Difference between revisions of "Minutes-4-29-2010"

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= Minutes =
 
= Minutes =
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Participants: Bill, Roger, Brian, Glenn, Chuck, Mark, Simon, Beni, Eugene, Lubomir
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Participants: Fernando, Casey, Roger, Brian, Glenn, Bill, Kim, Simon, Beni, Eugene, Lubomir
  
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== Production ==
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== Production space ==
  
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- Brian reported on his visit at UVA. The parts at UVA, two pin rails (~2m each) and the parts of the position measurement system, are in good condition and can be used. Brian thinks that the stringing of the FDC at JLab using the UVA procedure/equipment is doable; the number of the wires is not that big to require winding machine. Brian and Bill discussed some possible improvements related to the way the pin rails are attached to the table/ strongback, the way the weights are attached to the wires. There were discussions about the precision of the stepper motor for the position measurements.
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- Tim is the contact person from our side for the 727 B.C. property. He will meet with Rusty to discuss our requirements and all the details. There was a meeting with the network people from the computer center. They will organize the network using their equipment. We will pay for the COX business connection.
  
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- not only UVA agreed to lend us the equipment, but as Prof. Nilanga Liyanage (before UVE he worked for Hall A) proposed, they want to join the Hall D collaboration and work on the FDC (great news!). As part of their contribution, Nilanga proposed to send us a student for this summer. We are discussing now the possible tasks for him.
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- A document has been created (attached above) with the intention to list all the steps of the FDC production and describe them in terms of manpower and time. Lubomir will seek help from Brian and Mark to estimate the manpower required for each step. The wire stringing procedure will be based on the UVA experience. Then Bill will review the document and we will continue with creating a flowchart of the production.
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- Glenn suggested to organize a meeting with Rusty to formulate our requirements about the off-site space. Bill already made a floor plan and estimated some general parameters that were needed to plan the infrastructure there.
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== Updates on: ==
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== Electronics ==
  
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- Electronics: the PCBs are finalized; Kim sent out the PCB specifications to three vendors. Fernando submitted the PR for the cables.
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- PCBs: some minor modifications have been done and the design is now final. Kim got quotes from 
  
 
- Cathode redesign: Roger had several questions related to the ground of the cathode daughter board (flex) design, and also the strip labels.
 
- Cathode redesign: Roger had several questions related to the ground of the cathode daughter board (flex) design, and also the strip labels.
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- Bill explained the proposed design of the cable bundles and the installation procedure. Still, we have to decide about the total number of cables and get accurate info about their sizes. This includes 528 (+ 24/48spare?) signal cables, 264 thin low voltage cables, 8 HV cables, 4 grounding cables, 48 gas pipes, 8? cooling lines. We are considering also to do some prototype cable bundles to make sure it works. Expect more discussion on the next meeting.
 
- Bill explained the proposed design of the cable bundles and the installation procedure. Still, we have to decide about the total number of cables and get accurate info about their sizes. This includes 528 (+ 24/48spare?) signal cables, 264 thin low voltage cables, 8 HV cables, 4 grounding cables, 48 gas pipes, 8? cooling lines. We are considering also to do some prototype cable bundles to make sure it works. Expect more discussion on the next meeting.

Revision as of 15:31, 29 April 2010

April 29, 2010 FDC meeting


Tentative Agenda

  1. Production space
  2. Electronics
    • PCB (Kim, Fernando)
    • grounding/oscillation tests (Lubomir)
  3. Cathode redesign (Roger) beam hole, fdc left, cathode adapter
  4. Cosmic tests (Beni)
  5. Other
    • talks at the Collaboration meeting
    • open house


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