Re: Feedthru material

["Curtis A. Meyer" <cmeyer@ernest.phys.cmu.edu>]

Hi Tim -

  there were a number of concerns raised about Delrin and ageing. Noryl 
is a safe
material for a chamber. As per the glass filled poly carbonate, we will 
need to do
a bit of research.

   I think that we can arrange a time on Wed. or Thur. we just need to 
get the relevant
people on board.

  Curtis
Tim Whitlatch wrote:
> Hi Curtis,
>
> The delrin is cheaper as well as glass filled polycarbonate. We should 
> have a meeting Wednesday or Thursday to discuss info we received from 
> vendors recently.
>
> Tim
>
> Curtis A. Meyer wrote:
>> Hi Tim -
>>
>>   probably the main reason that we went with Noryl was that it was 
>> cheap, could
>> be bought in rods, and had been safely used in drift chambers before 
>> without aging
>> or out-gassing issues. I think the latter reason puts some limits on 
>> what we can choose
>> for material.
>>
>>     Curtis
>> Tim Whitlatch wrote:
>>> Hi Curtis,
>>>
>>> If another material other than Noryl is used, what are the 
>>> electrical requirements?
>>>
>>> 20V/mil dielectric strength?
>>> Max dielectric constant?
>>>
>>> Tim
>>>
>>
>>
>


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