RHUL Physics Department TWiki> PP/JAI Web>RFLab>BeamPosition>AtfBpmDigital>AtfBpmNewLogBook>AtfBpmNewLogBook_20130426 (14 May 2013, YoungimKim)
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Present: Young-Im, Stewart, Jochem

ATF logbook: http://atf.kek.jp/twiki/bin/view/ATFlogbook/Log20130426s

Recalibrate a few BPMs with different magnet strength (current) to determine scale factor dependence on magnet strength

  • QM13FF
  • Original quad strength +42.367
  • Steps of 20 A
  • Calibration -125, 125, 5 steps
  • Old calibration values X : {-1.156, -115.9} Y : {-1.0513, -70.9}
  • Charge 0.6e10

Quad strength X calibration file Y calibration file X IQ rotation X Scale Y IQ rotation Y Scale comment
+42.367 bpmAllMoverCalibration_20130426_183001.dat.gz bpmAllMoverCalibration_20130426_183406.dat.gz -1.0658 110.18 -0.9357 70.03  
+82.367 bpmAllMoverCalibration_20130426_183907.dat.gz bpmAllMoverCalibration_20130426_184315.dat.gz -1.0580 121.39 -0.9052 64.63 charge lower at IP
+2.367 bpmAllMoverCalibration_20130426_184840.dat.gz bpmAllMoverCalibration_20130426_185353.dat.gz -1.0713 102.00 -0.9538 76.46  
+22.367 bpmAllMoverCalibration_20130426_185908.dat.gz bpmAllMoverCalibration_20130426_190710.dat.gz -1.0682 107.71 -0.9574 72.35  
+62.367 bpmAllMoverCalibration_20130426_191142.dat.gz bpmAllMoverCalibration_20130426_191557.dat.gz -1.0563 116.95 -0.9449 66.14  

  • QD10AFF
  • Original quad strength +13.297
  • Steps of 40 A
  • Calibration -250, 250, 5 steps
  • Old calibration values X : {-0.6292, -930.9} Y : {-0.3283, -1256.4}
  • Charge 0.6e10

Quad strength X calibration file Y calibration file X IQ rotation X Scale Y IQ rotation Y Scale comment
+3.297 bpmMoverCalibration_20130426_192501.dat.gz bpmAllMoverCalibration_20130426_193042.dat.gz -0.6411 952.9 -0.3376 1232.05  
+23.297 bpmAllMoverCalibration_20130426_193718.dat.gz bpmAllMoverCalibration_20130426_194232.dat.gz -0.6458 904.9 -0.3378 1300.2  
+43.297 bpmAllMoverCalibration_20130426_194707.dat.gz bpmAllMoverCalibration_20130426_195223.dat.gz -0.6551 864.4 -0.3245 1371.05  

Corrector scans. 50 pulses, 5 steps, waveform logging.

ZH1X optics FS file, bpmFs_20130426_200207_ZH1X.dat

Corrector Current file
ZH1X 0.0 bpmWfAllLog_20130426_195940.dat
ZH1X -0.025 bpmWfAllLog_20130426_200247.dat
ZH1X -0.05 bpmWfAllLog_20130426_200822.dat
ZH1X 0.025 bpmWfAllLog_20130426_201122.dat
ZH1X 0.05  

ZV1X optics FS file, bpmFs_20130426_202357_ZV1X.dat

Corrector Current file
ZV1X 0.0 bpmWfAllLog_20130426_195940.dat
ZV1X -0.01 bpmWfAllLog_20130426_201416.dat
ZV1X -0.02 bpmWfAllLog_20130426_201752.dat
ZV1X 0.01 bpmWfAllLog_20130426_202052.dat
ZV1X 0.02 bpmWfAllLog_20130426_202350.dat

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Topic revision: r3 - 14 May 2013 - YoungimKim

 
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