Diagnostic wanted: histogram resolving solid angle

[n01r]

Inquiry from @aodhanmci

Notes from our meeting:

ParticleHistogram2D

• energy-opening angle to solid angle

• x-y particle density of all particles going? Slice in 5-10 MeV steps?

• [ ] See if it works with available methods

  • [ ] Implement into our examples if it does

• [ ] Add 3D version down the line

• Need to handle particles that left the box (toggle: keep / throw away)

[n01r]

CC'ing @ax3l