X-Message-Number: 22620
From: 
Date: Wed, 1 Oct 2003 12:44:37 EDT
Subject: High temperature cryostat (call to desing)

Hi,

Some months from now, I may have the possibility to build and operate a 
cryostat. There are two possibilities:
Buy a used dewar and work with LN2.
Build a new system working at higher temperature, for example with liquid 
freon. I know there have been some talks about building such a system. Some 

concepts have been published, but I have not at hand the drawings of a system 
ready 
to be built.

If there is on Cryonet some person interested to submit such a concept, pleas 
let me know.

One idea: The system could use both, an electric cooling circuit and a 

thermal buffer in the form of an LN2 tank. The electric system could bring down
temperature from the room one to the dry ice domain and cold GN2 could then 
liquefy the freon...

Any idea, comments suggestions?

Yvan Bozzonetti.


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