FP420 backgrounds and RF measurement

1
FP420 backgroundsand RF measurement

• Rob Appleby
• Manchester Christmas meeting
• 20th December 2007

2
FP420

• Studied topics in (in 2007)
• RF bench measurements of the pockets, in
  collaboration with Roger and Federico (next talk)
• Optics and beam tracking
• Consideration of machine backgrounds at 420m,
  which consist of contributions from
• Beam-gas scattering
• Multi-turn halo (Betatron and momentum
  collimators)
• Proton loss (machine-induced)

3
BDSIM model of beamline
Blue magnets Red others Drifts invisible
Constructed beamline for IP1 (z direction)
4
Dispersive trajectories
Exhume
DPMJet
5
Photons
6
Background plans for 2008

• Complete FP420 TDR, with particular attention
  paid to
• Backgrounds from all sources
• Optics and acceptance
• RF measurements and simulations
• Write papers on FP420 work to date
• Continue background work to understand
• the impact on the operating detector and timing
• background proton sources from the IP
• More simulations on beam halo and beam-gas
• Develop FP420 start-to-end simulation
• Beginning at the IP and ending at the signal from
  the detector
• Incorporating all real machine conditions
• Giving an on-line model for operating the
  experiment
• Study upgraded optics possibilities and
  acceptance
• Plus much more.