[Hallc_running] [New Logentry] Status Update

[pooser at jlab.org]

Logentry Text:
--
We began yesterday with production running with the SHMS at -2.0 GeV and 39 degrees, and with the HMS at -1.35 GeV and 59 degrees.  At ~6:10 pm the SHMS momentum was reduced to -1.6 GeV and we proceeded to collect production data for the remainder of swing and owl shift.

MCC attempted to deliver 60+ uA congruent with Hall A at 22 uA however, this was unstable and they quickly lowered us to 55 uA which they were able to maintain for the majority of the night (https://logbooks.jlab.org/entry/3540743).  At ~9:00 pm a magnet over temperature alarm in arc 8 (https://logbooks.jlab.org/entry/3540504) caused a period of down time which lasted for ~1hr. 

Currently we have collected ~91% of the 10 cm Al dummy data, ~51% of the LD2 data, and 100% of the LH2 data for the SHMS kinematic point of -1.6 GeV at 39 degrees.  For the HMS at -1.35 GeV and 59 degrees we have collected ~75% of the LH2 data, 100% of the LD2 and 10 cm Al dummy data.  Beam 

Work to be completed if ~1 hr access is possible during normal business hours:
Andy Kenyon: address an issue with the cold return valve 13 on HMS Q1
Tony Delacruz: swap out the CW dump viewer camera

Special notices in effect for shift crews:
Recovering the HMS DAQ: https://hallcweb.jlab.org/wiki/index.php/Hall-C_HMS_DAQ_Failure_Modes
Trouble shooting HMS Q2 power supply: https://logbooks.jlab.org/entry/3537306
TO Instructions for LH2 <--> LD2 switches : https://logbooks.jlab.org/entry/3534487

We will meet today in 200C at 1:30 pm (second floor of the counting house)
Link: https://bluejeans.com/543903672
Connecting directly from a room system?
1) Dial: 199.48.152.152 or bjn.vc
2) Enter Meeting ID: 543 903 672
Just want to dial in on your phone?
1) Direct-dial with my iPhone or
+1.408.740.7256 (United States)
+1.888.240.2560 (US Toll Free)
+1.408.317.9253 (Alternate number)
(Global Numbers)
2) Enter Meeting ID: 543 903 672
3) Press #

---

This is a plain text email for clients that cannot display HTML.  The full logentry can be found online at https://logbooks.jlab.org/entry/3540769
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/hallc_running/attachments/20180301/9a3abb74/attachment-0001.html>