Difference between revisions of "BPM calibration information"
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| − | ! Date !! Method !! AXoff !! BXoff !! CXoff !! AYoff !! BYoff !! CYoff !! AXslope !! BXslope !! CXslope !! AYslope !! BYslope !! CYslope | + | ! Date !! Method !! AXoff !! BXoff !! CXoff !! AYoff !! BYoff !! CYoff !! AXslope !! BXslope !! CXslope !! AYslope !! BYslope !! CYslope !! Notes |
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| − | ! 1/13/2018 !! Calibration !! -0.06 !! 0.07 !! -1.06 !! -0.46 !! 0.12 !! 0.61 !! -0.98 !! -1.12 !! -0.96 !! 0.97 !! 1.17 !! 0.87 | + | ! 1/13/2018 !! Calibration !! -0.06 !! 0.07 !! -1.06 !! -0.46 !! 0.12 !! 0.61 !! -0.98 !! -1.12 !! -0.96 !! 0.97 !! 1.17 !! 0.87 !! 1st calibration |
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| − | ! 8/29/2018 !! Harp scan !! 0.15 !! 0.29 !! -1.08 !! -0.12 !! 0.63 !! 1.09 !! - !! - !! - !! - !! - !! - | + | ! 8/29/2018 !! Harp scan !! 0.15 !! 0.29 !! -1.08 !! -0.12 !! 0.63 !! 1.09 !! - !! - !! - !! - !! - !! - !! - |
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| − | ! 2/9/2019 !! Harp scan !! 0.25 !! 0.46 !! -1.01 !! -0.08 !! -0.04 !! -0.11 !! - !! - !! - !! - !! - !! - | + | ! 2/9/2019 !! Harp scan !! 0.25 !! 0.46 !! -1.01 !! -0.08 !! -0.04 !! -0.11 !! - !! - !! - !! - !! - !! - !! Radiator installed during January 2019 SAD |
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| − | ! 6/23/2019 !! Calibration !! 0.11 !! 0.17 !! -1.07 !! -0.40 !! -0.18 !! -0.40 !! -0.97 !! -1.11 !! -0.95 !! 0.95 !! 1.15 !! 0.85 | + | ! 6/23/2019 !! Calibration !! 0.11 !! 0.17 !! -1.07 !! -0.40 !! -0.18 !! -0.40 !! -0.97 !! -1.11 !! -0.95 !! 0.95 !! 1.15 !! 0.85 !! - |
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| − | ! 12/8/2019 !! Calibration !! 0.14 !! 0.22 !! -1.13 !! -0.06 !! -0.29 !! -0.78 !! -0.96 !! -1.09 !! -0.96 !! 0.95 !! 1.16 !! 0.85 | + | ! 12/8/2019 !! Calibration !! 0.14 !! 0.22 !! -1.13 !! -0.06 !! -0.29 !! -0.78 !! -0.96 !! -1.09 !! -0.96 !! 0.95 !! 1.16 !! 0.85 !! Polarized 3He expt |
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Revision as of 14:27, 5 May 2023
- The beam position monitors (BPMs) on the diagnostic girder in Hall C (IPM3H07A, IPM3H07B, and IPM3H07C) are calibrated by comparison with the Hall C superharps (IHA3H07A and IHA3H07B). Ideally, a "bulls-eye" scan is doe which allows one to determine the BPMS offsets and slopes. However, a single harp scan is sufficient to check the BPM offsets.
| Date | Method | AXoff | BXoff | CXoff | AYoff | BYoff | CYoff | AXslope | BXslope | CXslope | AYslope | BYslope | CYslope | Notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/13/2018 | Calibration | -0.06 | 0.07 | -1.06 | -0.46 | 0.12 | 0.61 | -0.98 | -1.12 | -0.96 | 0.97 | 1.17 | 0.87 | 1st calibration |
| 8/29/2018 | Harp scan | 0.15 | 0.29 | -1.08 | -0.12 | 0.63 | 1.09 | - | - | - | - | - | - | - |
| 2/9/2019 | Harp scan | 0.25 | 0.46 | -1.01 | -0.08 | -0.04 | -0.11 | - | - | - | - | - | - | Radiator installed during January 2019 SAD |
| 6/23/2019 | Calibration | 0.11 | 0.17 | -1.07 | -0.40 | -0.18 | -0.40 | -0.97 | -1.11 | -0.95 | 0.95 | 1.15 | 0.85 | - |
| 12/8/2019 | Calibration | 0.14 | 0.22 | -1.13 | -0.06 | -0.29 | -0.78 | -0.96 | -1.09 | -0.96 | 0.95 | 1.16 | 0.85 | Polarized 3He expt |
