Conveners
Session 2 - Scheduling LHC Operation
- Roger (Chairman) Bailey (AB-OP)
- Paul (Scientific Secretary) Collier (AB-OP)
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Dr Roger Bailey (CERN)17/01/2005, 14:00Scheduling LHC OperationIn the first years of LHC running, several different modes of operation will have to be accommodated. As an introduction to the session on scheduling, the proposal for early proton running will be outlined, the first ideas for the breakdown of a year will be recalled, and a possible timeline for the first few years will be presented.Go to contribution page
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Dr Jan Uythoven (CERN)17/01/2005, 14:15Scheduling LHC OperationoralBefore the first LHC beam operation and following the LHC hardware commissioning a cold checkout period is required to check the simultaneous functioning of the various LHC subsystem in their final configuration. Following this cold checkout period a set-up period with beam is required to verify the proper operation of all equipment, including the machine protection system, with...Go to contribution page
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Dr Jose Miguel Jimenez (CERN)17/01/2005, 14:35Scheduling LHC OperationTo achieve its nominal performances, the LHC relies on the scrubbing runs to both improve the dynamic vacuum (beam lifetime) by a vacuum cleaning effect and decrease the electron cloud induced limitations (heat load and beam instabilities) by a beam conditioning effect. An optimum scrubbing run scenario will be presented based on the vacuum cleaning and beam conditioning results in...Go to contribution page
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Dr Ghislain Roy (CERN - AB DEPARTMENT)17/01/2005, 15:00Scheduling LHC OperationThe LHC access system is the outer safety shell of the LHC underground instalations and can help (hopefully not hinder) the smooth operation of the LHC First a description of the accessible parts of the installations in different modes (beam, shutdown, short access...) and what areas of the machine will or will not be accessible for regular maintenance (scheduled or not) and quick...Go to contribution page
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Thomas pettersson (TS/CSE)17/01/2005, 15:40Scheduling LHC OperationIn view of the very complex equipment making up the LHC machine and its many ancillary subsystems, equipment maintenance policies will play a primordial role to ensure an optimal availability. As access to most of the machine systems is strictly regulated, maintenance interventions will require global co-ordination and collaboration from both CERN equipment groups and industrial support...Go to contribution page
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Dr Daniela Macina (CERN)17/01/2005, 16:00Scheduling LHC OperationoralThe experiments’ requirements for the initial commissioning of the detectors, like single beams and early collisions, will be addressed as well as the annual shutdown requests. Special needs, like the polarity switching of the LHCb and ALICE dipoles, will also be mentioned. The experiments’ requests for the Pb82 runs and special proton runs will be discussed. Possible special...Go to contribution page
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Dr John Jowett (CERN)17/01/2005, 16:25Scheduling LHC OperationoralPre-requisites for switching from p-p to Pb-Pb operation of the LHC (optics,controls, vacuum, instrumentation, etc.). Plan for commissioning the main rings with lead ions. Differences from p-p operation (RF, vacuum requirements, beam instrumentation, separation and optics in collision). Evolution of beam intensity,emittance and luminosity; effect of vacuum, the number of experiments...Go to contribution page
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Dr Jorg Wenninger (CERN)17/01/2005, 16:50Scheduling LHC OperationoralThe TOTEM experiment requires special running conditions in terms of beams, optics and stability around IR5.In addition TOTEM requests short one day runs at regular time intervals. Similar requirements apply to luminosity measurement runs at IR1. Dedicated time will have to be devoted to the commissioning of the TOTEM machine cycle and for each run, additional setup time must be...Go to contribution page