RHUL Physics Department TWiki> PP/JAI Web>BeamPosition>ClicBpm>ClicLogBook>ClicLogBook20130513 (12 Jul 2013, FrankieCullinan)
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Corrector, Charge and Frequency Scans and Calibration

Corrector Scans

  • Beam energy: 208 MeV
  • Final triplet quadrupoles switched off
  • Processing file: ddc_130513_135629.json
  • Processing file including reentrant BPMs: ddcAll_130513_130311.json

Horizontal Corrector Scans

  • Single corrector scans

Filename Corrector half-range/A Steps IQ rotation/degrees Error/degrees χ2/d.o.f. Scale factor/mm Error/mm χ2/d.o.f. Jitter/mm Standard deviation/mm
ctf3cbpmCorr_20130513_160832.dat 0.4 9 -47.58 0.14 1.84 1.085 0.003 43.94 0.0174 0.0054
ctf3cbpmAllCorr_20130513_161245.dat 0.4 9 -47.37 0.15 0.64 1.102 0.003 25.87 0.0197 0.0031
ctf3cbpmAllCorr_20130513_161628.dat 0.3 7 -47.1 0.2 0.14 1.103 0.004 6.58 0.0182 0.0029
ctf3cbpmAllCorr_20130513_161854.dat 0.3 7 -47.16 0.19 0.70 1.093 0.003 11.91 0.0168 0.0034
ctf3cbpmAllCorr_20130513_162203.dat 0.2 9 -47.2 0.2 0.29 1.677 0.006 11.28 0.0264 0.0062
ctf3cbpmAllCorr_20130513_162425.dat 0.3 7 -46.84 0.19 0.63 1.089 0.003 7.37 0.0180 0.0034
ctf3cbpmAllCorr_20130513_162648.dat 0.3 7 -47.6 0.2 1.19 1.090 0.004 6.97 0.0173 0.0046
ctf3cbpmAllCorr_20130513_162902.dat 0.3 7 -48.19 0.18 2.34 1.084 0.003 31.11 0.01440 0.00185

  • Phase of middle (+/- 0.2A range) scan very dependent on processing file, to be investigated
  • Two corrector scan

Filename Corrector half-range/A Steps IQ rotation/degrees Error/degrees χ2/d.o.f. Scale factor/mm Error/mm χ2/d.o.f. Jitter/mm Standard deviation/mm
ctf3cbpmAllCorr_20130513_163635.dat 0.5 6 -47.3 0.2 0.36 1.027 0.004 6.93 0.0185 0.0032
ctf3cbpmAllCorr_20130513_163900.dat 0.5 6 -47.3 0.2 1.39 1.004 0.003 8.19 0.0161 0.0036
ctf3cbpmAllCorr_20130513_164108.dat 0.5 6 -47.0 0.2 0.86 1.015 0.003 18.58 0.0189 0.0032
ctf3cbpmAllCorr_20130513_164325.dat 0.5 6 -47.26 0.18 0.51 1.015 0.003 5.52 0.0172 0.0044
ctf3cbpmAllCorr_20130513_164601.dat 0.5 6 -47.2 0.2 0.30 1.008 0.003 3.22 0.0171 0.0036
ctf3cbpmAllCorr_20130513_164852.dat 0.5 6 -47.62 0.18 0.92 1.017 0.003 6.20 0.0158 0.0030

Vertical Corrector Scans

  • Single corrector scans

Filename Corrector half-range/A Steps IQ rotation/degrees Error/degrees χ2/d.o.f. Scale factor/mm Error/mm χ2/d.o.f. Jitter/mm Standard deviation/mm
ctf3cbpmAllCorr_20130513_165152.dat 0.3 7 -43.9 0.5 1.33 1.054 0.010 2.93 0.0127 0.0027
ctf3cbpmAllCorr_20130513_165445.dat 0.3 7 -45.1 0.4 2.69 1.116 0.009 1.86 0.0133 0.0022
ctf3cbpmAllCorr_20130513_165718.dat 0.3 7 -46.6 0.5 2.41 1.176 0.009 76.18 0.0138 0.0020
ctf3cbpmAllCorr_20130513_170009.dat 0.25 6 -44.5 0.6 0.44 1.214 0.012 4.47 0.01610 0.00175
ctf3cbpmAllCorr_20130513_170237.dat 0.25 6 -45.5 0.5 0.50 1.137 0.011 9.69 0.01546 0.00188
ctf3cbpmAllCorr_20130513_170452.dat 0.2 5 -45.8 0.7 0.37 1.107 0.014 1.66 0.0154 0.0028
ctf3cbpmAllCorr_20130513_170658.dat 0.2 5 -45.5 0.6 1.05 0.974 0.011 21.59 0.0169 0.0047
ctf3cbpmAllCorr_20130513_170842.dat 0.2 5 -46.3 0.6 0.09 1.082 0.011 10.56 0.0146 0.0036
ctf3cbpmAllCorr_20130513_171022.dat 0.2 5 -45.8 0.8 0.25 1.197 0.017 14.60 0.0189 0.0053
ctf3cbpmAllCorr_20130513_171140.dat 0.2 5 -46.2 0.8 0.16 1.115 0.014 13.45 0.01556 0.00160

