Difference between revisions of "March 12, 2023, FCAL Insert Installation Meeting"

Revision as of 17:06, 11 April 2023

Meeting Time and Place

Wednesday March 12, 2023 9am At Jefferson Lab, Hall D Counting House and on Zoom

Agenda

• Minutes from last meeting https://halldweb.jlab.org/wiki/index.php/March_5,_2023,_FCAL_Insert_Installation_Meeting
• Go through updated Procedure
  • Media:FCAL2_schedule_v2a.pdf
• Discuss Lead Glass and crystal module removal/install [1] - Sasha
• Cable update Media:FCAL2_lv,board.pdf

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)