIME:20120606T155000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-22@cern.ch DESCRIPTION:Speakers: MAIDANA\, Carlos Omar ()\nThe CERN TE-MPE group has the mission to develop and maintain the systems to protect machine compone nts from damage caused by ill controlled conditions. Various failure scena rios were studied and the potential damage these failures could cause to t he machine structures was estimated. First results of the beam response to kick induced failures in the main LINAC and in the beam delivery system ( BDS) sections are presented together with possible collimator damage scena rios.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=22&session Id=5&confId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=22&sessionId=5& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Beam loss detection DTSTART;VALUE=DATE-TIME:20120607T070000Z DTEND;VALUE=DATE-TIME:20120607T073000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-23@cern.ch DESCRIPTION:Speakers: DEHNING\, Bernd (CERN)\nThe ILC or CLIC beam loss de tection will have to function as a protection and tuning system of the bea ms. \nLosses need to be measured at numerous locations and depending on li mits action have to be \ninitiated by the system. With the triggering of a utomatic actions the aspects of reliability and on the \nother side the co nsequences of wrongly initiated actions have to be regarded. \nThe talk w ill concentrate on these subjects using examples from the LHC system and t he experience from its operation.\n\nhttp://indico.cern.ch/contributionDis play.py?contribId=23&sessionId=6&confId=185561 LOCATION:CERN IT Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=23&sessionId=6& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Beam Loss Mechanisms and Mitigation at SLC DTSTART;VALUE=DATE-TIME:20120607T120000Z DTEND;VALUE=DATE-TIME:20120607T123000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-28@cern.ch DESCRIPTION:Speakers: ROSS\, Marc (Fermilab)\nThe SLAC Linear Collider (SL C) was intended in part to demonstrate that linear colliders could work. E ven though it did not meet luminosity goals\, physics goals were met and r emain comparable to LEP results. Stabilizing the SLC was the most difficul t challenge and transitions in beam power\, caused by frequent machine pro tect system faults were the most serious source of instability. MPS faults \, in turn\, were caused through amplification of relatively small damping ring impedance-related longitudinal instabilities in a kind of chain reac tion that involved the ring\, bunch compressor\, normal-conducting linac a nd collimation systems.\n\nhttp://indico.cern.ch/contributionDisplay.py?co ntribId=28&sessionId=7&confId=185561 LOCATION:CERN IT Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=28&sessionId=7& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:The post-LINAC collimation system of CLIC: Machine Protection Aspe cts DTSTART;VALUE=DATE-TIME:20120607T123000Z DTEND;VALUE=DATE-TIME:20120607T130000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-29@cern.ch DESCRIPTION:Speakers: TOMAS GARCIA\, Rogelio (CERN)\, RESTA LOPEZ\, Javier (IFIC\, Valencia University)\nThe main functions of the post-linac collim ation system for future linear colliders are: the cleaning of the beam hal o particles which potentially can generate detector background at the Inte raction Point (IP)\; and the protection of the Beam Delivery System (BDS) by minimising the activation and damage of downstream equipment. In this p resentation we focus mainly on the machine protection function of the ener gy collimation section against errant or miss-steered beams due to failure modes in the main linac. In order to investigate and identify critical sc enarios\, we have performed simulations of failure modes in the main linac \, and evaluated their impact in terms of collimator damage. In addition\, a thermo-mechanical analysis of the energy spoiler has been performed usi ng the simulation codes FLUKA and ANSYS. The results of these studies are discussed in this presentation. Finally\, we also discuss some alternative collimation schemes\, such as nonlinear optical layouts\, which could hel p to guarantee the survivability of the collimators in case of beam impact .