Summer 2020 DIRC Commissioning

Preliminary Schedule

9/1 Installation and survey until ~18:00 (actually ended closer to ~21:00 followed by sweep)
9/2 00:00 - 9/2 10:00 -- Straight-track data (10 hours, Tuesday night)
9/2 10:00 - 9/2 20:00 -- Ramp solenoid magnet (8 hours, Wednesday day during RF recovery)
9/2 20:00 - 9/3 14:00 -- Full-field data: tracking mode (18 hours, Wednesday night)
9/3 14:00 - 9/3 20:00 -- Full-field data: TRD mode (4 hours, Thursday afternoon)
9/4 De-installation -- Technical crew de-install in the evening?

Notes:

Assumes ~50% beam availability as normal. Schedule could be delayed if beam is down for prolonged period
Magnet ramp on Tuesday morning begins at 10 am to coincide with RF recovery

Summary page for Summer 2020 TRD/GEM Commissioning lists the relevant run ranges for the datasets collected below

For alignment of the GEM/TRD we need to acquire production samples with the magnetic field off
Straight-track sample at the beam-center TRD positions with the full GEM readout for tracking and alignment studies
- Standard GlueX no-field measurements with 50nA on 10^-4 amorphous radiator (on amorphous ladder)
- 2 hours: focused FCAL trigger in GEM location (FCAL_TRACK_CENT.conf) to verify TRD/GEM signals (raw mode)
  - Sergey will be available to setup and test GEM/TRD in DAQ with this configuration
- 8 hours: standard FCAL-BCAL trigger (FCAL_BCAL_PS_m9.conf) for alignment data
  - Start new run every ~2 hours for calibration stability
  - Monitor TRD histograms in RootSpy and typical occupancies (which will be different due to solenoid field being off)

With the aligned GEM/TRD collect data for track extrapolation validation and multi-plane tracking directly upstream of DIRC
Full solenoid field sample at the beam-center TRD positions with the full GEM readout for tracking and alignment studies
Standard GlueX running conditions: diamond 0/90 PARA all using DAQ config hd_all.tsg_DIRC_TRD_HL
- 2 hours: focused FCAL trigger in GEM location at 150 nA (to verify TRD/GEM signals in raw mode)
  - For focused trigger use CONFIG file FCAL_TRACK_CENT20_m9_TRDm10.conf
- 8 hours: standard FCAL_BCAL_PS_m9.conf trigger config at 150 nA (low energy TAGH turned on)
  - Four 2-hour long runs with stable beam
- Turn off low energy TAGH counters using instructions at https://logbooks.jlab.org/entry/3830977:
  - In TAGH HV GUI click "Save/Restore" -> select "Restore HV parameter setpoint" -> select "TAGH_HV_ProductionSummer2020_350nA.snap" and click restore. You should see that channels > 138 all have 0 V. Be sure to check this prior to increasing current above 150 nA!
- 4 hours: standard FCAL_BCAL_PS_m9.conf trigger config at 250 nA (low energy TAGH turned off)
  - Two 2-hour long runs with stable beam
- 4 hours: standard FCAL_BCAL_PS_m9.conf trigger config at 350 nA (low energy TAGH turned off)
  - Two 2-hour long runs with stable beam

For pion rejection performance acquire samples with the TRD in "cluster counting" mode with all the GEM packages read out.
Operate TRDs with two different gasses using raw mode (Lubomir and Sergey are required for these runs)
- 4 hours: standard FCAL-BCAL trigger

Tentative Shift Schedule
Date	Shift	Leader	Expert
Tue Sep 1	4 pm - 10 pm	D. Mack	Sergey (on-site)
Tue Sep 1	10 pm - 4 am	D. Lersch	Justin
Wed Sep 2	4 am - 10 am	E. Smith	Justin
Wed Sep 2	10 am - 4 pm	A. Somov	Sergey/Lubomir