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leakrate measurement of 4 chamber stack [message #1014]

Tue, 05 October 2004 18:31

Sascha Freuen
Messages: 9
Registered: August 2004
Location: Heidelberg PI

occasional visitor

From: *kip.uni-heidelberg.de

This measurement was done with 4 of the 6 testbeam chambers. They were put in the same order as they will be during testbeam.
Flowrate: 20 l/h

http://img85.exs.cx/img85/1254/leakrate_4_chamber_stack.gif

[Updated on: Wed, 06 October 2004 13:30]

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Re: leakrate measurement of 4 chamber stack [message #1016 is a reply to message #1014]

Tue, 05 October 2004 19:10

Chilo Garabatos
Messages: 12
Registered: August 2004
Location: GSI

occasional visitor

From: lxial22.gsi.de

Hello, Sasha, hello David,

When you evaluate the leak rate of this 4 chamber stack, you could check the consistency of this measurement with the measurements of the chambers alone plus the contribution of the interconnecting bellows; 2 of this bellows have an upper limit of 1.8 +- 0.3 ml/h, as I measured at GSI with Bernd's boxes.

About the speed of flushing, I have to check a few things at CERN to be able to answer. It will be probably difficult to beat Sasha, but we'll know after filling the small chambers.

Regards,
Chilo

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