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