Difference between revisions of "Minutes-3-20-2014"

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== Final installation and testing ==
 
== Final installation and testing ==
  
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- Beni: The tests done with the fADC125 firmware with 10 and 100 samples (hard coded by Cody) showed the same problem: after several thousand good events, there's a corrupted one (with a wrong length) and after that all are corrupted and there's no way to recover. As for the option to return back to the Gerard's code that was certainly working, the only way to do this is by manually re-programing again all the fADCs. Fernando: Cody, Bryan and Hai are working on this problem and they understand the urgency. Fernando hopes that very soon we will have a working code.
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- Lubomir: as of today we started testing the cathode channels with a scope (plan B). It will take about a day per package, so certainly by Tuesday we will be ready. With a scope you can't see all the problems (like frequency of the cosmics, or low amplitude noise) but one can identify the symptoms caused by a bad conductive tape: no signal at all or very small amplitude. So, at least we can identify and fix these. If by the next week we have the fADC working we can test all the channels in one night. In any case we decided to plan inserting the FDC at the end of the next week. If we have the fADCs we will immediately test all the channels after the insertion and by March 17 we should know if there are significant problems that will require to pull the FDC back on the platform.
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- There were some discussions initiated by Beni and Fernando, about what will be the consequences if the FDC installation is delayed say by a month. The CDC installation will be delayed, but then the other detectors are not ready for installation. After the meeting Elton discussed this with Tim: we are behind the schedule and more delays will make it even more difficult to do everything that is left in shorter time with the same people.
 
- There were some discussions initiated by Beni and Fernando, about what will be the consequences if the FDC installation is delayed say by a month. The CDC installation will be delayed, but then the other detectors are not ready for installation. After the meeting Elton discussed this with Tim: we are behind the schedule and more delays will make it even more difficult to do everything that is left in shorter time with the same people.
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== Electronics ==
 
== Electronics ==
  
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- A LV cable was cut during installation: the insulation and 3 out of  10 wires were damaged, but there's still LV on the cards.  Chris orderred parts needed to fix it.  
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- A LV cable was cut during installation: the insulation and 3 out of  10 wires were damaged, but there's still LV on the cards.  Chris ordered parts needed to fix it.  
  
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- Several 3M connectors have to be fixed, but we want to make sure they are really bad, because fixing is difficult. One connector can't be disconnected from the module, since the plastic part seprated from the metal base.  
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- Several 3M connectors have to be fixed, but we want to make sure they are really bad, because fixing is difficult. One connector can't be disconnected from the module: the plastic part separated from the metal base.  
 
   
 
   
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- 12 pre-amps that were replaced on the FDC were given to Nick for evaluation. Not all are necessarily bad, it could be also the connector on the pre-amp/daughter card that after replacement resulted in better connection.
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== Engineering ==   
 
== Engineering ==   
  

Revision as of 09:52, 23 March 2014

March 20, 2014 FDC meeting

Agenda

  1. Final installation and testing [1], [2]
    1. Testing with scope (Lubomir)
    2. Testing with DAQ E-log (Beni)
  2. Engineering (Bill, Dave)
    1. Cathode scan [3]
    2. Fixing tools [4]
  3. Electronics (Chris, Nick)
  4. Other


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