LHC-CC10, 4th LHC Crab Cavity Workshop

Session

RF Controls & Testing

16 Dec 2010, 14:00

6/2-024 - BE Auditorium Meyrin (CERN)

26. KEKB crab RF architecture & controls

Kota Nakanishi (Japan/KEK)

16/12/2010, 14:00

RF system architecture of the KEKB crab cavities including high power RF system and LLRF controls. Amplitude and phase tolerances and stability, compensation of beam loading, closed orbit and beam instabilities. Possible improvements for achieving fewer "RF trips" including operating temperature, design aspects etc..

27. SM18 test stand for crabs

Olivier Brunner (CERN)

16/12/2010, 14:20

Cryomodule assembly options at CERN, test stand for low power and high power testing, high power RF availability, availability of cryogenics, gradient performance, cavity-coupler conditioning, instrumentation, mechanical, transport issues and quality control.

28. Cryogenics for SPS, LHC & SM18

Bruno Vullierme (CERN)

16/12/2010, 14:40

Operating temperature options, crab specific cryogenics at IR1, IR5, IR4, SPS & SM18, Helium pressure and availability, cryo circuits and controls, safety valves and protection, overall installation effort,cost and time line, heat loads, impact on the overall LHC during regular operation

29. LLRF considerations for Crab Cavities

Philippe Baudrenghien (CERN)

16/12/2010, 15:00

I will first briefly present the LHC reference RF generation (one per ring) and the LLRF field control (one system per cavity). I will then concentrate on the issue of RF phase noise: The performance achieved with the LHC cavities will be presented in details and we will try to extrapolate these results to the Crab Cavities. A possible interfacing of the Crab Cavities with the 400 MHz...