Difference between revisions of "June 18, 2022"

From HallCWiki
Jump to navigationJump to search
 
(One intermediate revision by the same user not shown)
Line 44: Line 44:
  
 
= Current Run Plan =
 
= Current Run Plan =
−
[https://redmine.jlab.org/attachments/download/1480/10_549_GeV_Runplan.pdf pionLT Summer 2022 Run Plan]  
+
[https://redmine.jlab.org/attachments/download/1480/10_549_GeV_Runplan.pdf pionLT Summer 2022 Run Plan]  <br>
−
* Do single  Heep coin setting (p. 8)  (<span style="color:darkgreen"> '''DONE''' </span>)
+
[https://hallcweb.jlab.org/wiki/index.php/PionLT_2022_Physics_Status Physics Status]
−
Begin production physics @ 10.549 GeV beam energy:
 
−
Setting #1: Q2=3.85, W=2.02, x=0.55, high epsilon | HMS angle = 13.31 deg, HMS P = -6.792 GeV/c,  SHMS P = +3.493 GeV/c
 
−
* LH2 SHMS Right    | SHMS Angle = 19.65 deg (p. 9-11) | goal 81,000 |  total counts: 85,472  | (<span style="color:darkgreen"> '''DONE''' </span>) Jun 18 Day
 
−
* LH2 SHMS Center | SHMS Angle = 21.65 deg ( p.12 )    | goal 81,000 |  total counts: ??          | (<span style="color:orange"> '''IN-PROGRESS''' </span>)
 
−
* LH2 SHMS Left      | SHMS Angle = 23.65 deg ( p.13 )  | goal 81,000 |  total counts: ??          | (<span style="color:red"> '''PENDING''' </span>)
 
−
Setting #2: Q2=2.73, W=2.63, x=0.31, high epsilon | HMS angle = 12.04 deg, HMS P = -5.878 GeV/c,  SHMS P = +4.605 GeV/c
 
−
* LH2 SHMS Left    | SHMS Angle = 16.33 deg (p. 14-15) | goal 145,000 |  total counts: ??          | (<span style="color:red"> '''PENDING''' </span>)
 
−
* LH2 SHMS Center | SHMS Angle = 14.33 deg ( p.16 )    | goal 145,000 | total counts: ??            | (<span style="color:red"> '''PENDING''' </span>)
 
−
* LH2 SHMS Right    | SHMS Angle = 12.33 deg ( p.17 )  | goal 145,000 |  total counts: ??          | (<span style="color:red"> '''PENDING''' </span>)
 
−
Setting #3: Q2=3.85, W=2.62, x=0.39, high epsilon | HMS angle = 15.06 deg, HMS P = -5.309 GeV/c,  SHMS P = +5.127 GeV/c
 
−
* LH2 SHMS Right    | SHMS Angle = 12.28 deg (p.18-19 ) | goal 61,000 |  total counts: ??          | (<span style="color:red"> '''PENDING''' </span>)
 
−
* LD2 SHMS Right    | SHMS Angle = 12.28 deg ( p.20 )    | goal 61,000 |  total counts: ??            | (<span style="color:red"> '''PENDING''' </span>)
 
−
* LD2 SHMS Center  | SHMS Angle = 14.28 deg ( p.21-22 )  | goal 61,000 |  total counts: ??          | (<span style="color:red"> '''PENDING''' </span>)
 
−
* LH2 SHMS Center    | SHMS Angle = 14.28 deg (p.23 ) | goal 61,000 |  total counts: ??          | (<span style="color:red"> '''PENDING''' </span>) -> NO DUMMY RUN??
 
−
* LH2 SHMS Left      | SHMS Angle = 16.28 deg (p.24 ) | goal 61,000 |  total counts: ??          | (<span style="color:red"> '''PENDING''' </span>)
 
−
* LD2 SHMS Left      | SHMS Angle = 16.28 deg (p.25 ) | goal 61,000 |  total counts: ??          | (<span style="color:red"> '''PENDING''' </span>)
 
−
Setting #4: Q2=6.00, W=2.40, x=0.55, high epsilon | HMS angle = 19.92 deg, HMS P = -4.752 GeV/c,  SHMS P = +5.512 GeV/c
 
−
* LD2 SHMS Left      | SHMS Angle = 16.91 deg (p.26-27 ) | goal 30,000 |  total counts: ??          | (<span style="color:red"> '''PENDING''' </span>)
 
−
* LH2 SHMS Left      | SHMS Angle = 16.91 deg (p.28 ) | goal 30,000 |  total counts: ??          | (<span style="color:red"> '''PENDING''' </span>)
 
−
* LH2 SHMS Center      | SHMS Angle = 14.91 deg (p.29 ) | goal 30,000 |  total counts: ??          | (<span style="color:red"> '''PENDING''' </span>)
 
−
* LD2 SHMS Center      | SHMS Angle = 14.91 deg (p.30 ) | goal 30,000 |  total counts: ??          | (<span style="color:red"> '''PENDING''' </span>) --> TYPO in runplan: should be 30,000 coin., NO DUMMY RUN ??
 
