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

From: lyuhuang <12300200032_at_fudan.edu.cn>
Date: Wed, 11 May 2016 23:28:34 +0800 (GMT+08:00)

Dear luigi
Thank you so much for you advice!It is helpful!
i want to use fluka to simulate the radiation enhancement of nanogold film irradiated by proton,but as you said nano meter scale is not supported,it is doomed to fail in fluka. So i am lucky to be informed of this early so that lots of unpaid efforts can be avoided.I got to know that geant4 is more powerful in simulating this kind of experiment,like DNA damage of radiation or nano meter scale experiment. i want to use geant4 to finish my work. Can you give me some guides in using geant4 or some materials to learn it quickily?


Thank you very much!


Best wishes!lyuhuang



-----原始邮件-----
发件人:"Luigi Salvatore Esposito" <luigi.salvatore.esposito_at_cern.ch>
发送时间:2016-05-11 20:11:31 (星期三)
收件人: lyuhuang <12300200032_at_fudan.edu.cn>
抄送: "fluka-discuss_at_fluka.org" <fluka-discuss_at_fluka.org>
主题: Re: [fluka-discuss]: Dose calculation of Proton!PLEASE HELP ME!

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 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
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> 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 - 18:59:37 CEST

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