Hadron Therapy error

Hello! I am working in Hadron therapy, using Geant4 examples. When I run defaultMacro. mac with 70 Mev energy, I get accurate graph but when I increase energy, I get irregular graph. Can Anyone guide me about this.
250 Mev

defaultMacro.mac

G.A.P.Cirrone, pablo.cirrone@lns.infn.it

Default macro file with visualisation. It is called if no argument is provided at run

#########################

Set of the verboses

/control/verbose 0
/tracking/verbose 0
/run/verbose 0
/event/verbose 0

##########################

Set of the physic models

/Physics/addPhysics HADRONTHERAPY_1
/run/numberOfThreads 10

##########################

Initialisation procedure

/run/initialize

####################################################

Set here the CUT and the STEP MAX for the tracking.

Suggested values of cut and step

Set cuts OUTSIDE the detector

/run/setCut 1 m

Set cuts ONLY inside the detector

/run/setCutForRegion DetectorLog 0.1 mm

/run/setCutForAGivenParticle e- 0.1 mm
/run/setCutForAGivenParticle e+ 0.1 mm
/run/setCutForAGivenParticle proton 0.1 mm
#/Step/waterPhantomStepMax 0.1 mm

#########################

Set the primary particle type,

energy and position along the X direction

#---------------------------gps-----------------
/gps/pos/shape Circle
/gps/pos/centre -310. 0. 0. cm
/gps/pos/radius 0. mm
/gps/pos/sigma_r 2. mm
/gps/particle proton
#/gps/particle ion
#/gps/ion 6 12 6
/gps/pos/type Beam

the incident surface is in the y-z plane

/gps/pos/rot1 0 1 0
/gps/pos/rot2 0 0 1

the beam is travelling along the x-axis without any angular dispersion (angular despersion set to 0.0)

/gps/ang/rot1 0 0 1
/gps/ang/rot2 0 1 0
/gps/ang/type beam1d
/gps/ang/sigma_r 0.028 deg

the beam energy is in gaussian profile

/gps/ene/type Gauss
/gps/ene/mono 250 MeV
/gps/ene/sigma 0.25 MeV
#/gps/ene/mono 744 MeV
#/gps/ene/sigma 0.740 MeV

###################################################

DETECTOR DESCRIPTION

########################################################

USE THE FOLLOWING FOUR LINES FOR DEFINITION OF PHANTOM

########################################################

#/changePhantom/position 20. 0. 0. cm
#/changePhantom/update

/changePhantom/size 40 40 40 cm
/changePhantom/position 20 0 0 cm

###################################################

USE THE FOLLOWING FOR A VOXELLIZED DETECTOR

###################################################

/changeDetector/size 4 4 4 cm
/changeDetector/voxelSize .1 40 40 mm

Put the detector in the lower left corner of the phantom

/changeDetector/displacement 0 18 18 cm
/changePhantom/update

#########################

Start of the run

If secondary particles dose & fluence are needed

/analysis/secondary true
/analysis/computeLet

RBE

/rbe/verbose 2
/rbe/loadLemTable data/rbe/lem1.csv
/rbe/calculation 1
/rbe/accumulate 1

U87

#/rbe/dcut 8.0 gray
#/rbe/alphaX 0.11 gray(-1)
#/rbe/betaX 0.06 gray(-2)
#/rbe/lemTable data/rbe/U87_LEM.dat
/rbe/cellLine U87

AG01522

#/rbe/dcut 9.5 gray
#/rbe/alphaX 0.54 gray(-1)
#/rbe/betaX 0.062 gray(-2)
#/rbe/lemTable data/rbe/AG01522_LEM.dat

/rbe/doseScale 7777770

Dose scale should be: 2e7 / nEvents * voxelSizeInCm2

Default material is water liquid

/changePhantom/material G4_WATER

/run/printProgress 1000
/run/beamOn 50000

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