Run Planning Meeting Notes, Feb 16-Feb 22, 2017
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Contents
Wednesday, February 22
- Accelerator Status over the last 24 hrs
- We got beam back at 5pm after beam studies
- Hall D switched from zero crossing to RF extracted [1] [2]
- No downtime incidents of more than 30 minutes after 8 hrs of beam studies
- Harp scans: 5C11(MCC), 5C11B(MCC), Radiator
- (Sigma_X,Sigma_Y) for this scan: (1.10, 0.39), (0.87, 0.20), (0.76, 0.12)
- Previous scan from Feb 18: (0.88, 0.37), (0.71, 0.28), and (0.60, 0.18).
- Beam becomes wider in X and narrower in Y
- Analysis of the latest scan by Hovanes
- Hall-D/GlueX items
- In the last 24 hours:
- ABU 12.37 hrs (1.5 + 4.53 + 6.34), BANU 1.53 hrs (0.17 + 0.82 + 0.54)
- Total triggers collected: 1084 M
- Alex B. did TAGM dark rates study
- 1 hour (33M) empty target run, and 0.5hrs of run with target being filled
- In the last 24 hours:
- Issues
- Program crashes/restarts:
- DAQ - 2 (0 + 1 + 1);
- RootSpy - 0 (0 + 0 + 0)
- elog was down for 2 hours
- Program crashes/restarts:
- Monitoring
- [ Low level monitoring report]
- Run Plan
- Production
- Trigger studies?
- Offline Analysis?
- Any Other Business?
Tuesday, February 21
- Accelerator Status over the last 24 hrs
- Beam was stable when available, with some X variations at AD00C [3]
- Beam studies today from 9 AM to 5 PM
- No Hall access during beam studies
- Our target will be emptied
- Harp scan on Saturday:
- Hall-D/GlueX items
- In the last 24 hours:
- ABU 15.25 hrs (5.69 + 6.08 + 3.48), BANU 2.91 hrs (1.55 + 0.90 + 0.46)
- Total triggers collected: 1650 M
- Solenoid Nitrogen liquid level alarm
- Upper bubbler is nearing its low level
- Prolonged FDC voltage alarm
- 2 additional parasitic TRD runs.
- In the last 24 hours:
- Issues
- Program crashes/restarts: DAQ - 4 (3 + 1 + 0); RootSpy - 1 (0 + 0 + 1)
- Monitoring
- Reinstalled PS reference plot [6]
- Do we need different reference plots for amorphous runs? [7] [8]
- Low level monitoring report
- Run Plan
- Production until beam studies start
- Start emptying the target
- Harp scans upon return of the beam
- Empty target run (1 hour)
- A special run with target being filled
- And back to production...
- Run Plan
- Offline Analysis?
- Any Other Business?
Monday, February 20
- Accelerator Status over the last 48 hrs
- Beam was mostly stable but with some increase in trip frequency [9] [10]
- Apparently, to turn on/off Hall A beam, our beam has to be taken down as well for a few minutes
- 2 downtime incidents of more than 30 minutes on Saturday:
- No significant accelerator downtime on Sunday
- Beam studies tomorrow: either 9:00-14:00, or 14:00-17:00
- Harp scan on Saturday:
- Beam was mostly stable but with some increase in trip frequency [9] [10]
- Hall-D/GlueX items
- In the last 48 hours:
- Feb 18: ABU 14.60 hrs (2.74 + 6.11 + 5.76), BANU 3.24 hrs (2.05 + 0.74 + 0.45)
- Feb 19: ABU 18.22 hrs (5.92 + 6.06 + 6.24), BANU 2.42 hrs (0.70 + 0.83 + 0.89)
- Feb 18: Total triggers collected: 1648 M
- Feb 19: Total triggers collected: 1720 M
- 2 parasitic TRD runs have been taken with different radiators.
- Trigger studies were performed by Sascha both on Saturday and Sunday
- In the last 48 hours:
- Issues
- Once, the goniometer got stuck moving, and Hovanes had to fix it [13]
- May be, related to the above - "unknown" diamond orientation [14]
- Puzzling CSS problem with TOF FADC scalers: [15]
- RootSpy issues:
- DAQ issues:
- Zero counting rate for some ROCs [21] while occupancy plots are normal
- Sergey did ~30 min of DAQ testing during on Saturday
- Monitoring
- New PSC reference plot [22] [23]
- New FDC reference plot [24]
- New holes in FCAL occupancy [25]
- Low level monitoring report (Feb 19)
- Low level monitoring report (Feb 20)
- Run Plan
- Production, production, production...
