AW: AW: Unusual increase in the background dose

Dear Dulitha,

You are still too close to the center of the beam. Use at least the bins
x = [-0.5, 0.5] and y = [-0.5,0.5] or more and you will see a nice
flat plateau in front of the beam.

Cheers, Florian

-----Urspr=FCngliche Nachricht-----
Von: hewad1dk_at_cmich.edu [mailto:hewad1dk_at_cmich.edu]=20
Gesendet: Freitag, 19. M=E4rz 2010 21:24
An: Sommerer, Florian
Cc: fluka-discuss_at_fluka.org
Betreff: Re: AW: Unusual increase in the background dose

Dear Florian,
Thank you for your reply. I did the suggested changes but still I'm =
getting the same results. I attached the 3-D plot.
here is my input file.

*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
TITLE
Proton Bragg peak.
*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
DEFAULTS 0.0 0.0 0.0 0.0 0.0 0.0 HADROTHE
BEAM -160.E-03 0.0 0.0 0.6 0.6 1.0 PROTON
BEAMPOS 0.0 0.0 -10.0
*
GEOBEGIN COMBNAME
  0 0 A simple Be target inside vacuum
RPP body1 -800.0 +800.0 -800.0 +800.0 -800.0 +800.0
RPP body2 -300.0 +300.0 -300.0 +300.0 -300.0 +300.0
RPP body3 -100.0 +100.0 -25.0 +25.0 0.0 +50.0
RPP body4 -5.0 +5.0 -5.0 +5.0 +0.0 +30.0
* plane to separate the upstream and downstream part of the target END
* black hole
regBH1 5 +body1 -body2
* vacuum around
regVA2 5 +body2 -body3 -body4
* Water target
regWa3 5 +body3 -body4
* Water detector
regWa4 5 +body4
END
GEOEND
*...+....1....+....2....+....3....+....4....+....5....+....6....+....7...+....8
MATERIAL 0.0 0.0 1.0 26.0 0.0 WATER
COMPOUND 1.0 OXYGEN 2.0 HYDROGEN WATER
*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
* Be target, 1st and 2nd half
ASSIGNMAT WATER regWa3
ASSIGNMAT WATER regWa4
* External Black Hole
ASSIGNMAT BLCKHOLE regBH1
* Vacuum
ASSIGNMAT VACUUM regVA2
*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
* Tracklength fluence inside the target, Upstream part and Downstream =
part
USRBIN 10.0 ENERGY 50.0 4.1 4.1 30. Edeposit
USRBIN -4.1 -4.1 0.0 41.0 41.0 300.0 &
*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
RANDOMIZE 1.0
*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
START 5000000.0
STOP

Thank you.
Dulitha.
Received on Mon Mar 22 2010 - 16:34:43 CET