Back to the analysis page
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 evio 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
|