Add NEXT100 generator for events on cathode surface #266
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gonzaponte
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Jun 16, 2025
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gonzaponte
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As I've annotated, the generator is actually 2 um thick, not 1. I don't think this matters, so I approve it anyway. Feel free to change it, if you prefer it to be 1 um.
| // Generate in a 1 micron thick disk in front of cathode | ||
| cathode_surf_gen_ = | ||
| new CylinderPointSampler(0.0, cathode_int_diam_/2., | ||
| 1.0*micrometer,0., twopi, nullptr, |
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Not that it matters, but to get 1 um, you should specify 0.5*micrometer here.
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ah yes, the half-width!
2 micron is fine shouldn't make much of a difference. I'll update the thickness so it matches with the desired shift.
| 1.0*micrometer,0., twopi, nullptr, | ||
| G4ThreeVector(GetCoordOrigin().x(), | ||
| GetCoordOrigin().y(), | ||
| cathode_grid_zpos - grid_thickn_ - 1*micrometer)); |
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and here.
2 um is fine, though :)
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This PR adds a generator to make events in a 1 micron thickness, 1 micron in front of the cathode mesh. This is for modelling the plated-out Rn events.
According to the geometry, the cathode mesh sits at
z = 1187.37 mm. 100k test events were generated with the following coordinates:The z positions are just in front of the cathode mesh surface.