sPHENIX EMCal discussion

["Eric T." <thorslan AT illinois.edu>]

Hi Anne,

  Two of which, conflicting ideas here.  Two of the same grit or two of each of the 4 grits?

    Eric T.

On 10/18/2017 8:22 AM, Sickles, Anne M wrote:

Hi Eric and Craig,

I think that seems reasonable.  Eric could you order two?

Best,

Anne

On Oct 17, 2017, at 4:27 PM, woody <woody AT bnl.gov> wrote:

Hi Eric,
   From what I can see, this diffuser looks fine, but it's hard to say a priori how uniform the light output would be given the LED light source you would be using. Since they're not expensive, you might want to order several with different grit polishes and see how they look. They do seem to give reasonable overall transmission (~ 80%), so you could even try using two of them in tandem if necessary. The main thing will be to see how uniform the light distribution from the diffuser looks with the camera.

Cheers,
Craig

On 10/17/2017 3:42 PM, Eric T. wrote:

https://www.thorlabs.com/thorproduct.cfm?partnumber=DG100X100-1500

On 10/17/2017 2:34 PM, woody wrote:

This is one of the first sights that come up on a Google search of optical diffusers

https://www.newport.com/c/diffusers?xcid=goog-ppc-0113&gclid=CL_Lt5Wz-NYCFVhYDQodqwYOjw
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Anne Sickles

Assistant Professor

University of Illinois at Urbana Champaign sickles AT illinois.edu

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