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Question Surface finish 

Keywords: surface finish
Forum: Processes Involving Optical Photons
Date: 01 Feb, 2002
From: Rui Bugalho de Moura <l45372@alfa.ist.utl.pt>

Hi everyone,

I'm not sure I've understand all aspects of surface finish. Even going through the G4OpBoundaryProcess.cc source file I have some doubts. I know what a polished or ground surface is. What I'm not sure is what a frontpaint and a back paint is.

1.Is a frontpaint a paint directly applied on the solid surface (like a house paint)?

2.Is a backpaint a reflector coating (some thin foil a few mircometers away from the actual volume surface)?

Imagine I want to test two diferent kinds of surface finish:

A)Polished surface with a difuse reflector coating (e.g. carbon foil) a few micrometers apart from the polished surface.

B)Same as A) but with a specular reflector (e.g. aluminium).

I'm changing surface finish interactively, using a CmdWithAnInteger and a method in my DetectorConstruction class named SetSurfaceFinish. This method takes an integer. In the method SetSurfaceFinish I simply assing the integer to a G4OpticalSurfaceFinish enumeration variable which I have in my Detector Construction class, (surfaceFinish = inputInteger). Is this a bad thing do?

Thank you for your attention and any comments that might help me.

Best regards,

Rui Moura

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1 Feedback: Re: Surface finish   (Gumplinger Peter - 04 Feb, 2002)
1 More: Re: Surface finish   (Rui Bugalho de Moura - 04 Feb, 2002)
2 None: Re: Surface finish   (Gumplinger Peter - 04 Feb, 2002)
1 None: Re: Surface finish   (Gumplinger Peter - 11 Feb, 2002)
(_ Ok: Re: Surface finish   (Rui Bugalho de Moura - 12 Feb, 2002)
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