Difference between revisions of "SRC/CT Detector Calibration"
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**[https://docs.google.com/spreadsheets/d/1xLmNGh-CiAD_ETUqL8kRnG2ZTuaKGLvymY2JdJ47w0Y/edit#gid=1665922131 Ver 06 to 07] | **[https://docs.google.com/spreadsheets/d/1xLmNGh-CiAD_ETUqL8kRnG2ZTuaKGLvymY2JdJ47w0Y/edit#gid=1665922131 Ver 06 to 07] | ||
*Location of output files: | *Location of output files: | ||
− | **Monitoring histograms, REST files, standalone files specific to some sub-detectors (one per | + | **Monitoring histograms, REST files, standalone files specific to some sub-detectors (one per evil file): /mss/halld/offline_monitoring/RunPeriod-2021-11/verXX |
**Merged histogram files (one per run): /work/halld/data_monitoring/RunPeriod-2021-11/mon_verXX/rootfiles/ | **Merged histogram files (one per run): /work/halld/data_monitoring/RunPeriod-2021-11/mon_verXX/rootfiles/ | ||
**Plot browser: https://halldweb.jlab.org/data_monitoring/Plot_Browser.html | **Plot browser: https://halldweb.jlab.org/data_monitoring/Plot_Browser.html |
Revision as of 12:31, 21 September 2022
Overview of subdetectors
Detector | Tasks | Calibration expert |
---|---|---|
CDC | gains, dE/dx, time-to-distance | Simon Taylor |
FDC | timing, wire plane, pedestals, gain/energy non-linearities | Keigo Mizutani |
BCAL | timing, z-position, gain ratios, gains, non-linearities | Mark Dalton, Karthik Suresh |
FCAL | gains/non-linearities/timing | Igal Jaegle |
TOF | timing offsets, timewalk, attenuation, gain | Beni Zihlmann |
ST | timing, resolution | Sean Dobbs |
TAGH | timing offsets, timewalk | Alex Somov |
TAGM | timing offsets, timewalk | Alex Somov |
PS | timing offsets, timewalk | Alex Somov |
Monitoring launches
Version | Date | Files per run | Compared with last version |
---|---|---|---|
00 | during each run | a few percent of all data | created online by RootSpy |
01 | shortly after each run | 5 | first launch |
02 | 01/07/2022 | 40 | various calibration updates |
03 | 02/14/2022 | 5 | various calibration updates |
04 | 03/14/2022 | 5 | various calibration updates |
05 | 04/22/2022 | 40 (90271-90378), 5 (rest) | various calibration updates |
06 | 07/03/2022 | 2 | BCAL calibrations added, photon beam endpoint energy added |
07 | 07/27/2022 | 2 | Photon beam endpoint energy corrected, TAGH calibrations of Compton runs added |
- Calibration check spreadsheets:
- Location of output files:
- Monitoring histograms, REST files, standalone files specific to some sub-detectors (one per evil file): /mss/halld/offline_monitoring/RunPeriod-2021-11/verXX
- Merged histogram files (one per run): /work/halld/data_monitoring/RunPeriod-2021-11/mon_verXX/rootfiles/
- Plot browser: https://halldweb.jlab.org/data_monitoring/Plot_Browser.html
Data quality issues
- Some hardware or software issues can not be fixed by calibrations. Attention is needed during the data analysis
Subdetector | Issue | Runs affected | Actions needed |
---|---|---|---|
CDC | dE/dx of proton is smaller than normal | 90469-90475 | TBD |
FDC | some strips in plane 5, 12 and 16 are down | all runs | TBD |
BCAL | module 12-16 is down | 90512-90513 | TBD |
TAGH | channel 1-16 has two peaks in TDC-ADC plots | all runs | TBD |
TAGH | channel 104 has two peaks in TDC-ADC plots | 90117-90453 | TBD |
TAGH | channel 179-185 behaves abnormal due to bad FADC | 90428-90453 | TBD |
TAGH | one channel has abnormal pedestal | 90177-90427 | TBD |
TAGH | one FADC is bad | 90001-90079 | TBD |
TAGM | channel 100 has very low occupancy | all runs | TBD |
TPOL | not included | 90001-90058 | TBD |