We should be able to understand trends in the
respective radiation temperatures by examining
the distribution of surface element temperatures seen from the relevant perspectives.
This should also provide insight into the differences in the spectral
energy distributions seen
from different positions (see next two slides).
Below are the results of a simulation done with the
beams pointed 600 mm into the halfraum with the focus at the plane of the LEH, an albedo of
0.7 and an XCE of 0.55. Note that the witness plate (left) sees more hot spots than DANTE
(right), but it also sees the cold LEH.
We would like to quantify this by
post-processing these simulations in order to make a histogram of solid angle vs. temperature (future work).