\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=29&sessionId=7 &confId=185561 LOCATION:CERN IT Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=29&sessionId=7& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Welcome DTSTART;VALUE=DATE-TIME:20120606T070000Z DTEND;VALUE=DATE-TIME:20120606T071000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-40@cern.ch DESCRIPTION:Speakers: STAPNES\, Steinar (CERN)\nhttp://indico.cern.ch/cont ributionDisplay.py?contribId=40&sessionId=4&confId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=40&sessionId=4& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Purpose of machine protection\, risks\, challenges\, issues and ob jectives DTSTART;VALUE=DATE-TIME:20120606T071000Z DTEND;VALUE=DATE-TIME:20120606T073000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-41@cern.ch DESCRIPTION:Speakers: JONKER\, Michael (CERN)\nhttp://indico.cern.ch/contr ibutionDisplay.py?contribId=41&sessionId=4&confId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=41&sessionId=4& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Experience from MP in Flash\, lessons for XFEL DTSTART;VALUE=DATE-TIME:20120606T080000Z DTEND;VALUE=DATE-TIME:20120606T083000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-1@cern.ch DESCRIPTION:Speakers: STAACK\, Martin ()\nThis presentation gives an overv iew of the Machine Protection System (MPS) for the Free electron LASer at Hamburg FLASH. It describes MPS components and functionality\, development over the years. FLASH started as a test facility\, had been extended and is now operated as a user facility. Similarities and differences of the MP S for FLASH and XFEL will be presented as well as operation experiences at FLASH. Especially the high current test runs for ILC revealed a few disad vantages in the design and gave lessons for XFEL MPS.\n\nhttp://indico.cer n.ch/contributionDisplay.py?contribId=1&sessionId=4&confId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=1&sessionId=4&c onfId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Experience from MP in LHC DTSTART;VALUE=DATE-TIME:20120606T073000Z DTEND;VALUE=DATE-TIME:20120606T080000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-0@cern.ch DESCRIPTION:Speakers: Dr. ZERLAUTH\, Markus (CERN)\nThe LHC machine protec tion system (MPS) has been constantly evolving over the past decade\, to a ssure safe machine operation whilst avoiding additional downtime due to th e required complex architecture of protection and interlock systems. An ov erview of the present machine protection architecture will be presented\, along with experience in operating the MPS systems throughout the various commissioning phases and early years of beam operation. Encountered and ou tstanding issues for LHC machine protection and potential lessons for CLIC will be highlighted.\n\nhttp://indico.cern.ch/contributionDisplay.py?cont ribId=0&sessionId=4&confId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=0&sessionId=4&c onfId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Machine protection plans in ESS DTSTART;VALUE=DATE-TIME:20120606T092000Z DTEND;VALUE=DATE-TIME:20120606T095000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-3@cern.ch DESCRIPTION:Speakers: ČUK\, Gregor (CosyLab)\nThe European Spallation Sou rce (ESS) aims to be the brightest source of neutrons in the world for sci entific research. Located in Lund\, Sweden\, it is currently in the pre-co nstruction phase with a plan to deliver first neutrons in 2019. The baseli ne specification is for a 5 MW proton power\, long pulse facility deliveri ng neutrons to 22 independent instruments that will foster major advances from aging and health\, materials technology for sustainable and renewable energy\, to experiments in quantum physics\, biomaterials and nano-scienc e.\nHigh beam power\, which can severely damage accelerator or target comp onents as well as the beam pipe itself\, demands fast and reliable Machine Protection System (MPS). The goal of the MPS is to improve the operation safety by reducing the risk of damage to the components of the machine.\nH undreds of diagnostic devices will monitor the machine and the beam health and in case of excessive beam loss or other critical malfunction the beam will be shut down. Only few microseconds are available for MPS to trigger mitigation\, therefore very fast interlock system needs to be designed. M PS will provide time-stamping and logging of all input changes. All logs w ill be synchronized and will serve as a vital input to post-mortem analysi s. Support for commissioning and different machine modes will be embedded. Important part of the MPS will be a Beam Permit System (BPS) with a task to check that the facility is configured and secured appropriately\, and t hat all relevant equipment is operating and within the desired setpoint ra nges for the operator-selected mode.\n\nhttp://indico.cern.ch/contribution Display.py?contribId=3&sessionId=4&confId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=3&sessionId=4&c onfId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Machine protection at the Jefferson Lab 1MW CEBAF electron acceler ator DTSTART;VALUE=DATE-TIME:20120606T085000Z DTEND;VALUE=DATE-TIME:20120606T092000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-2@cern.ch DESCRIPTION:Speakers: Mr. MAHONEY\, Kelly (TJNAF)\nJefferson Lab accelerat ors include the 1MW CEBAF electron machine as well as the high intensity F ree Electron Laser. Borrowing risk management practices from the militar y\, aerospace and chemical processing industries\, Jefferson Lab manages a graded approach to identify and manage risk presented by beam operations. Constraints are then incorporated in to system level requirements acros s multiple subsystems. This talk will describe the engineering transition of the Jefferson Lab CEBAF and FEL accelerator machine protection systems to a risk based systems engineering approach. The approach addresses the traditional goals of maximum machine availability\, minimal short and lon g term damage\, and configurability. In addition\, a systems engineering approach also addresses enabling and supporting processes like project man agement\, controls infrastructure\, personnel competency\, and long term s ystem effectiveness. We will conclude with a brief look at ongoing work t o integrate the systems\, software\, and cyber security assurance practice s.