[fluka-discuss]: ROTPRBIN usage

From: Oscar Frasciello <oscar.frasciello_at_lnf.infn.it>
Date: Mon, 06 Jul 2015 11:05:47 +0200

Dear FLUKA experts,
I'm trying to put a USRBIN grid aligned with the rotated shielding wall
of the geometry described in the attached input file. Up to my FLUKA
ROTPRBIN card usage understanding, I applied the rotation rot5 to the
needed USRBIN (0n and 1n). Of course the rotation is the same applied to
the rotated wall. The scored outcomes are absolutely not consistent with
the Physics of the problem, whereas a control USRBIN (2n) in which
appropriate coordinates where manually set gives correct results. My
first hint was that ROTDEFI card could not be applied to catesian binned
USRBIN, but a read in FLUKA MANUAL (7.20, card ROT-DEFI) that:

             "FLUKA binnings (spatial meshes independent of the problem
geometry,
             designed to score average or event-by-event quantities) are
             generally defined as Cartesian structures parallel to the
             coordinate axes, or as cylindrical structures parallel to the
             z-axis. However, it is possible to define binnings with any
             arbitrary position and direction in space, by means of
             transformations described by commands ROT-DEFIni and ROTPRBIN.
             Command ROT-DEFIni defines rotations/translations to be applied
             to binnings (requested by the user by means of EVENTBIN or
USRBIN)."

My guess is that for some reason ROTPRBIN is not correctly working. What
am I missing? Is there anything I am wrongly understanding?

Best regards,
Oscar

-- 
Oscar Frasciello
Istituto Nazionale di Fisica Nucleare
Laboratori Nazionali di Frascati
Accelerator Division
Via Enrico Fermi 40
00044 Frascati (RM) Italy
Tel. office: +39 06 9403 2710
Tel. Tenocode: +39 06 9403 8114
Fax Accelerator Division: +39 06 94032256
email: oscar.frasciello_at_lnf.infn.it



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Received on Mon Jul 06 2015 - 13:01:24 CEST

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