[Gate-users] Energy spectrum

[tony youness]

Dear Maxime,

Thank you for your response.

I just tried to increase the Emin to 1 MeV and reduced the number of 
bins to 100 (just for testing), and I still get the same error...

Tony


On 26/09/17 1:51 pm, Maxime Chauvin wrote:
> Dear Tony,
>
> what I can tell is that the error seems to come from Root (TH1D).
> I don’t know what cause the error but maybe the number of bins is too high or the Emin is too small…
>
>    Maxime
>
>> On 26 Sep 2017, at 13:17, tony youness <tony_youness at live.com> wrote:
>>
>> 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
>>
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