Difference between revisions of "G2p BCM calibration"
From Hall A Wiki
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===Tungsten Calorimeter Calibration Results === | ===Tungsten Calorimeter Calibration Results === | ||
| − | calibration constant can find in: [http://hallaweb.jlab.org/experiment/g2p/collaborators/pzhu/wiki/bcm%20calibration.ods here] | + | calibration constant can find in: [http://hallaweb.jlab.org/experiment/g2p/collaborators/pzhu/wiki/pyDB/bcm%20calibration.ods here] |
Note: SIS3801 have different constant with SIS3800 | Note: SIS3801 have different constant with SIS3800 | ||
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
