RHUL Physics Department TWiki> PP/JAI Web>BeamPosition>ClicBpm>ClicLogBook>ClicLogBook20130410 (03 May 2013, FrankieCullinan)
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Single Bunch Corrector Scans

  • Attenuation stuck on 6 dB in horizontal and 0 dB in vertical and reference
  • Single corrector scans in vertical
  • Energy at 190 MeV, drive-beam sometimes present in TBL
  • Tune file: ctf3cbpm_20130410_142912.dat
  • Process file ddc_130410_141405.dat

Filename Pulses
ctf3cbpmCorr_20130410_143307.dat 140
ctf3cbpmCorr_20130410_143527.dat 140
ctf3cbpmCorr_20130410_143726.dat 140
ctf3cbpmCorr_20130410_143916.dat 140
ctf3cbpmCorr_20130410_144101.dat 140
ctf3cbpmCorr_20130410_144301.dat 140

  • Double corrector scan, 0.4 to 1.0 A range

Filename Pulses Scale Factor Error χ2/d.o.f. IQ rotation Error χ2/d.o.f.
ctf3cbpmCorr_20130410_145016.dat 140 1.48 0.04 5.09 31.0 0.9 0.18
ctf3cbpmCorr_20130410_145158.dat 140 0.92 0.01 15.09 31.4 0.5 0.73
ctf3cbpmCorr_20130410_145455.dat 140 1.00 0.02 20.11 32.2 0.6 0.06
ctf3cbpmCorr_20130410_145632.dat 140 1.03 0.02 29.88 32.0 0.6 0.67
ctf3cbpmCorr_20130410_145837.dat 140 1.64 0.06 19.60 31.5 0.9 0.16
ctf3cbpmCorr_20130410_150107.dat 140 1.63 0.06 1.30 24.5 0.7 0.74

corrscan_20130410_145016.png ycal_20130410_145016.png

  • Single horizontal corrector scan

Filename Pulses
ctf3cbpmCorr_20130410_151014.dat 100
ctf3cbpmCorr_20130410_151133.dat 100
ctf3cbpmCorr_20130410_151313.dat 100
ctf3cbpmCorr_20130410_151532.dat 140
ctf3cbpmCorr_20130410_151721.dat 140

  • Double corrector scan, horizontal: -4.3 to -3.9 A range

Filename Pulses
ctf3cbpmCorr_20130410_152311.dat 100
ctf3cbpmCorr_20130410_152434.dat 100

  • -3.9 to -3.5 A range

Filename Pulses
ctf3cbpmCorr_20130410_154036.dat 100
ctf3cbpmCorr_20130410_154300.dat 100
ctf3cbpmCorr_20130410_154449.dat 100
ctf3cbpmCorr_20130410_154615.dat 100

