Re: step size

From: Alberto Fasso' (fasso@SLAC.Stanford.EDU)
Date: Mon Dec 04 2006 - 17:16:00 CET

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    Use command LAM-BIAS (to enhance the probability of hadronic
    interactions) and/or EMF-BIAS with SDUM = LAMBEMF (to enhance
    the probability of electromagnetic interactions). Of course
    the weight of the secondaries issued from such interactions
    will be decreased by the program to correct for the biasing,
    so be careful to have MGDRAW to write it down together
    with the other particle properties, and take it into account in your


    On Mon, 4 Dec 2006, Olaf Hartmann wrote:

    > Hi all,
    > I'm using the MGDRAW subroutine to register all tracks escaping from my
    > target volume. The target, as it should be used in the experiment, is a
    > wire of 10 Ám diameter or a 1 mg/cm^2 foil. If I apply these dimensions,
    > I find only the "undisturbed" beam particles (no reaction). So, I
    > increased the dimensions, i.e. a wire of 1 cm diameter, and in this case
    > it looks like it should (I see reaction products). Is there a parameter
    > which I could change so that it works also with the 'delicate' dimensions?
    > Cheers,
    > Olaf.

    Alberto Fass˛
    SLAC-RP, MS 48, 2575 Sand Hill Road, Menlo Park CA 94025
    Phone: (1 650) 926 4762   Fax: (1 650) 926 3569

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