X-Message-Number: 25367
Date: Tue, 21 Dec 2004 03:23:27 EST
Subject: Re: cryostats


> More generally, it seems to me not likely to be an efficient  use of time or 
> money to make them yourself. (There are also some hazards,  especially 
> allergies.) You should buy them--in your own country if possible,  imported 
> if 
> necessary. We (CI) no longer do our own fabrication, but outsource  them.
> If the animals you plan to use are smallish--say cat-sized  or smaller--you 
> can usually buy a new or used hard-vacuum type for a few  thousand, big 
> enough 
> for several animals.
> Of course, the main question is why you want your own cryostats. I can't  
> think of any current scenario in which it makes sense to try for a local or  
> private storage capability. 
Thank you for these informations.
Why to build a (some) cryostats? 
First I see as not secure to have all cryonics facilities in the same 

country. I think there must be some alternative solutions. A first step would be
Cryonics facility on this side of the pond, may be in UK. Unfortunately, the 
land cost is high here and the surface must be minimized. One solution is to 

build the cryostat in France and train people here in an animal only facility so
hat the UK site is for human storrage only. Fifty sq. meter would be 

Second, Cryonics could be a legal activity in France if it was done as a 

secondary purpose in a researche laboratory. This bring us to the last reason to
build a cryostat:

LN2 temperature could allows the use of high Q (low noise) superconducing 

antenna for a nuclear magnetic resonance detector using hyperpolarized gas such
Xe 129. This would be a key step in building a brain reader without having to 

struggle with hypercryogenic liquid helium. When turning to it in a later step,
LN2 intermediate blanketing will be a necessity anyway.

The cryostat would be big: Something as 2 x 2 x 3 m for the inside volume and 
3 x 3 x 3.5 m outside. The shelter model to build it had to be exchanged to 
permit a larger door!

I think this could be done at spring end, so that work could be done with 
open doors. This would limit the epoxy toxic effects. There is too a money 
problem: I have some debts to pay before buying tons of epoxy and fiberglass.

Yvan Bozzonetti.

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