Difference between revisions of "Minutes-8-30-2012"

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= Agenda =
 
= Agenda =
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# Cathode production [http://www.jlab.org/Hall-D/detector/fdc/production/FDC_Construction_August_30_2012.xlsx Construction Tracking] (Dave)
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# Production [http://www.jlab.org/Hall-D/detector/fdc/production/FDC_Construction_August_30_2012.xlsx Construction Tracking] (Dave)
 
# Cathode corrosion
 
# Cathode corrosion
 
#* Recent test results: [http://www.jlab.org/Hall-D/detector/fdc/corrosion/2012-08-30_09.26.58.jpg]
 
#* Recent test results: [http://www.jlab.org/Hall-D/detector/fdc/corrosion/2012-08-30_09.26.58.jpg]
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== Production ==
 
== Production ==
  
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- Dave: using the new tool to hold the cathodes flat, two cathodes moved to tables and the cards are being glued there.   
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- Dave for: working on all the cathodes for package #1. Using the new tool to hold the cathodes flat, two cathodes moved to tables and the cards are being glued there. Will have cathodes for the first, second, and third cells by next Tuesday, next Thursday, and next next Tuesday respectively. This is assuming one cathode per day, which is limited by the tools that we use now.
  
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- The third package is ready with the subsystems: grounding, cooling tubes, HV cabling. The plan is to move it to 126 tomorrow. The grounding worked fine, Vlad put ~100 clips for grounding as planned and another ~100 attached close to both sides of the cards (where possible and needed) to prevent the cathode deformation at the periphery. As Casey suggested, we used a new method to install the cooling tubes. We tightened the bracket on one card in the middle of the tube and installed the rest of the brackets loose. Then, going from the middle card toward the two ends of the tube we tightened the rest of the brackets. Thus, the copper tubes apply some pressure on the cards; before we had problems with some of the cards being pulled by the tubes. Gluing of the back brackets with green epoxy to the tubes was done at the end. In 126 after installing the cables we should experiment how easy will be to remove the extra clips we put on the card sides.
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- Wire frames: Chris will put the resistors on the first PCB set next week. Then we will start laminating the wire plane #29, we have a frame for it. The other three G10 wire frames will come from the machine shop in ~2 weeks. Fernando and Bill confirmed that the new PCBs can be used.  
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- Quotations came from Allflex
  
 
== Cathode corrosion ==
 
== Cathode corrosion ==

Revision as of 17:56, 30 August 2012

August 30, 2012 FDC meeting

Agenda

  1. Production Construction Tracking (Dave)
  2. Cathode corrosion
    • Recent test results: [1]
  3. Conductive tape studies: [2], [3], [4],[5], [6] (Vlad)
  4. Engineering (Bill)
    • Cathode strong-backs
  5. Electronics (Chris, Nick)
    • PCBs
  6. Third package tests FDC E-log (Beni)
  7. TDR, pages 132-145 (Lubomir)
  8. Other


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