Difference between revisions of "Monitoring/Analysis Instructions During A Shift"
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NOTE 1: In the comment box at the star of run, please write the target type, HMS/SHMS Angle and momentum settings. | NOTE 1: In the comment box at the star of run, please write the target type, HMS/SHMS Angle and momentum settings. | ||
| − | NOTE 2: | + | NOTE 2: If you are not already in the hallc_replay directory online, login to cdaql1 machine and go to hallc_replay directory: |
| + | > ssh cdaql1 | ||
| + | > go_analysis | ||
| + | |||
| + | |||
2. In the middle of the run, once enough statistics have been accumulated, execute the 50k event replay scripts for each spectrometer | 2. In the middle of the run, once enough statistics have been accumulated, execute the 50k event replay scripts for each spectrometer | ||
to monitor the detectors. In case you are not already in the online analysis directory, from a cdaq machine, do the following: | to monitor the detectors. In case you are not already in the online analysis directory, from a cdaq machine, do the following: | ||
Revision as of 18:30, 30 March 2018
Instructions for D(e,e'p)n Experiment (E12-10-003)
Useful Links
Setting the Momentum in the HMS/SHMS Magnets
H(e,e'p) Check and Aluminum Dummy Instructions
Overview:
The plan is to take SHMS singles with Hydrogen and Aluminum targets. Please set the HMS/SHMS angle and momentum settings accordingly. See Kinematics Sheet.
Once the angles/momentum for each spectrometer are set and the target is in place, set pS1=0 (SHMS 3/4 TRG), and ps2-ps6=-1 in the DAQ Gui. Keep an eye on the rates, and make sure NOT to exceed 2500 Hz, so we can keep the computer live time > 90%. In case the singles rates exceed this limit, set the value on the 'target rate' box to 2500 and hit Enter to automatically set the pre-scale rate accordingly.
Pre-Analysis
1. Start a Run. We will be taking roughly 1-hour long runs, for which you'll need to keep an eye on the time.
NOTE 1: In the comment box at the star of run, please write the target type, HMS/SHMS Angle and momentum settings.
NOTE 2: If you are not already in the hallc_replay directory online, login to cdaql1 machine and go to hallc_replay directory: > ssh cdaql1 > go_analysis
2. In the middle of the run, once enough statistics have been accumulated, execute the 50k event replay scripts for each spectrometer
to monitor the detectors. In case you are not already in the online analysis directory, from a cdaq machine, do the following:
Login to cdaql1 machine and go to hallc_replay directory: > ssh cdaql1 > go_analysis
for SHMS detector check: ./run_coin_shms.sh <run_number>
for HMS detector check: ./run_coin_hms.sh <run_number>
3. At the end of each run,
a. Login to cdaql1 machine
b. Update the file " standard.Kinematics " : usually opened in HIGH VOLTAGE Monitor (HCDESK 2 ) path : /net/cdaqfs/home/cdaq/hallc-online/hallc_replay/DBASE/COIN/STD/standard.kinematics
c. Analyze the run with :
