Date: Sun, 21 Feb 2016 20:41:26 +0300
On 21.02.2016 14:07, lzfneu wrote:
> Dear Mikhail,
>
> Thanks for you respond, I have followed you instructions to make a
> correction of my input file and the refraction coefficient of the
> GLASS material changes to equal 1.5. However, I still cannnot collect
> any Cherenkov light in the left side of the glass material. could you
> please help me to check it? I have attatched the corrected input file
> and source.f file in the attatchment. Thanks in advance !
>
> Best regards
> Zhefu Lee
>
> ------------------------------------------------------------------------
> Subject: Re: [fluka-discuss]: Question about Cherenkov light
> To: lzfneu_at_live.com; fluka-discuss_at_fluka.org
> From: pmk_at_ihep.ru
> Date: Sun, 21 Feb 2016 11:25:08 +0300
>
> On 21.02.2016 07:27, lzfneu wrote:
>
> Dear all,
>
> I want to collect the Cherenkov light in the left side of my
> geometry for electron as one degree incident angular into glass
> fiber. I consulted the example in the maunual and made a
> modification, but i cannot collect any light.
> I am new in this field and have attatched the input file and
> source.f file in the attatchment.
> could anyone help me? Thanks in advance.
>
> Zhefu Lee
>
> Dear Zhefu Lee,
>
> 1. You have an error in your geometry definition (BLKBODY region).
>
> must be
> *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....
> ASSIGNMA BLCKHOLE BLKBODY
>
> 2. Delete EMF and PHOTONUC cards.
>
> 3. Are you sure that the refraction coefficient of the GLASS material
> equals 1? I don't thick you will get any results with such value.
>
> 4. Try increase threshold for electrons in case of very long
> simulation time.
>
> Best regards
> Mikhail
Dear Zhefu Lee,
I have tried to run your input with a very high electron production cut
(2.0 GeV). It will take several hours to complete the simulation with
lower threshold.
*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....
EMFCUT -2.0 0.1 GLASS PROD-CUT
The USRBDX card is just for testing.
*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....
USRBDX -1. OPTIPHOT -21. ar vac 160000.TEST
USRBDX 1.5E-8 1.E-9 100.1.57079633 0.0 1. &
Best regards.
Mikhail
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(image/jpeg attachment: glass_21_plot.jpg)