[Gate-users] Energy spectrum

[tony youness]

Dear fellow Gate users,

I am trying to generate the electrons energy spectrum at 10 cm in water 
phantom. I used the Energy spectrum actor as follow:

/gate/actor/addActor          EnergySpectrumActor    spectrum
/gate/actor/spectrum/attachTo                        layer3
/gate/actor/spectrum/addFilter particleFilter
/gate/actor/spectrum/particleFilter/addParticle      e-
/gate/actor/spectrum/save output/WaterSpec.root
/gate/actor/spectrum/energySpectrum/setEmin          0 eV
/gate/actor/spectrum/energySpectrum/setEmax          6 MeV
/gate/actor/spectrum/energySpectrum/setNumberOfBins  300

layer3 is a small water volume created in the water phantom at 10 cm. 
When i launch the simulation i get the following error:

Error in <TH1D::Rebin>: Illegal value of ngroup=10815379
Error in <TH1D::Rebin>: Illegal value of ngroup=10815379
Error in <TH2D::Rebin>: Illegal value of nxgroup=10815379
Error in <TH1D::Rebin>: Illegal value of ngroup=10815379
Error in <TH1D::Rebin>: Illegal value of ngroup=10815379
WARNING: Scene "none" not found.
   /vis/scene/list to see scenes.



### === G4UAtomicDeexcitation::InitialiseForNewRun()
### ===  PIXE model for hadrons: Empirical
### ===  PIXE model for e+-:     Livermore
Error in <TH2D::Fill>: Invalid signature - do nothing
Error in <TH2D::Fill>: Invalid signature - do nothing
Error in <TH2D::Fill>: Invalid signature - do nothing
Error in <TH2D::Fill>: Invalid signature - do nothing
Error in <TH2D::Fill>: Invalid signature - do nothing
Error in <TH2D::Fill>: Invalid signature - do nothing
Error in <TH2D::Fill>: Invalid signature - do nothing
...

Any ideas where this problem could come from?

Regards,

Tony Younes