- Do we need an empty target run on Tuesday?
- Offline Analysis?
- Any Other Business?
Saturday, February 18
- Accelerator Status
- Beam was mostly stable in the last 24 hrs [26]
- BPM calibration
- Hall-D/GlueX items
- In the last 24 hours:
- ABU 16.73 hrs (5.80 + 5.32 + 5.61), BANU 1.73 hrs (0.28 + 0.72 + 0.73)
- Total triggers collected: 1813 M
- Better settings for JTV 7 Nitrogen supply valve
- Oscillating target pressure? [32]
- Progress on fixing random 32ns shift of TDC times [33]
- Software issues:
- In the last 24 hours:
- Monitoring
- Run Plan
- Production, production, production...
- Harp scan
- Sascha's trigger studies?
- Offline Analysis?
- Beam energy so far
very stable around 11.650 GeV - Preliminary flux estimate
From 1.0*107 to 1.2*107 for different diamond orientations at 100nA
- Beam energy so far
- Any Other Business?
Friday, February 17
- Accelerator Status
- Hall was in controlled access from 7:00 till 16:30 for RF separator studies
- Work on TRD GEM by Kondo during this time
- Alexandre has retrieved supplemental dosimetry from the tagger
- Production restarted at 17:30
- Stable beam since then (max 10 minutes off on 2 occasions) [39]
- Radiation levels are about the same as earlier [40]
- Harp scans: MCC and ours.
- In terms of (Sigma_X, Sigma_Y) at 5C11, 5C11B and radiator:
- (0.83, 0.32), (0.63, 0.24), (0.68, ??? - the fit has failed)
- Beam is ~20% tighter in X and twice narrower in Y comparing with a day ago
- Photon transmission is about the same as a day ago
- In terms of (Sigma_X, Sigma_Y) at 5C11, 5C11B and radiator:
- BPM calibration?
- AD00 BPM is no longer the same as AD00C BCM but only 40% of it [41]
- Hall was in controlled access from 7:00 till 16:30 for RF separator studies
- Hall-D/GlueX items
- In the last 24 hours:
- ABU 10.32 hrs (0 + 4.54 + 5.78), BANU 2.13 hrs (0 + 1.17 + 0.96)
- Total triggers collected: 1046 M
- The usual DAQ and RootSpy issues make shifts entertaining
- In the last 24 hours:
- Monitoring
- 32ns TDC-ADC offsets:
- Low Level Monitoring Report (today)
- Low Level Monitoring Report (Feb 16)
- Run Plan
- Production, production, production...
- Sascha's trigger studies?
- Offline Analysis?
- Any Other Business?
Thursday, February 16
- Accelerator Status
- Stable accelerator running over the last 24 hours
- Harp scans:
- MCC scans before and after Todd's script
"Good enough -- horizontal convergence is nearly spot on, and vertical convergence is a little shallow but ok." - Our scan: before and after Todd's script
- In terms of (Sigma_X, Sigma_Y) at 5C11, 5C11B and radiator:
- Before: (1.31, 0.63), (1.08, 0.73), (1.03, 0.41)
- After : (1.07, 0.51), (0.79, 0.50), (0.78, 0.32)
- MCC scans before and after Todd's script
- Convergence studies from Hovanes: Feb 15 vs Feb 9
- Beam sigma at the radiator: 0.6cm (Feb 15) vs 0.5cm (Feb 9)
"... uncertainties ... a lot larger compared to Feb 9. It is hard to make any conclusions about the improvement of the spot."
- Beam sigma at the radiator: 0.6cm (Feb 15) vs 0.5cm (Feb 9)
- Work on RF separation will start at 7:30 AM today and last for 2-3 hours
- Hall-D/GlueX items
- In the last 24 hours:
- ABU 17.66 hrs (4.97 + 6.37 + 6.32), BANU 2.21 hrs (1.27 + 0.40 + 0.54)
- Total triggers collected: 1856 M
- A usual assortment of DAQ crashes
- RootSpy tips:
- Restarting cMsg server
- Multiple instances of RootSpy on gluon47
"... no more than 1 or 2 instances running in the counting house at any point in time."
- New BCAL gain constants in ccdb [44]
- In the last 24 hours:
- Monitoring
- A new instance of 32ns ADC-TDC offset: [45]
- Run Plan
- 7:00 AM - 7:30 AM ==> Hall safety walk-through (After RADCON does it job)
- 7:30 AM - about 10 AM ==> MCC works on RF separation
- A new harp scan after RF separation work is done
- Production data
- Offline Analysis?
- Any Other Business?