Re: [fluka-discuss]: How to kill secondary electrons?

From: <Andrea.Mairani_at_mi.infn.it>
Date: Sun, 26 Jan 2014 12:49:12 +0100

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 Sun Jan 26 2014 - 14:04:33 CET

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