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Feedback Re: Optical Surfaces and Sigma_Alpha 

Forum: Processes Involving Optical Photons
Re: Question Optical Surfaces and Sigma_Alpha (Wolfgang Lukas)
Re: Feedback Re: Optical Surfaces and Sigma_Alpha (Gumplinger Peter)
Re: Question Re: Optical Surfaces and Sigma_Alpha (Wolfgang Lukas)
Date: 01 Jul, 2009
From: Benton Pahlka <Benton Pahlka>

Hello,

Just my two cents:

I nearly always implement a physical gap between scintillators and wrappings and do not use the BACKPAINTED option (unless I'm dealing with liquid scintillators, which do not have gaps).

I do this because one will nearly always have gaps between scintillators and wrappings unless one decides to put some optical grease between them. In this case, I allow myself the option to put the grease in.

More importantly, I've found that for large scintillators (and *especially* long, thin bar geometries) the size of the gap plays a large role in the number of photons one collects due to total internal reflection.

Best regards,

Benton

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1 Feedback: Re: Optical Surfaces and Sigma_Alpha   (Gumplinger Peter - 02 Jul, 2009)
(_ Feedback: Re: Optical Surfaces and Sigma_Alpha   (Benton Pahlka - 03 Jul, 2009)
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