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

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* 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?
+
** [[Media:FCAL2_schedule_v2a.pdf]]
 +
** What inspections/marking/labeling/testing needed prior to glass block removal?
 
** Surveys before removal
 
** Surveys before removal
 +
** Who is responsible for what?
 
* 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 [[Media:FCAL2_lv,board.pdf]]
−
* 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
−
*  [[Media:FCAL2_strawman_schedule.pdf]]
+
*   
 
[[image:Both_step.jpeg|thumb]]
 
[[image:Both_step.jpeg|thumb]]
 
[[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 ==
−
* Reviewed minutes from last meeting
+
* Discussed minutes from last meeting
−
* Looked at Sasha's installation wiki page
+
** what inspections/marking/labeling are needed prior to removal of lead glass blocks?
−
** Showed different possible damage to wrapping of existing lead glass modules
+
*** Malte to come up with a written procedure of what they plan on
−
** Is aluminum being stuck to module surface a performance issue (light yield)?
+
*** Need for good tracking of all modules
−
*** Really no way to test now
+
*** There will be several surveys and measurements for baseline
−
*** Need to decide threshold for re-wrapping
+
*** Sasha wants to minimize rewrapping - needs to come up with a threshold
−
** Some inspection/labelling needed prior to unstacking of blocks
+
*** Malte and Mark Dalton wish to be involved in FCAL module dis-assy
−
** Sasha proposed that him and Arshak inspect each module after removal to decide on action to be taken -
+
* Going through new version of Gant chart
−
** Mark and Malte need to be in loop for base and pmt changes
+
** Matt commented on the fact that some dates do not make sense
−
*** Possibly test light yield on first 100
+
** Need to update Gant chart with more realistic time frames
−
** Malte asked who unstacked the original modules from BNL and what were the issues
+
** Need to tie Sasha's manpower chart into Gant
−
** Looks like we will have about 500 good PMT spares
+
** Malte making base stress test plan to determine weak base
−
** Sasha presented manpower requirements
+
*** to be done in January
−
*** would need 2 students for 30 weeks to re-wrap all old modules
+
*** prepare stock pile of new bases
−
*** Total 11 students for 3 months will be needed for project (Eugene to check budgets)
+
* Discussed need for written procedures for all aspects of the project
−
*** JLAB folks responsible for unstacking modules - Hall D Techs/DSG?
+
** Sasha wishes to be responsible for all procedures pertaing to lead glass and crystal modules
−
*** Sasha/Arshak would train students to do module refurb
+
** He may need some help? Who will do what - This needs to be decided in order for things to go smoothly
−
*** Students would label and bundle cables
+
* Discussed desire to downgrade Hall for GERT only, can ESB be downgraded?
−
*** JLAB tech staff handle structure, darkroom, cable trays, racks
+
* Discussed the need for a planned quantity of modules to be re-wrapped
−
*** JLAB electronics group handle crate installation and cabling possibly with help from DSG
+
** This will be based on Sasha's proposed student manpower for 3 months
−
*** Students would handle moving existing cables to adjacent crates on north and south racks
+
** 700 modules to be re-wrapped is the current baseline
−
*** Need to get a final list of universities supplying students
+
** Sasha will obtain materials for many more just in case
−
*** Maybe best to downgrade the hall from RAD worker 1 to Gert only
+
* Discussed cables
−
** Sasha mentioned the need to re-strap some existing 25 micron brass strap crystal modules
+
** Sasha Fernando proposed a change to put PCBs at chains for LV
−
** Need to start developing procedures for all aspects of the project
+
*** Proposed horizontal layout will be too crowded
−
** Need to define workstations needed - add to Sasha's table and develop a layout
+
*** Will meet in a separate meeting again to decide on this
−
* Need to have electric power added to south side of FCAL platform
+
* Sasha showed a working layout for tables and shelving in hall for lead glass and crystal modules
−
* Need to update strawman schedule with more detail including resources
+
** Concern with stability of free standing shelving
−
* Lead glass acrylic sheet same design as original - need to remake panes for new geometry
+
** Can tie 2 shelves together for stability
 +
** Modify existing wall shelving for length of lead glass modules
 +
** Need to determine how much existing shelving and what is needed to procure
 +
* Discussed rack and crate layout
 +
** Sasha showed his proposed crate layout
 +
** Need to strategically place racks for simplified cable paths
 +
** Show 3d model of rack layout next meeting
 +
* Discussed need for mock ups
 +
** Maybe use ComCal as a mock up for new cabling in January when it is removed from the hall
 +
** Use lead glass to verify all wrapping /rework procedure so traing can be done well for students
 +
** Use videos to teach students?
 +
* Discussed use of 2 scissor lifts instead of big platform upstream of the FCAL
 +
** Need to demonstrate stability of lift at heights
 +
** Rent 2nd larger lift with 4 ft extension ($1K / month)
 +
 
 +
 
  
 
== Action Items ==
 
== 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
 

Latest revision as of 08:37, 18 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

  • Discussed minutes from last meeting
    • what inspections/marking/labeling are needed prior to removal of lead glass blocks?
      • Malte to come up with a written procedure of what they plan on
      • Need for good tracking of all modules
      • There will be several surveys and measurements for baseline
      • Sasha wants to minimize rewrapping - needs to come up with a threshold
      • Malte and Mark Dalton wish to be involved in FCAL module dis-assy
  • Going through new version of Gant chart
    • Matt commented on the fact that some dates do not make sense
    • Need to update Gant chart with more realistic time frames
    • Need to tie Sasha's manpower chart into Gant
    • Malte making base stress test plan to determine weak base
      • to be done in January
      • prepare stock pile of new bases
  • Discussed need for written procedures for all aspects of the project
    • Sasha wishes to be responsible for all procedures pertaing to lead glass and crystal modules
    • He may need some help? Who will do what - This needs to be decided in order for things to go smoothly
  • Discussed desire to downgrade Hall for GERT only, can ESB be downgraded?
  • Discussed the need for a planned quantity of modules to be re-wrapped
    • This will be based on Sasha's proposed student manpower for 3 months
    • 700 modules to be re-wrapped is the current baseline
    • Sasha will obtain materials for many more just in case
  • Discussed cables
    • Sasha Fernando proposed a change to put PCBs at chains for LV
      • Proposed horizontal layout will be too crowded
      • Will meet in a separate meeting again to decide on this
  • Sasha showed a working layout for tables and shelving in hall for lead glass and crystal modules
    • Concern with stability of free standing shelving
    • Can tie 2 shelves together for stability
    • Modify existing wall shelving for length of lead glass modules
    • Need to determine how much existing shelving and what is needed to procure
  • Discussed rack and crate layout
    • Sasha showed his proposed crate layout
    • Need to strategically place racks for simplified cable paths
    • Show 3d model of rack layout next meeting
  • Discussed need for mock ups
    • Maybe use ComCal as a mock up for new cabling in January when it is removed from the hall
    • Use lead glass to verify all wrapping /rework procedure so traing can be done well for students
    • Use videos to teach students?
  • Discussed use of 2 scissor lifts instead of big platform upstream of the FCAL
    • Need to demonstrate stability of lift at heights
    • Rent 2nd larger lift with 4 ft extension ($1K / month)


Action Items

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