Difference between revisions of "Minutes-2-28-2013"

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# Tests at EEL126 [https://halldweb1.jlab.org/elog-halld/FDC FDC E-log] (Beni)
 
# Tests at EEL126 [https://halldweb1.jlab.org/elog-halld/FDC FDC E-log] (Beni)
 
# Other
 
# Other
 
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= Minutes =
 
= Minutes =
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== Production ==
 
== Production ==
  
- Dave for the spare parts:  
+
- Dave for the spare parts: working on the last cathodes #87, 88, 89. These have been tensioned and we are working now on the daughter cards. We will build also an extra-spare cathode #90; the foils has been glued for it.
  
- Lubomir for package #2: completely tested, oxygen went down to 170ppm. Started installing the grounding, 75% done. It is now on the mounting table
+
- As Casey proposed after the collaboration meeting, he replaced the six deadened wires (deadened area of 6cm diameter) of wire plane #2 with new wires. This will allow us to make 7.8cm deadened area, that is needed for the second package. The wires are glued, will be soldered tomorrow and the tension tested.
and we don't have extra strong-back (used in 126) to put it on a table, or we can't use the holding brackets to hang it on the rails. The holding brackets will be used to test the deformation of the installation cart. So, next week we will move it on a granite table so that we can start working on the spare package.
+
  
== Basis of Estimate for the FDC ==
+
- Spare wire plane #6 with wires strung but without HV caps, has been tested: 600/-60nA at 2100/-500V. Now Anatoly is installing the caps. 
 +
 +
- Package #2: the grounding and the cooling tubes have been installed. Chris and Nick will come on Monday to do the HV connections. So far the package is still sitting on the mounting table.
  
- New version of the BOE is linked above. Most of the discussions were after the meeting with Eugene and on the next day. 
+
== Rebaselining update ==
  
== Corrosion test at MePhi ==
+
- We are filling the html templates that Eugene created for each activity. Where available we link documents with more details (see the file linked above and click on the 25211191 activity for ex.). Eugene wanted to have all the activities finished in this manner by the middle of the next week.
  
- Already 18 days Viton and Viton+Apiezon samples are OK. Vlad mentioned that due to the condensation there is some water also directly in the cup with the samples, so the conditions are even more severe.
+
== Engineering ==
  
== Engineering ==
+
<!--
  
 
- Bill went step by step over the procedure (linked above) for bending/cutting the cooling tubes and installing the manifolds. Beni was concerned about the radiation hardness of the Tygon tubing that will be used for cooling. We expect to have 1kRad for 10 years and this is not a problem for the Tygon (Bill).  
 
- Bill went step by step over the procedure (linked above) for bending/cutting the cooling tubes and installing the manifolds. Beni was concerned about the radiation hardness of the Tygon tubing that will be used for cooling. We expect to have 1kRad for 10 years and this is not a problem for the Tygon (Bill).  

Revision as of 17:14, 28 February 2013

February 28, 2013 FDC meeting

Agenda

  1. Production Construction Tracking (Dave)
    • Spare parts
    • Spare wire plane testing
    • Package #2 status
  2. Rebaselining update [1](Lubomir)
  3. Engineering (Bill)
    • Cooling system test
  4. Electronics (Chris, Nick)
  5. Tests at EEL126 FDC E-log (Beni)
  6. Other

Minutes

Participants: Eugene, Dave, Chris, Nick, Beni, and Lubomir.

Production

- Dave for the spare parts: working on the last cathodes #87, 88, 89. These have been tensioned and we are working now on the daughter cards. We will build also an extra-spare cathode #90; the foils has been glued for it.

- As Casey proposed after the collaboration meeting, he replaced the six deadened wires (deadened area of 6cm diameter) of wire plane #2 with new wires. This will allow us to make 7.8cm deadened area, that is needed for the second package. The wires are glued, will be soldered tomorrow and the tension tested.

- Spare wire plane #6 with wires strung but without HV caps, has been tested: 600/-60nA at 2100/-500V. Now Anatoly is installing the caps.

- Package #2: the grounding and the cooling tubes have been installed. Chris and Nick will come on Monday to do the HV connections. So far the package is still sitting on the mounting table.

Rebaselining update

- We are filling the html templates that Eugene created for each activity. Where available we link documents with more details (see the file linked above and click on the 25211191 activity for ex.). Eugene wanted to have all the activities finished in this manner by the middle of the next week.

Engineering