Wednesday, February 08, 2017
From HallCWiki
Contents
Meeting Information
- Location CC L102, 11 am
- DocDB
- Brad's Email
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
Miscellaneos
- Hall C DAQ: B. Sawatzky
Slides
General Questions to be Addressed by Individual Groups
- What is the current status on the Hardware?
- Identify any remaining bad detectors/channels. (Show a quick slide that indicates status?)
- Are there plans to repair them prior to the KPP run, or after KPP?
- What is the status of the Software associated with your detector?
- Have you successfully run the analyzer and been able to identify signals for your detector?
- Have the HV <-> ADC <-> TDC channel mappings all been verified to be correct?
- Have any relevant survey/position information been updated your detector's PARAM files?
- Have all calibration constants been updated in the PARAM files (ie. gains, time offsets, etc...)?
- If beam is needed to finalize these params, is the software chain ready to go to generate them quickly?
- Can you think of anything else that needs to be completed before we take beam?
- Missing software you need?
- Missing survey/position information to complete the PARAM files?
Specific Questions to be Addressed
- HMS & SHMS Drift Chambers
- Can we acquire tracks from the cosmic data yet?
- NGC
- Are the HV signal cables hooked up?
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.
- Set HW limit on all HV cards to set a reasonable hardware limit
- Dave Mack volunteered
- Brad will get him a screwdriver
- Dave Mack volunteered
HMS
Drift Chambers
- System Owner: E. Pooser
- Ethane:Argon now in use
- Working on final offsets for alignment params from Survey added to PARAM files
- Tracking is working though
- A few dead channels(known), no hot channels
- Calibration constants are up-to-date in PARAM files
- Need to recheck deficiencies with the Eth:Ar gas (should happen this week)
Hodoscopes
- System owners: S. Malace, M. Jones]
- Hardware in good shape
- Rough timing calibration is done
- Generally in good shape
Shower
- System Owners: H. Mkrtchyan, Yerevan
- PMTs are powered up, but can't see good signals now
- Saw signals in the past: see Simona's ERR talk
- Needs to be followed up -- not sure what changed
- Maybe need to check the gains / HVs
Heavy Gas Cherenkov
- System owners: B. Sawatzky, E. Pooser
- Pump and fill with CO2 is in progress now
- Hopefully complete by end of week
- Signals cables have been patched through from the Hut to the F250's upstairs
- PMTs are showing dark current signals
- They need to be reconnected to the patch panel in the hut
SHMS
Drift Chambers
- System owners: E. Christy, D. Biswas
- Need to get resurveyed (Walter)
- No tracks from the analyzer yet
- Jure is trying to figure out the PARAM file settings
- Ethane:Argon now in use
- 3 cards of missing data
- 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]
- Plastic scintillators in good shape
- Gain matching complete
- Quartz plane status
- Bars 7--16 (middle) are the 'working' bars for now (though bar 16 is poor)
- 4 of the 9 bars show correlated signal using using course tracking cuts from hodoscopes
- Real tracking from SHMS chambers will help this analysis when available
- Another 4 bars are questionable, playing with gains, etc
- 9th bar (#16) has XP tube on one end which in really bad shape
Shower/Pre-shower
- System owners: H. Mkrtchyan, Yerevan
- 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
- Shower
- One bad PMT (pulling too much current)
- Block is outside acceptance, so maybe fix in summer?
- Very small signals visible in most channels, could be due to backwards cosmics?
- Not sure if this is OK or not
Aerogel Cerenkov
- System owners: A. Mkrtchyan, T. Horn
- All signals present in DAQ
- Large attenuation noted between upstairs and downstairs
- Seems to be confusion about summing, splitting upstairs, need to be clarify what we really want -- talk to Brad
- One missing channel, Arthur working on it
- Most channels seem to be OK downstairs but show a lot of noise Counting House, this needs to be solved.
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
- Need to remove paper PMT targets
- Donal will organize for this to happen next week.
HGC
- System owners: G. Huber, B. Li
- Will be filled with CO2
- Pump and fill is in progress this week (Brad)
- One dead channel chased to bad cable -- fixed
- 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