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C and S band BPM system update
A. Aryshev, S. T. Boogert, S. Molloy, C. Swinson
04/21/23 1ATF2 Software meeting
Introduction
• System design and implementation• Calibration progress• Problems with phase stability and beam
motion• Results from calibration
04/21/23 2ATF2 Software meeting
Mover calibrationMover calibration Bump calibrationBump calibration
Calibration
• Performed many quad mover calibration• Single bump to calibrate QD10 to QD21X• S-band system not yet done (reference cavity
still missing)– Will be magnet mover based
04/21/23 3ATF2 Software meeting
Hardware installation
Schematic hardware installationPhotographs of Hardware installation
04/21/23 4ATF2 Software meeting
Software installation
04/21/23 ATF2 Software meeting 5
MREF1XMREF1XMREF3FFMREF3FFMREF2FFMREF2FFMREF1FFMREF1FF
Reference problems
• Typically the reference cavity is downstream of the BPMs– Problematic when doing mover based calibration– Not been such a problem recently but difficult
when line is poorly steered– Only currently using one reference (MREF1X)
04/21/23 6ATF2 Software meeting
Trigger/clock stability
04/21/23 7ATF2 Software meeting
Mover calibration example
04/21/23 8ATF2 Software meeting
Beam bump calibration example
04/21/23 9ATF2 Software meeting
Future work
• S-band soon– Reference integration before April beam?
• Fix trigger/clock problems– Install beam arrival diode– RF locking system
• Code upgrades– Saturation– Tone calibration– Environment monitoring (temperature, LO, cal-tone)
04/21/23 10ATF2 Software meeting