Fig. 15.
Left: spectral response of the UVDA flight model at 0°C and −20°C. The voltages applied to the microchannel plate (MCP) and to the screen were 400 V and 6 kV, respectively. Screen voltages of 5 kV and 4 kV would reduce the response by a factor of 0.68 and 0.36, respectively. Right: UVDA flight model conversion efficiency at 121.6 nm as a function of the voltage applied to the MCP. The screen voltage was set to 6 kV.
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