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=2&sessionId=4 &confId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=2&sessionId=4&c onfId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Machine protection challenges in CLIC DTSTART;VALUE=DATE-TIME:20120606T101500Z DTEND;VALUE=DATE-TIME:20120606T104000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-5@cern.ch DESCRIPTION:Speakers: JONKER\, Michael (CERN)\nThe proposed Compact Linear Collider (CLIC) is based on a two-beam acceleration scheme. The energy of 48 high intensity\, low energy drive beam trains is extracted and transfe rred to 2 low intensity\, high energy main beams. A single drive beam-trai n has a damage potential that is two orders of magnitude above the level c ausing structural damage in copper. The extreme charge density due to the microscopic beam size gives the main beam already at low energies a damage potential four orders of magnitude above the safe level.\nThe machine pro tection system in CLIC has to cope with a wide variety of failures\, from real time failures (RF breakdowns\, kickers misfiring)\, to equipment fail ures\, to beam instabilities (caused by e.g. temperature drifts\, slow gro und motions).\nThis presentation introduced the baseline for the CLIC mach ine protection philosophy based on passive\, active and permit based prote ction.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=5&session Id=4&confId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=5&sessionId=4&c onfId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Machine protection challenges in ILC\, DTSTART;VALUE=DATE-TIME:20120606T095000Z DTEND;VALUE=DATE-TIME:20120606T101500Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-4@cern.ch DESCRIPTION:Speakers: ROSS\, Marc (Fermilab)\nThe ILC Machine Protection S ystem (MPS) is that collection of devices intended to keep the beam from d amaging machine components. With nominal average beam power of 20 MW\, con sisting of 14000 bunches of 2e10 ppb each per second\, and typical beam si zes near 10 x 1 micron\, both the damage caused by a single bunch and the residual radiation or heating caused by small (fractional) losses of a man y bunches are important for MPS. The MPS consists of 1) a single bunch dam age mitigation system\, 2) an average beam loss limiting system\, 3) a ser ies of abort kickers and dumps\, 4) a restart ramp sequence\, 5) a beam pe rmit system\, 6) a fault analysis recorder system\, 7) a strategy for limi ting the rate with which magnetic fields (and insertable device positions) can change\, 8) a sequencing system that provides for the appropriate lev el of protection depending on machine mode or state\, and 9) a protection collimator system. The systems listed must be tightly integrated in order to minimize time lost to aberrant beams and associated faults\n\nhttp://in dico.cern.ch/contributionDisplay.py?contribId=4&sessionId=4&confId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=4&sessionId=4&c onfId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:A Systems Engineering Approach to Machine Protection DTSTART;VALUE=DATE-TIME:20120608T095000Z DTEND;VALUE=DATE-TIME:20120608T102000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-39@cern.ch DESCRIPTION:Speakers: Mr. MAHONEY\, Kelly (TJNAF)\nJefferson Lab accelerat ors include the 1MW CEBAF electron machine as well as the high intensity F ree Electron Laser. Borrowing risk management practices from the militar y\, aerospace and chemical processing industries\, Jefferson Lab manages a graded approach to identify and manage risk presented by beam operations. Constraints are then incorporated in to system level requirements acros s multiple subsystems. This talk will describe the engineering transition of the Jefferson Lab CEBAF and FEL accelerator machine protection systems to a risk based systems engineering approach. The approach addresses the traditional goals of maximum machine availability\, minimal short and lon g term damage\, and configurability. In addition\, a systems engineering approach also addresses enabling and supporting processes like project man agement\, controls infrastructure\, personnel competency\, and long term s ystem effectiveness. We will conclude with a brief look at ongoing work t o integrate the systems\, software\, and cyber security assurance practice s.