Difference between revisions of "Shift How-To"

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(Created page with "= Overview = == Shift Roles == == Reporting and Logging == = Taking Data = == Starting the DAQ == == Monitoring the Data == = Recovery Procedures = = Systems = == Bea...")
 
 
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<big><span style="color:red"> '''''THIS IS THE OLD/DEPRECATED SBS SHIFT HOW-to PAGE!!!''''' </span></big>
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''' To access the new wiki page, follow this [https://sbs.jlab.org/wiki/index.php/HOW_TOs link to the new how-to page]'''
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= Overview =
 
= Overview =
 +
 +
This page gives instructions for various aspects of the experiment relating to each of the major subsystems and shift tasks. 
  
 
== Shift Roles ==
 
== Shift Roles ==
 +
 +
* '''Shift Leader:''' Executes the Run Plan according to the Run Coordinator's instructions
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* '''Target Operator:''' Monitors the target system 
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* '''Data Quality Monitor:''' Starts and stops CODA DAQ runs and monitors the quality of the data that is being recorded
  
 
== Reporting and Logging ==
 
== Reporting and Logging ==
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All shift takers should regularly log shift details in HALOG - the Hall A electronic logbook.
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* [http://logbooks.jlab.org/book/halla Link to HALOG]
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* [[Creating HALOG entries]]
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Shift leaders should fill out Beam Time Accounting (BTA) information during the shift.
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* [[BTA steps]]
  
 
= Taking Data =
 
= Taking Data =
  
−
== Starting the DAQ ==
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* Using the CODA DAQ
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** GUI Description
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** Starting a Run
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** Stopping a Run
  
−
== Monitoring the Data ==  
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* Monitoring the data
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* Online analysis
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* Shift checklist
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== Analyzing the Data ==
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This section contains instructions for running the replay script with all detectors on a-onl@aonlX.
 +
 
 +
=== Instruction for shift crew ===
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* Login to a-onl@aonlX (X=1, 2, 3, 4)
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* once logged in, type ''gosbs'' => this takes you to the directory where the analysis should be done, and sets up the correct environment variables.
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* type ''./run_gmn_50k.sh runnum'' with
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** ''runnum'' (integer) the run number you want to analyze;
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* This analyses the first 50000 events and produces plots that need to be checked.
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* Please review all produced plots of each GUI, and click on "Exit GUI", this will pop the next GUI.
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* After you're reviewed all plots, they will be saved as PDFs.
 +
 
 +
* '''Instructions for full replay to be updated''' After a run is completed, you may run ''./run_gmn_all runnum firstseg nseg'' with:
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** ''runnum'' having the same definition as above;
 +
** ''firstseg'' being the first segment to analyze;
 +
** ''nseg'' the number of segments to analyze.
 +
 
 +
=== Specific instructions for experts ===
 +
'''''Note''': these instructions are likely to evolve in a very near future''
 +
* Login to a-onl@aonlX (X=1, 2, 3, 4)
 +
* once logged in, type ''gosbs'' => this takes you to the directory where the analysis should be done, and sets up the correct environment variables.
 +
* open the analyzer by typing ''analyzer''
 +
* once in the analyzer type ''.L replay_gmn.C+''
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* type ''replay_gmn(runnum, nevents, firstevent, file_prefix, firstsplit, nsplits, pedestalmode)'' with:
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** ''runnum'' (integer) the run number you want to analyze;
 +
** ''nevents'' (long integer) the number of events you want to analyze.
 +
** ''firstevent'' (long integer) the event number from which you want to start the analysis;
 +
** ''file_prefix'' (char*)the prefix of the file you want to analyze;
 +
** ''firstsplit'' (integer) the split/segment number at which you want to start the analysis;
 +
** ''nsplits'' (integer) the number of splits/segments you want to analyze
 +
** ''pedestalmode'' (integer) turn pedestal mode on or off for the GEMs
  
 
= Recovery Procedures =
 
= Recovery Procedures =
  
 
= Systems =
 
= Systems =
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== High Voltage ==
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* [[SBS EPICS]]
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== Alarms ==
  
 
== Beam Line ==
 
== Beam Line ==
  
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* [[Monitoring the Beam Line]]
 
* [https://hallaweb.jlab.org/wiki/images/c/ce/HallA_beamline_drawing.pdf Hall A beam line drawing (to be updated)]
 
