Minutes of the Geneva AMS group meeting on Mar. 28, 2000
Fruitful meeting with Bart Verlaat and Rolf Siedlling last week. Bart proposed a new design of the thermal bars. There is still no prototype and it is needed vibration test to study the feasibility. Also it has been revisited the design of external planes (1 and 5). Bart is going to study globally teh thermal issues and its influence over the tracker design. A discussion about this item is foreseen for next week at the Tracker meeting.
Eric presented a transportation box prototype. Please send comments to Florian.
For the connectors there are no choice. Among the three possibilities: Omnetics, Canon or Airbone. All of them are almost identic (except colour and price).
HCC sent to production last Friday 24th. Delivery foreseen about mid June with the box. Next week AMS will send some mechanical prototype (just the box). Also about 10 naked chips to perform electrical test will be send asap, but not before 8 weeks. In the meantime a complete users manual will be written.
Divic has been testing the HCC signal transmission. If differential signals are transmitted everything is fine, but if there is only a single signal it appears some reflections (due to the fact that on TDR side the grounds are not closed). It seems it will not cause any problem but it will be checked with the detailed HCC specifications.
Batches from Itc-Irst. One month delay at least because of Csem . Tentatively
Only one enterprise (SICORELL) has answered positively about kapton. They are doing some preliminary studies trying to localize the problems.
E. Cortina, Mar, 28, 2000