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=39&sessionId= 8&confId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=39&sessionId=8& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Failure onset detection DTSTART;VALUE=DATE-TIME:20120608T124000Z DTEND;VALUE=DATE-TIME:20120608T130000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-12@cern.ch DESCRIPTION:Speakers: Dr. SCHMICKLER\, Hermann (CERN)\nhttp://indico.cern. ch/contributionDisplay.py?contribId=12&sessionId=9&confId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=12&sessionId=9& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Beam loss mechanisms DTSTART;VALUE=DATE-TIME:20120608T122000Z DTEND;VALUE=DATE-TIME:20120608T124000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-11@cern.ch DESCRIPTION:Speakers: SCHULTE\, Daniel (CERN)\nhttp://indico.cern.ch/contr ibutionDisplay.py?contribId=11&sessionId=9&confId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=11&sessionId=9& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Machine protection and operational availability\, issues and solut ions DTSTART;VALUE=DATE-TIME:20120608T120000Z DTEND;VALUE=DATE-TIME:20120608T122000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-10@cern.ch DESCRIPTION:Speakers: Mr. SCHMIDT\, Rudiger (CERN)\nhttp://indico.cern.ch/ contributionDisplay.py?contribId=10&sessionId=9&confId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=10&sessionId=9& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Failure mitigation DTSTART;VALUE=DATE-TIME:20120608T130000Z DTEND;VALUE=DATE-TIME:20120608T132000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-13@cern.ch DESCRIPTION:Speakers: JONKER\, Michael (CERN)\nhttp://indico.cern.ch/contr ibutionDisplay.py?contribId=13&sessionId=9&confId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=13&sessionId=9& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Risk assessment in Linac-4\, management and tools DTSTART;VALUE=DATE-TIME:20120608T092000Z DTEND;VALUE=DATE-TIME:20120608T095000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-38@cern.ch DESCRIPTION:Speakers: APOLLONIO\, Andrea (Vienna University of Technology (AT))\nIn high energy accelerators the need for Protections Systems is ess ential to protect the machines from possible failures. As the beam energy increases\, beam-induced damage can cause serious consequences in terms of repair costs and down-time of the accelerator. Hence the risk associated to a failure has to be estimated for all possible failure scenarios. The p resent work shows the adopted approach and the considerations done to deri ve a complete failure catalogue for the future injector complex (Linac4-tr ansfer lines-PSB). A dedicated website has been created in order to make t he acquired knowledge available for the public.\n\nhttp://indico.cern.ch/c ontributionDisplay.py?contribId=38&sessionId=8&confId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=38&sessionId=8& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Conclusions and closure DTSTART;VALUE=DATE-TIME:20120608T134000Z DTEND;VALUE=DATE-TIME:20120608T140000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-15@cern.ch DESCRIPTION:Speakers: STAPNES\, Steinar (CERN)\nhttp://indico.cern.ch/cont ributionDisplay.py?contribId=15&sessionId=9&confId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=15&sessionId=9& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Operational aspects DTSTART;VALUE=DATE-TIME:20120608T132000Z DTEND;VALUE=DATE-TIME:20120608T134000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-14@cern.ch DESCRIPTION:Speakers: ROSS\, Marc (Fermilab)\nhttp://indico.cern.ch/contri butionDisplay.py?contribId=14&sessionId=9&confId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=14&sessionId=9& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Beam loss mechanisms in Flash/Desy DTSTART;VALUE=DATE-TIME:20120606T123000Z DTEND;VALUE=DATE-TIME:20120606T130000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-17@cern.ch DESCRIPTION:Speakers: KAUKHER\, Alexander (DESY)\nThe Free Electron Laser in Hamburg (FLASH) is based on a linac with superconducting RF technology. The linac is designed to produce high power electron beams. Loss of only a fraction of the beam can damage the machine. \nMachine Protection System of FLASH controls modes of operation and prevents dangerous conditions. T he Dark Current of the FLASH gun is the largest source of lost particles. Operational issues related to the FLASH gun dark current and dynamics of c avity beam loading will be presented.\n\nhttp://indico.cern.ch/contributio nDisplay.py?contribId=17&sessionId=5&confId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=17&sessionId=5& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Beam loss experience from CTF3 DTSTART;VALUE=DATE-TIME:20120606T133000Z DTEND;VALUE=DATE-TIME:20120606T140000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-19@cern.ch DESCRIPTION:Speakers: TECKER\, Frank (CERN)\nCTF3 tests the drive beam gen eration for CLIC\, as well as the two-beam acceleration. Although the beam power and the damage potential are considerably lower than at CLIC\, it c an give important insight to considerations for the machine protection at CLIC.