Minutes of feedthrough meeting of 15 May, 2000.
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Present: GV, AD, Pof, MGF, PB, RM, RL

*) Milestones:

	- 60 ColdFlanges that arrived on 8 May have
	  all passed inspection.

	- 9 WarmFlanges (not 8 as reported last week)
	  which arrived on 9 May have been inspected
	  and all passed.  Several were slightly undersized 
	  where they mate with with Seal Rings, but will 
	  pass anyway since the Seal Rings will still
	  fit over the Warm Flanges.   

	- 66 Funnel Bases were received on 9 May.  65
	  passed inspection, and one failed because
	  it was out of tolerance.

	- 60 Lower Funnel Tubes, 65 Funnel Bases, and
	  60 ConFlat Flanges were shipped to SM on
	  11 May.  SM will complete ~4 funnels by 
	  the end of May.

	- 6 Bellows arrived 11 May.  All passed visual 
	  inspection, but vacuum testing is postponed
	  pending cleaning of the Bellows.

	- The new HLT 270 arrived on 10 May.

	- The resistance (Phred and Phreda) and Impedance
	  (Armadilo) tests (collectively known as
	  Impedistance...) were completed on Friday 12 May.
	  Analysis of the data will take place this week.
	  Crosstalk measurements were more than half
	  complete on Friday, and should be finished on
	  Monday 15 May.  After several days of testing,
	  the *maximum* throughput for crosstalk testing
	  with the scope setup is ~10 per hour, and
	  for resistance/impedance tests, ~8 per hour.
	  More realistic estimates are probably about
	  75% - 80% of these throughput numbers.

	- PB has made a test device to subject a sample
	  of our heater resistors to wet/dry cycles.
	  The resistors are mounted on an aluminum plate
	  which is dunked every 15 minutes into a basin
	  of water.  The power to the resistors is cut
	  during the actual dunking.  In addition to 
	  the wet/dry cycles, another set of resistors
	  will be further subjected to nightly freezing.

	- The thermal pad material for use between the
	  warm flange and our proposed heater plate has
	  arrived.  We also have enough of the graphite
	  thermal contact material (to be used between
	  the resistors and the heater plate) to outfit
	  one full heater.  Preparations will be made to
	  conduct another, hopefully final and definitive,
	  thermal test at the cold station next week.  

	- Five 1.2 meter test harnesses (for conducting electrical
	  continuity tests on the cold station and at CERN
	  on the cryostat) and two LV vacuum cables arrived from 
	  Axon last week.  38 LV vacuum cables remain to be 
	  delivered pending our approval of the first two.  

*) Roy has heard from Sicom that the remaining 26 Seal Rings
   will be machined by the end of this week and should be
   delivered to UVIC by ~ 25 May.

*) Roy will check with Ebco regarding the unused steel blanks
   that have not been returned to us.

*) Still no word regarding a revised pincarrier delivery
   schedule.

*) A tranducer on the TRIUMF ultrasonic bath has failed, and
   the replacement is not expected until ~June 5.  The `critical
   path' parts yet to be delivered are the funnels, expected at
   the end of May, so the failure of the ultrasonic bath probably
   represents a delay for feedthrough construction of ~1 week.
   It would, of course, also have been desireable to commence
   cleaning of much of the stock already in hand.

*) Margret reported that MPI requests two pincarriers (any type,
   by must be leak tight) for tests to be carried out in May 2001.
   We should be prepared to give them a definitive answer by
   the July LARG week.

*) Roy and Aboud have opened initial discussions during the April 
   LARG week regarding feedthrough reception and installation 
   tooling at CERN. 

*) ORSAY has requested to `loan' 12 `spare' T47 pigtails to the
   EMEC group for tests to be carried out at Simic.  This request 
   is being taken under consideration, but there is strong 
   reservation on our part about releasing pigtails to be handled 
   by `non-experts' in a potentially dirty environment.

*) PB pointed out that the feedthrough restraining bars still
   need to be made.  These are used both for shipping, to hold 
   the bellows rigid, and for vacuum testing, to prevent the bellows 
   from collapsing.  There has not yet been an RFQ for this item,
   but Roy and PB estimate a unit cost of ~$70, and a total cost
   of 4 X 60 X $70 = $16,800.  Michel has been informed of this
   additional bugetary item.   

Agenda for next week:
^^^^^^^^^^^^^^^^^^^^^
- Milestones
- vacuum cable test results
- plans for the thermal tests
- pincarrier delivery-schedule status
- AOB