X-Message-Number: 25384 From: Date: Thu, 23 Dec 2004 01:52:53 EST Subject: Re: cryostats From: > > For maximum thermal efficiency, he needs a cylindrical design with support > only at the top. Some of our older cryostats are rectangular, with internal > > bracing, and were good enough, but boil-off is lower with top-support > cylinders. Ok, so, if I build a cryostat, it will be cylindrical. I have some months before finalizing the desing. It will be first used for the second experimental set with the NMR testbed, when the HEMT low noise receptor will be built. For now, I am only at the procurement level for the first demonstrator. The most pricey elements will not be paid before March 2005 because of more urging expense before. There is then a two months delivery waiting time. The cryostat would be used only next summer. I don't work anymore, so I have some free time for such projects. My hope ? To have a second generation He3 demonstrator giving one dimensional "imaging" at the micrometer level one year from now. Yvan Bozzonetti. Content-Type: text/html; charset="US-ASCII" [ AUTOMATICALLY SKIPPING HTML ENCODING! ] Rate This Message: http://www.cryonet.org/cgi-bin/rate.cgi?msg=25384