Revision as of 09:26, 12 November 2021

Friday November 12

Last 24h:
- recorded 2.2B triggers on diamond
- improved convergence: before and after
- ... but the transmission went down by ~15% [1], [2]
Issues:
- bad f250 in TAGH [3] - no longer an issue (Sasha power-cycled the crate)
- transmission - Hovanes will do AC scan when the beam is back after 10am
Plan:
- Down starting at 10am: for 1+ hours (Hall A changes to 4 passes)
- Continue production at 150nA on diamond
Analysis update

Last 24h:
- Down till 3:30pm:
  - 10 FCAL bases replaced [4]
  - CDC/FDC? gas mix alarm [5]
- Harp scan [6]
- Recorded 800M+ events with diamond/amo (LHe4 target)
- lock on AC disabled this morning [7]
Issues:
- bad f250 in TAGH [8]
Plan:
- Continue production at 150nA on diamond w/o AMO (next AMO run Nov 14)
- nudge the coherent peak every time when changing 0/90 to 45/125 and PERP to PARA
- Expect 1+ hours down when Hall A changes to 4 passes - not clear when

@@ Line 3: / Line 3: @@
 #* recorded 2.2B triggers on diamond
 #* improved convergence: [https://logbooks.jlab.org/entry/3940109 before] and [https://logbooks.jlab.org/entry/3940868 after]
-#* ... but the transmission went down by ~15% [https://logbooks.jlab.org/entry/3940921]
+#* ... but the transmission went down by ~15% [https://logbooks.jlab.org/entry/3940921], [https://logbooks.jlab.org/entry/3941436]
 #Issues:
-#* bad f250 in TAGH [https://logbooks.jlab.org/entry/3940210]
+#* bad f250 in TAGH [https://logbooks.jlab.org/entry/3940210] - no longer an issue (Sasha power-cycled the crate)
+#* transmission - Hovanes will do AC scan when the beam is back after 10am
 # [https://halldweb.jlab.org/primexd/run_plan/Run_Plan_Fall_2021.pdf Plan:]
-#* Continue production at 150nA on diamond w/o AMO (next AMO run Nov 14)
+#* Down starting at 10am: for 1+ hours (Hall A changes to 4 passes)
-#* Expect 1+ hours down when Hall A changes to 4 passes - not clear when
+#* Continue production at 150nA on diamond
+# Analysis update
 =Thursday November 11=