Difference between revisions of "Wednesday, August 9, 2017"
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== Agenda == | == Agenda == | ||
| − | # Commissioning plan updates from detector systems | + | # Latif [https://hallcweb.jlab.org/DocDB/0008/000882/001/GEM_Hall_C_Det_Meeting_Aug9th_2017.pdf SLides] |
| + | #Commissioning plan updates from detector systems | ||
# Status update from detector owners, calibrations, efficiencies, etc. | # Status update from detector owners, calibrations, efficiencies, etc. | ||
# Review systems owners and update information | # Review systems owners and update information | ||
| Line 23: | Line 24: | ||
=== General === | === General === | ||
| − | + | * Brad would like to add a few items to the wish list | |
| − | + | ** We need spare VXS crate | |
| − | + | ** Intel single board computers | |
| − | + | * Simona has coincidence modules in the hall that she required for her cosmic test stand setup | |
| − | + | ** These were taken from the Hall-C counting house | |
| − | |||
| − | |||
| − | |||
| − | |||
=== Trigger/DAQ === | === Trigger/DAQ === | ||
| − | + | * GEM crate integration is now an issue see logbook entry: | |
| − | + | ** Most likely a TIpcie issue which has been observed in the past | |
| + | * New fiber optic pull for the HMS has been done | ||
| + | ** FE group is working on completing this | ||
| + | ** Latencies will change since there is one less path for the SHMS | ||
| + | ** Once everything is integrated new latencies in the CRLs will need to be set | ||
| + | * Eric and Carlos will begin conducting work on the production trigger | ||
| + | ** If folks require the DAQ please contact Eric so that he can ensure the DAQ is in a stable state | ||
| + | * Steve reported that he is working on the TI Scalers & proper gating of regular scalers
| ||
| + | ** He will take the HMS DAQ for a while | ||
| + | ** Log book entry will follow to alert folks | ||
=== HMS === | === HMS === | ||
| − | |||
| − | |||
| − | |||
| − | |||
==== 12 GeV Drift Chambers ==== | ==== 12 GeV Drift Chambers ==== | ||
| − | + | * A voltage scan of one chambers has been conducted | |
| − | + | ** A few issues have been identified | |
| − | + | * Some of the efficiencies of the planes appear to be lower than expected | |
| − | + | ** This is a work in progress | |
| − | + | ** A hot wire has been located | |
| − | + | * DC1 is nearly complete | |
| − | + | * DC2 will be tested immediately thereafter | |
| − | + | * The cabeling for all channels is ready | |
| − | + | * The aim is too have DC2 wrapped up by the end of the month | |
| − | + | * They have to mounted in ESB and fiducialized and then moved to hall | |
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
=== SHMS === | === SHMS === | ||
| Line 68: | Line 63: | ||
==== GEM ==== | ==== GEM ==== | ||
| − | + | * Latif showed [https://hallcweb.jlab.org/DocDB/0008/000882/001/GEM_Hall_C_Det_Meeting_Aug9th_2017.pdf some slides] | |
| − | + | * There exists a [https://github.com/JeffersonLab/hcana_gem git repo] for development | |
| − | + | * Readme contains instructions of how to incorporate the GEM analyzer into the hall analyzer | |
| − | + | * The class is THcGEM which is traded in a similar fashion to the other detector classes | |
| − | + | * The GEM data has been shown to exist in the Tree along with other detector associated variables | |
| + | * The mapping still needs to be corrected | ||
| + | * The data that was shown is the data that was taken during latency scans a few weeks ago | ||
| + | * There is a clear plan moving forward | ||
==== Drift Chambers ==== | ==== Drift Chambers ==== | ||
| − | + | * The chamber seems to be gas tight | |
| + | * Brad is working with Chuck L. to verify that the chamber can hold HV while filled with nitrogen | ||
| + | * If functional it will be moved to the ESB for further testing | ||
==== Hodoscopes ==== | ==== Hodoscopes ==== | ||
| − | + | * The PMTs have been removed from 17 bars | |
| − | + | * 13 bars have been cleaned and are ready to be coupled to PMT’s | |
| − | + | * The cookies were in fact thicker than they should have been | |
