Difference between revisions of "How-to"

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(General How-to's)
 
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NOTE: If you can't solve the problem in 1 hour you ''MUST'' then contact the Run Coordinator!'''  (See also [[Experts on call]])
 
NOTE: If you can't solve the problem in 1 hour you ''MUST'' then contact the Run Coordinator!'''  (See also [[Experts on call]])
 
== Polarized He3 Specific Information ==
 
* [[Media:Glass_Cell_Target_Change_Procedure.pdf | Procedure for Moving Between Target Cells (pdf)]] [[Media:Glass_Cell_Target_Change_Procedure.odp | (ODP)]]
 
* [[Media:SIMPLIFIED REFERENCE CELL PROCEDURES.pdf|Reference Cell Fill Procedure (PDF)]] ([[Media:SIMPLIFIED REFERENCE CELL PROCEDURES.docx|docx]])
 
* [[Pol He-3 Target Screen Setup|Pol He-3 Target Screen Setup / How-tos]]
 
* [[Pol_He-3_Target_Information|Polarized He3 Target Information]]
 
* [[Pol_He-3_Operational_Restrictions|Pol He3 Operational Restrictions (raster, beam current limits, etc)]]
 
* [[Polarized_Helium-3_Experiments#New_Online_Monitoring_Instructions|Online Analysis Instructions]]
 
* [[How to check for Scraping on Target Cell Walls|How to check for Scraping on Glass Target Cell Walls]]
 
* [[Ramp Rate Lock | How to check if the beam current ramp protection is on (Pol He3)]]
 
* [[Charge Feedback Parity DAQ]]
 
  
 
== General How-to's ==
 
== General How-to's ==
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* [[Analysis How-to]]
 
* [[Analysis How-to]]
  
* [[Beam Checkout Procedures]]
+
* [[Beam Checkout Procedures]] Includes -
 +
** Raster checks
 +
** Harp scans
 +
** Carbon hole check
  
 
* Hall C Raster
 
* Hall C Raster
 
**If problems call Raster experts in order of listed on  [https://hallcweb.jlab.org/wiki/index.php/Experts_on_call#On_call_Experts Expert on call page].
 
**If problems call Raster experts in order of listed on  [https://hallcweb.jlab.org/wiki/index.php/Experts_on_call#On_call_Experts Expert on call page].
 
**Raster procedure is located at [http://opsntsrv.acc.jlab.org/ops_docs/online_document_files/MCC_online_files/hallC_target_raster_proc.pdf Hall C Fast Raster Setup Procedure]
 
**Raster procedure is located at [http://opsntsrv.acc.jlab.org/ops_docs/online_document_files/MCC_online_files/hallC_target_raster_proc.pdf Hall C Fast Raster Setup Procedure]
**The raster X and Y signals that go into the DAQ are also shown on an oscilliscope in rack CH03B14. See [https://logbooks.jlab.org/entry/3748775 logbook entry] for a movie of good oscilliscope signals. The X and Y should be 90 degrees out of phase and the amplitude variation in sync.  
+
**The raster X and Y signals that go into the DAQ are also shown on an oscilliscope in rack CH03B14.
** If raster signal's amplitude variation is not in sync, then ask MMC to go to the "Waveform Generator" page ( top right corner of the Hall C fast raster page). On the "Waveform Generator" page have MCC click on the "SYNC ARB" button.
+
<!--
** If raster signal's phase is not 90 degrees, then ask MMC to go to the "Waveform Generator" page ( top right corner of the Hall C fast raster page). On the "Waveform Generator" page have MCC click on the "SYNC PHASE" button.
+
** Instructions for circular raster ( not using as of AUg 2021)
 +
*** See [https://logbooks.jlab.org/entry/3748775 logbook entry] for a movie of good oscilliscope signals. The X and Y should be 90 degrees out of phase and the amplitude variation in sync.
 +
*** If raster signal's amplitude variation is not in sync, then ask MMC to go to the "Waveform Generator" page ( top right corner of the Hall C fast raster page). On the "Waveform Generator" page have MCC click on the "SYNC ARB" button.
 +
*** If raster signal's phase is not 90 degrees, then ask MMC to go to the "Waveform Generator" page ( top right corner of the Hall C fast raster page). On the "Waveform Generator" page have MCC click on the "SYNC PHASE" button.
 +
-->
  
 
* DAQ Related Help
 
* DAQ Related Help
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***[https://hallcweb.jlab.org/munin/gas_shed-day.html Flow and Temperature Charts] (generated by iochcgs.acc.jlab.org)
 
***[https://hallcweb.jlab.org/munin/gas_shed-day.html Flow and Temperature Charts] (generated by iochcgs.acc.jlab.org)
  
 +
* [[Big Screen / Wall TVs]]
 
* [[High_Voltage|High Voltage Controls]]
 
* [[High_Voltage|High Voltage Controls]]
 
** Run 'go_hv' and follow instructions
 
** Run 'go_hv' and follow instructions
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*[[Hall C Drift Chamber Threshold Controls]]
 
*[[Hall C Drift Chamber Threshold Controls]]
 
