BPM Calibration

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How to perform a bulls eye scan:

1. You need unrastered beam:

    - This must be competed in phase 1! 
    - use single foil target.
    - set PS8=100, run both arms


2. Ask MCC to steer the beam to the nominal center of the target.

3. Wait until beam is stable and have MCC perform a harp scan for the two superharps near the target (1H04A and 1H04B) and take a CODA run for both the left and right spectrometers during the same time. Start the coda run first before asking MCC. Request MCC to make an ELOG entry with the Harp results, you should see all three harp wires. Record ELOG entry numbers and timestamps of both harpscans.

4. Ask MCC then to steer the beam to positions around the nominal center:

    - cover at least the area the raster will cover: (2,2), (2,-2), (-2,-2), (-2,2), (3,3), (-3,-3), and repeat (0,0)
    - repeat harp and CODA runs for each position

5. Record Harp scan run numbers and corresponding CODA run number for each beam position. As an example, see HALOG # 3324009.

6. Make a record of the harp scans and CODA runs in the HALOG.

How to analyze the bulls eye scan:

 - detailed instructions can be found at the Analyzing BPMs website.
 - the shift crew is not expected to analyze the bulls eye scan.


BPM pedestal run (20 minutes)

1. Ask MCC to set iocse10 to Forced gain = 0.

2. Take CODA run for both Right and Left arms.

  • Use only clock triggers. T8=100
  • Need about 100k events.

3. Ask MCC to set iocse10 to auto gain.

  can be located at /cs/opshome/edm/bpm/diag_see/IPM_E_GainCntrl.edl

Calibration

Pedestal run: Left arm: Run: 757 and 758 ( longer one) Right: Run: 90557 and 90558 (longer one)

BPM Calibrations (Bullseye Scan) [1-2 hours]

This calibration was done in the owl shift of 12/14.2017 using both arms DAQ, however the Right arm dipole wasn't enabled. Set Beam energy (MeV) : 6418.49 Current ~6.7 uA

Bulls eye scan for 12/14/2017

Relative position LHRS CODA run RHRS CODA run Harp scan entry no. HarpA time stamp HarpB time stamp
(1.15,2.25) 805 90595 3504092 12142017_01:55:06 12142017_01:58:24
(2.15,3.25) 806 90596 3504121 12142017_02:38:06 12142017_02:39:57
(0.15,3.25) 807 90597 3504130 12142017_02:49:00 12142017_02:52:45
(0.15,1.25) 808 90598 3504140 12142017_02:57:48 12142017_02:59:33
(2.15,1.25) 809 90599 3504146 12142017_03:04:43 12142017_03:08:13
(1.15,2.25) 810 90600 3504151 12142017_03:17:15 12142017_03:19:01

Bulls eye scan for 01/13/2018

Pedestals runs 1160 90721

(0,0) = BPM A (1.5,0.5) BPM B (1.5,1.5)

Relative position LHRS CODA run RHRS CODA run Harp scan entry no. HarpA time stamp HarpB time stamp
(0,0) 1132 90708 3512093 01132018_05:43:19 01132018_05:49:10
(0,1) 1133 90709 3512105 01132018_06:05:20 01132018_06:09:03
(-2,1) 1134 90710 3512114 01132018_06:14:09 01132018_06:17:09
(-2,-1) 1135 90711 3512121 01132018_06:27:38 01132018_06:33:47
(0,-1) 1136 90712 3512127 01132018_06:40:32 01132018_06:42:29
(0,0) 1137/1138 90713/90714 3512133 01132018_06:52:50 01132018_06:54:52
(-1,0) 1139 90715 3512139 01132018_07:07:22 01132018_07:10:59

Bulls eye scan for 01/13/2018 Day shift/swing

Relative position LHRS CODA run RHRS CODA run Harp scan entry no. HarpA time stamp HarpB time stamp
#1 A(1.6 ,0.5) B(3.3, 0.2) 1163 90727 3512548 01132018_15:51:08 01132018_15:53:29
#2 A(3.1,2.0) B(4.8,1.7) 1165 90729 No log book] 01132018_16:41:46 01132018_16:39:06
#3 A(3.1,-1.0) B(4.8,-1.3) 3504140
#4 A(0.1,-1.0) B(1.8 , -1.3) 3504146
#5 A(0.1,2.0) B(1.8,1.7) 3504121
#6 A(1.6 ,0.5) B(3.3, 0.2) 3504151

Bulls eye scan for 05/02/2018 Day shift/swing

BPM pedestal run Left : 9039 Right:93039

Relative position LHRS CODA run RHRS CODA run Harp scan entry no. HarpA time stamp HarpB time stamp
#1 A(1.3,0.75) B(2.9,0.25) 3033 93033 3571645 05032015_21:44:49 05032018_21:48:03
#2 A(0.6,-0.75) B(2.2,-1.25) 3034 93034 3571665 05032015_22:24:58 05032015_22:17:50
#3 A(2.1,-0.75) B(3.7,-1.25) 3035 93035 3571674 05032015_22:29:26 05032015_22:31:29
#4 A(2.1,-0.75) B(3.7,0.75) 3036 93036 3571674 3571688 05032015_22:44:03 05032015_22:37:58
#5 A(0.6,1.25) B(2.2,0.75) 3038 93038 3571703 3571703 05032015_22:54:11 05032015_22:57:05
#6 A(1.3,0.75) B(2.9,0.25)


Bulls eye scan for 10/30/2018 Day shift/swing

  • BPM pedestal run Left and Right (coincidence mode) : 1111XX (not yet done)
  • MCC Units centering position : 1.4x1.8
  • Prescales : ps1=2=3=4=5=6=7 == 0, ps8 == 100
Relative position LHRS CODA run RHRS CODA run Harp scan A entry no. Harp scan B entry no. HarpA time stamp HarpB time stamp
#1 A(1.4, 1.8) B(1.4, 1.8) 111122 111122 3618106 3618109 10302018_21:25:51 10302018_21:27:51
#2 A(2.4, 2.8) B(2.4, 2.8) 111123, redo 111128 111123, redo 111128 3618111 (bad?), redo 3618147 3618112, redo 3618148 (BAD) 10302018_21:31:45, redo 10302018_22:29:19 10302018_21:34:32, redo 10302018_22:31:57(bad)
#3 A(2.4, 1.3) B(2.4, 1.3) 111124, redo 111129 111124, redo 111129 3618121, redo 3618153 3618118, redo 3618158 10302018_21:47:52, redo 10302018_22:41:01 10302018_21:45:09, redo 10302018_22:43:59
#4 A(0.4, 1.3) B(-0.4, 1.3) 111125 111125 3618127 3618130 10302018_22:00:58 10302018_22:05:12
#5 A(0.4,2.8) B(0.4,2.8) 111126 111126 3618134 3618135 10302018_22:11:33 10302018_22:14:13
#6 A(1.4,1.8) B(1.4,1.8) 111127 111127 3618140 3618143 10302018_22:21:33 10302018_22:24:09

Results for this calibration slides


A Calibration was completed on Dec 14th.

The slides showing the results from this calibration can be seen here