Difference between revisions of "Run Planning Meeting Notes, June 30 - July 06, 2022"
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[https://docs.google.com/spreadsheets/d/1sdluzy7p5vnlhw9AWJHBrYbXKTBet45o4den4zWX9dc/edit#gid=1855021251 Spreadsheet with list of runs] | [https://docs.google.com/spreadsheets/d/1sdluzy7p5vnlhw9AWJHBrYbXKTBet45o4den4zWX9dc/edit#gid=1855021251 Spreadsheet with list of runs] | ||
| − | =Thursday June 30= | + | = Friday July 1 = |
| + | === Past 24 hours === | ||
| + | |||
| + | === Shift reports === | ||
| + | *[https://logbooks.jlab.org/entry/4009095 day shift summary] | ||
| + | * | ||
| + | * | ||
| + | * | ||
| + | |||
| + | === Reports === | ||
| + | * low invariant mass +/- pair tracks are indeed leptons: [https://logbooks.jlab.org/entry/4009188 E/p vs Mass] | ||
| + | === Issues === | ||
| + | === Plans === | ||
| + | |||
| + | = Thursday June 30= | ||
=== Past 24 hours === | === Past 24 hours === | ||
Overarching theme of the past 24 hours: "herding cats" | Overarching theme of the past 24 hours: "herding cats" | ||
| Line 53: | Line 67: | ||
* CPP/NPP: TBD | * CPP/NPP: TBD | ||
** first do harp scans when beam comes back | ** first do harp scans when beam comes back | ||
| − | ** do first an Amo run using goniometer Al radiator. | + | ** do first an Amo run using goniometer Al radiator if that does not work due to ion chamber try target ladder Al radiator. |
| + | ** continue nominal production data taking on diamond. | ||
Revision as of 17:14, 30 June 2022
Back to Run Coordination Meetings:Summer2022
Meeting are via ZoomGov: connect (Meeting ID: 160 199 0060 / Passcode 8394)
Hall D counting room white board
Contents
Friday July 1
Past 24 hours
Shift reports
Reports
- low invariant mass +/- pair tracks are indeed leptons: E/p vs Mass
Issues
Plans
Thursday June 30
Past 24 hours
Overarching theme of the past 24 hours: "herding cats"
- no beam during the day, machine optimization to deliver high current beam to HallC (unsuccessful)
- beam back around 5:30pm
- did first two Harp scans with HallD laser on and off while hallC had around 17uA of beam
- Scan One with our beam
- Scan Two only HallC beam
- Scan results at collimator
- peak to base line of the harp peaks is about 100 (as in previous scans)
- OLD harp scan from Dec 1 2021 and Dec 2 2021
- general beam conditions are rather unstable. beam strip chart
- continue data taking over night
- DAQ issues again with life time dropping to 60%. Shift crew called Sergey.
- found problem with Slot 3 fiber 7 having trouble (I think this is seen in roctrig1?)
- after Sergey's intervention DAQ came slowly back to "normal"
- beam conditions are very unstable over night
- Loss of NMR comm in Tagger Manet
- again very bad life time 10% only! (stopped run 100778) but also beam lost beam at the same time.
- stopping and restarting the DAQ with new run 100779 cured the issue of low lifetime, but soon beam was lost again.
- beam on and off for some time, finally off with problems in several cavities one whole (1L15) zone no beam for several hours.
Shift reports
Reports
- invariant mass of pi+pi- tracks: Vertex VS M(pi+pi-)
- follow up Energy, Trigger Bit
Issues
- HallD beam conditions(e,gamma): quality/stability
- Tuned beam and CW beam to hallD looks different ELOG entry
- HallC beam high current not reached, current reached 30uA
Plans
- MCC: Machine needs to replace "breaker" in 1L15
- last time this work took about 6 hours
- NL and SL to be taken down
- take this opportunity to assess relocation of some BLM in the machine
- expect beam no earlier then swing shift.
- CPP/NPP: TBD
- first do harp scans when beam comes back
- do first an Amo run using goniometer Al radiator if that does not work due to ion chamber try target ladder Al radiator.
- continue nominal production data taking on diamond.
