Conveners
Session 4 - Other Issues affecting Beam Commissioning I
- Stephan (Chairman) Russenschuck (AT-MEL)
- Rhodri (Scientific Secretary) Jones (AB-BDI)
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Mr Davide Bozzini (CERN)18/01/2005, 14:00Other Issues affecting Beam Commissioning IThe electrical integrity and the safe operation of the superconducting electrical circuits are crucial issues for the successful commissioning with and without beam and for the operation of the LHC machine. Beam based measurements may require in- situ verification of the magnet polarities. The detection, diagnostics, repair and re-qualification of electrical faults and the...Go to contribution page
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Dr Stephan Russenschuck (CERN AT-MEL-EM)18/01/2005, 14:25Other Issues affecting Beam Commissioning IThe presentation will cover the polarity definitions and the conventions in the different coordinate systems used for beam tracking, field computation and magnetic measurements. In particular the definition of what a skew dipole magnet is, could lead to misunderstanding. Continuity problems in the spool piece bus bars which could affect corrector magnet polarity are addressed....Go to contribution page
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Reiner Denz (CERN AT-MEL-PM)18/01/2005, 14:50Other Issues affecting Beam Commissioning IReiner Denz Quench Protection System (QPS) After a short introduction to the LHC Quench Protection System (QPS), an overview about the expected availability and reliability of the system will be given. The consequences of equipment failures and the required intervention times for repair will be discussed. The capabilities of the QPS data acquisition system with respect to...Go to contribution page
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Dr Trevor Linnecar (CERN)18/01/2005, 15:15Other Issues affecting Beam Commissioning IAt nominal beam intensities, the loss of control of even a single RF cavity will require an immediate beam dump to avoid severe damage to RF equipment. During LHC beam commissioning, different beam structures and in particular lower intensities will be used. In this case it is possible that not all RF failures require a beam dump and that the beam may survive even if perturbed....Go to contribution page
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Dr Eva Barbara Holzer (CERN)18/01/2005, 16:00Other Issues affecting Beam Commissioning IThis presentation will deal with the main beam instrumentation systems required for the initial commissioning period. The emphasis will be on the set-up and testing of the hardware involved, in particular BPM polarity checks, the determination of BLM interlock limits, tests of the electronics and calibration procedures. The amount of final testing for which the beam is required...Go to contribution page
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Markus Brugger (CERN SC/RP)18/01/2005, 16:25Other Issues affecting Beam Commissioning IoralThe radiation protection of the personnel who will perform interventions in the beam cleaning insertions and install different phases of machine components is mandatory and includes the design of equipment and the establishment of work procedures. Dose rates are expected to reach values at which any maintenance has to be planned in advance and the design adopted in order to...Go to contribution page
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Dr Luigi Scibile (TS/CSE)18/01/2005, 16:50Other Issues affecting Beam Commissioning IThe latest discussions on the LHC Access Safety system, held during the first sessions of the Access Safety Working Group, have emphasized the goal of the system to prevent personal exposure to radiological hazards. The personnel protection against electrical hazards is outside the scope of the project. From the control room point of view, the LHC Access Safety System will authorize,...Go to contribution page