[fluka-discuss]: RE: suppress transport of secondary particles

From: Joachim Vollaire <joachim.vollaire_at_cern.ch>
Date: Mon, 16 Jun 2014 07:29:10 +0000

Dear Ana,

I am not sure there is a straightforward way to achieve what you want as in reality dose is ultimately deposited by electrons and positrons. Still I understand that what you want is the origin of those electrons/positions. In that case what you would need to have the information on the "parent particles" when transporting secondary. To do so you would need to use the user routine : stuprf routine. Please look at the manual and advanced FLUKA course material for details.

https://www.fluka.org/free_download/course/triumf2012/Lectures/AdvancedUserRoutines2012.pdf


Greetings
Joachim


From: Ferreira De Almeida Lourenco, Ana [mailto:am.lourenco_at_ucl.ac.uk]
Sent: 04 June 2014 16:33
To: Joachim Vollaire; fluka-discuss_at_fluka.org
Subject: RE: suppress transport of secondary particles


Dear Joachim and all



Many thanks for your reply. That makes lots of sense...



Is it is possible to score what I want? Since I suppressed the transport of my secondary particles, I would like to know how many secondary particles are being generated and the energy they deposit?



Many thanks!

Ana



________________________________
De: Joachim Vollaire <joachim.vollaire_at_cern.ch<mailto:joachim.vollaire_at_cern.ch>>
Enviado: quarta-feira, 4 de Junho de 2014 07:33
Para: Ferreira De Almeida Lourenco, Ana; fluka-discuss_at_fluka.org<mailto:fluka-discuss_at_fluka.org>
Assunto: RE: suppress transport of secondary particles

Dear Ana

The calculation of the fluence with the USTRACK card is based on a track length estimator. This mean for let's say TRITON, the length of the paths of all TRITON particles crossing the region where you score the USRTRACK are added and the sum is divided by the region volume.

Thus if you are not transporting the particles, it makes sense not to have only zero values in the corresponding USTRACK.

Cheers
Joachim

From: owner-fluka-discuss_at_mi.infn.it<mailto:owner-fluka-discuss_at_mi.infn.it> [mailto:owner-fluka-discuss_at_mi.infn.it] On Behalf Of Ferreira De Almeida Lourenco, Ana
Sent: 03 June 2014 20:42
To: fluka-discuss_at_fluka.org<mailto:fluka-discuss_at_fluka.org>
Subject: [fluka-discuss]: suppress transport of secondary particles


Dear all



I'm comparing FLUKA with an analytic model that simulates a proton beam on a graphite target. This analytic model does not considers scattering and energy straggling and energy loss is calculated in the continuous slowing down approximation. Also, energy given to secondary charged particles from non-elastic nuclear interactions are deposited on the spot where are created (no transport).



I'm using a DISCARD, EMF, EMFCUT, DELRARAY and THRESHOL card in order to simulate this and I'm scoring fluence differential in energy using a USRTRACK card for different secondary particles, like deuterons, tritons, and alpha particles.



I probably misunderstood what the cards do but when I look at my results I don't get any fluence from secondary particles and I don't understand why since I just suppressed the transport of particles and not its production. Does anyone know why I'm getting this results?



Please find attached my inp and flair file.



Many thanks,

Ana
Received on Mon Jun 16 2014 - 10:50:12 CEST

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