LHC Machine Protection Review

Session

Events leading to beam losses

S05

12 Apr 2005, 11:10

building 40 (CERN)

13. Failures in magnet and powering systems

Dr Rudiger Schmidt (CERN)

12/04/2005, 11:10

Events leading to beam losses

The most likely reason for the loss of the circulating beam is an incorrect magnetic field in one or more magnets. In this presentation a catalogue of failures in the magnet powering system will be presented, and the time constant for beam loss will be discussed. Most likely are quenches in the superconducting magnets, in particular at 7 TeV. Other failures are the discharge of...

17. Objects that can move into the beam

Dr Rossano Giachino (CERN)

12/04/2005, 11:40

Events leading to beam losses

The beams in the LHC can be intercepted by many different types of objects moving into the vacuum chambers. These include devices designed for beam monitoring, machine protection and for data taking by the experiments. Moving these objects can only be permitted under certain conditions. Interlocks should prevent quenches or even damage in case of wrong actions. An inventory of such...

19. Fast kickers (tune and aperture)

Dr Jan Uythoven (CERN)

12/04/2005, 12:05

Events leading to beam losses

The hardware parameters and the assumed operational scenarios of the LHC tune and aperture kicker systems are presented. From this the potential damage caused by the two systems is deduced. It is shown that especially the aperture kicker can lead to significant damage tot the LHC and an adequate interlock system is required. The proposed combined hardware and software solution, which...