Re: [fluka-discuss]: Dose measurements conversion using source file

From: Masoomeh Yarmohammadi <myarmohammadi_at_ipm.ir>
Date: Thu, 9 Mar 2017 16:16:24 +0330 (IRST)

Dear Mario,

Many thanks for your reply.

Regards,

Masoomeh Yarmohammadi Satri
Post-Doctoral Research Fellow, School of Particles and Accelerator, Institute for Research in Fundamental Sciences (IPM)
E-mail : myarmohammadi_at_ipm.ir, myarmoha_at_cern.ch

----- Original Message -----
From: "Mario Santana" <msantana_at_SLAC.Stanford.EDU>
To: "Masoomeh Yarmohammadi Satri" <masoomeh.yarmohammadi.satri_at_cern.ch>, "Boyu Meng" <boyu.meng_at_duke.edu>, fluka-discuss_at_fluka.org
Sent: Wednesday, March 8, 2017 9:32:52 PM
Subject: Re: [fluka-discuss]: Dose measurements conversion using source file




Hi,



FLUKA automatically takes cares of (built-in) biasing effects, so NO, you don’t have to multiply by a biasing factor.



-Mario




From: <owner-fluka-discuss_at_mi.infn.it> on behalf of Masoomeh Yarmohammadi Satri <masoomeh.yarmohammadi.satri_at_cern.ch>
Date: Wednesday, March 8, 2017 at 8:26 AM
To: Luigi Salvatore Esposito <luigi.salvatore.esposito_at_cern.ch>, Boyu Meng <boyu.meng_at_duke.edu>
Cc: fluka-discuss <fluka-discuss_at_fluka.org>
Subject: RE: [fluka-discuss]: Dose measurements conversion using source file





Dear Luigi and All,

I need to use biasing for improving the statistical error for the scored Dose equivalent after a concrete wall, then I can trust to the data. For converting the Dose Equivalent data from (pSv/primary) to microSv/h I used multiplication of this result by the number of electrons [current x time / (unit charge)]. Please let me know if I need to add the biasing as a factor to this multiplication.


The file is attached

Best regards,
Masoomeh







From: owner-fluka-discuss_at_mi.infn.it [owner-fluka-discuss_at_mi.infn.it] on behalf of Luigi Salvatore Esposito [luigi.salvatore.esposito_at_cern.ch]
Sent: 28 February 2017 12:28
To: Boyu Meng
Cc: fluka-discuss_at_fluka.org
Subject: Re: [fluka-discuss]: Dose measurements conversion using source file


Dear Boyu,


this is a two-step calculations.


You can find some insights (and warnings as well) in this thread


http://www.fluka.org/web_archive/earchive/new-fluka-discuss/5989.html


Following the recipe, you get dose per primary electron. Eventually you need to multiply this result by the number of electrons [current x time / (unit charge)]


to get your final result.


In case you need more guidance, please let us know.


Best, luigi








On 28 Feb 2017, at 05:17, Boyu Meng < boyu.meng_at_duke.edu > wrote:





Greetings, FLUKA experts

I am building a Monte Carlo simulation model for low energy x-ray dosimetry measurements.

Photon is generated by simulating a low energy electron beam hitting a target. I collected the photon spectrum and created a source file using the spectrum. Simulation using the source file is simulating photon source to improve the efficiency of the program. I use USERBIN X-Y-Z dose to score the dose. To my understanding the result of this simulation is going to give me dose/event which is dose /photon, but I need dose/mAs. However since I used a source file and simulation photons directly, the unit conversion is tricky. Has any other people had experience with this problem before?

Thank you very much for your help!

Sincerely,
Boyu
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Received on Thu Mar 09 2017 - 14:50:18 CET

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