Richard Pausch

It is definitely faster than the radiation plugin (but it might also run into out-of-memory problems due to the high number of photons). I would it consider valid for betatron...

Hi @StevE-Ong, we observed these harmonics during some first betatron radiation tests too. I doubt that they are physics-wise correct and assume that the originate from floating point accuracy or...

Yes, I meant switch from 32bit to 64bit in `precision.param`. Yes, by default everything except some numerically critical parts are 32bit.

Thanks @sbastrakov for tagging. The light scattered from the laser only scatters from particles in the laser field. These particles (in LWFA) do not reach energies much above the normalized...

@StevE-Ong Most likely yes. You can access the shape function for the grid you used by comparing the coherent enhancement you see with the form-factors equation defined [here](https://github.com/ComputationalRadiationPhysics/picongpu/blob/59e9b53605f9a5c1bf271eeb055bc74370a99052/include/picongpu/plugins/radiation/radFormFactor.hpp).

@StevE-Ong We fixed a bug in the radiation plugin that caused additional spectral modulations at high frequencies #4231. Perhaps you want to rerun your simulation and check whether the high...

@sbastrakov Does this mean, that if I want to reproduce the png-plugin's approach, I would need to look at the particle/electron positions on the sliced/center cell directly using a NGP...

@psychocoderHPC No, the not-so-dense regions are coming from the sliding window and are unrelated to the GPU distribution. There seems to be no particle data in the openPMD-api output. @finnolec...

@finnolec would it be possible to rerun one of the affected simulations but with particle output enabled?

Thank you @finnolec.