Dear Andrea,
Thanks for your reply.
However,you know secondary electrons energy is 0~50 eV.In the Fluka,the present lowest transport limit for electrons is 1 KeV.Meanwhile,Default: the e+e- transport cutoff is set equal to the production threshold for discrete electron interactions.In other words,the production threshold for electrons is 1 KeV,which is larger than secondary electrons energy.In this case,Could I kill secondary electrons?
Best Regards
Chen Yuan
> -----Original E-mail-----
> From: Andrea.Mairani_at_mi.infn.it
> Sent Time: 2014-1-26 19:49:12
> To: yyc2011_at_mail.ustc.edu.cn
> Cc: fluka-discuss_at_fluka.org
> Subject: Re: [fluka-discuss]: How to kill secondary electrons?
>
> Dear Chen,
> as already mentioned by Vasilis in his previous post:
> "You can only play with the thresholds EMFCUT to kill secondary electrons"
> For example:
> EMF card for SDUM = PROD-CUT
> |WHAT(1)| = energy threshold for electron and positron PRODUCTION in GeV:
> > 0.0 : energy threshold for electron and positron production is
> expressed as total energy (kinetic plus rest mass)
> < 0.0 : energy threshold for electron and positron production is
> expressed as kinetic energy
>
> EMF card for For SDUM = blank
> |WHAT(1)| = electron and positron TRANSPORT energy cutoff in GeV.
> WHAT(1) > 0.0 : electron and positron cutoff is expressed as total
> energy (kinetic plus rest mass)
> < 0.0 : electron and positron transport cutoff is expressed as
> kinetic energy
> = 0.0 : ignored
> This value can be overridden in user routine UBSSET by assigning
> a value to variable ELECUT.
> Default: the e+e- transport cutoff is set equal to the
> production
> threshold for discrete electron interactions
>
>
> Please read carefully the explanation of the EMF card
> http://www.fluka.org/fluka.php?id=man_onl&sub=27 and the related examples.
>
> Best Regards,
> Andrea
>
>
>
>
> > Dear Fluka users,
> >
> > If I want to kill secondary electrons,what should I do? Could you tell
> > me in detail or could you give me a simple example?
> > Thanks for any suggestion.
> >
> > Best Regards
> > Chen Yuan
> >
> >
> >
> >
> >
> >> -----Original E-mail-----
> >> From: "Vasilis Vlachoudis" <Vasilis.Vlachoudis_at_cern.ch>
> >> Sent Time: 2014-1-10 22:48:21
> >> To: "yyc2011_at_mail.ustc.edu.cn" <yyc2011_at_mail.ustc.edu.cn>,
> >> "fluka-discuss_at_fluka.org" <fluka-discuss_at_fluka.org>
> >> Cc:
> >> Subject: RE: [fluka-discuss]: Exchange the lower bound of the region
> >> with the upper bound of the region in EMFCUT
> >>
> >> Hi Chen,
> >>
> >> No you cannot exchange the upper/lower bound the order should be the
> >> same as they appear in the input file.
> >> Always verify in the output <inputname>001.out that the thresholds
> >> understood by the code are the ones you wanted.
> >> Concerning your other emails. Use USRBIN with binary output and to be
> >> able to process the file and plot the results.
> >> You can only play with the thresholds EMFCUT to kill secondary electrons
> >>
> >> Look the flair tutorial http://www.fluka.org/flair/flair_basic1.pdf
> >> and the course slides especially the one on scoring
> >> https://www.fluka.org/free_download/course/dresden2013/Lectures/07_Scoring_1013.pdf
> >>
> >> Vasilis
> >>
> >>
> >> ________________________________________
> >> From: owner-fluka-discuss_at_mi.infn.it [owner-fluka-discuss_at_mi.infn.it] on
> >> behalf of yyc2011_at_mail.ustc.edu.cn [yyc2011_at_mail.ustc.edu.cn]
> >> Sent: 08 January 2014 03:40
> >> To: fluka-discuss_at_fluka.org
> >> Subject: [fluka-discuss]: Exchange the lower bound of the region with
> >> the upper bound of the region in EMFCUT
> >>
> >> Dear everyone,
> >>
> >> When I use EMFCUT command to set electron transport energy cutoff,Can
> >> I exchange the lower bound of the region with the upper bound of the
> >> region in EMFCUT?The attachment is my input file.The EMFCUT is set as
> >> follows.
> >> EMFCUT -0.00001 0.000001 VOID left
> >> When I exchange the lower bound of the region with the upper bound of
> >> the region,the EMFCUT is set as follows.
> >> EMFCUT -0.00001 0.000001 left VOID
> >> I find the result becomes quite different.For this result,I can't
> >> understand.
> >> So,
> >> (1)Could I exchange the lower bound of the region with the upper bound
> >> of the region in EMFCUT?And Why?
> >> (2)Could you give me a simple schematic plot to explain which is the the
> >> lower bound of the region and which is the upper bound of the region?
> >>
> >> Best Regards
> >> Chen Yuan
> >>
> >>
> >>
> >
>
>
Received on Mon Feb 10 2014 - 04:09:34 CET