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Proceedings Paper

Cross strip anode readouts for large format, photon counting microchannel plate detectors: developing flight qualified prototypes of the detector and electronics
Author(s): John Vallerga; Rick Raffanti; Michael Cooney; Harley Cumming; Gary Varner; Andrej Seljak
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Paper Abstract

Photon counting microchannel plate (MCP) imagers have been the detector of choice for most UV astronomical missions over the last two decades (e.g. EUVE, FUSE, COS on Hubble etc.). Over this duration, improvements in the MCP laboratory readout technology have resulted in better spatial resolution (x10), temporal resolution (x1000) and output event rate (x100), all the while operating at lower gain (x 10) resulting in lower high voltage requirements and longer MCP lifetimes. One such technology is the parallel cross strip (PXS) readout. Laboratory versions of PXS electronics have demonstrated < 20 μm FWHM spatial resolution, count rates on the order of 2 MHz, and temporal resolution of ~ 1ns. In 2012 our group at U.C. Berkeley, along with our partners at the U. Hawaii, received a Strategic Astrophysics Technology grant to raise the TRL of the PXS detector and electronics from 4 to 6 by replacing most of the high powered electronics with application specific integrated circuits (ASICs) which will lower the power, mass and volume requirements of the PXS detector. We were also tasked to design and fabricate a "standard" 50mm square active area MCP detector incorporating these electronics that can be environmentally qualified for flight (temperature, vacuum, vibration). The first ASICs designed for this program have been fabricated and are undergoing testing. We present the latest progress on these ASIC designs and performance and show imaging results from the new 50 x 50 mm XS detector.

Paper Details

Date Published: 25 July 2014
PDF: 12 pages
Proc. SPIE 9144, Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray, 91443J (25 July 2014); doi: 10.1117/12.2058412
Show Author Affiliations
John Vallerga, Space Sciences Lab., Univ. of California, Berkeley (United States)
Rick Raffanti, Space Sciences Lab., Univ. of California, Berkeley (United States)
Michael Cooney, Univ. of Hawaii at Manoa (United States)
Harley Cumming, Univ. of Hawaii at Manoa (United States)
Gary Varner, Univ. of Hawaii at Manoa (United States)
Andrej Seljak, Univ. of Hawaii at Manoa (United States)

Published in SPIE Proceedings Vol. 9144:
Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray
Tadayuki Takahashi; Jan-Willem A. den Herder; Mark Bautz, Editor(s)

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