Thanks a lot for the answer, I have tried to follow your example and the FLUKA documentation for USRYIELD. Still I get strange results. To test that everything works as I expect I have this simple setup:
A beam of 2 GeV pions going trough a 0.001 cm aliminium foil and I count the number of pions going trough the plane between the foil and the air around the foil. The inputfile is in the attachement. However it looks like I don't count any pions, this is the outputfile:
Yield n. 1 " " , generalized particle n. 14, from region n. 3 to region n. 2
user normalization: 1.0000E+00, adopted cross section (if any): 1.0000E+00 mb
linear 1st variable binning from 0.0000E+00 to 1.0000E+01 1 bins ( 1.0000E+01 wide)
2nd variable ranges from 0.0000E+00 to 1.0000E+01
1st variable is: Laboratory Total Energy
2nd variable is: Laboratory Total Energy
Data follow in a vector A(ie), format (1(5x,1p,10(1x,e11.4)))
6.9805-314
Please tell me what I am doing wrong.
________________________________
From: Santana, Mario [msantana_at_slac.stanford.edu]
Sent: 22 January 2016 03:25
To: Helga Holmestad; fluka-discuss_at_fluka.org
Subject: Re: Scoring number of particles going trough a plane
Hi Helga,
If what you want is to count the number of particles going through a surface, you are better off using USRYIELD card.
The following example is almost applicable to your case. You will have to replace ELECTRON by the type of particle that you want to count, and TARGET/SHIEL01 by the two regions that are separated by the counting plane.
If you don't want to count particles that result from showers, you could raise the threshold 0.000 to just below beam energy.
To normalize (in this example), multiply the result (shown in fort.21 after 'Data follow in a vector...' by (10.0-0.000)*(10.-0.0) to get total count of exiting particles per starting particle.
USRYIELD 1313. ELECTRON 21. TARGET SHIEL01 1.0TotEl
USRYIELD 10. 0.000 1. 10. 0.0 3.0 &
Alternatively, you could also use mgdraw.f routine.
-Mario
________________________________
From: owner-fluka-discuss_at_mi.infn.it <owner-fluka-discuss_at_mi.infn.it> on behalf of Helga Holmestad <helga.holmestad_at_cern.ch>
Sent: Thursday, January 21, 2016 7:34 AM
To: fluka-discuss_at_fluka.org
Subject: [fluka-discuss]: Scoring number of particles going trough a plane
Hi
I have a setup with a beam going trough a degrader of aluminum. I want to check how many particles makes it trough the degrader, and is not stopped. So I have set up a scoring plane behind my degrader using the card USRBIN and EVENTBIN. I am only interested in the number of particles going trough this plane, how can I get USRBIN or another card to provide this information. Right now it looks like the length of the track is printed.
__________________________________________________________________________
You can manage unsubscription from this mailing list at
https://www.fluka.org/fluka.php?id=acc_info
Received on Fri Jan 22 2016 - 15:31:04 CET