Minutes for the meeting on Monday, 16 August, 1999.

Present: GV/TH/MARKL/PB/AD/MF/PP

1) Aaron and Greg filled in a couple of details missing
   from the `status of jigs' summary presented last week:
   (the numbering here corresponds to the list presented
   in the minutes for the meeting of 9 August 1999)

  4  The construction of the rotating sling is waiting
     on materials.  Aaron estimates that the project
     will be completed around the end of September.

  6  The modifications to jig #2 are ready to proceed;
     estimated completion time is 20 August. 

2) Paul Birney added a couple more `jobs to be done'
   in the jig category:

  -- An improved lifting clamp needs to be designed
     and manufactured to maneuver the feedthrough 
     assembly in and out of the cold test station.

  -- Diodes for the old temperature controller (AP model-K)
     are no longer available.  However, that temperature
     controller can be made to work with the same diodes
     used with our SI 9620-1 temperature controller by
     retrofitting with three eproms and also changing
     the software calibration, all of which was provided
     free of charge.  We will have the electronics shop
     install the eproms. 

3) Aaron reported on his progress with the production 
   timeline.  Most of the technical problems have been
   solved.  Aaron is aiming at having a `first draft'
   done by mid next week (~25 August).

4) Terry updated the currents status of `negotiations'
   with Alberto Desirelli (TIS) regarding the tests
   to be done.

  -- TIS agrees that only the cold box (the cold flange, 
     pincarriers, and cold funnel) needs to adhere to CODAP.

  -- TIS has requested that Charpy tests be performed
     on all butt welds in the cold.  Terry initially
     argued that the feedthrough have no butt welds
     in the cold box, but later recalled that the
     the seam of the inner tube is a butt weld.
     Negotiations on this are ongoing.

  -- UVIC will be responsible to do the x-ray tests on
     the qualification welds.

  -- TIS's earlier request to cut up our first completed
     feedthrough for testing was a mistake; this is no
     longer requested.

  -- TIS has indicated that dye penetrant tests be done
     on all welds in the cold box during production.
     Terry requested that this test be done on a random
     basis, and not apply to the pincarriers, however
     TIS is holding firm on this requirement.  (Will the 
     dye used in test be a potential argon poison?)

  -- TIS also wants ferrite content tests to be done
     on all welds.  Again, Terry has requested that these
     be done on a random basis, but TIS is holding firm
     on the requirement.  This might not be such a difficult
     or time consuming test to perform anyway.

  -- TIS requires that a pressure burst test be performed
     on a full cold box assembly, including pincarriers.
     Terry and Pierre have argued that the pincarriers
     need not be retested, since they have previously
     been pressure tested at CERN to 250 bar.  Terry will
     suggest to TIS that the tests be made with pincarrier
     blanks.  If TIS won't agree to using blanks, then
     TERRY will suggest using PCT pincarriers in place
     of Glasseal.

  -- CERN has agreed that the leaktesting of the feedthoughs
     will *not* be a UVIC responsibility once the feedthroughs
     are installed.

  -- TIS has agreed that tests on materials common to the
     BNL material batches need not be repeated by both
     BNL and UVIC.

5) Mark is currently working on the assembly drawings, and
   expects to finish before the end of August.  Not knowing
   the shape of the vacuum cables (CRPP or BERG) is a minor
   problem; two sets of drawings might need to be produced. 

6) Paul Birney pointed out a few minor mistakes in the
   detail drawings.  These are trivial to fix and Roy
   has been notified.

   Paul also pointed out that the height of the vacuum
   fitting on the warm flange is uncertain.  It is very
   unclear who at CERN is responsible for this.    
   

The next feedthrough meeting will take place on monday,
23 August at 10:00.  Terry and Pof will not be present;
Richard and Margret *might* not be present.  The proposed 
agenda is:

1) (Aaron) Update on feedthrough production timeline.

2) (Mark) Assembly drawings update.

3) AOB. 

4) Agenda for meeting on 30 August.

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   Paul Poffenberger          phone (250) 721 7741
   Dept of Physics            fax   (250) 721 7752   
   University of Victoria     email pof@uvic.ca
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