Revision as of 08:05, 7 October 2021

Thursday, October 7

In last 24 hours:
- Early Riser: https://logbooks.jlab.org/entry/3919395
- Owl summary: https://logbooks.jlab.org/entry/3919305
- Swing summary: https://logbooks.jlab.org/entry/3919178
- Day summary: https://logbooks.jlab.org/entry/3918973
- Production run started at 20:58
- 0.21B triggers with hot & cold Helium empty target cell
- 0.7B triggers with He target full
- Target cooled down and filled with liquid He4
- HallD cavity BPM calibration, https://logbooks.jlab.org/entry/3919129
- Gas bottle changed, https://logbooks.jlab.org/entry/3919183 (Elton)
Issues:
- Target software, https://logbooks.jlab.org/entry/3919168 (Carlin)
- Target, LH2 temperature interlock not changed, https://logbooks.jlab.org/entry/3918975 (Elton)
- LED skim, https://logbooks.jlab.org/entry/3918989
- Bleedthrough Different Beam structure after target change (Tuesday evening)
Plan:
- 200 nA CDC & FDC turn off (3 shifts)
- 100 nA CDC & FDC turn off (2 shifts)
- MCC will run the Moller at helicity flip rate for HallB which might disrupt HallD beam
- If Hall A is back online today (unlikely most probably tomorrow)
  - Check radiation
  - HARP scan
  - Bleedthrough run with 100 kHz random pulser, HallD laser turn off, and no beam for 40mn

@@ Line 19: / Line 19: @@
 #* 200 nA CDC & FDC turn off (3 shifts)
 #* 100 nA CDC & FDC turn off (2 shifts)
-#* If Hall A is back online today (possible but not expected)
+#* MCC will run the Moller at helicity flip rate for HallB which might disrupt HallD beam
+#* If Hall A is back online today (unlikely most probably tomorrow)
 #** Check radiation
 #** HARP scan
 #** Bleedthrough run with 100 kHz random pulser, HallD laser turn off, and no beam for 40mn