Figure 2
Measured photon flux from U20 and U36 at several gaps. The intensity was normalized by 60 mA of the ring current and 0.318 mrad (H) × 0.053 mrad (V) beam divergence. In U36 the photon flux at the gap of 18 mm was measured without one of the two graphite heat absorbers to increase the flux around 5 keV. |