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LHC-CC10, 4th LHC Crab Cavity Workshop

15–17 Dec 2010
CERN
Europe/Zurich timezone

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Session

Machine Protection

16 Dec 2010, 10:30
6/2-024 - BE Auditorium Meyrin (CERN)

6/2-024 - BE Auditorium Meyrin

CERN

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  1. 53. Machine Protection Specifications
    Dr Jorg Wenninger (CERN)
    16/12/2010, 10:40
  2. 21. How to make crabs LHC safe & collimation compatible
    Daniel Wollmann
    16/12/2010, 10:50
    Review of LHC machine protection and LHC collimation system. Constraints and requirements that crab cavities must comply with. Possible approaches for ensuring their compatibility.
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  3. 22. Failure scenarios and mitigation
    Joachim Tuckmantel (CERN)
    16/12/2010, 11:00
    Crab cavity failures such as abrupt amplitude and phase changes, RF trips, cavity quench are characterized with appropriate time scales. Their potential impact on the LHC beams and mitigation of such failure scenarios within the LHC machine protection constraints is discussed.
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  4. 9. KEK-B crab trips & RF signals
    Kota Nakanishi (Japan/KEK)
    16/12/2010, 11:20
    Cavity trips and associated RF & beam observations at KEKB. Types of trips, their signature and the (presumed) root causes. Possible mitigation schemes for LHC.
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  5. 23. LHC studies for RF trips
    Rama Calaga (BNL), Tobias Baer (Universitaet Hamburg)
    16/12/2010, 11:40
    Results from particle tracking using the LHC collimation system in Sixtrack and MADX to determine local signatures of the particle losses due to abrupt crab cavity failures. Detailed scans to determine specifications on fast cavity failures is derived to ensure machine preotection during the LHC cycle at ultimate intensities. Some aspects of upgrade optics is also studied.
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  6. 24. Interplay of transverse damper and crab cavities
    Wolfgang Hofle (CERN)
    16/12/2010, 12:00
    Transverse damper settings in the presence of crabbed beams and beam-beam. The interplay between the damper and the crab cavity for single bunch and bunch trains. Suppression of the effect of phase noise on the beam and of potential instabilities from crab cavities to relax tolerances on crab-cavity RF controls.
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  7. 25. Discussion, Machine Protection
    16/12/2010, 12:20
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