1. 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 Montréal
2 Space Science Center, University of New Hampshire, Durham
3 Departement of Physics, College of the Holy Cross

2. 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

5. interaction sites from GEANT4
Energy deposited at each site is supposed a small 3-D Gaussian e-h distribution

9. Field maps from Comsol multiphysics.
Results shown for the 225 µm model, with a grid.

10. Weighting potentials

11. To download the animation :

12. 225µm model

13. 225µm model

14. 225µm model
Experimental
Result (Co 57)
Simulated result
122 keV, Co57

15. 225µm model
Ba-133
Cs-137

16. 150 microns pitch

17. 150µm model
Co-57

18. 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