Author: Yee-Rendon, B.
Paper Title Page
MOODN4 Beam Losses Due to Abrupt Crab Cavity Failures in the LHC 76
 
  • R. Calaga
    BNL, Upton, Long Island, New York, USA
  • T. Baer, J. Barranco, R. Tomás, J. Wenninger, F. Zimmermann
    CERN, Geneva, Switzerland
  • B. Yee-Rendon
    CINVESTAV, Mérida, Mexico
 
  Funding: This work partially supported by the US Department of Energy through the US LHC Accelerator Research Program (LARP).
A major concern for the implementation of crab crossing in a future high-luminosity LHC (HL-LHC) is machine protection in an event of a fast crab-cavity failure. Certain types of abrupt crab-cavity phase and amplitude changes are simulated to characterize the effect of failures on the beam and the resulting particle-loss signatures. The time-dependent beam loss distributions around the ring and particle trajectories obtained from the simulations allow for a first assessment of the resulting beam impact on LHC collimators and on sensitive components around the ring. The simulation results are used to derive tolerances on the maximum rate of change in crab-cavity phase and amplitude which can be allowed with regard to machine safety.
 
slides icon Slides MOODN4 [1.620 MB]