Difference between revisions of "Monitoring/Analysis Instructions During A Shift"

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=Pre-Analysis=
 
=Pre-Analysis=
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1. 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.
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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.   
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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,
 
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set the value on the 'target rate' box to 2500 and hit Enter  to automatically set the pre-scale rate accordingly.
 
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2. Start a Run. We will be taking roughly 1-hour long runs, for which you'll need to keep an eye on the time.   
 
  
 
3. In the middle of the run,  once enough statistics have been accumulated, execute the 50k event replay scripts for each spectrometer
 
3. In the middle of the run,  once enough statistics have been accumulated, execute the 50k event replay scripts for each spectrometer

Revision as of 18:15, 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.

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.

3. 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 cedar 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. After full run, check the Good events and Update the file on Google docs 

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 :
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