Difference between revisions of "How-to"

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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]])
  
== How-to's ==
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== 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]])
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* [[Pol He-3 Target Screen Setup|Pol He-3 Target Screen Setup / How-tos]]
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* [[Pol_He-3_Target_Information|Polarized He3 Target Information]]
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* [[Pol_He-3_Operational_Restrictions|Pol He3 Operational Restrictions (raster, beam current limits, etc)]]
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* [[Polarized_Helium-3_Experiments#New_Online_Monitoring_Instructions|Online Analysis Instructions]]
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* [[How to check for Scraping on Target Cell Walls|How to check for Scraping on Glass Target Cell Walls]]
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* [[Ramp Rate Lock | How to check if the beam current ramp protection is on (Pol He3)]]
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* [[Charge Feedback Parity DAQ]]
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 +
== General How-to's ==
  
 
* The [https://hallcweb.jlab.org/safety-docs/current/Standard-Equipment-Manual.pdf Hall C Operations Manual] is a thorough and up-to-date set of instructions.
 
* The [https://hallcweb.jlab.org/safety-docs/current/Standard-Equipment-Manual.pdf Hall C Operations Manual] is a thorough and up-to-date set of instructions.
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* [https://misportal.jlab.org/mis/apps/physics/shiftChecklist/index.cfm?shiftChecklistTypeId=2 Electronic Shift Checklist] should be completed once per shift.
 
* [https://misportal.jlab.org/mis/apps/physics/shiftChecklist/index.cfm?shiftChecklistTypeId=2 Electronic Shift Checklist] should be completed once per shift.
** This 'How to' page can help you find most items (see below).  You may also find the instructions [https://hallcweb.jlab.org/document/Checklist/CurrentChecklist.pdf here] helpful.
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** [[Shift Checklist Help]]
  
 
* [[Analysis How-to]]
 
* [[Analysis How-to]]
  
 
* [[Beam Checkout Procedures]]
 
* [[Beam Checkout Procedures]]
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 +
* Hall C Raster
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**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].
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**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.
 +
** 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
 
** [[Hall_C_DAQ|Hall C DAQ Setup / Restart Instructions]]
 
** [[Hall_C_DAQ|Hall C DAQ Setup / Restart Instructions]]
 +
** [[Hall_C_DAQ#Live_Time_Display|DAQ Live Time missing?]]
 
** [[Hall-C_HMS_DAQ_Failure_Modes | "HMS DC may be ringing (check replay now)" alarm]]
 
** [[Hall-C_HMS_DAQ_Failure_Modes | "HMS DC may be ringing (check replay now)" alarm]]
  
* [https://hallcweb.jlab.org/DocDB/0008/000828/001/hallc_collimators.pdf Collimator control for HMS/SHMS]. Also includes description of the collimators.
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* Collimator, Sieve Controls
** EPICS screens can be found at jmenu -> <search for> "HMS coll" and you'll see both entries
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** EPICS screens can be found at jmenu -> <search for> "HMS coll" and you'll see both entries
** The usual collimator settings are HMS : "Large Collimator" and SHMS : "Collimator".
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*** The usual collimator settings are HMS : "Large Collimator" and SHMS : "Collimator".
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*** The usual sieve settings are "HMS: Sieve" and SHMS: "Centered Sieve"
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** [https://hallcweb.jlab.org/DocDB/0010/001002/002/Instructions-power-cycle-HallC-collimators.pdf Instructions for power cycling the drive controllers for the HMS/SHMS collimators]. [https://hallcweb.jlab.org/doc-private/ShowDocument?docid=1002 DocDB Page]
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** [https://hallcweb.jlab.org/DocDB/0008/000828/001/hallc_collimators.pdf More detailed info on collimator controls]. Also includes description of the collimators.
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* [[Scalers|Hall C Scalers & xscalers instructions]] for HMS and SHMS.
 
* [[Scalers|Hall C Scalers & xscalers instructions]] for HMS and SHMS.
  
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*** See [https://hallcweb.jlab.org/safety-docs/current/Standard-Equipment-Manual.pdf Standard Equipment Manual]
 
*** See [https://hallcweb.jlab.org/safety-docs/current/Standard-Equipment-Manual.pdf Standard Equipment Manual]
 
***[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)
** Cerenkov Gas System
 
  
 
* [[High_Voltage|High Voltage Controls]]
 
* [[High_Voltage|High Voltage Controls]]
 
** Run 'go_hv' and follow instructions
 
** Run 'go_hv' and follow instructions
 
* [[EPICS/Accelerator Screens]]
 
* [[EPICS/Accelerator Screens]]
** Also includes Stripcharts, Gas System info, Collimator controls, Chamber Thresholds, Harps, etc...
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** Also includes Stripcharts, Gas System info, Collimator controls, Chamber Thresholds, Harps, Energy/Position Locks, etc...
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*[[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]]
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*[[Hall C Pedestal Runs and Determining FADC Thresholds | How to perform pedestal runs and determine FADC thresholds]]
 
*[[Hall C Pedestal Runs and Determining FADC Thresholds | How to perform pedestal runs and determine FADC thresholds]]
 
*[[Hall C Raster Runs | How to perform raster runs]] (this is the equivalent of spot++)
 
*[[Hall C Raster Runs | How to perform raster runs]] (this is the equivalent of spot++)
*[https://logbooks.jlab.org/entry/3588049 How to check the HMS discriminator threshold read back]
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*[[Bull's Eye Scan | Bull's Eye Scan -- BPM calibration instructions]]
* [https://hallcweb.jlab.org/DocDB/0009/000957/001/NonInvasiveBCMCalibration.pdf BCM Calibration]
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* HMS discriminator threshold read back is now in the Alarm Handler (no manual check required)
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** [https://logbooks.jlab.org/entry/3588049 How to check the HMS discriminator threshold read back] -- Obsolete
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** [https://logbooks.jlab.org/entry/3811562 HMS discriminator threshold added to alarm handler] -- Updated entry (June, 2020)
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* [https://hallcweb.jlab.org/DocDB/0009/000957/001/NonInvasiveBCMCalibration.pdf How to perform a BCM calibration]
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* [https://hallcweb.jlab.org/DocDB/0010/001006/001/Radiator.pdf How to operate the Hall-C Radiator (J/Psi Experiment)]
  
 
== Spectrometer Magnets ==
 
== Spectrometer Magnets ==
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*[[HMS Cherenkov | Cherenkov]]
 
*[[HMS Cherenkov | Cherenkov]]
  
== Hall C target ==
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== [[Polarized 3He target in Hall C]] ==
[https://hallcweb.jlab.org/DocDB/0008/000836/001/HallCTargetConfiguration2-6-17.pdf Hall C target configuration for Spring 17 running]
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{{:Polarized_3He_target_in_Hall_C}}
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 +
== Hall C Cryo-target ==
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* [https://userweb.jlab.org/~smithg/target/Qweak/#_12_GeV_Era Hall C 12-GeV Era Cryotarget Instructions]
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* [https://hallcweb.jlab.org/DocDB/0008/000836/001/HallCTargetConfiguration2-6-17.pdf Hall C target configuration for Spring 17 running]
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* [https://hallcweb.jlab.org/DocDB/0010/001006/001/Radiator.pdf How to operate the Hall-C Bremsstrahlung Radiator for the J/Ψ -007 Experiment (Spring 2019)]
  
 
== Legacy Documentation ==
 
== Legacy Documentation ==

Latest revision as of 14:29, 17 September 2020

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

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).
  • Hall C Raster
    • If problems call Raster experts in order of listed on Expert on call page.
    • Raster procedure is located at 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 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.

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