Run Meeting: March 4th, 2019

From Hall A Wiki
Revision as of 15:44, 4 March 2019 by Jlzhang (Talk | contribs) (→‎Status)

Jump to: navigation, search

Back to:

Main Page
Daily Run Meetings
halog

3:30PM Run Meeting, Counting house meeting room (200C)

RC: Jinlong Zhang

Status

  • Beam down from Friday night to Saturday later afternoon
- Friday ~22:00: Beam down due to the cavity/vacuum (1L25-8/1L26) issue at north linac;
- Saturday 18:00: Beam restored;
- 18:00-19:00: escorted access for VDC Left U2 cable checking );
- Back to production.
  • Productively collecting data over after the downtime. Total charge 2.3A from Sat 19:30 to Today 6:00.
  • Yesterday ~21:53: Bogdan increased the HV for Left VDC, from -3500 to -3600. Efficiency improved.
  • Beam study this morning. We were taking production data during that.
  • Links to the shift summaries:
- Mar 1 Swing: https://logbooks.jlab.org/entry/3661962
- Mar 2 Owl: https://logbooks.jlab.org/entry/3662024
- Mar 2 Day: https://logbooks.jlab.org/entry/3662128
- Mar 2 Swing: https://logbooks.jlab.org/entry/3662283
- Mar 3 Owl: https://logbooks.jlab.org/entry/3662400
- Mar 3 Day: https://logbooks.jlab.org/entry/3662530
- Mar 3 Swing: https://logbooks.jlab.org/entry/3662666
- Mar 4 Owl: https://logbooks.jlab.org/entry/3662809

So Far

Taking production data, Tungsten 2.8% @30uA.

Plan

Continue with production on tungsten until tomorrow ~8:30.

Beam energy reduction: from 2.221 GeV to 2.139 GeV (~4%):
The change with take place tomorrow and is expected to be completed during tomorrow swing.
Kinematic setting will be accordingly changed.

The RF recovery was planned from 8:30 to15:00 tomorrow. This will be covered by the energy reduction setup.

The Hall will be in controlled access for tomorrow day shift.
- Switch the right arm polarity, from positive to negative, for the optics data.
- Roman: need access to Hall A tomorrow to reboot Moller DAQ crate (~10 min) and to check Left HRS VDC realy box (1-2 hours).
- Doug will be available to provide the Hall walk-through training tomorrow.

Labyrinth network switches? Now or after APEX?

Slides/Links

MCC scheduling Whiteboard: http://accboard.acc.jlab.org/

APEX wiki page: https://hallaweb.jlab.org/wiki/index.php/APEX

Bluejeans connection information

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

Slides/Links

MCC scheduling Whiteboard: http://accboard.acc.jlab.org/

APEX wiki page: https://hallaweb.jlab.org/wiki/index.php/APEX

Bluejeans connection information

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

Retrieved from "https://hallaweb.jlab.org/wiki/index.php?title=Run_Meeting:_March_4th,_2019&oldid=36504"