Longitudinal Damping

1
Longitudinal Damping

• Booster (Bill Pellico)
• Mode based (fn fRFnfrev)
• Detect and feed back fn(-?)fsync through
  dedicated cavity
• System works and is vital to operation at high
  intensity.
• New, more generic system being built (boards out
  for fab).
• Power limited. May add second power amplifier.
• M.I. (Bill Foster havent spoken to him yet)
• Time based system detects deviations and feeds
  back correction.
• Broadband, but (possibly less efficient
  power-wise).
• Being designed and built.

2
MuCool Needs

• No beam initially, BUT
• Want to build RF test bed taking RF from Linac
  gallery
• Spare 800MHz klystron no problem
• 200 MHz 7835 test stand -gt filament time on 7835
  might be touchy subject.
• Build H- (??) beamline in 2006
• Fully switched at 15Hz -gt No effect on non-MuCool
  beam
• Considering early stripping foil-gt proton line
• Low intensity commissioning beam (8 weeks),
  totally parasitic
• After that, about 3 of total Linac pulses/week,
  including 1hr of dedicated 15Hz running