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