Revision as of 07:29, 21 October 2021

Thursday, October 21

Last 24h:
- No beam from 5:20pm Tuesday until 2am Thurs due to LCW/power problem
- Work done during the access:
  - magnetic field measurements around CCAL
  - 15 FCAL bases replaced and re-terminated one cable
  - faulty FDC chiller replaced
  - rebalanced the server power load on rack 13
  - ? position survey CCAL ?
  - ? correct shielding at the left (downstream) PS arm ?
Remaining issues:
- Tagger hodoscope time shifts
- communication with accel. w.r.t. tagger magnet - Paul Vasilauskis (Ops group leader): "I am putting out to my staff to contact the hall if they do need to touch the magnet and am looking into adding wording to the magnet screens"
- BCAL noise at 10 o'clock
- Bleedthrough
Plan:
- When the beam is back continue production at 200nA after the usual checks (radiation levels & harp scans)
- Continue running with the solenoid on & target full until Friday or later
- Pass change possible Friday or Saturday
- Expect some downtime Monday daytime for VIP tour

@@ Line 1: / Line 1: @@
 =Thursday, October 21=
 # Last 24h:
-#* No beam from 5:20pm Tuesday until ??? due to LCW/power problem
+#* No beam from 5:20pm Tuesday until 2am Thurs due to LCW/power problem
 #* Work done during the access:
-#** position survey CCAL - DOESN'T require RadCon survey
-#** correct shielding  at the left (downstream) PS arm
 #** [https://logbooks.jlab.org/entry/3928644 magnetic field measurements around CCAL]
 #** [https://logbooks.jlab.org/entry/3928669 15 FCAL bases replaced] and [https://logbooks.jlab.org/entry/3928811 re-terminated one cable]
 #** [https://logbooks.jlab.org/entry/3928624 faulty FDC chiller replaced]
 #** [https://logbooks.jlab.org/entry/3928742 rebalanced the server power load on rack 13]
+#** ? position survey CCAL ?
+#** ? correct shielding  at the left (downstream) PS arm ?
 # Remaining issues:
 #* [https://logbooks.jlab.org/entry/3929404 Tagger hodoscope time shifts]