Difference between revisions of "2021-05-26"

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(Created page with "== Meeting Information == ==== Connecting ==== To connect to the meeting, please do the following: Time: Wednesday at 9:00 AM EST. # To join via a Web Browser, go to the pag...")
 
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<u>Short term schedule update:</u><br>
 
<u>Short term schedule update:</u><br>
 
<u>This week:</u>  
 
<u>This week:</u>  
* PEPPo magnet/Solenoid installed on 80/20 (Completed)
+
* Area up to transition after solenoid under vacuum. Ready for RGA leak check.
* Alignment of big pieces (solenoid, viewer crosses, FC4) completed to ~100 micron tolerances per crew. Still awaiting report. (Completed)
+
* Downstream viewer / faraday cup assembly under vacuum. Ready for RGA leak check.
* Area up to transition after solenoid under vacuum; valve/bellow/bpm/spool installed. Pumping down and checking RGA now, but tentatively looks good.
+
* Second 4 5/8" BPM stolen from elevated line for installation.
* Install 4 5/8" BPMs after insertion measurements completed; 1 found bad - stealing another. Installing good one to d.s. cross today (4/19).
+
* Roof tiles off for HDIce (5/24), Dilution refrigerator craned out (5/25), and then roof tiles replaced again (5/26).  
* Downstream viewer / FC cross assemblies nearly ready to leak check.
+
* Spool pieces / nipples being fabricated
  
 
*Gun work progressing well:
 
*Gun work progressing well:
*# [https://logbooks.jlab.org/entry/3876048 Sb evaporation source installed in deposition chamber]
+
*# HV chamber evaluation - plan to bake to evaporate lubricant & pump it off, install photocathode, and bake again.
*# [https://logbooks.jlab.org/entry/3876613 R28 insulator on cathode found punctured on removal] Lubricant from HV cable got into gun through insulator, path forward under assessment likely [https://logbooks.jlab.org/entry/3876887 related] to [https://logbooks.jlab.org/entry/3871018 gun HV] [https://logbooks.jlab.org/entry/3871040 trip on 3/25]
+
 
*# [https://wiki.jlab.org/ciswiki/index.php/Spring_2021_-_Rebuilding_Photogun Gun rebuild schedule]
 
*# [https://wiki.jlab.org/ciswiki/index.php/Spring_2021_-_Rebuilding_Photogun Gun rebuild schedule]
 
*# Minor SF6 leak in HV chamber identified; repair later...
 
*# Minor SF6 leak in HV chamber identified; repair later...
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<u>Next Week:</u>
 
<u>Next Week:</u>
* Roof tiles off for HDIce (5/24), Dilution refrigerator craned out (5/25), and then roof tiles replaced again (5/26). SRF (Fisher) will be relocating material on roof to accommodate.
 
* Have spool pieces made and nipples welded
 
 
* Mount bottle rack in Labyrinth; remove gas bottles to rack.
 
* Mount bottle rack in Labyrinth; remove gas bottles to rack.
 +
* Wastewater experiment line fully under vacuum (with flange in place of the thin window).
 +
* Install target mechanism
 +
* Build 80/20 support structure; Pb table components awaiting delivery.
 +
* Unistrut mounting for cables - Neal will do when available
 +
* Break vacuum in FC3 region
 +
* Ready to install Al base plates for FC3 region rework as well as solenoid stand. FC3 plate awaiting machining.
  
  
 
<u>2 weeks:</u>
 
<u>2 weeks:</u>
*Wastewater experiment line fully under vacuum (with flange in place of the thin window).
 
*Install target mechanism
 
*Build 80/20 support structure; add mounting plates/brackets/etc. (Pb table components awaiting delivery)
 
 
*Pull Heliax from Spectrum analyzer/Control room >> Buncher
 
*Pull Heliax from Spectrum analyzer/Control room >> Buncher
*Unistrut mounting for cables - Neal will do when available
 
 
*4th terminal system in Control room under assembly/rebuild
 
*4th terminal system in Control room under assembly/rebuild
 
*Break vacuum in FC3 region
 
*Ready to install Al base plates for FC3 region rework as well as solenoid stand. FC3 plate awaiting machining.
 
 
*[https://wiki.jlab.org/ciswiki/index.php/To-do_list Items from To-do list...]
 
*[https://wiki.jlab.org/ciswiki/index.php/To-do_list Items from To-do list...]
  
 
<u>Engineering</u>
 
<u>Engineering</u>
*Insertion measurements completed on 4 5/8" BPMs
 
*Leo dropped VCG off for installation today.
 
 
 
Other business
 
Other business
  

Revision as of 09:52, 20 May 2021

Meeting Information

Connecting

To connect to the meeting, please do the following: Time: Wednesday at 9:00 AM EST.

  1. To join via a Web Browser, go to the page [1] https://bluejeans.com/946721076.
  2. To join via Polycom room system go to the IP Address: 199.48.152.152 (bjn.vc) and enter the meeting ID: 946721076.
  3. To join via phone, use one of the following numbers and the Conference ID: 946721076.
    • Dial Either +1 408 740 7256 or +1 888 240 2560 for US or Canada

Agenda

Schedule

Long Term Schedule: Gantt (Outstanding tasks)

  1. Supplementary Shielding Installation: Mid-June
  2. Beamline Commissioning / Test Plans / Shielding Verification
  3. 7/26/21 Start Hot Check-out
  4. Commission new beam line and execute experiment
  5. Science!!!

New items for discussion:

Short term schedule update:
This week:

  • Area up to transition after solenoid under vacuum. Ready for RGA leak check.
  • Downstream viewer / faraday cup assembly under vacuum. Ready for RGA leak check.
  • Second 4 5/8" BPM stolen from elevated line for installation.
  • Roof tiles off for HDIce (5/24), Dilution refrigerator craned out (5/25), and then roof tiles replaced again (5/26).
  • Spool pieces / nipples being fabricated
  • Gun work progressing well:
    1. HV chamber evaluation - plan to bake to evaporate lubricant & pump it off, install photocathode, and bake again.
    2. Gun rebuild schedule
    3. Minor SF6 leak in HV chamber identified; repair later...


Next Week:

  • Mount bottle rack in Labyrinth; remove gas bottles to rack.
  • Wastewater experiment line fully under vacuum (with flange in place of the thin window).
  • Install target mechanism
  • Build 80/20 support structure; Pb table components awaiting delivery.
  • Unistrut mounting for cables - Neal will do when available
  • Break vacuum in FC3 region
  • Ready to install Al base plates for FC3 region rework as well as solenoid stand. FC3 plate awaiting machining.


2 weeks:

  • Pull Heliax from Spectrum analyzer/Control room >> Buncher
  • 4th terminal system in Control room under assembly/rebuild
  • Items from To-do list...

Engineering Other business

Reports on Open Action Items:

Action Items:

  • Formal run plan (McCaughan)

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