Difference between revisions of "G2p BCM calibration"
From Hall A Wiki
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==Tungsten calorimeter== | ==Tungsten calorimeter== | ||
===Introduction=== | ===Introduction=== | ||
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===Analysis and scripts=== | ===Analysis and scripts=== | ||
| − | + | you can find the script in: | |
/adaqfs/home/adaq/pzhu/bcm/tungsten | /adaqfs/home/adaq/pzhu/bcm/tungsten | ||
===Tungsten Calorimeter Calibration Results === | ===Tungsten Calorimeter Calibration Results === | ||
| + | calibration constant can find in: [http://hallaweb.jlab.org/experiment/g2p/collaborators/pzhu/wiki/pyDB/bcm%20calibration.ods here] | ||
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| + | Note: SIS3801 have different constant with SIS3800 | ||
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| + | ~3.17 3rm downstream scaler abnormal | ||
| + | 3.18~4.2 LHRS upstream scaler noisy | ||
| + | 4.2~4.9 RHRS SIS3801 scaler not working | ||
| + | 4.9 changed RHRS scaler channel for bcm | ||
| + | 4.19~ calibration constant changed | ||
| + | Near 5.12 3rm sis3801 not working? | ||
| + | 5.13~5.14 downstream broken | ||
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| + | in constant area: | ||
| + | blue available slope | ||
| + | green available pedestal | ||
| + | black not available | ||
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| + | "in avail run area: | ||
| + | black means not available | ||
| + | same color in neighbour cell means same calibration constant" | ||
| − | happex | + | how to use calibration constant to calulate charge: |
| − | + | happex C=slope*875us*(ΔA-ped*ΔEntry)) | |
| − | scaler C=slope*(ΔA-ped*ΔEntry) | + | scaler SIS3800 & SIS3801 C=slope*(ΔA-ped*ΔEntry) |
| − | calibration constant | + | how to use calibration constant to calulate current: |
| + | happex: I=slope*(rate-ped)*875/1041.65 | ||
| + | sis3800: I=slope*(rate-ped*clockrate) | ||
| + | sis3801: I=slope*(rate-ped*103.7k*971.65us)/1041.65us | ||
==New Hall A 2 channel BCM receiver 1H00== | ==New Hall A 2 channel BCM receiver 1H00== | ||
Latest revision as of 04:37, 19 November 2012
Contents
Tungsten calorimeter
Introduction
Analysis and scripts
you can find the script in: /adaqfs/home/adaq/pzhu/bcm/tungsten
Tungsten Calorimeter Calibration Results
calibration constant can find in: here
Note: SIS3801 have different constant with SIS3800
~3.17 3rm downstream scaler abnormal 3.18~4.2 LHRS upstream scaler noisy 4.2~4.9 RHRS SIS3801 scaler not working 4.9 changed RHRS scaler channel for bcm 4.19~ calibration constant changed Near 5.12 3rm sis3801 not working? 5.13~5.14 downstream broken
in constant area: blue available slope green available pedestal black not available
"in avail run area: black means not available same color in neighbour cell means same calibration constant"
how to use calibration constant to calulate charge:
happex C=slope*875us*(ΔA-ped*ΔEntry)) scaler SIS3800 & SIS3801 C=slope*(ΔA-ped*ΔEntry)
how to use calibration constant to calulate current:
happex: I=slope*(rate-ped)*875/1041.65 sis3800: I=slope*(rate-ped*clockrate) sis3801: I=slope*(rate-ped*103.7k*971.65us)/1041.65us
