L.A. Hamel1, M. Benoit1, B. Dönmez2, J.R. Macri2, M.L. McConnell2,
T. Narita3, J.M. Ryan2, M. Whidholm2
1 Département de Physique, Université de Montréal2 Space Science Center, University of New Hampshire, Durham 3 Departement of Physics, College of the Holy Cross
• 2N instead of N2 channels
• Rely on good charge sharing between X and Y
• Previous model (225 m pitch) has shown poor sharing
• Improved simulation for device optimization
interaction sites from GEANT4
Energy deposited at each site is supposed a small 3-D Gaussian e-h distribution
tNe
DzyxR
zyx )5
1)
4
3(
15
1(2
,,0
.,2
• Field maps from Comsol multiphysics.
• Results shown for the 225 µm model, with a grid.
Weighting potentials
To download the animation :
www.lps.umontreal.ca/~mbenoit/R12-6.zip
• 225µm model
• 225µm model
• 225µm model
ExperimentalResult (Co 57)
Simulated result122 keV, Co57
• 225µm model
Cs-137
Ba-133
150 microns pitch
• 150µm model
Co-57
• Combination of repulsion, diffusion, trapping, and accurate field and weighting potentials yields to better predictions
• Reproduces results for 225 µm pitch
• Predicts good sharing for 150 µm pitch
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