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On the energy resolution obtained with a multistep proportional counterResults of laboratory experiments with a standard multiwire imaging proportional counter (MWPC), modified to include a parallel grid preamplification stage are presented. Both argon and xenon were used as the primary absorbing gas in conjunction with a number of quench gases. It is found that extremely good energy resolution is obtained from the preamplification stage, almost independent of the ionization potential of the quench gas and over a broad range of gains. Furthermore, regardless of absorbing gas or quench agent, there was no difficulty in transferring a portion of this preamplified charge to the MWPC section for multistep mode operation. Finally, even for overall system gains greater than 10,000, the energy resolution from the second stage is found to be significantly improved, as long as the preamplification stage is operating. These results should have wide application and are of special interest for X-ray astronomy.
Document ID
19870038917
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Ramsey, B. D.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Weisskopf, M. C.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1986
Publication Information
Publication: Nuclear Instruments and Methods in Physics Research, Section A - Accelerators, Spectrometers, Detectors, and Associated Equipment
Volume: A248
ISSN: 0168-9002
Subject Category
Instrumentation And Photography
Accession Number
87A26191
Distribution Limits
Public
Copyright
Other

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