Dear Agnieszka
I am not sure it really matters for your problem, however if I understand
your input correctly, you want to have Argon at 25 atm as sensitive gas,
you (correctly) set the gas pressure to 25 atm with MAT-PROP, but you left
the density in the corresponding material card to the one at 1 atm, which
is changing quite a bit the energy deposition.
Please forgive me if I misinterpreted something, I only gave a summary
look at your input.
Alfredo
+----------------------------------------------------------------------+
| Alfredo Ferrari || Tel.: +41.22.76.76119 |
| CERN-EN/STI || Fax.: +41.22.76.69474 |
| 1211 Geneva 23 || e-mail: Alfredo.Ferrari_at_cern.ch |
| Switzerland || |
+----------------------------------------------------------------------+
On Sun, 1 Jul 2018, Agnieszka Witkowska wrote:
> Dear Fluka Experts,
> I am trying to lead in Fluka real life experiment with usage of ionization
> chamber. I am measuring energy deposited in gas of the device. in real life
> experiment source of radiation was placed 2 meters from centre of ioniztion
> chamber.
>
> I assume that I do not know how to define correctly beam source to make it
> similar to real conditions. I defined monoenergic, rectangular beam with x
> and y beam 200cm to make sure that the whole device will be surrounded by
> radiation.
>
> I have obtained really strange results. With increasing energy the energy
> deposited in each simulation is increasing as well, what does not match with
> life experiments, as in some point no more electrons should be generated in
> gas.
>
> Can You please check my input file and advise what I am doing wrong? Or
> maybe I am missing some physics?
>
> Below I attached obtained results:
>
> beam energy [GeV]
> deposited energy
> 0,000059
> 1,79E-08
> 0,000186
> 2,68E-08
> 0,000667
> 5,73E-08
> 0,00117
> 8,85E-08
> 0,005
> 3,07E-07
> 0,01
> 5,11E-07
> 0,02
> 7,19E-07
> Best regards,
> Agnieszka
>
>
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Received on Tue Jul 03 2018 - 13:19:41 CEST