−
* LD2 SHMS Right      | SHMS Angle = 12.91 deg (p.31 ) | goal 30,000 |  total counts: ??          | (<span style="color:red"> '''PENDING''' </span>)
 
−
* LH2 SHMS Right      | SHMS Angle = 12.91 deg (p.32 ) | goal 30,000 |  total counts: ??          | (<span style="color:red"> '''PENDING''' </span>)
 
−
Setting #5: Q2=2.45, W=3.20, x=0.21, high epsilon | HMS angle = 13.41 deg, HMS P = -4.256 GeV/c,  SHMS P = +6.265 GeV/c
 
−
* LH2 SHMS Left      | SHMS Angle = 10.76 deg (p.33-34 ) | goal 92,000 |  total counts: ??          | (<span style="color:red"> '''PENDING''' </span>)
 
−
* LH2 SHMS Center  | SHMS Angle = 8.76 deg (p.35 ) | goal 92,000 |  total counts: ??          | (<span style="color:red"> '''PENDING''' </span>)
 
−
. . . need to continue to add more stuff here .. . .
 
  
 
= Notices in Effect for Shift Crew =
 
= Notices in Effect for Shift Crew =

Latest revision as of 20:45, 18 June 2022

RC Meeting Information

RC Daily Meetings are at 11:00 (am) via Zoom and in person in the counting house meeting room (2nd floor)

  • Zoom remote connection information:
 Join ZoomGov Meeting
 https://jlab-org.zoomgov.com/j/1607100885?pwd=ZFBsRTFsYm5Zb0laZ0tyZXNjcEE0QT09
 Meeting ID: 160 710 0885
 Passcode: 595071
 One tap mobile
 +16692545252,,1607100885# US (San Jose)
 +16468287666,,1607100885# US (New York)
 Dial by your location
       +1 669 254 5252 US (San Jose)
       +1 646 828 7666 US (New York)
       +1 669 216 1590 US (San Jose)
       +1 551 285 1373 US
       833 568 8864 US Toll-free
 Meeting ID: 160 710 0885
 Find your local number: https://jlab-org.zoomgov.com/u/ab2CekLXgQ

Useful Links

Current Status

  • Jun 17 - Swing (yesterday)
    • pionLT optics checkout completed (Jacob verified 200 counts / hole / foil)
  • Jun 18 - Owl (today)
    • coincidence trigger checkout was completed during late Jun 17 Swing / Early Owl shift --> https://logbooks.jlab.org/entry/4004019
      • During early Owl, shift crew noticed pTRIG5 (coin. trigger HMS EL-REAL + SHMS 3/4) was missing. This was determined by Brad to be a faulty delay module and module was replaced --> https://logbooks.jlab.org/entry/4004101
      • There was also a report of an issue with TDC errors in the replay, but these were found to be an insignificant fraction, and most likely due to a noise burst which caused the TDCs to reject hits due to exceeding its buffer --> https://logbooks.jlab.org/entry/4004102
  • Jun 18 - Day (today)
    • H(e,e'p) coincidence, which needed ~10,000 counts, but decided to stop earlier to take dummy data. As of 6 am they had ~5400 events.
      • Jacob noticed a discrepancy between estimates and reality in the SHMS singles and coincidence rates for H(e,e'p) --> https://logbooks.jlab.org/entry/4004139 . But this discrepancy seems to have been attributed to a too tight missing mass cut, as D. Gaskell explained to me.

Current Run Plan

pionLT Summer 2022 Run Plan
Physics Status

Notices in Effect for Shift Crew

  • Please pro-rate ABU for max current limit in run plan (uA) in beam time accounting. For example, if we receive 15 uA instead of the max_current_limit in the run plan, then the ABU should be: ABU_prorated = 15/(max current limit) * ABU
  • Message from Ole Hansen: There will be a brief (<30min) outage of the Hall A and Hall C /work servers on Tuesday (6/21). This will happen during the workday already instead of the usual 5pm-10pm time slot for monthly IT maintenance. Please plan accordingly, i.e. don't start any mass replays ;-)
  • Check the HMS/SHMS rates for when production starts, since for Heep coin. production SHMS saw higher rates. Make sure shift crew takes snapshot of scalers at every setting

Current Issues

Planned Accesses to the Hall

  • During the next accelerator maintenance period (Wed Jun 22):
    • S. Lassiter needs to put crush washers in LCW filters, so we may see a little bit of water by the HMS boogie for now, until he can put the washers next week, during maintenance period HMS Dipole LCW ( PENDING )
    • Hall C Expert needs to check SHMS ROC 4 Slot 9 Channel 0 FADC for potentially loose connection, as Column 5, Row 1 block appears to have no occupancy. SHMS Cal Occupancy ( PENDING )
    • Xinzhan Bai request to go to restricted access to quickly swap MPD electronics out and check signals (~ 30 min.), whenever there is extended down (most likely during next accelerator maintenance period) : Contact: xbai@jlab.org, cell: (434) 422-2809 ( PENDING )
    • Hall C Expert should check HMS ROC 3 (in HMS Hut) pertaining to this log-entry: ROC 3 TDC FIFO Error ( PENDING )

Planned Accelerator Configuration Changes

Special Requests

  • Mark Jones would like to take HMS optics data with a 4x4 mm^2 raster at some point (when HMS is at a lower momentum, i.e., current setting) for checks. ( DONE )
Retrieved from "https://hallcweb-2024.jlab.org/wiki/index.php?title=June_18,_2022&oldid=19793"