Difference between revisions of "Run Planning Meeting Notes, Feb 6 - Feb 13, 2019"
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| − | == | + | == Wednesday, Feb. 13 at 08:45 == |
# Notes from the past 24 hours: | # Notes from the past 24 hours: | ||
#*Investigations of SSP problem | #*Investigations of SSP problem | ||
| Line 9: | Line 9: | ||
#*Beam stirring issue. MCC cannot deliver more than 65 nA. | #*Beam stirring issue. MCC cannot deliver more than 65 nA. | ||
#** Only ran on amo since last evening. | #** Only ran on amo since last evening. | ||
| + | #** [https://logbooks.jlab.org/entry/3652433 Beam transmission look fine] | ||
| + | #*[https://logbooks.jlab.org/entry/3651965 Beam convergence] | ||
#*SSP problem | #*SSP problem | ||
#*[https://logbooks.jlab.org/entry/3651748], [https://logbooks.jlab.org/entry/3651772] Target control problem. [https://logbooks.jlab.org/entry/3651725 Target alarms were not enabled]. | #*[https://logbooks.jlab.org/entry/3651748], [https://logbooks.jlab.org/entry/3651772] Target control problem. [https://logbooks.jlab.org/entry/3651725 Target alarms were not enabled]. | ||
#*TOF RF status? | #*TOF RF status? | ||
| − | |||
#*Beam current can drift by have been drifting by up to 15 MeV the last 24h | #*Beam current can drift by have been drifting by up to 15 MeV the last 24h | ||
#Today's plan (changed this morning at the 8:00am MCC meeting) | #Today's plan (changed this morning at the 8:00am MCC meeting) | ||
| − | #*Beam scheduled for all day: DIRC commissioning+Thr. scan | + | #*Beam scheduled for all day: DIRC commissioning+Thr. scan (LED&dark runs done) + data taking overnight. |
#*[https://cebaf.jlab.org/files/ops/accboard/ MCC white board] | #*[https://cebaf.jlab.org/files/ops/accboard/ MCC white board] | ||
#*[https://halldweb.jlab.org/wiki/images/6/64/Spring19_week1.jpg This week time chart] | #*[https://halldweb.jlab.org/wiki/images/6/64/Spring19_week1.jpg This week time chart] | ||
Latest revision as of 07:17, 21 March 2019
Wednesday, Feb. 13 at 08:45
- Notes from the past 24 hours:
- Investigations of SSP problem
- 40 min access for SSP issue. Sergei also looked at TOF RF problem, and Lubomir worked on TRD.
- Some success in identifying issue and partly fixing it
- Only one instance of lifetime dropping to zero after the fix
- DIRC data taking.
- Investigations of SSP problem
- Issues
- Beam stirring issue. MCC cannot deliver more than 65 nA.
- Only ran on amo since last evening.
- Beam transmission look fine
- Beam convergence
- SSP problem
- [1], [2] Target control problem. Target alarms were not enabled.
- TOF RF status?
- Beam current can drift by have been drifting by up to 15 MeV the last 24h
- Beam stirring issue. MCC cannot deliver more than 65 nA.
- Today's plan (changed this morning at the 8:00am MCC meeting)
- Beam scheduled for all day: DIRC commissioning+Thr. scan (LED&dark runs done) + data taking overnight.
- MCC white board
- This week time chart
- Hall D white board
Tuesday, Feb. 12 at 08:45
- Notes from the past 24 hours:
- Beam off from 8am-3:24pm due to high beam current push for Hall C and then RF recovery. After than some bean during swing shift and good beam during owl.
- We did an access while beam was off:
- Acess for DIRC
- Beni Adjusted CDC gas flow.
- We did an access while beam was off:
- PS thr. scan finalized.
- DIRC production data taking over night
- Beam off from 8am-3:24pm due to high beam current push for Hall C and then RF recovery. After than some bean during swing shift and good beam during owl.
- Issues
- Current limited at 150 nA(diamond)/50nA(amo) due to DAQ problem below.
- [3], [4] ,[5] DAQ lifetime dropped to zero many times (I counted 8).
- TOF RF status?
- Beam energy can drift by 10+ MeV. Do we care?
- Today's plan (changed this morning at the 8:00am MCC meeting)
- Beam scheduled for all day: DIRC commissioning+Thr. scan+LED&dark runs+data taking overnight.
- MCC white board
- This week time chart
- Hall D white board
Monday, Feb. 11 at 08:45
- Notes from the past 72 hours:
- Beam restoration, system checkout and start of DIRC commissioning going well.
- Issues
- Harp at 5C11, Harp at 5C11b, Hall D harp+ fit, Coherent peak as of this morning Beam convergences probably bad. Do we want to address this?
- [6], [7] DAQ lifetime sometimes drops]
- TOF RF status?
- DIRC Commissioning with beam over weekend:
- Today's plan (changed this morning at the 8:00am MCC meeting)
- 8am-9:30am: High beam current push for Hall C. At best, low quality beam, very trippy. We maintain the planned access for Hall D
- 9:30am-??12:30pm-2:30pm?? RF recovery: No beam
- After RF recovery: spin dance for Hall B.
- Minimally invasive: 2 or 3 instances of 20 min beam off for spin angle rotation at the source. Beam available in between.
- Restart DIRC commissioning.
- MCC white board
- This week time chart
- Hall D white board
![[3]](https://logbooks.jlab.org/files/2019/02/3651425/90percent_then_0.png){kind=link}
![[4]](https://logbooks.jlab.org/files/2019/02/3651503/Screenshot%20from%202019-02-12%2001-52-42.png){kind=link}
![[5]](https://logbooks.jlab.org/files/2019/02/3651505/Screenshot%20from%202019-02-12%2001-55-41.png){kind=link}