  • Two corrector scans

Filename Corrector half-range/A Steps IQ rotation/degrees Error/degrees χ2/d.o.f. Scale factor/mm Error/mm χ2/d.o.f. Jitter/mm Standard deviation/mm
ctf3cbpmAllCorr_20130513_171749.dat 0.5 6 -46.0 0.4 3.50 1.015 0.008 41.46 0.0122 0.0030
ctf3cbpmAllCorr_20130513_172025.dat 0.5 6 -46.0 0.6 1.88 1.080 0.011 29.53 0.0114 0.0025
ctf3cbpmAllCorr_20130513_172615.dat 0.4 9 -45.8 0.5 1.17 0.955 0.008 2.67 0.0131 0.0025
ctf3cbpmAllCorr_20130513_173014.dat 0.4 9 -45.9 0.5 0.73 1.040 0.010 9.40 0.0138 0.0029
ctf3cbpmAllCorr_20130513_173338.dat 0.4 9 -45.5 0.5 0.34 1.057 0.010 6.53 0.0174 0.0046
ctf3cbpmAllCorr_20130513_173741.dat 0.4 9 -45.4 0.6 0.29 1.082 0.011 34.49 0.0159 0.0038
ctf3cbpmAllCorr_20130513_174407.dat 0.4 9 -49.9 0.9 39.20 2.98 0.05 342.95 0.0406 0.0079
ctf3cbpmAllCorr_20130513_175040.dat 0.4 9 -49.0 0.7 68.67 2.48 0.04 539.09 0.0320 0.0067

  • For the last two calibrations above, the correctors had migrated out of the original range and there was some serious scraping
  • File ctf3cbpmAllCorr_20130513_173014.dat has a problem and doesn't load. Most likely, the sample window length changes somewhere in the middle

Long Train Corrector Scans

  • Pulse length switched to 60 ns
  • Can see scan in the reentrant BPMs in the horizontal case at least
  • Tune files: ctf3cbpmAll_20130513_180909.dat, ctf3cbpmAll_20130513_181657.dat
  • Processing file: ddcAll_130513_161657.json

Vertical

  • two correctors

Filename Corrector half-range/A Steps
ctf3cbpmAllCorr_20130513_180234.dat 0.4 9
ctf3cbpmAllCorr_20130513_180750.dat 0.4 9
ctf3cbpmAllCorr_20130513_182008.dat 0.4 9

Horizontal

  • Single corrector

Filename Corrector half-range/A Steps
ctf3cbpmAllCorr_20130513_182312.dat 0.5 6
ctf3cbpmAllCorr_20130513_182454.dat 0.5 6
ctf3cbpmAllCorr_20130513_182710.dat 0.5 6
ctf3cbpmAllCorr_20130513_182855.dat 0.5 6
ctf3cbpmAllCorr_20130513_183030.dat 0.5 6
ctf3cbpmAllCorr_20130513_183215.dat 0.5 6
ctf3cbpmAllCorr_20130513_183530.dat 0.5 6

  • Two correctors

Filename Corrector half-range/A Steps
ctf3cbpmAllCorr_20130513_183930.dat 0.5 6
ctf3cbpmAllCorr_20130513_184133.dat 0.5 6
ctf3cbpmAllCorr_20130513_184329.dat 0.5 6
ctf3cbpmAllCorr_20130513_184712.dat 0.5 6
ctf3cbpmAllCorr_20130513_184906.dat 0.5 6
ctf3cbpmAllCorr_20130513_185057.dat 0.5 6
ctf3cbpmAllCorr_20130513_185243.dat 0.5 6

Frequency Scan

  • Swept pulse frequency by changing LO voltage.
  • Short pulse length (2.2ns).

VCO Voltage Filename
4.3 ctf3cbpmAll_20130513_152752.dat
4.35 ctf3cbpmAll_20130513_152832.dat
4.4 ctf3cbpmAll_20130513_152910.dat
4.45 ctf3cbpmAll_20130513_152953.dat
4.5 ctf3cbpmAll_20130513_153038.dat
4.55 ctf3cbpmAll_20130513_153119.dat
4.6 ctf3cbpmAll_20130513_153205.dat
4.65 ctf3cbpmAll_20130513_153244.dat
4.7 ctf3cbpmAll_20130513_153332.dat
4.75 ctf3cbpmAll_20130513_153416.dat
4.8 ctf3cbpmAll_20130513_153459.dat
4.85 ctf3cbpmAll_20130513_153541.dat
4.9 ctf3cbpmAll_20130513_153625.dat
4.95 ctf3cbpmAll_20130513_153703.dat
5 ctf3cbpmAll_20130513_153741.dat
5.05 ctf3cbpmAll_20130513_153827.dat
5.1 ctf3cbpmAll_20130513_153917.dat
5.15 ctf3cbpmAll_20130513_154005.dat
5.2 ctf3cbpmAll_20130513_154049.dat

  • Changed pulse arrival time to get more stable charge. Same pulse length.

