MagnetScan

Magnet scan for rescattering and poletip. (Proposal)

== Rescattering

• Integrating mode
• 2 uA (to be safe) on Lead
• Adjust HV to get a good signal for 2 uA
• Compare signal on detector for new HV to normal HV
• Detune spectrometer up in momentum. All magnets adjusted.
• 1%, 2%, 4%, 7%, 10%, 15%, 20%, 25%
• Note, Jack said the septum could go up but wasn't sure how high. The septum power supply may limit us.

• A scan down may be considered. Motivation is for poletip scattering and just in general to understand the HRS.
• Same conditions as above.
• -1%, -2%, -4%, -7%, -10% (negative)

== Poletip Scan

• Start with all magnets at tune P (nominal).
• Counting mode.
• 20 nA on Lead
  • 200k events per run
  • GEMs ON
  • sieve IN and sieve OUT;

• Q2 scan 0%; +15% to -25% in steps of 5;