October 05, 2022 FCAL Insert Installation Meeting
From GlueXWiki
Meeting Time and Place
Wednesday October 05, 2022 10am At Jefferson Lab, Hall D Counting House and on Teams
Agenda
- Minutes from last meeting https://halldweb.jlab.org/wiki/index.php/October_07,_2022_FCAL_Insert_Installation_Meeting
- Discuss Lead Glass and crystal module removal/install] - Sasha
- Use of platform upstream of detector - Stephanie/Tim
- Discuss cable mapping - Sasha
- Existing cables
- New Cables
- Cable quotes 0 Chris S.
- Existing structure can support 2500lbs
- Monitoring system discussion directly after
- Assembly in ESB
- Media:FCAL2_strawman_schedule.pdf
Minutes
- Discussed lead glass module removal/install
- Lead glass blocks will be installed as they are now with alternating SS vertical and then horizontal
- Refurbishing existing module bases is about 1 hour for Malte and Mark, but Chris S. also has to do very delicate work also
- Students may help base repairs but ES&H input would be needed
- Since there is no time to design, test and fabricate new bases for the existing modules, we will stick to repairing existing bases
- The worst bases should be removed in March before taking apart the detector so the repairs can be started
- More detail needed on existing module refurbish plan
- Mark D. has database for existing module and will come up with an initial plan for sorting
- Eugene expressed that we should work with the mini FCAL to develop the removal/refurbish plan
- Cable discussions
- Fernando expressed that in the tight area, LV cables should not be ribbon cables - 1 cable for each base should be used
- Revisited signal cable plan to come from downstream wall through patch panel - Mark D. not at previous meeting - seems ok
- Six patch panels in all for all new cables - need to start designing this for dark room and reinforcements needed
- Existing I-beam over dark room should handle additional cable weight
- Need to look at cable routing under platform and come up with a layout
- Sasha needs to come up with a cable mapping plan to help reach decisions on using existing cables or removing all
- Chris S. will ship out 1200 signal cables to get terminated
- Chris S. to get quote on additional 400 signal cables
- Chris already request quote for 1600 new thin (RG174) signal cables to go from patch panel to detectors
- Discussed insulation vacuum vs. standard - standard foam board ok since delta T is small