Difference between revisions of "Minutes-8-22-2013"

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# Other
 
# Other
  
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= Minutes =
 
= Minutes =
  
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Participants: Eugene, Bill, Nick, Simon, Vlad, Dave, Beni, Glenn, and Lubomir.
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Participants: Bill, Chris, Nick, Simon, Vlad, Beni, Glenn, and Lubomir.
  
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== Production ==
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== Installation preparations ==
  
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- On Wednesday (8/14) we moved the FDC from Blue Crab to EEl126 (see pictures attached). We installed tires on the cart at 30psi that worked as a cushion. Dave: had problems with the truck this morning that delayed the moving; still thinks will finish by Friday. If not, some stuff can be left at Blue Crab close to the doors to be moved on Monday. Eugene suggested to move the two granite tables left at Blue Crab (one went to Brian Cross) to the ESB temporary and then try to occupy some of "our space" in the TEDF or Test Lab. Tom is providing help for the transportation.
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- We are done with the production and will continue discussing the installation. We went through the installation document linked above, where the installation topics are grouped in different categories, as in the agenda.
  
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- End of last week we finished the cabling dry run: 1/4 of the signal cables were installed (see pictures attached). The additional rails for the mesh are causing some problems for the installation and service of the chambers being very close to the pre-amps and connectors. Especially, due to the four additional rails on the sides the density of the cables between the rails is very high so that it is difficult to work on the pre-amps behind them. It turned out that the axis of the mesh for this exercise was shifted with respect to the FDC axis and we had more space at the side where we did the cabling than we are supposed to. Other than that and the finding that we need more cuts on the skin for cable attachment, everything was successful and the dry run demonstrated that the current cabling scheme will work.
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- Mechanical. Bill explained the way the detector rails will be installed: first in BCAL adjusting the two main rails to the nominal distance. Then the rails of the front installation cart will be adjusted and attached, and so on. The survey people will need space around the FDC and Bill was considering the possibility to remove the electronics racks. We think this should be done if absolutely necessary since the racks will be installed, powered, connected to ground, and this will delay the installation.
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- Electronics. According to Nick and Chris, most likely the modules will be tested in the crates and then the crates with the modules together installed in the racks, as in the original plan. This worked already for the FCAL, they just had to remove the power supplies while installing the crates. The LV and HV system will be installed ion advance before the start of the FDC installation. They will be needed for testing.
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- Gas system. It's in production now. Some elements have been bought already. If it is not completely ready when we start the installation, we will have to find a temporary solution: a dewar with Nitrogen, or gas mixture.  
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- Controls. Some minimal control will be needed during the installation. Dave will work on the codes for the chiller, and the gas system.  
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== Engineering ==
 
== Engineering ==

Revision as of 18:40, 22 August 2013

August 22, 2013 FDC meeting

Agenda

  1. Installation preparations [1]
    • Mechanical: infrastructure, survey, cooling system, AC
    • Electronics: crates, modules, LV, HV
    • Gas system
    • Controls: LV, HV, gas
    • Testing: cables, trigger, DAQ
  2. Engineering (Bill)
  3. Electronics (Chris, Nick)
  4. Tests at EEL126 (Beni)
  5. Other


Minutes

Participants: Bill, Chris, Nick, Simon, Vlad, Beni, Glenn, and Lubomir.

Installation preparations

- We are done with the production and will continue discussing the installation. We went through the installation document linked above, where the installation topics are grouped in different categories, as in the agenda.

- Mechanical. Bill explained the way the detector rails will be installed: first in BCAL adjusting the two main rails to the nominal distance. Then the rails of the front installation cart will be adjusted and attached, and so on. The survey people will need space around the FDC and Bill was considering the possibility to remove the electronics racks. We think this should be done if absolutely necessary since the racks will be installed, powered, connected to ground, and this will delay the installation.

- Electronics. According to Nick and Chris, most likely the modules will be tested in the crates and then the crates with the modules together installed in the racks, as in the original plan. This worked already for the FCAL, they just had to remove the power supplies while installing the crates. The LV and HV system will be installed ion advance before the start of the FDC installation. They will be needed for testing.

- Gas system. It's in production now. Some elements have been bought already. If it is not completely ready when we start the installation, we will have to find a temporary solution: a dewar with Nitrogen, or gas mixture.

- Controls. Some minimal control will be needed during the installation. Dave will work on the codes for the chiller, and the gas system.


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