Dear Santana,
Thank you for your reply. As I told you, my interest is to simulate dose in Gy/min.
The target is now fixed yet. It should be a certain object such as bag, box, and etc. But for now lets say the absorbed dose in air. How can I calculate absorbed in Gy/min.
If I simulate a 10E15-16 primary particle number, it seems that simulation time will be so large, is there some way to simulate such kind of large primary numbers?
What if I reduce a number of primaries and do the same simulation. can we believe those results?
Thank you and sorry for your incovenience.
Regards,
Ho-seung Song
On Wed, Jun 3, 2015 at 10:16 PM, Santana, Mario <msantana_at_slac.stanford.edu> wrote:
Hi HoSeung,
Results are normalized per primary (in your case per incident electron).
Thus, to normalize your results per minute you need to multiply those by 7.5E12 x 250 * 60:
Results 7.5E12 e 250 pulse 60 s
----------- x --------------- x --------------- x -----------
e pulse s min
Please note that Gy is the unit for absorbed dose density [J/kg], so you should score it in your target of interest, not in air (unless you want to know the absorbed dose in air).
From: HoSeung Song < genesjp_at_skku.edu>
Date: Wednesday, June 3, 2015 7:26 AM
To: fluka-discuss < fluka-discuss_at_fluka.org>
Subject: [fluka-discuss]: Dose calculation (Unit: Gy/min)
Dear Fluka users,
I am conducting a simulation with 15 MeV electron beam to tunsgen target to generate photon and neutron. After the target, I put conical shape collimator to focus the photon. I want to calculate a photon dose (Gy/min) at the certain distance from the target (example: 1m, 2m, 3m and etc.).
1. For a input card, I used USRBIN (dose-eq), AUXSCORE (photon) to score the photon equivalent dose, and the unit is pSv/primary. Is this true?
The specification of the accelerator is as follows;
- number of electrons per pulse: 7.5*10^12
- pulse frequency: 250Hz
- pulse duration: 6us
With these parameters, I want to calculate a photon-dose (Gy/min) with FLUKA. I am a beginner of this program and this field. Can you tell me how to calculate Gy/min at certain point (or surface) with a little bit detail?
Thank you in advance.
Regards,
Ho-seung SONG
--
Amit Kumar
Scientist
Bhaha Atomic Research Centre
Mumbai
Phone No. : 022-25592841
Mobile Number: 9969799819
Alt. Email Id. amitkumar_at_barc.gov.in
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Received on Thu Jun 04 2015 - 08:14:12 CEST