[Halld-cal] acrylic sheets for Fcal monitoring system

[Paul Eugenio]

Hi,

Have tried Eljen?  I have purchased UVT acrylic sheets from them in the past.

Paul

--
Prof. Paul Eugenio
Department of Physics
Florida State University
Tallahassee, FL  32306

eugenio at fsu.edu
(850) 644-2585


On Jul 24, 2013, at 5:51 PM, Elton Smith <elton at jlab.org> wrote:

> Matt,
> 
> We are trying to converge on properties for the acrylic sheet for the 
> Fcal monitoring system that is available and affordable.  At first we 
> investigated the availability of UVT for two reasons
> 1) make sure there is good transmittance of the UV laser light
> 2) this material is environmentally more stable than UV absorbing 
> acrylic that yellows over time.
> 
> We have had no success with finding sources of UVT acrylic in 1/2" 
> thickness without ordering large batches. The UV-violet LED for the 
> monitoring system is at 405 nm, which is mostly within the transmission 
> window of UV absorbing acrylic. Also the tests in Athens were conducted 
> with UV absorbing plastic.  Therefore we are investigating options for 
> purchasing UV absorbing 1/2" plastic.
> 
> We will also need to adjust the clamps on the panes so that we 
> accommodate the use of 4'x8' sheets of material. It is unclear what the 
> availability is of larger sheets (e.g. 51"x51", which was used for 
> testing in Athens).
> 
> Let me know if there are any comments or concerns to this course of action.
> 
> Thanks, Elton.
> 
> -- 
> Elton Smith
> Jefferson Lab MS 12H5
> 12000 Jefferson Ave STE 16
> Newport News, VA 23606
> (757) 269-7625
> (757) 269-6331 fax
> 
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