VCO Voltage Filename
4.3 ctf3cbpmAll_20130513_154649.dat
4.35 ctf3cbpmAll_20130513_154734.dat
4.4 ctf3cbpmAll_20130513_154816.dat
4.45 ctf3cbpmAll_20130513_154858.dat
4.5 ctf3cbpmAll_20130513_154941.dat
4.55 ctf3cbpmAll_20130513_155026.dat
4.6 ctf3cbpmAll_20130513_155105.dat
4.65 ctf3cbpmAll_20130513_155152.dat
4.7 ctf3cbpmAll_20130513_155234.dat
4.75 ctf3cbpmAll_20130513_155317.dat
4.8 ctf3cbpmAll_20130513_155411.dat
4.85 ctf3cbpmAll_20130513_155454.dat
4.9 ctf3cbpmAll_20130513_155545.dat
4.95 ctf3cbpmAll_20130513_155629.dat
5 ctf3cbpmAll_20130513_155715.dat
5.05 ctf3cbpmAll_20130513_155800.dat
5.1 ctf3cbpmAll_20130513_155840.dat
5.15 ctf3cbpmAll_20130513_155920.dat
5.2 ctf3cbpmAll_20130513_160008.dat

  • 60 ns pulse length.

VCO Voltage Filename
4.3 ctf3cbpmAll_20130513_185554.dat
4.35 ctf3cbpmAll_20130513_185643.dat
4.4 ctf3cbpmAll_20130513_185730.dat
4.45 ctf3cbpmAll_20130513_185815.dat
4.5 ctf3cbpmAll_20130513_185901.dat
4.55 ctf3cbpmAll_20130513_185948.dat
4.6 ctf3cbpmAll_20130513_190032.dat
4.65 ctf3cbpmAll_20130513_190119.dat
4.7 ctf3cbpmAll_20130513_190212.dat
4.75 ctf3cbpmAll_20130513_190259.dat
4.8 ctf3cbpmAll_20130513_190345.dat
4.85 ctf3cbpmAll_20130513_190425.dat
4.9 ctf3cbpmAll_20130513_190515.dat
4.95 ctf3cbpmAll_20130513_190602.dat
5 ctf3cbpmAll_20130513_190643.dat
5.05 ctf3cbpmAll_20130513_190725.dat
5.1 ctf3cbpmAll_20130513_190812.dat
5.15 ctf3cbpmAll_20130513_190853.dat
5.2 ctf3cbpmAll_20130513_191045.dat

Charge Scan

  • 60 ns pulse length
  • Processing file: ddc_130513_192528_max.json
  • Phase flattening: ddcMax_130513_192528.json

Picomotor Setting Filename
-16800 ctf3cbpmAll_20130513_192229.dat
-16750 ctf3cbpmAll_20130513_192302.dat
-16700 ctf3cbpmAll_20130513_192323.dat
-16650 ctf3cbpmAll_20130513_192344.dat
-16600 ctf3cbpmAll_20130513_192404.dat
-16550 ctf3cbpmAll_20130513_192424.dat
-16500 ctf3cbpmAll_20130513_192443.dat
-16450 ctf3cbpmAll_20130513_192510.dat
-16400 ctf3cbpmAll_20130513_192528.dat
-16350 ctf3cbpmAll_20130513_192549.dat
-16300 ctf3cbpmAll_20130513_192611.dat
-16250 ctf3cbpmAll_20130513_192632.dat
-16200 ctf3cbpmAll_20130513_192656.dat
-16150 ctf3cbpmAll_20130513_192718.dat
-16100 ctf3cbpmAll_20130513_192747.dat
-16050 ctf3cbpmAll_20130513_192811.dat
-16000 ctf3cbpmAll_20130513_192846.dat
-15950 ctf3cbpmAll_20130513_192924.dat
-15900 ctf3cbpmAll_20130513_192959.dat
-15850 ctf3cbpmAll_20130513_193030.dat
-15800 ctf3cbpmAll_20130513_193104.dat
-15750 ctf3cbpmAll_20130513_193146.dat
-15700 ctf3cbpmAll_20130513_193212.dat
-15650 ctf3cbpmAll_20130513_193305.dat
-15600 ctf3cbpmAll_20130513_193334.dat
-15550 ctf3cbpmAll_20130513_193411.dat
-15500 ctf3cbpmAll_20130513_193440.dat
-15450 ctf3cbpmAll_20130513_193510.dat

1305charge.png
  • Gradient: -0.1640 +/- 0.0009. Chi squared/d.o.f.: 1.55
  • Corresponds to sensitivity at cavity of around 7.03 V/nC.

