Re: [fluka-discuss]: Dose calculation of Proton!PLEASE HELP ME!

From: Luigi Salvatore Esposito <luigi.salvatore.esposito_at_cern.ch>
Date: Wed, 11 May 2016 12:11:31 +0000

Dear Lyuhuang,
it’s not clear what is the problem you have come across.

In any case, here are some comments/advices:
1) nanometer scale is not supposed to be used with FLUKA (as stated in this answer<http://www.fluka.org/web_archive/earchive/new-fluka-discuss/5902.html> on the mailing list by one FLUKA author)
2) for the Bragg peak characterisation, I would recommend you to use USRBIN with WHAT(2) = ENERGY (or DOSE)
3) please refer to the slides about scoring from the last introductory course<https://indico.cern.ch/event/442634/timetable/#all>
4) I would also suggest you to go through other presentations at the course, in particular about “installation and running”,
since the message about the random file points to a running issue.

Hope this could help.
Best regards, luigi


On 11 May 2016, at 12:45, lyuhuang <12300200032_at_fudan.edu.cn<mailto:12300200032_at_fudan.edu.cn>> wrote:

Hi everyone!

---Please help me!here are my confusions:

***i am now simulating 100MV proton interact with 20nm 20um 20mm gold FILM to require dose data,and I also need to add some water in front of the gold film to ensure that the bragg peak is right on the flim. but as a beginner in fluka, it is not easy to handle this problem by reading manual.sometimes it reports "the random files dont exit" when i use DEFAULT-PRECISION and URSBIN USRTRACK and i dont know why this happened.
Can you give some guides on which cards is proper to solve this problem?or some reason for "random file don·t exit"

***Another confusion is the difference between URSTRACK and URSBDX:
  URSTRACK:define a detector for a track-length fluence estimator
  URSBDX:for define a detector for a boundary crosing fluence or current estimator
In the given example.inp, both are used to require fluence,and the result show the all region (x;0-50) results,but URSTRACK just detect the crossing fluence,how can it get the all range data?



Thanks a lots!


Best wishes!







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Received on Wed May 11 2016 - 15:47:15 CEST

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