[Halld-tracking-hw] glue in drift chambers

[Curtis A. Meyer]

We have found that the glue has been used to seal the gas volumes in the 
Belle
drift chamber as well as the ATLAS muon chambers. A quick search seems to
indicate that it is pretty commonly used. We would not have this glue in 
contact with
electrical connections, just sealing gas volumes. As far as I can tell 
from the literature,
it has been successfully used in a number of chambers.

    Thanks -- Curtis
On 10/5/11 1:41 PM, wcrahen wrote:
> I have no information on DP-460. I took a look at NASAs outgassing 
> list, and it isn't there. One additional thing you need to consider in 
> drift chambers is that some conduct better than others (some kind of a 
> surface moisture effect?), at least until they dry out.We tried 
> Epolite to fix our wires (previous was Epon) and saw higher currents.
>
> Curtis A. Meyer wrote:
>> Does anyone have any experience with using scotch weld DP-460 glue
>> in gaseous chambers. Mechanically, it appears far superior for gluing
>> windows and shells than the DP-190 that we have been using, but I
>> am very reluctant to put an untested substance in the chamber, even if
>> it is only in contact with the exhaust gas.
>>
>>     Curtis
>>


-- 
Prof. Curtis A. Meyer		Department of Physics
Phone:	(412) 268-2745		Carnegie Mellon University
Fax:	(412) 681-0648		Pittsburgh PA 15213-3890
cmeyer at ernest.phys.cmu.edu	http://www.curtismeyer.com/