Single Bunch Charge Scan

Picomotor position Filename
4600 ctf3cbpmAll_20130410_154827.dat
4550 ctf3cbpmAll_20130410_154858.dat
4500 ctf3cbpmAll_20130410_155032.dat
4450 ctf3cbpmAll_20130410_155055.dat
4400 ctf3cbpmAll_20130410_155156.dat
4350 ctf3cbpmAll_20130410_155218.dat
4300 ctf3cbpmAll_20130410_155243.dat
4250 ctf3cbpmAll_20130410_155319.dat
4200 ctf3cbpmAll_20130410_155348.dat
4150 ctf3cbpmAll_20130410_155412.dat
4100 ctf3cbpmAll_20130410_155437.dat
4050 ctf3cbpmAll_20130410_155502.dat
4000 ctf3cbpmAll_20130410_155521.dat
3950 ctf3cbpmAll_20130410_155543.dat
3900 ctf3cbpmAll_20130410_155601.dat
3850 ctf3cbpmAll_20130410_155626.dat
3800 ctf3cbpmAll_20130410_155648.dat
3750 ctf3cbpmAll_20130410_155710.dat
3700 ctf3cbpmAll_20130410_155739.dat
3650 ctf3cbpmAll_20130410_155801.dat
3600 ctf3cbpmAll_20130410_155824.dat
3550 ctf3cbpmAll_20130410_155903.dat
3500 ctf3cbpmAll_20130410_155926.dat
3450 ctf3cbpmAll_20130410_155949.dat
3400 ctf3cbpmAll_20130410_160024.dat
3350 ctf3cbpmAll_20130410_160050.dat
3300 ctf3cbpmAll_20130410_160126.dat
3250 ctf3cbpmAll_20130410_160150.dat
3200 ctf3cbpmAll_20130410_160211.dat
3150 ctf3cbpmAll_20130410_160231.dat
3100 ctf3cbpmAll_20130410_160255.dat
3050 ctf3cbpmAll_20130410_160319.dat
3000 ctf3cbpmAll_20130410_160341.dat
2950 ctf3cbpmAll_20130410_160449.dat
2900 ctf3cbpmAll_20130410_160508.dat
2850 ctf3cbpmAll_20130410_160529.dat
2800 ctf3cbpmAll_20130410_160548.dat
2750 ctf3cbpmAll_20130410_160609.dat
2700 ctf3cbpmAll_20130410_160631.dat
2650 ctf3cbpmAll_20130410_160844.dat
2600 ctf3cbpmAll_20130410_160912.dat
2550 ctf3cbpmAll_20130410_160933.dat
2500 ctf3cbpmAll_20130410_160951.dat
2450 ctf3cbpmAll_20130410_161011.dat
2400 ctf3cbpmAll_20130410_161031.dat
2350 ctf3cbpmAll_20130410_161054.dat
2300 ctf3cbpmAll_20130410_161138.dat
2250 ctf3cbpmAll_20130410_161207.dat
2200 ctf3cbpmAll_20130410_161233.dat
2150 ctf3cbpmAll_20130410_161306.dat
2100 ctf3cbpmAll_20130410_161324.dat
2050 ctf3cbpmAll_20130410_161343.dat
2000 ctf3cbpmAll_20130410_161405.dat
1950 ctf3cbpmAll_20130410_161427.dat
1900 ctf3cbpmAll_20130410_161447.dat
1850 ctf3cbpmAll_20130410_161508.dat
1800 ctf3cbpmAll_20130410_161526.dat
1750 ctf3cbpmAll_20130410_161553.dat
1700 ctf3cbpmAll_20130410_161611.dat
1650 ctf3cbpmAll_20130410_161630.dat
1600 ctf3cbpmAll_20130410_161648.dat
1550 ctf3cbpmAll_20130410_161708.dat
1500 ctf3cbpmAll_20130410_161729.dat
1450 ctf3cbpmAll_20130410_161754.dat
1400 ctf3cbpmAll_20130410_161817.dat
1350 ctf3cbpmAll_20130410_161836.dat
1300 ctf3cbpmAll_20130410_161856.dat
1250 ctf3cbpmAll_20130410_161919.dat
1200 ctf3cbpmAll_20130410_161938.dat
1150 ctf3cbpmAll_20130410_162000.dat
1100 ctf3cbpmAll_20130410_162017.dat
1100 ctf3cbpmAll_20130410_162217.dat
1050 ctf3cbpmAll_20130410_162247.dat
1150 ctf3cbpmAll_20130410_162321.dat

  • One file (ctf3cbpmAll_20130410_174212.dat) taken with particularly bad noise from the drive beam which should've been in TBL. It remains to be seen whether it is dark current. We should check when we are sure that the spectrometer magnet is switched on. Signal also seen in the inductive BPMs below. Similarly, must perform a measurement when we are sure the magnet is switched on.
  • File with drive beam and no possible beam in the cavity: ctf3cbpm_20130429_120719.dat (from ClicLogBook20130410)
  • Multibunch data from ClicLogBook20130422

drivebeam_20130410.png dbfft_20130410.png

Channel Pollution frequency/MHz Short pulse frequency/MHz Multibunch frequency/MHz Absolutely no beam pollution/MHz
x 183.1±0.2 214.5±0.5 183.8±0.2 183.1±0.8
y 184.0±0.2 209.8±0.7 183.6±0.2 -
reference 184.7±0.2 200.9±1.1 183.6±0.2 -

Corrector Scans with Inductive BPMs

  • Single corrector, horizontal: -2 to +10 A

Filename Pulses Calibration/mmA-1 χ2/d.o.f.
ctf3cbpmAllCorr_20130410_182651.dat 260 -0.294±0.005 0.75
ctf3cbpmAllCorr_20130410_183623.dat 260 -0.288±0.004 1.07

  • Double corrector, horizontal: -4 to +4 A

Filename Pulses
ctf3cbpmAllCorr_20130410_185346.dat 180
ctf3cbpmAllCorr_20130410_185721.dat 180

xcorrcal_100413_0.png xcorrcal_100413_0a.png

xcorrcal_100413.png xcorrcal_100413_a.png

  • Single corrector, vertical: -6 to +6 A

Filename Pulses Calibration/mmA-1 χ2/d.o.f.
ctf3cbpmAllCorr_20130410_191128.dat 260 0.233±0.005 1.11
ctf3cbpmAllCorr_20130410_191529.dat 260 0.250±0.004 3.40

  • Double corrector, vertical: -5 to +5 A

Filename Pulses
ctf3cbpmAllCorr_20130410_192110.dat 220
ctf3cbpmAllCorr_20130410_192540.dat 220

ycorrcalsingle_100413_0.png ycorrcalsingle_100413_0a.png

ycorrcal_100413.png ycorrcal_100413_a.png

-- FrankieCullinan - 10 Apr 2013

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Topic revision: r10 - 03 May 2013 - FrankieCullinan

 
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