| − | + | * Some of the PMTs are being delivered to Carl Z. For QE testing | |
| − | + | * Some cookies were 500 um while some were < 200 um | |
| − | + | * There exists a correlation between thick cookies and the XP PMT’s as opposed to the ET’s | |
| − | + | * The new cookie fabrication is proceeding nicely | |
| − | + | ** Sometimes they sheer during fabrication although | |
| − | + | ** A solution is being worked out | |
| − | + | * The new tubes should be shipped from the UK on Aug. 17 | |
| − | + | ** This is okay due to the accelerator delay | |
| + | * Mid September is the nominal goal to have the plane assembled and being tested in the cosmic test stand | ||
Latest revision as of 12:54, 9 August 2017
Meeting Information
- Location CC L210A, 11 am
- DocDB
Blue Jeans Connection Information
- https://bluejeans.com/895800575
- 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: 895800575
- Press #
Agenda
- Latif SLides
- Commissioning plan updates from detector systems
- Status update from detector owners, calibrations, efficiencies, etc.
- Review systems owners and update information
- Address system specific points of interest for the Fall 2017 run
Minutes
General
- Brad would like to add a few items to the wish list
- We need spare VXS crate
- Intel single board computers
- Simona has coincidence modules in the hall that she required for her cosmic test stand setup
- These were taken from the Hall-C counting house
Trigger/DAQ
- GEM crate integration is now an issue see logbook entry:
- Most likely a TIpcie issue which has been observed in the past
- New fiber optic pull for the HMS has been done
- FE group is working on completing this
- Latencies will change since there is one less path for the SHMS
- Once everything is integrated new latencies in the CRLs will need to be set
- Eric and Carlos will begin conducting work on the production trigger
- If folks require the DAQ please contact Eric so that he can ensure the DAQ is in a stable state
- Steve reported that he is working on the TI Scalers & proper gating of regular scalers
- He will take the HMS DAQ for a while
- Log book entry will follow to alert folks
HMS
12 GeV Drift Chambers
- A voltage scan of one chambers has been conducted
- A few issues have been identified
- Some of the efficiencies of the planes appear to be lower than expected
- This is a work in progress
- A hot wire has been located
- DC1 is nearly complete
- DC2 will be tested immediately thereafter
- The cabeling for all channels is ready
- The aim is too have DC2 wrapped up by the end of the month
- They have to mounted in ESB and fiducialized and then moved to hall
SHMS
GEM
- Latif showed some slides
- There exists a git repo for development
- Readme contains instructions of how to incorporate the GEM analyzer into the hall analyzer
- The class is THcGEM which is traded in a similar fashion to the other detector classes
- The GEM data has been shown to exist in the Tree along with other detector associated variables
- The mapping still needs to be corrected
- The data that was shown is the data that was taken during latency scans a few weeks ago
- There is a clear plan moving forward
Drift Chambers
- The chamber seems to be gas tight
- Brad is working with Chuck L. to verify that the chamber can hold HV while filled with nitrogen
- If functional it will be moved to the ESB for further testing
Hodoscopes
- The PMTs have been removed from 17 bars
- 13 bars have been cleaned and are ready to be coupled to PMT’s
- The cookies were in fact thicker than they should have been
- Some of the PMTs are being delivered to Carl Z. For QE testing
- Some cookies were 500 um while some were < 200 um
- There exists a correlation between thick cookies and the XP PMT’s as opposed to the ET’s
- The new cookie fabrication is proceeding nicely
- Sometimes they sheer during fabrication although
- A solution is being worked out
- The new tubes should be shipped from the UK on Aug. 17
- This is okay due to the accelerator delay
- Mid September is the nominal goal to have the plane assembled and being tested in the cosmic test stand
