[Halla_running] [Revised Logentry] Daily update

[sanghwa at jlab.org]

Logentry Text:
--
Hall Status:
Configuration: 
- LHRS polarity: Now it's negative 
- RHRS polarity: It's now set to positive. Both arms are set for the production polarity settings. 
- Septum and corrector (APEX correctors) polarity: changed for LHRS (neg), RHRS (pos). 
- Sieve slits are both in OUT position now (for the coincidence time check)

Special task:
- Beam centering redone with tune mode beam (no raster). Found three wires (https://logbooks.jlab.org/entry/3652177).
- Nominal beam position is updated to X: 2.2, Y: 1.8

Data taking:
- SciFi test: https://logbooks.jlab.org/entry/3652013
- LHRS optics data taken with Bogdan wire (two wires) and Optics targets
- Coincidence timing work in progress

Notes/Fixes:
- Had a problem with the Septum (remote) polarity control. Polarity change button in the GUI does not work. Septum polarity change is done by entering positive/negative current values (https://logbooks.jlab.org/entry/3651980)
- The polarity change for the correctors can only be done in the hall. We had another controlled access for this around 5pm.
- RHRS dipole ramping rate 

Accelerator:
- Had a period of unstable beam delivery during the swing shift (few hours)
- No planned Monday beam study next week at this moment
- RF recovery on Tuesday

------------------------------------------
We will have a daily meeting at 3:30 in the 2nd floor counting house conference room. 

To join the Meeting: https://bluejeans.com/256205934

To join via Room System: Video Conferencing System: bjn.vc -or-199.48.152.152 Meeting ID : 256205934

To join via phone : 1) Dial:

  +1.408.740.7256 (United States)
  +1.888.240.2560 (US Toll Free)
  +1.408.317.9253 (Alternate number)
  (see all numbers - http://bluejeans.com/numbers)
2) Enter Conference ID : 256205934


---

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/3652606
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/halla_running/attachments/20190213/296a3182/attachment.html>