Minutes of feedthrough meeting of 17 July, 2000.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Present: GV, Pof, MLenc, AD, TH, MGF, RM, RL, RKK

*) Milestones:

	- Ten more repaired T-piece glands arrived from CERN
	  today.

	- The Rohacell and Aluminized Mylar was installed
	  into FT0.

	- Cirris cables tests were done on FT0; no problems
	  were found, although a jackscrew from the testharness
	  broke off in a pincarrier during the tests.  See below
	  for more discussion...

	- The T48 and T48 pigtails that arrived on 7 July were
	  Cirris tested; no problems were found.

	- The bids have been received for the machining of
	  the heater plates and bellows braces.  The contract
	  will go to Southern Cross for ~ K$17.5.

	- BNL apparently agreed late in 1999 to purchase all of
	  the warm cables, including those for the EndCap.

*) The bellows and funnel welds are ready to proceed on FT0.
   The welds will be arranged for Wednesday 19 July along with 
   the next set of pincarrier/T-piece/flange welds. 

*) A jackscrew on a test harness broke off in a WarmFlange pincarrier
   of FT0 while doing the Cirris tests, apparently due to galling.
   Fortunately, the jackscrew broke off with a few mm remaining produding 
   above the pincarrier hole, which allowed a small piece of steel
   to be welded to allow the remaing stud to be turned.  After several
   attempts (the steel broke off and was rewelded several times) the
   jackscrew was successfully removed without serious damage to the
   pincarrier threads.  The pincarrier threads were afterwards cleaned 
   out with a tap.  To prevent future occurances of galling, the test
   harness jackscrews will be sprayed with teflon spray after every
   7 or 8 plunins.  Also, the jackscrew socket on the Cirris micro-D
   connector will also be sprayed.

*) Margret will request from Axon more spare micro-D and ATI jackscrews.

*) Margret will send two pincarriers to Horst Oberlac at MPI in exchange 
   for the four prototype HEC cables provided to us.

*) Alex from Columbia Valve and Fittings visited us to field questions
   on the VCR fittings and gaskets.  He will check with swagelok if
   the "1/4 turn" rule is still valid (1/4 turn apparently cause damage
   to the VCR seal face), and will also try to get a price break for 
   some items such as blind gaskets.  Mark will keep in touch with
   Alex while PB is away on holidays.

*) Although Glasseal may start cold cycling the pincarriers themselves,
   it is agreed (among the UVIC group) that we will continue performing 
   three cold cycles ourselves on reception.

*) Mark will check with Ken Sexton regarding the electrical properties
   of the Ambient Flange heaters, so that the UVIC and BNL heaters
   will `look electrically the same' to the slow controls group.
   Christian Zeitnitz (in charge of slow controls) is to be kept
   in the loop of these communications.  In the mean time, we should
   proceed with the drilling of the Ambient Flanges.

*) Horst Oberlac has requested that UVIC make the warm HEC power
   cables, with MPI providing the funds.  RKK replied that we will
   consider it.  We'll requre some further information for this,
   such as EndCap Pedestal drawings and details of the connectors
   to be used. 

*) Procedures need to be worked our for purging the funnel volume 
   before and after cooldown during the cold tests to ensure that
   no condensation occurs on the Cold Flange.  We will use our
   SS 200 liter dewer for the cold tests, and fit it with an in-line
   filter to remove any particulate matter which might be present
   in the LN2.  

*) We need to work toward finalizing the form sheets and documentation
   for feedthrough construction.  A `postmortem' should be held after FT0,
   the documentation rewritten, and any final adjustments made during
   FT1 construction.  Any remaining database issues should be handled
   in a similar manner.

*) Pierre Imbert has requested pictures of one of our rusting pigtails.
   One of the rusty pigtails was sent to Christian Zeitnitz, but we 
   still have one other.  Pof will take care of this.

Agenda for next week:
^^^^^^^^^^^^^^^^^^^^^
- Milestones
- FT0 construction update
- Purging and LN2 filtering during the cold tests
- AOB