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.