Hello
Fluence results in the tab.lis file are given in units of
particles/GeV/primary averaged over the <emin, emax> interval of each
energy bin.
In order to get the number of particle in each energy interval, one has to
multiply the fluence/GeV by the width of the interval (Emax-Emin). The
energy-integrated fluence is the sum of (fluence_i *(emax-emin)_i) over
the bins.
Regards
Paola
> Dear all,
>
> Attachment are my xx_24_sum_lis and xx_24_tab.lis file based on USRBDX
> card. And tab.csv is my data processing file.
>
> I use USRBDX card with one way scoring the fluence, linear binning in
> energy and linear binning solid angle with 2*pi distribution and the area
> is 1.
>
> I have two questions to consult you, one is for the sum of particle
> numbers and another is for the average energy of the spectrum.
>
> 1) I have no idea, why the sum of particles numbers I calculate from
> xx_24_tab.lis file (0.0080471726) is different from that of the
> xx_24_sum.lis file :"(Tot. resp. (Part/pr) 0.1264325 +/- 2.278502
> %)", please see xx_24_tab.csv file.
>
> I multiply the first column (Energy) with the third column (fluence) in
> each line of xx_24_tab.lis file. I got the particle numbers of each
> corresponding energy. Then sum each single line of the particle numbers
> together, and the sum of particles is: "(Part/pr) 0.0083208421".
>
> 2) The average energy of the spectrum: I sum the energy multiply by
> particle numbers of each line, then divide by of the sum of the particle
> numbers. I got the average energy is 0.0056706183 GeV, please see
> xx_24_tab.csv file.
>
> I don't know why the particle numbers is different between I calculated
> and xx_24_sum.lis file, and dose the average energy I calculate right ?
>
> Any help will be appreciated and thanks in advance.
>
> Best regards,
>
> lzfneu
>
Paola Sala
INFN Milano
tel. Milano +39-0250317374
tel. CERN +41-227679148
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Received on Thu Apr 02 2020 - 19:20:05 CEST