From: Alberto Fasso' (fasso@SLAC.Stanford.EDU)
Date: Fri Jul 06 2007 - 14:12:35 CEST
> I need to define a particle source with circular diameter, emitting an
> particles according to an energy spectrum.
> The manual is not 100% clear on this issue, is the following approach
> - I define the gemetrical parameters of the source in what(4)and what(5) of
Actually, you need also what(6): otherwise, you get a beam with a rectangular
section. To get a circular section, define it as annular with internal
radius = 0.
And probably you need also what(3) to request an isotropic source (otherwise
you get a parallel source along z: is that what you want?)
> and in what(1) - what(3) of BEAMPOS (the particles will tracel in
> positive z-direction)
> - I sample the kinetic energy from my spectrum within source.f. The
> geometrical parameters are left untouched by source.f and are passed on to
> the code, which will generate a gemoetrically extendend source.
> Thank you for confirming or correcting this assumtion,
-- Alberto Fasso` SLAC-RP, MS 48, 2575 Sand Hill Road, Menlo Park CA 94025 Phone: (1 650) 926 4762 Fax: (1 650) 926 3569 firstname.lastname@example.org
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