1. UV MCP Detectors for WSO-UV: Cross Strip Anode and Readout Electronics.
- Author
-
Diebold, Sebastian, Barnstedt, Jurgen, Hermanutz, Stephan, Kalkuhl, Christoph, Kappelmann, Norbert, Pfeifer, Marc, Schanz, Thomas, and Werner, Klaus
- Subjects
SPECTROGRAPHS ,QUANTUM chemistry ,QUANTUM efficiency ,SINGLE photon generation ,GALLIUM nitride ,ANODES - Abstract
The main instrument of the WSO-UV satellite covers the wavelength range of 102–176 nm and 174–310 nm with two high resolution echelle spectrographs. The essential requirements for the associated detectors are high quantum efficiency, solar blindness, and single photon detection. To achieve this, we are developing microchannel plate (MCP) detectors in sealed tubes. It is planned to use cesium activated gallium nitride as semitransparent photocathode, a stack of two microchannel plates in chevron configuration, and a 33 mm \times 44 mm cross strip anode with 64 horizontal and 64 vertical electrodes. This type of anode requires a lower gain of the MCPs (\approx 10^6) compared to other types of anodes. Therefore, it extends the expected lifetime of the detectors to about five to ten years. [ABSTRACT FROM PUBLISHER]
- Published
- 2013
- Full Text
- View/download PDF