Re: [fluka-discuss]: usryield

From: Francesco Cerutti <>
Date: Sun, 3 May 2015 09:00:34 +0200

Dear Bo Yang,

first of all you did not score dose, but photon fluence (in USRYIELD you
asked for PHOTON). In this respect, your AUXSCORE card is meaningless,
since there you further filter on PHOTON, which is useless, and you invoke
a conversion coefficient set that makes sense only if associated to
DOSE-EQ scoring, as clearly pointed out in the manual (AUXSCORE's SDUM).

Now, for your 200 MeV electron beam impinging on a ~3mm tantalum target,
the expected photon angular distribution is very forward peaked (as you
can realize by scoring as a function of angle, using more than the
single bin you asked for kinetic energy). Therefore it is pretty normal
that you see something at zero deg and nothing beyond 40 deg, which is
where you inspect with the other USRYIELD detectors.

Best regards


Francesco Cerutti
CH-1211 Geneva 23
tel. ++41 22 7678962
fax ++41 22 7668854

On Fri, 1 May 2015, 杨博 wrote:

> Hi,every Fluka users
>   I runned into a small question using usyield. I  tried to use usyield to
> score photon dose at different polar angles under the condition of 200MeV
> electron hitting high-Z taregt. The result at 0 degree seems normal,but the
> results at other angles shows 0. I double-checked my input file and did not
> find mistake. I hope someone could help me to check my input files and give
> me some suggestions. The input files and results are attached. Thanks in
> advance.  
> Bo Yang  

You can manage unsubscription from this mailing list at
Received on Sun May 03 2015 - 10:41:55 CEST

This archive was generated by hypermail 2.3.0 : Sun May 03 2015 - 10:41:58 CEST