1-D array of micro-structured neutron detectors

W. J. McNeil, S. L. Bellinger, T. C. Unruh, C. M. Henderson, P. B. Ugorowski, W. L. Dunn, R. D. Taylor, B. J. Blalock, C. L. Britton, D. S. McGregor

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

Abstract

A 1024-channel pixel array has been constructed utilizing the perforated diode neutron detector design currently produced at Kansas State University. In this design a single pixel consists of a pn-junction diode fabricated around a single trench 4 cm long, 30 microns wide and 100 microns deep. The trench is filled with 6LiF powder to provide conversion of neutrons to energetic charged particles which can be captured in the diode depletion region. A pitch of 100 microns between pixels has been achieved and less than 120 micron spatial resolution has been demonstrated experimentally with a 32-channel prototype in previous work. Also, the first array demonstrated 12% thermal neutron counting efficiency. The 1024-channel array was produced by tiling 16 chips side-by-side, each containing 64 pixels. Signal processing is handled by 16 PATARA chips for amplification and thresholds, developed at University of Tennessee. The entire board assembly and digital communications to PC were handled by the KSU Electronics Design Laboratory utilizing a PCI card developed at ORNL.

Original languageEnglish
Title of host publication2009 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2009
Pages2008-2011
Number of pages4
DOIs
StatePublished - 2009
Event2009 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2009 - Orlando, FL, United States
Duration: Oct 25 2009Oct 31 2009

Publication series

NameIEEE Nuclear Science Symposium Conference Record
ISSN (Print)1095-7863

Conference

Conference2009 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2009
Country/TerritoryUnited States
CityOrlando, FL
Period10/25/0910/31/09

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