Fall 2019 Commissioning Meetings
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Contents
Meeting Information
GlueX DIRC Meeting
Tuesdays and Thursdays, December 3-19
10:00 am, EDT
Hall D Counting House
Connection Using Bluejeans
- To join via Polycom room system go to the IP Address: 199.48.152.152 (bjn.vc) and enter the meeting ID: 846453895.
- To join via a Web Browser, go to the page [1] https://bluejeans.com/846453895 .
- To join via phone, use one of the following numbers and the Conference ID: 846453895
- US or Canada: +1 408 740 7256 or
- US or Canada: +1 888 240 2560
- More information on connecting to bluejeans is available.
Useful Links:
Tuesday, December 17
- Initial data analyses (early runs 70817-70849):
- Total statistics around ~6 billion triggers, should get close to statistics we had last Spring
- Upcoming plans:
- Remaining GEM data with focused FCAL trigger
- Additional DIRC threshold/gain/HV settings:
- High rate tests: paths to eliminate DIRC as bottleneck
Thursday, December 12
- Initial data (70817-70849) reconstruction complete:
- REST, histogram and tree files appearing at: /volatile/halld/home/gxproj7/RunPeriod-2019-11/dirc_monitoring/ver00
- Waiting for runs 70937+ to be transferred to the /cache/ disk
- VERY preliminary first look with FastDIRC
- Upcoming plans:
- More GEM data with focused FCAL trigger
- High rate trigger/DAQ tests, including DIRC (Sasha)
- CPP test, 1 hr (David)
Tuesday, December 10
- First field-on data Friday evening: Run 70817+
- Initial issues with timing now resolved and data processing some plots
- Initial data reconstruction underway:
- REST, histogram and tree files appearing at: /volatile/halld/home/gxproj7/RunPeriod-2019-11/dirc_monitoring/ver00
- Unfortunate data loss before accelerator vacuum issue: Run 70850-70895: https://logbooks.jlab.org/entry/3750309
- LED Analysis: (Ahmed/Bill/Andrew)
- Upcoming plans:
- When beam is back continue with nominal conditions: Threshold = pedestal + 100, equalized gains, HV = 1000 V
- Dedicated runs with GEM detector included with low trigger rate
Thursday, December 5
- Collected straight track data in "beam left" position: see correlations with TRD wire chamber and GEM SRS (APV) modules
- A couple runs with DIRC included for initial tests (70720 and 70721)
- LED Analysis: (Ahmed/Bill)
- Upcoming plans:
- Today/tonight: Straight track data in center and right positions by Friday morning.
- Friday: Ramp solenoid and setup for DIRC commissioning
- Weekend: DIRC commissioning with full solenoid field!
Tuesday, December 3
- Status update from the Hall
- Plans for straight track data