V-selector

[Peter Link]

Dear Kristian,
receiving the new release 1.1 of mcstas I was happy to find the new
V-selector component. As you remember I sent you my own component
definition for that in march,99. Looking at your solution I do not
really see, why you use an analytical formula ( with approximations) for
the transmission instead a MC-choice of the phase angle at the entrance
position of the selector. To my feeling the advantage of the latter is
that there's no further approximation neccessary ( apart from having a
really black absorber on the blades). On the other hand I think there's
no measureable change in the result, ??
As I'm looking to build more complicated versions of velocity selectors
I would be glad to discuss this difference with you.
Best regards Peter 
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Dr. P. Link
IPC Uni Göttingen
Außenstelle Garching
Neue Forschungs- Neutronenquelle Garching
ZBE- FRM II- Bau
85747 Garching

Tel. 089 2891 4622
Fax. 089 2895 4622
mailto: plink at physik.tu-muenchen.de
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