\nThe presentation will show the experience at CTF3 for different los s mechanisms and their consequences\, as well as the results of a dedicate d experiment to measure the effects of RF breakdown induced kicks on the b eam\, and will give a short description of interlocks to reduce losses.\n\ nhttp://indico.cern.ch/contributionDisplay.py?contribId=19&sessionId=5&con fId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=19&sessionId=5& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Halo formation and losses in CLIC DTSTART;VALUE=DATE-TIME:20120606T130000Z DTEND;VALUE=DATE-TIME:20120606T133000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-18@cern.ch DESCRIPTION:Speakers: Dr. BURKHARDT\, Helmut (CERN)\nThe talk will shortly review our knowledge of halo production by standard processes and in part icular beam-gas scattering. Analytic estimates and simulation tools (PLACE T+HTGEN) exist and have been used to predict the halo for the drive beam\, LINAC and beam delivery systems of CLIC.\nThis allows to show that halo a nd losses from halo should be rather low in CLIC under design conditions a nd provides insight in which energy range and location in the system are m ore critical for halo production and losses.\n\nhttp://indico.cern.ch/cont ributionDisplay.py?contribId=18&sessionId=5&confId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=18&sessionId=5& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Reliable beam extraction DTSTART;VALUE=DATE-TIME:20120607T135000Z DTEND;VALUE=DATE-TIME:20120607T142000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-31@cern.ch DESCRIPTION:Speakers: Dr. UYTHOVEN\, Jan (CERN)\nBeam extraction systems a re used in a linear accelerator complex at the combiner rings\, at the dam ping rings\, for beam distribution and for emergency dumps if the bunch sp acing allows. The highly brilliant beams used have a large damage potentia l in case of extraction failures. The failures can be categorised in trigg er errors\, timing errors and amplitude errors. The LHC beam dumping syste m is taken as an example on how to obtain safe extraction systems by using redundancy\, surveillance\, mitigation and automated post mortem system. The second example shows the present development for the extraction system of the CLIC damping rings using an inductive adder.\n\nhttp://indico.cern .ch/contributionDisplay.py?contribId=31&sessionId=7&confId=185561 LOCATION:CERN IT Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=31&sessionId=7& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Novel advanced materials for next-generation Beam Intercepting Dev ices DTSTART;VALUE=DATE-TIME:20120607T130000Z DTEND;VALUE=DATE-TIME:20120607T133000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-30@cern.ch DESCRIPTION:Speakers: BERTARELLI\, Alessandro (CERN)\nThe introduction of new\, extremely energetic particle accelerators has brought about the need for advanced cleaning and protection systems in order to safely increase the beam energy and intensity to unprecedented levels. A new family of mat erials\, combining the physical\, thermal\, electrical and mechanical prop erties which are required by the extreme working conditions existing in hi gh energy/high intensity accelerators is being developed: Metal Matrix Com posites with Diamond or Graphite reinforcements. These materials are to co mbine the outstanding thermal and physical properties of diamond and graph ite with the electrical and mechanical properties of metals. \nMaterials b eing produced and characterized include Copper-Diamond\, Silver-Diamond\, Molybdenum-Diamond and Molybdenum-Graphite.\nA comprehensive material test ing program\, including a first-of-its-kind experiment submitting material s to intense proton beams\, is being deployed. These activities are comple mented by advanced numerical simulations allowing to study the extreme phe nomena which these materials may undergo.\n\nhttp://indico.cern.ch/contrib utionDisplay.py?contribId=30&sessionId=7&confId=185561 LOCATION:CERN IT Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=30&sessionId=7& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Reliability of the CERN Beam Interlock System: Past\, Present and Future DTSTART;VALUE=DATE-TIME:20120608T085000Z DTEND;VALUE=DATE-TIME:20120608T092000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-37@cern.ch DESCRIPTION:Speakers: Dr. TODD\, Benjamin (CERN)\nThe Beam Interlock Syste m (BIS) is a high-speed\, high-dependability interlock system used through out the CERN accelerator complex. It has been designed to provide the req uired protection level whilst having a minimal impact on machine availabil ity. This talk explains the methods used to predict the reliability of th e BIS during the design phase\, the observed system performance with respe ct to predictions\, and an outlook for reliability considerations in depen dable systems.