* Hall C BPMs: Run '''go_bpms''' from the ''cdaq'' account
 
* Hall C BPMs: Run '''go_bpms''' from the ''cdaq'' account
*[[Target BPMs | How to open target BPM screen]] (This display projects the BPM positions to the target (PolHe3))
 
 
*[[Hall C Harps | How to see results of Hall C harp scans]]
 
*[[Hall C Harps | How to see results of Hall C harp scans]]
 
*[[Hall C YAG Viewer | How to bring up the Hall C YAG Viewer camera]]
 
*[[Hall C YAG Viewer | How to bring up the Hall C YAG Viewer camera]]
 
*[[Hall C Alarm Handler | How to bring up the Alarm Handler]]
 
*[[Hall C Alarm Handler | How to bring up the Alarm Handler]]
 +
*Counting House Cameras (Four Halls) &bull; Run '''go_cameras_CH''' from ''cdaq'' or ''cvideo'' account
 
*[[Hall C Cameras | Hall C cameras]]
 
*[[Hall C Cameras | Hall C cameras]]
 
*[[Hall C BCM Temperatures]]
 
*[[Hall C BCM Temperatures]]
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* [https://hallcweb.jlab.org/DocDB/0009/000957/001/NonInvasiveBCMCalibration.pdf How to perform a BCM calibration]
 
* [https://hallcweb.jlab.org/DocDB/0009/000957/001/NonInvasiveBCMCalibration.pdf How to perform a BCM calibration]
 
* [https://hallcweb.jlab.org/DocDB/0010/001006/001/Radiator.pdf How to operate the Hall-C Radiator (J/Psi Experiment)]
 
* [https://hallcweb.jlab.org/DocDB/0010/001006/001/Radiator.pdf How to operate the Hall-C Radiator (J/Psi Experiment)]
 +
 +
=== [[Expert Information]] ===
 +
{{:Expert Information}}
  
 
== Spectrometer Magnets ==
 
== Spectrometer Magnets ==
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*[[Resetting Magnet Interlocks]]
 
*[[Resetting Magnet Interlocks]]
 
*How-to power cycle SHMS PLC I/O chassis: https://logbooks.jlab.org/entry/3625900
 
*How-to power cycle SHMS PLC I/O chassis: https://logbooks.jlab.org/entry/3625900
 +
* [https://logbooks.jlab.org/entry/3933073 Resetting the "ioc heartbeat epics communications" (start by clicking on the heart at upper left of the magnet controls screen]
  
 
== How to Rotate the HMS and SHMS ==
 
== How to Rotate the HMS and SHMS ==

Latest revision as of 12:13, 27 April 2022

NOTE: If you can't solve the problem in 1 hour you MUST then contact the Run Coordinator! (See also Experts on call)

General How-to's

  • Make HCLog entries using the logbook page, or by running 'hclog' in a terminal.
    • Please be concise, but clear. Assume you will need to search for, and understand, an entry 12 months from now (or longer).

Expert Information

This page tries to capture/consolidate some low-level details in the Hall C Counting House configuration. In general every directory/system will contain one or more README files describing the relevant software/philosophy etc. The majority of the configuration files/code are also stored in git repos with remotes on the hallcgit.jlab.org host.

Historically most of these items have been managed by Brad Sawatzky [1] and Stephen Wood [2]. Feel free to contact them with questions.

Detector/DAQ 'pre-beam' Checklist

This is a copy of the Detector/DAQ 'pre-beam' Checklist that is generally completed prior to beam delivery into the Hall (after a SAD or an extended down). It is intended to ensure that basic operational things like crate fans, crates, HVs, gas configuration, etc are confirmed and logged. This is typically requested by the Hall Work Coordinator (ie. Walter Kellner) and gets logged to the HCLOG. An example can be found here HCLog 3968308.

Print out two copies. One for HMS, one for SHMS: File:Detector readiness checklist.pdf, (File:Detector readiness checklist.ods)

Spare Hardware Locations

  • CAMAC, NIM: Hall C Counting House cabinets (in electronics room by door to the outside)
  • VME: Counting House, 2nd floor, blue module cabinet in Jack Segal's area
  • HV: Counting House, 2nd floor, cabinet in "G0 cage"
  • PMTs, HV bases: EEL/126 cabinet at rear of room (labelled, standard 'A12' keyed lock)
  • Wiener Crate control units (front panel, ethernet, etc): EEL/126 cabinet

ESB / Building 23 (NE corner)

This has been my staging and test area for a number of years and contains several DAQ test beds supporting several groups. The hardware, cabling, modules in that space should generally be considered as either 'in-use' or as being staged for a near-term future experiment (ie. NPS/LAD/GEn-RP). The experiment on the floor takes priority, of course, but don't steal from future experiments without actively following up on replacing that hardware.

  • CAEN Sy45xx crates and modules (NPS)
  • Wiener VXS crates (NPS)
  • FADCs, SD, TI, boards etc (NPS)
  • Cabling (NPS, GEn-RP)

Spectrometer Magnets

How to Rotate the HMS and SHMS

SHMS Detectors

HMS Detectors

Polarized 3He target in Hall C

Hall C Cryo-target

Legacy Documentation