Difference between revisions of "November 16, 2022 FCAL Insert Installation Meeting"

From GlueXWiki
Jump to: navigation, search
(Created page with "== Meeting Time and Place == Wednesday November 16, 2022 10am At Jefferson Lab, Hall D Counting House and on Teams == Agenda == * Minutes from last meeting https://halldweb....")
 
(Agenda)
Line 7: Line 7:
 
* Minutes from last meeting https://halldweb.jlab.org/wiki/index.php/November_02,_2022_FCAL_Insert_Installation_Meeting
 
* Minutes from last meeting https://halldweb.jlab.org/wiki/index.php/November_02,_2022_FCAL_Insert_Installation_Meeting
 
* Go through updated Gant chart
 
* Go through updated Gant chart
** What inspections/marking/labeling needed prior to glass block removal?
+
** What inspections/marking/labeling/testing needed prior to glass block removal?
 
** Surveys before removal
 
** Surveys before removal
 
* Discuss Lead Glass and crystal module removal/install [https://halldweb.jlab.org/wiki/index.php/FCAL_Installation] - Sasha
 
* Discuss Lead Glass and crystal module removal/install [https://halldweb.jlab.org/wiki/index.php/FCAL_Installation] - Sasha
 
* Manpower and task division [https://halldweb.jlab.org/wiki/index.php/FCAL_Installation] - Sasha
 
* Manpower and task division [https://halldweb.jlab.org/wiki/index.php/FCAL_Installation] - Sasha
* Initial testing of modules before removal - Mark D.
+
* Cable update
* Revisited removal of darkroom -
+
** All cables need to be removed from darkroom to be able to install new detector
+
** Maybe able to crane frame off platform partially assemble
+
** Rework for patch panels
+
* Cable discussion fruitful
+
** Option D to move cables from inner 400 cables to adjacent crate
+
** Remove 2 crates and move to new racks
+
** Abandon 200 cables
+
** Patch panels worked out, 2 HV and 2 LV north and south side, 1 signal feedthrough plate downstream wall
+
** HV and LV cable length = 20 ft
+
** Signal cable length = 16 ft
+
** Cable trays for Signal all going N-S under platform
+
** HV and LV cables al come from underneath also
+
 
* Monitoring system discussion  
 
* Monitoring system discussion  
 
* Assembly in ESB
 
* Assembly in ESB
Line 31: Line 18:
 
[[image:JBweld_cooling_test.jpeg|thumb]]
 
[[image:JBweld_cooling_test.jpeg|thumb]]
 
[[image:Glass_module_steps.jpeg|thumb]]
 
[[image:Glass_module_steps.jpeg|thumb]]
 
  
 
== Minutes ==
 
== Minutes ==

Revision as of 08:43, 15 November 2022

Meeting Time and Place

Wednesday November 16, 2022 10am At Jefferson Lab, Hall D Counting House and on Teams

Agenda

Both step.jpeg
JBweld cooling test.jpeg
Glass module steps.jpeg

Minutes

  • Reviewed minutes from last meeting
  • Looked at Sasha's installation wiki page
    • Showed different possible damage to wrapping of existing lead glass modules
    • Is aluminum being stuck to module surface a performance issue (light yield)?
      • Really no way to test now
      • Need to decide threshold for re-wrapping
    • Some inspection/labelling needed prior to unstacking of blocks
    • Sasha proposed that him and Arshak inspect each module after removal to decide on action to be taken -
    • Mark and Malte need to be in loop for base and pmt changes
      • Possibly test light yield on first 100
    • Malte asked who unstacked the original modules from BNL and what were the issues
    • Looks like we will have about 500 good PMT spares
    • Sasha presented manpower requirements
      • would need 2 students for 30 weeks to re-wrap all old modules
      • Total 11 students for 3 months will be needed for project (Eugene to check budgets)
      • JLAB folks responsible for unstacking modules - Hall D Techs/DSG?
      • Sasha/Arshak would train students to do module refurb
      • Students would label and bundle cables
      • JLAB tech staff handle structure, darkroom, cable trays, racks
      • JLAB electronics group handle crate installation and cabling possibly with help from DSG
      • Students would handle moving existing cables to adjacent crates on north and south racks
      • Need to get a final list of universities supplying students
      • Maybe best to downgrade the hall from RAD worker 1 to Gert only
    • Sasha mentioned the need to re-strap some existing 25 micron brass strap crystal modules
    • Need to start developing procedures for all aspects of the project
    • Need to define workstations needed - add to Sasha's table and develop a layout
  • Need to have electric power added to south side of FCAL platform
  • Need to update strawman schedule with more detail including resources
  • Lead glass acrylic sheet same design as original - need to remake panes for new geometry

Action Items

  • Develop required work stations needed and add to table - Sasha
  • Develop hall layout based on work stations - Tim/Stephanie
  • Update Gant chart with more detail and resources - Scot/Tim
  • Check to see if hall can be downgraded to a Radiologically Controlled area - Tim
  • Start developing procedures - Sasha - Tim
  • Determine what universities/students will be available - Sasha
  • Have electricians look at bringing power to new racks on south side - Tim
  • Determine if we have budget for students - Eugene
  • Design patch panels - Chris S./Stephanie