Dear Bo Yang,
I saw that you modified your old problem with high energy electrons, and you followed the suggestions given by Francesco in
http://www.fluka.org/web_archive/earchive/new-fluka-discuss/7866.html
Think that now your problem is different! You have a 10 MeV electron beam and your low-energy shower is laterally contained quite well in your tantalum target, with has a radius equal to its length (~3 mm).
You can see very well this by adding for example a USRBIN card and scoring the DOSE-EQ (or simply the particle fluence) around the target, in the R-z plane. I suggest you to do it as exercise, in order to understand your angular distribution. In addition ,maybe you can use finer angular bins.
Regards,
Anna
----------------------------------------------------
Anna Ferrari
Institute of Radiation Physics
Helmholtz-Zentrum Dresden-Rossendorf
PF 510119 - 01314 Dresden (Germany)
Tel. +49 (0)351 260 2872
a.ferrari_at_hzdr.de
http://www.hzdr.de <
http://www.hzdr.de/>
Vorstand: Prof. Dr. Dr. h. c. Roland Sauerbrey, Prof. Dr. Dr. h. c. Peter Joehnk
Vereinsregister: VR 1693 beim Amtsgericht Dresden
Von: owner-fluka-discuss_at_mi.infn.it [mailto:owner-fluka-discuss_at_mi.infn.it] Im Auftrag von ??
Gesendet: Montag, 11. Mai 2015 14:53
An: fluka-discuss_at_fluka.org
Betreff: [fluka-discuss]: USRYIELD
Dear Fluka users，
I have a small question using usyield. I tried to use usryield to score photon dose at different polar angles under the condition of 10MeV electron hitting high-Z target. But except at 0 degree ,the results at other angles shows 0.
my input file and results are attached. So I wonder if usryield can be used to score the angular dose distribution or something else in my input files is not corrected. Actually I want to study the angular dose distribution around the target.
If usryield can not do it , are there any other practical methods? Thank you very much.
Bo yang
TITLE
Hard X-ray generated by electron-Gold collisions
* yangbo 2013/10/22
* --+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
DEFAULTS PRECISIO
* --+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----*
BEAM -0.01 0.0 0.0 0.0 0.0 0.0ELECTRON
BEAMPOS 0.0 0.0 -0.0001 0.0 0.0
* --+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----*
GEOBEGIN 0.0 COMBNAME
0 0 only scoring spheres
* --+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
RPP Blabox -5000000.0 +5000000.0 -5000000.0 +5000000.0 -5000000.0 +5000000.0
RPP Vacbox -1000000.0 +1000000.0 -1000000.0 +1000000.0 -1000000.0 +1000000.0
RCC TARGET 0. 0. 0. 0. 0. 0.28 0.28
SPH BALL 0. 0. 0. 100.
END
* -reg-----or-----or-----or-----or-----or-----or-----or-----or-----or-----
BL1 5 +Blabox -Vacbox
VA2 5 +Vacbox -BALL
TC3 5 +TARGET
SP4 5 +BALL -TARGET
END
GEOEND
* --+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----*
ASSIGNMA BLCKHOLE BL1
ASSIGNMA VACUUM VA2
ASSIGNMA TANTALUM TC3
ASSIGNMA VACUUM SP4
* --+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----*
EMF-BIAS 1022. 0.0 0.0 TC3 TC3 0.0
EMFCUT -1.0E-5 1.0E-6 0.0 VACUUM TANTALUM PROD-CUT
EMFCUT -1.0E-5 1.0E-6 0.0 TC3 SP4
* Scoring *
* --+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----*
USRYIELD 114. DOSE-EQ -64. SP4 VA2 1.Pho6
USRYIELD 0.8 0.0 5. 0.01 0.0 6.&
AUXSCORE USRYIELD PHOTON Pho6 Pho6 EWT74
* --+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----*
RANDOMIZ 1. 139.
START 100000000.
STOP
# Detector n: 1 Pho6
# N. of x1 intervals 5
0.000000 0.1600000 11412.72 6.9665097E-02
0.1600000 0.3200000 0.000000 0.000000
0.3200000 0.4800000 0.000000 0.000000
0.4800000 0.6400000 0.000000 0.000000
0.6400000 0.8000000 0.000000 0.000000
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Received on Tue May 12 2015 - 13:03:58 CEST