[Sneap] Coating CsI Crystal

[Steski, Dannie B]

Dear John
 
I don't have the crystal in hand yet but my understanding is that there will not be any coating.
 
That is why I am concerned about cleaning. I am worried that if the surface is dirty the Al will start to peel off.
 
Dannie

________________________________

From: sneap-bounces at tunl.duke.edu on behalf of John Stoner
Sent: Thu 2/26/2009 5:59 PM
To: Symposium of Northeastern Accelerator Personnel
Subject: Re: [Sneap] Coating CsI Crystal






Dear SNEAP:

CsI is very deliquescent - it absorbs water when exposed to air.  Does your
crystal have a coating to prevent this?  Coating with aluminum is an
entirely different problem in the two cases: with or without such a
protective coating.

John Stoner
ACF-Metals



on 2/26/09 8:43 AM, Dannie Steski at steski at bnl.gov wrote:

>
>
>
> Dear SNEAPers
>
> I have had a request to coat a CsI crystal with 50nm of Al. I have done it
> with other detectors but not CsI.
>
> Does any one have any experience doing this?
>
> Is there any special way to clean the surface of the Cs I crystal?
>
> Any advice would be appreciated.
>
> thanks
>
> Dannie
> *************************************************
> Dannie Steski
>
> Building 901A
> Brookhaven National Laboratory
> Upton, NY
> 11973
>
> Tel: 631-344-4581
> Fax: 631-344-4583
> Steski at bnl.gov
>
>
>
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