Difference between revisions of "Minutes-10-14-2010"
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| − | - Wire stringing. According to Bill: the strong-back has been machined ready to be put on the granite table. The pin bars are in the machine shop to be attached to the spacer bars. The mounts for the micrometers (that will be used to adjust the chamber position w.r.t. pin bars) was designed and will go to the machine shop today. David was working | + | - Wire stringing: the pin bars were mounted on the granite table. Almost all the parts are ready. David got the ISA-USB |
| + | converter for the movement system, but has not tested yet. Bill got a PMT from Carl to be used as a sensor for automatic mapping of the wire positions. If the light on the PMT is too high, we would better use a photodiode. Fernando will help Bill with this. | ||
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| + | According to Bill: the strong-back has been machined ready to be put on the granite table. The pin bars are in the machine shop to be attached to the spacer bars. The mounts for the micrometers (that will be used to adjust the chamber position w.r.t. pin bars) was designed and will go to the machine shop today. David was working | ||
on the motion system: capable of 0.2 microns increment, good repeatability, but needs more tests. He ordered ISA-USB converter to connect the stepper motor controller to a new computer. Bill and David are looking for a sensor to be used for automatic mapping of the wire positions. | on the motion system: capable of 0.2 microns increment, good repeatability, but needs more tests. He ordered ISA-USB converter to connect the stepper motor controller to a new computer. Bill and David are looking for a sensor to be used for automatic mapping of the wire positions. | ||
Revision as of 23:23, 14 October 2010
October 14, 2010 FDC meeting
Tentative Agenda
- Production
- Blue Crab status
- Frame production, lamination
- Electronics (Fernando, Chris, Roger)
- Update on PCBs
- Cathode foil procurement
- Engineering (Bill, David)
- Wire stringing: fixtures, movement system
- Other
- Full-scale prototype tests (Beni, Lubomir)
- status of gas mixture studies
- tests with fADC125
- Other
Minutes
Participants: Eugene, Fernando, Bill, Chris, Roger, Casey, Mark, Glenn, and Lubomir.
Production
- At Blue Crab now we occupy some space at the far corner not to interfere with the installation work there. We have there two granite tables and one round. Casey will order two more round tables. Need additional temporary light. AC for the whole building is coming soon. JLab internet connection and two plain phones will be installed in the office.
- Five wire frames were laminated with Rohacell rings and sent back to the company for flat cut. Last two laminated at Blue Crab. Five new frames will come soon. Two new Rohacell rings are ready.
Electronics
- The first article populated PCBs will be at JLab next week. They will be checked, channel by channel, and will be ready by the end of October. Then the first PCB ring will be glued, most likely in 126. By the end of November we will have all the PCBs ready. They will be stored in F117.
- No news from the procurement about companies (other than Allflex) interested in the cathode production. The deadline was Oct.13. As Fernando promised before, he will take care of the procurement (not a sole source!) of the rigid-flex. Fernando and Roger will contact Allflex for the details of the rigid-flex production.
- Fernando submitted a PR for the mini HV cables.