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=3 7&sessionId=8&confId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=37&sessionId=8& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:'AvailSim' - Simulating the Operation and Maintenance of an Accele rator Complex DTSTART;VALUE=DATE-TIME:20120608T080000Z DTEND;VALUE=DATE-TIME:20120608T083000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-36@cern.ch DESCRIPTION:Speakers: ROSS\, Marc (Fermilab)\nAvailSim is a Monte-Carlo si mulation tool that uses Excel and Matlab to show a timeline of operation o f a large accelerator complex. The simulation uses and table listing all k ey accelerator components with mean time to fail (MTBF) and mean time to r epair (MTTR) data taken from data recorded at DESY\, Fermilab and SLAC fro m the 1990's. The model includes the full segmentation of the machine so t hat repairs can be done in one segment while necessary machine development is done upstream. A key parameter in the model is the time to recover ope ration after a downtime. AvailSim has been a useful tool to aid in the mac hine design\, especially aspects such as equipment location (in /out of tu nnel)\, access and operations segmentation and redundancy.\n\nhttp://indic o.cern.ch/contributionDisplay.py?contribId=36&sessionId=8&confId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=36&sessionId=8& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Clic Intensity rampup DTSTART;VALUE=DATE-TIME:20120608T073000Z DTEND;VALUE=DATE-TIME:20120608T080000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-35@cern.ch DESCRIPTION:Speakers: JONKER\, Michael (CERN)\nThe permit based machine pr otection system of CLIC depends on the measured performance of the machine during the previous cycle. This presentation addresses the bootstrap proc edure which\, starting from safe beams\, stepwise increases the beam inten sities.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=35&sessi onId=8&confId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=35&sessionId=8& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:RF breakdown recovery DTSTART;VALUE=DATE-TIME:20120608T070000Z DTEND;VALUE=DATE-TIME:20120608T073000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-34@cern.ch DESCRIPTION:Speakers: WUENSCH\, Walter (CERN)\nThe breakdown rate for the CLIC main linac rf system must be less than 3x10-7/pulse/m in order to ens ure that less than 1% of all machine pulses lose luminosity due to beam de flections caused by the breakdowns. What’s known so far about the statis tics of breakdown is reviewed and an operational scenario for reacting to breakdown on following pulses is described.\n\nhttp://indico.cern.ch/contr ibutionDisplay.py?contribId=34&sessionId=8&confId=185561 LOCATION:CERN Kjell Johnsen Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=34&sessionId=8& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:CLIC Interlock system: preliminary study DTSTART;VALUE=DATE-TIME:20120607T145000Z DTEND;VALUE=DATE-TIME:20120607T152000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-33@cern.ch DESCRIPTION:Speakers: NOUVEL\, Patrice Denis Eric (Insitut National Polyte chnique de Toulouse (FR))\nThis presentation gives an overview of the CLIC interlock system study. From the Machine Protection strategy\, there is a need to cover some anticipated failures. This leads to a necessity of an Interlock system. An explanation of the two principles that are comprised by this system is given. The main challenges and the current solution plan ned are then described. Finally\, the ongoing works to validate this solut ion are addressed.\n\nhttp://indico.cern.ch/contributionDisplay.py?contrib Id=33&sessionId=7&confId=185561 LOCATION:CERN IT Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=33&sessionId=7& confId=185561 END:VEVENT BEGIN:VEVENT SUMMARY:Safe by design Clic powering DTSTART;VALUE=DATE-TIME:20120607T142000Z DTEND;VALUE=DATE-TIME:20120607T145000Z DTSTAMP;VALUE=DATE-TIME:20130520T134005Z UID:indico-contribution-185561-32@cern.ch DESCRIPTION:Speakers: NISBET\, David (CERN)\nA large number of magnet powe ring systems are required for the CLIC machine complex. Several studies ha ve been made to ensure a reliable and safe powering system that meets the CLIC technical requirements. The presentation will introduce the powering concepts proposed for the drive beam and main beam magnets to ensure appro priate machine availability\, and introduce the methods used to estimate t he reliability for the system.\n\nhttp://indico.cern.ch/contributionDispla y.py?contribId=32&sessionId=7&confId=185561 LOCATION:CERN IT Auditorium URL:http://indico.cern.ch/contributionDisplay.py?contribId=32&sessionId=7& confId=185561 END:VEVENT END:VCALENDAR