Difference between revisions of "Minutes-8-26-2010"

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- There will be two conference calls with two clean room vendors today. Bill will participate. There was a list of questions submitted to the vendors with regard to reducing the cost. Pictures of the Blue Crab property as of yesterday 08/25/10, are linked above. The accelerator people have stored there some stuff temporary.
 
- There will be two conference calls with two clean room vendors today. Bill will participate. There was a list of questions submitted to the vendors with regard to reducing the cost. Pictures of the Blue Crab property as of yesterday 08/25/10, are linked above. The accelerator people have stored there some stuff temporary.
  
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- A budget of the FDC production (linked above) was prepared based on the Fast Track labor estimates done by Bill and Lubomir and the equipment and material list from David. This estimate does not include the electronics, gas system, support frame and is only for the work related to the production at Blue Crab. We have about $1M in the baseline for these activities (both materials and labor), but need about $1.43M for the production; so the difference is $430k in addition to the $360k that were overspent already for the FDC project. Beni asked what was underestimated in the project. Eugene: mostly the labor costs. Bill mention that some additional procurements (like for the end caps) have to be included in the budget. As soon as we have a realistic estimate for the FDC budget, Eugene suggested to formulate a change request with items indicating the number of the layers that will be produced on month by month bases.    
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- A budget of the FDC production (linked above) was prepared based on the Fast Track labor estimates done by Bill and Lubomir and the equipment and material list from David. This estimate does not include the electronics, gas system, support frame and is only for the work related to the production at Blue Crab. We have about $1M in the baseline for these activities (both materials and labor), but need about $1.43M for the production; so the difference is $430k in addition to the $360k that were overspent already for the FDC project. Beni asked what was underestimated in the project. Eugene: mostly the labor costs. Bill mention that some additional procurements (like for the end caps) have to be included in the budget. As soon as we have a realistic estimate for the FDC budget, Eugene suggested to formulate a change request with items indicating the number of the layers that will be produced on month by month bases.      
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- Ron Bartek explained that the bids for the clean room came very high and listed his suggestions to reduce the price: 1) class 10,000 NOT OCCUPIED 3) humidity limits 35-55% 4) no outlets inside (at least initially) 5)max number of people from 10 to 6. 1) would mean tighter protocol (2) for entering/working in the clean room; we agreed to this change. 3) Bill suggested 35-50% humidity limits if the change from 55 to 50% is not critical for the cost. Carrol Jones gave us more details about the humidity control also at other places at JLab. 4) means that we can install outlets later. As for #5, maybe it is not so critical. In addition we discussed if the complete elimination of the exhaust is acceptable, if we need the vestibule as it is (Carrol explained us it is important). Ron Bartek will inform all of us tomorrow about the company's suggestions how to reduce the price and what dominates the price. This information will help greatly to continue this discussions.
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- David made a list of materials and equipment needed for the FDC production, totaling $120K. We have to find a way to include this into the FDC budget. We discussed the main items: epoxy, tables, additional transfer ring, microscope, ... Tim suggested starting with smaller quantities and then buying/manufacturing depending on the needs. Eugene wanted to have these numbers spread over the years. Communicate with David to include other stuff in the list, if necessary. 
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- Mark and Casey prepared a list of possible defects for the FDC production. Eugene asked about the cathode soldering technique and the probability for failure. Bill is getting tomorrow the magic soldering tape (from 3M). We will have: G10 frame, cathode foil, magic tape and then the flex that has to be heated to 400F. Bill discussed the tooling needed for this technique: most likely we have to make it. 
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== Electronics ==
 
== Electronics ==
  
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- Fernando presented Christopher Stanislav who is testing the PCBs. No problems with the first article PCBs. The Gerber files were modified to fix the coating problem: some of the vias were not coated. We will have all the PCBs ready by mid September. Bill: when we can have the first article PCBs to be used in the first wire frames? Fernando: probably end of September; working now on the procurement for the PCB stuffing.  
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- No news from Fernando. Christopher has created a logbook with information about the PCB tests for each board. David suggested implementing the traveler system: a data base with some parameters for each part or operation done at a certain time. He's working on the list of the parameters and needs input from everybody.
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- Fernando and Beni discussed the test of the prea-amps in discriminator configuration; Fernando has two pre-amps together with the converter to ECL ready. Fernando is also working on the procurement of the thin HV cables, that will be connected to the pins of the HV connector of the thick cables.
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== Engineering ==
 
== Engineering ==
  
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- Cathode foils: Roger communicates with the procurement about the sole source PR. They need more information about the foil production: why it is unique and can be done only at Allflex. They need independent estimate of the price. Fernando: suggested to ask Advanced Circuits for such estimate; the production is unique because of the large sizes of the foils and thin copper.
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- Cathode foils: Roger communicated with Advanced Circuits and expects today an estimate. Then he will return to the procurement the forms and the information they requested for the  
 
   
 
   
 
- no news about the wire stringing design; Bill is busy with other things.
 
- no news about the wire stringing design; Bill is busy with other things.

Revision as of 17:03, 26 August 2010

August 26, 2010 FDC meeting

Tentative Agenda

  1. Production
  2. Electronics: update (Fernando)
  3. Engineering
    • Cathode foil: sole source procurement status (Roger)
    • Other: rohacell gluing, cathode grounding, update from UVA
  4. Full-scale prototype tests: update (Beni)
  5. Other


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