* [https://hallaweb.jlab.org/wiki/images/c/ce/HallA_beamline_drawing.pdf Hall A beam line drawing (to be updated)]
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* Checkout procedure  
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* [[SBS checkout procedure]]
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* spot++ (beam size verification)
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* [[SBS spot++ (beam size verification)]]
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* BPM calibration  
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* [[SBS BPM calibration]]
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* HARP scan
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* [[SBS HARP scan]]
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* Polarization Measurements  
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* SBS Polarization Measurements  
 
** Compton: Not Used  
 
** Compton: Not Used  
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** Moller  
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** [[SBS Moller]]
  
 
== Target ==
 
== Target ==
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* [[Operational Tasks]]
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* [[Critical Items to Watch]]
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* [[How to Establish Beam on Target]]
  
 
== Magnets ==
 
== Magnets ==
  
−
* BigBite
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* [[BigBite for GMn]]
−
* Super BigBite  
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* [[Super BigBite for GMn]]
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* LHRS  
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* [[Corrector Magnets]]
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* [[LHRS for GMn]]
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== EDTM ==
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*[[How to Set EDTM Frequency with the DVCS Pulser]]
  
 
== Detectors ==
 
== Detectors ==
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=== BigBite ===
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* GEMs
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* GRINCH
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** [[Grinch Gas Panel Camera]]
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* Timing Hodoscope
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* Preshower and Shower
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**[[How to adjust discriminator threshold on HCAL DAC]]
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**[[How to run the scalers script to monitor trigger sum scalers]]
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=== Super BigBite ===
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* GEMs
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* HCAL
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**[[HCal Overview]]

Latest revision as of 13:54, 21 October 2021

THIS IS THE OLD/DEPRECATED SBS SHIFT HOW-to PAGE!!!

To access the new wiki page, follow this link to the new how-to page

Overview

This page gives instructions for various aspects of the experiment relating to each of the major subsystems and shift tasks.

Shift Roles

  • Shift Leader: Executes the Run Plan according to the Run Coordinator's instructions
  • Target Operator: Monitors the target system
  • Data Quality Monitor: Starts and stops CODA DAQ runs and monitors the quality of the data that is being recorded

Reporting and Logging

All shift takers should regularly log shift details in HALOG - the Hall A electronic logbook.

Shift leaders should fill out Beam Time Accounting (BTA) information during the shift.

Taking Data

  • Using the CODA DAQ
    • GUI Description
    • Starting a Run
    • Stopping a Run
  • Monitoring the data
  • Online analysis
  • Shift checklist

Analyzing the Data

This section contains instructions for running the replay script with all detectors on a-onl@aonlX.

Instruction for shift crew

  • Login to a-onl@aonlX (X=1, 2, 3, 4)
  • once logged in, type gosbs => this takes you to the directory where the analysis should be done, and sets up the correct environment variables.
  • type ./run_gmn_50k.sh runnum with
    • runnum (integer) the run number you want to analyze;
  • This analyses the first 50000 events and produces plots that need to be checked.
  • Please review all produced plots of each GUI, and click on "Exit GUI", this will pop the next GUI.
  • After you're reviewed all plots, they will be saved as PDFs.
  • Instructions for full replay to be updated After a run is completed, you may run ./run_gmn_all runnum firstseg nseg with:
    • runnum having the same definition as above;
    • firstseg being the first segment to analyze;
    • nseg the number of segments to analyze.

Specific instructions for experts

Note: these instructions are likely to evolve in a very near future

  • Login to a-onl@aonlX (X=1, 2, 3, 4)
  • once logged in, type gosbs => this takes you to the directory where the analysis should be done, and sets up the correct environment variables.
  • open the analyzer by typing analyzer
  • once in the analyzer type .L replay_gmn.C+
  • type replay_gmn(runnum, nevents, firstevent, file_prefix, firstsplit, nsplits, pedestalmode) with:
    • runnum (integer) the run number you want to analyze;
    • nevents (long integer) the number of events you want to analyze.
    • firstevent (long integer) the event number from which you want to start the analysis;
    • file_prefix (char*)the prefix of the file you want to analyze;
    • firstsplit (integer) the split/segment number at which you want to start the analysis;
    • nsplits (integer) the number of splits/segments you want to analyze
    • pedestalmode (integer) turn pedestal mode on or off for the GEMs

Recovery Procedures

Systems

High Voltage

Alarms

Beam Line

Target

Magnets

EDTM

Detectors

BigBite

Super BigBite

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