Minutes of feedthrough meeting of 23 October, 2000.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Present: GV, AD, PB, Pof, TH, RL, MLenc, MGF, RKK, MLef

*) Milestones:

	- The T51 and T52 pigtail cables from the 11 October batch
	  from Orsay have been tested.

	- FT01 was removed from the cold test station.  Final
	  electrical tests will commence this week.

*) While cableing FT02, a vacuum cable was found that had
   several pairs of opposite channels shorting together.  These
   shorts occur only when the cable is plugged into some (not
   all) pincarrier slots.  We believe that we have identified
   that the short is occuring in the region between the mini rod
   housing and center spacer (the piece that lies between the
   two stripline circuits and pivots on a single pin).  By
   placing a piece of kapton between the center spacer and one
   stripline circuit before insertion into the pincarrier, the
   shorts do not occur.  The shorts do occur, however, as the
   kapton is retracted.

   The cable has been returned to FCI for examination, along with
   a PCT pincarrier (which is to be returned!) to reproduce the
   fault.  BNL has also been alerted.

*) AD and GV will take all remaining funnels and flanges to
   TRIUMF this week to be cleaned in the ultrasonic bath.
   After this trip, only the last eight remaining bellows
   will require cleaning.

*) Michel will contact Chris Oram regarding the dead end we have
   reached in the LV warm cable design.

*) PB will arrange for SM to weld together an unused funnel base
   and upper funnel tube as weld samples for TIS.  The welds
   will also be inspected locally (Vancouver) before being sent
   to CERN.

*) PB and TH will assemble a folder of all past TIS tests, 
   correspondences, etc.

*) Tom Muller sent an email statine that Glasseal expects HCC to 
   have a second machine making our parts by mid November.

*) Rather than ordering small samples, Mark will order from CERN 
   the whole lot of heater wire and shrink tube once the wire
   lengths have been finalized.

*) The drawing and procurment of the fuse block circuit has been 
   turned over to the UVIC electronics shop.

*) Mark will revisit the shipping crate design, perhaps by the
   end of this week???

*) Arrangments for the dye penetrant tests for FT00 and FT01 
   should be made.  Greg will look after performing the ferrite
   tests on FT00 and FT01.

*) Aboud has notified BNL that the drawings show the pedestal holes
   to be rotated from their correct positions.  The question
   regarding the apparent RF leaks from the pedestal holes over
   the bolts in the bolt ring still remains, although Aboud claims 
   that the holes are there for access to the bolt-ring bolts.

*) BNL plans to purchase PT100 temperature probes, two pair
   per feedthrough, at US$44 each.  The UVIC temperature probes
   would be electrically identical, but with a slightly different
   geometry.  BNL apparently prefers 3-wire probes, however
   Allain Gonidec prefers that 4-wire probes be used due to the
   long length.  This should be understood and sorted out before
   ordering, as well as further consultations with BNL, Allain
   Gonidec, and Christian Zeitnitz (slow controls).

*) Terry pointed out that we should obtain a temperature probe
   readout like those to be used at CERN so that we can carry
   our our own tests.

*) Michel confirmed that UVIC will be providing the elastomer 
   O-rings (between the seal ring and cryostat chimney) and the 
   RF seals (between the bolt ring and the cryostat chimney). 
   We should propose the specifics of what we intend to purchase
   and then seek feedback from those concerned.  Aboud should
   also be consulted regarding the packaging and shipping details
   for these items.

*) GV and AD will be attending a Labview course in Vancouver
   on 4,5,6 Dec.

Agenda for next week:
^^^^^^^^^^^^^^^^^^^^^
- Milestones
- vacuum cable issues
- heater / temp probe update
- plans for the week
- AOB