1 November 1990 SPAN high-speed photon-counting detector for the XMM optical monitor
Author Affiliations +
Abstract
The compact photon-counting detector SPAN is described which offers 25-micron spatial resolution and a 25-mm imaging diam. The SPAN detector incorporates position readout within a vacuum-sealed optical-intensifier tube, and a photocathode is used to sense the images with high-blue and near-UV sensitivity. A microchannel-plate intensifier generates an electron cloud that is measured with a position-sensitive readout developed for this application. The position-sensitive readout is a conductive device that, in the context of the SPAN, permits a high count rate and spatial resolution greater than the charge-measurement precision of each electrode. Preliminary photon counting is demonstrated, and the results suggest that the SPAN has a resolution of better than 1/1000 and effective linearity with 8-bit digitization.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jonathan S. Lapington, Jonathan S. Lapington, Michael L. Edgar, Michael L. Edgar, Mark S. Cropper, Mark S. Cropper, Keith O. Mason, Keith O. Mason, "SPAN high-speed photon-counting detector for the XMM optical monitor", Proc. SPIE 1344, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy, (1 November 1990); doi: 10.1117/12.23270; https://doi.org/10.1117/12.23270
PROCEEDINGS
8 PAGES


SHARE
RELATED CONTENT

Highly curved microchannel plates
Proceedings of SPIE (October 31 1990)
High-dynamic-range MCP structures
Proceedings of SPIE (September 30 1991)
SPAN: a novel high-speed high-resolution position readout
Proceedings of SPIE (October 31 1990)
Imaging At Soft X-Ray Wavelengths With Microchannel Plates
Proceedings of SPIE (November 26 1989)
Recent developments using GaAs as an x-ray detector
Proceedings of SPIE (September 30 1991)
Effects of charge cloud size and digitization on the SPAN...
Proceedings of SPIE (October 07 1992)
Performance characteristics of SPAN position readout systems
Proceedings of SPIE (October 07 1992)

Back to Top