Corrector Calibration

Using Screen CA.MTV0790

  • First corrector, vertical (+/-1 A, 11 steps): ctf3cbpmAllCorr_20130513_201822.dat, ctf3cbpmAllCorr_20130513_202132.dat
  • Second corrector, vertical (+/-2 A, 11 steps): ctf3cbpmAllCorr_20130513_202527.dat, ctf3cbpmAllCorr_20130513_202821.dat
  • Two corrector, vertical (+/-1.8 A, 10 steps): ctf3cbpmAllCorr_20130513_203341.dat, ctf3cbpmAllCorr_20130513_215457.dat

Corrector 0 Corrector 1 Combined Simultaneous
Position/mm A-1 -2.50 -1.24 1.26 1.30
Tilt/mm m-1 A-1 -0.63 -0.64 0.00 0.00

  • First corrector, horizontal (+/-1.4 A, 8 steps): ctf3cbpmAllCorr_20130513_203806.dat, ctf3cbpmAllCorr_20130513_204041.dat
  • Second corrector, horizontal (+/-2 A, 9 steps): ctf3cbpmAllCorr_20130513_204428.dat, ctf3cbpmAllCorr_20130513_204718.dat
  • Two corrector, horizontal (+/-2 A, 9 steps): ctf3cbpmAllCorr_20130513_205103.dat, ctf3cbpmAllCorr_20130513_205810.dat

Corrector 0 Corrector 1 Combined Simultaneous
Position/mm A-1 -2.56 -1.24 1.30 1.31
Tilt/mm m-1 A-1 -0.65 -0.64 -0.01 0.00

Using CA.BPM0750

  • First corrector, vertical (+/-3 A, 11 steps): ctf3cbpmAllCorr_20130513_210418.dat, ctf3cbpmAllCorr_20130513_210715.dat
  • Second corrector, vertical (+/-9 A, 10 steps): ctf3cbpmAllCorr_20130513_211157.dat, ctf3cbpmAllCorr_20130513_211450.dat
  • Two correctors, vertical (+/-3 A, 11 steps): ctf3cbpmAllCorr_20130513_212103.dat, ctf3cbpmAllCorr_20130513_212409.dat

Corrector 0 Corrector 0 (BPM0710) Corrector 1 Combined Simultaneous
Position/mm A-1 1.59 0.48 0.22 -1.37 -1.40
Tilt/mm m-1 A-1 0.69 0.69 0.72 0.03 0.00

  • First corrector, horizontal (+/-3 A, 11 steps): ctf3cbpmAllCorr_20130513_212937.dat, ctf3cbpmAllCorr_20130513_213256.dat
  • Second corrector, horizontal (+/-9 A, 10 steps): ctf3cbpmAllCorr_20130513_213656.dat, ctf3cbpmAllCorr_20130513_213955.dat
  • Two correctors, horizontal (+/- 3 A, 11 steps): ctf3cbpmAllCorr_20130513_214543.dat, ctf3cbpmAllCorr_20130513_214907.dat

Corrector 0 Corrector 0 (BPM0710) Corrector 1 Combined Simultaneous
Position/mm A-1 -1.62 -0.48 -0.22 1.41 1.40
Tilt/mm m-1 A-1 -0.71 -0.68 -0.73 -0.02 0.00

Drive Beam Data (TBTS)

  • Tune file (no drive beam): ctf3cbpm_20130517_131959.dat

Filename Pulses Comments
ctf3cbpm_20130517_151742.dat 50 max drive beam power
ctf3cbpm_20130517_151829.dat 50 max drive beam power
ctf3cbpm_20130517_153923.dat 50 maybe drive beam power change
ctf3cbpm_20130517_154154.dat 50 maybe drive beam power change
ctf3cbpm_20130517_164052.dat 100 back in office
ctf3cbpm_20130517_164550.dat 100 None
ctf3cbpm_20130517_165052.dat 100 None
ctf3cbpm_20130517_165411.dat 100 power increased at 1645
ctf3cbpm_20130517_170814.dat 100 None
ctf3cbpm_20130517_171923.dat 100 drive beam just came back
ctf3cbpm_20130517_172105.dat 100 drive beam just came back

dbwfx_delpower.png dbwfy_delpower.png

dbwfr_delpower.png

-- FrankieCullinan - 13 May 2013

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Topic revision: r13 - 12 Jul 2013 - FrankieCullinan

 
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