Re: Time info & collision tape

From: Giuseppe Battistoni (
Date: Mon Jun 18 2007 - 14:52:28 CEST

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    Hi Chris,
    One way to obtain what you need in the collision tape is to
    add in the write statements of routine mgdraw.f (activated by USERDUMP)
    the content of variable ATRACK.
    This is exactly the "age" of the
    current particle expressed in seconds since the start of primary
    transport, supposed at t=0.
    ATRACK is contained in the TRACKR common block, in the (TRACKR) include
    file, which is located inside $FLUPRO/flukapro/. This include files has
    explanation comments at the beginning.


    On Mon, 18 Jun 2007, Chris Theis wrote:

    > Hello all,
    > I would like to look at the evolution of showers and thus, I'd need some
    > time dependent scoring. From the manual I know that for USRBINs time
    > dependent scoring is available via the TCQUENCH card. However, what I
    > would need is some time information in the collision tape. In general
    > the collision tape contains all trajectory segments of a track and I
    > would need some time information for each segment. For example at which
    > time (with respect to the start time of the associated primary source
    > particle being t=0) the current particle reached the specific segment
    > point of the track.
    > In the manual I found no option to obtain something like this with the
    > standard scoring options, but probably I've missed it. Does any of you
    > know if there is such an option?
    > Otherwise, internally the code has to keep track of the "current" time
    > with respect to the start of the primary's history. Could anybody tell
    > me how to access this information?
    > Thanks for your help
    > Chris
    > ------------------------------------------------------------------------
    > --
    > Chris Theis
    > CERN/SC-RP - European Organization for Nuclear Research
    > 1211 Geneva 23, Switzerland
    > Phone: +41 22 767 8069 Office: 892-2A-015
    > e-mail: www:
    > ------------------------------------------------------------------------

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