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Figure 4
Ray-tracing results at the exit port obtained using the simulation code ZEMAX. Characteristics of FIR emission are an emission angle of ±85 mrad at each electron position, and a photon energy of 0.01 eV (∼100 µm). The left-hand image is observed with the PhSR circular mirror having an exit opening of size 40 × 30 mm; the right-hand image is without the circular mirror. The calculated photon density with the circular mirror (PhSR) (left) is about eight times larger than that without the PhSR (right).

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 16| Part 2| March 2009| Pages 299-306
https://doi.org/10.1107/S0909049509000144
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