Difference between revisions of "Wednesday, February 15, 2017"
From HallCWiki
Jump to navigationJump to search| Line 90: | Line 90: | ||
* Please don't change HVs without contacting Hamlet | * Please don't change HVs without contacting Hamlet | ||
* Ask Chuck will turn the Shower fans on -- just leave them on | * 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 | |
| − | * All channels good | + | ** May need to remove amplifier and replace with passive splitter |
| − | * Gains are high, can see muons in all channels | + | *** Be sure to communicate with Brad before doing this |
| − | * May need to remove amplifier and replace with passive splitter | + | ** Active splitters removed for now |
| − | ** Be sure to communicate with Brad before doing this | + | *** Can reinstall passive splitters later (post-KPP) |
| − | * Active splitters removed for now | + | * Shower |
| − | ** Can reinstall passive splitters later (post-KPP) | + | ** One bad PMT (confirmed) |
| − | + | *** Block is outside acceptance, so maybe fix in summer? | |
| − | |||
| − | |||
| − | * One bad PMT (confirmed) | ||
| − | ** Block is outside acceptance, so maybe fix in summer? | ||
==== Aerogel Cerenkov ==== | ==== Aerogel Cerenkov ==== | ||
Latest revision as of 20:06, 21 February 2017
Meeting Information
- Location CC L102, 11 am
- DocDB
Blue Jeans Connection Information
- https://bluejeans.com/654704307/
- Just want to dial in on your phone?
- +1.408.740.7256 (US)
- +1.888.240.2560 (US Toll Free)
- +1.408.317.9253 (Alternate number)
- http://bluejeans.com/numbers
- Enter Meeting ID: 654704307
- Press #
Agenda
- Review systems owners and update information if needed
- Point system owners to Wiki's that need to be addressed for the upcoming commissioning run
- Address system specific points of interest for the upcoming commissioning run
System Owners
HMS
- Drift Chambers: E. Pooser
- Hodoscopes: S. Malace, M. Jones
- Shower: H. Mkrtchyan, Yerevan
- HGC: B. Sawatzky
SHMS
- Drift Chambers: E. Christy, D. Biswas
- Hodoscopes: S. Malace, M. Jones
- Shower/Pre-shower: H. Mkrtchyan, Yerevan
- Aerogel Cerenkov: A. Mkrtchyan, T. Horn
- NGC: D. Day, E. Pooser
- HGC: G. Huber, B. Li
Minutes
General
- All groups are requested to update documentation on the wiki link
- We will use these as references for shift crew later.
- See links under 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.
- 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
Miscellaneous
- Gunning: Raster pickoffs available
- Need to get them in to the DAQ
- S. Wood: V2F hardware available but signals need to be set up (confirm) ie. BCMs, etc
- Z. 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
- System owners: E. Christy, D. 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
- System Owners: S. Malace, M. 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
- System owners: H. 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?
- One bad PMT (confirmed)
Aerogel Cerenkov
- System owners: A. Mkrtchyan, T. Horn
- Splitter was removed
- All 14 signals are now present (missing channel restored)
- Good signals observed
NGC
- System owners: D. Day, E. 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
- System owners: G. Huber, B. 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
