[Hallcsw] Hall C Detector/SW status Meeting -- 22 Feb 2017, 11am EST (L210A)

[Brad Sawatzky]

Hi all,

The next Hall C Detector/SW status Meeting will be 
  11am EST, 22 Feb 2017 in Room L210A

Note that we will meet in the 'usual' Hall C software meeting room
above the atrium (L210A).

I'd appreciate a quick status update from the Detector owners.  Same
general format as last week, but with a focus on what is 'broken/todo'
and/or what has been corrected since the last meeting.

If you have a short update -- feel free to just email me prior to the
meeting and I will pass it on to the group.

Please take a first pass putting your documentation on the wiki as
indicated in the 'General' section below.

-- Brad (et al.)

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======================= Very Rough Notes from Feb 15, 2017 =======================

--------------------------------
GENERAL:
--------------------------------
* All groups are requested to update documentation on the wiki.
  We will use these as references for shift crew later.  See links under
  'System Owners' here:
    https://hallcweb.jlab.org/wiki/index.php/Wednesday%2C_February_07%2C_2017#System_Owners
  * Use the 'HMS Drift Chambers' entries as an example
  - Links should point to documents in the DocDB
  - Don't just upload to the wiki.

* Please ensure any hardware changes you make get put in the HCLog.
  Even if they shouldn't matter to others, it is very useful to
  have the history logged *AND* a record of where people have been
  working.  (Sometimes another group's cable gets knocked loose, etc.)


--------------------------------
MISC:
--------------------------------
- Gunning: Raster pickoffs available
  - need to get them in to the DAQ

- Wood: V2F hardware available but signals need to be set up (confirm)
  - ie. BCMs, etc

- Ahmed:  scaler checks to be done
  - plug a known pulser in to channels and verify maps
  - need to verify that the xscaler displays on hcdesk machines,
    mapping is correct

- Jure: Event display
  - two viewers, one for HMS, one for SHMS
  - Jure will check that the viewers work on the hcdesk machines

--------------------------------
HMS:
--------------------------------
* Remove the Aerogel and place in clean room for repairs [Hamlet]
  - Brad: update wiki with note that Aerogel will not be available
  - Eric Pooser:  Jack was involved in pulling the Aerogel -- not sure
    if Aerogel is out yet


--------------------------------
SHMS:
--------------------------------
- Drift Chambers [*Christy, Biswas]
  - now resurveyed
  - no tracks from the analyzer yet, Jure is trying to figure out the
    PARAM file settings
  - working on chasing remaining missing signals
  - plan to do voltage scan and check efficiency with new Eth:Ar mix
  - need to do drift times and T0 calibration in the software

- Hodoscopes  [*Malace, Jones]
  - difficulties with restoring HV this morning (Wed)
  - Simona would like to be the person who manages HVs for hodoscopes for now
    so she can watch for problems
  - quartz plane status: stable

- Shower/Pre-shower [*Mkrtchyan, Yerevan]
  - Trip currents updated in GUI
  - Please don't change HVs without contacting Hamlet
  - Ask Chuck will turn the Shower fans on -- just leave them on

  Preshower
  - All channels good
  - Gains are high, can see muons in all channels
  - May need to remove amplifier and replace with passive splitter
    - Be sure to communicate with Brad before doing this.
  * Active splitters removed for now.  Can reinstall passive splitters later
    (post-KPP)

  Shower:
  * One bad PMT (confirmed)
    - block is outside acceptance, so maybe fix in summer?

- Aerogel Cerenkov [*Arthur, Horn]
  - splitter was removed
  - all 14 signals are now present (missing channel restored)
  - good signals observed

- NGC  [*D. Day, Pooser]
  - Tank will be filled with Argon after it is installed.
  - Waiting for installation into the SHMS stack (presently on the Hall C
    floor)
  - HV and signal cables are run and verified into DAQ upstairs
  - PMT targets removed 2/16; tank read for installation

- HGC [Huber, *Li]
  - Will be filled with CO2.
    - Pump and fill is in progress this week (Brad)
  - all channels look alive
  - hardware and basic software set up is in good shape
  - may want to switch FADCs front-end digitizer FSR to 2V later