Design philosophy for high-resolution rate and throughput spectroscopy systems

Journal Article · Tue Feb 01 04:00:00 EST 1983 · IEEE Trans. Nucl. Sci.; (United States)

DOI:https://doi.org/10.1109/TNS.1983.4332275· OSTI ID:5990604

Goulding, F S; Landis, D A; Madden, N W

The paper describes the philosophy behind the design of a pulse processing system used in a semiconductor detector x-ray spectrometer to be used for plasma diagnostics at the Princeton TFTR facility. This application presents the unusual problems of very high counting rates and a high-energy neutron background while still requiring excellent resolution. To meet these requirements, three specific new advances are included in the design: (i) A symmetrical triangular pulse shape is employed in the main pulse-processing channel. A new simple method of generating a close approximation to the symmetrical triangle has been developed. (ii) To cope with the very wide dynamic range of signals while maintaining a constant fast resolving time, approximately symmetrical triangular pulse shaping is also used in the fast pulse pile-up inspection channel. (iii) The demand for high throughput has resulted in a re-examination of the operation of pile-up rejectors and pulse stretchers. As a result a technique has been developed that, for a given total pulse shaping time, permits approximately a 40% increase in throughput in the system. Performance results obtained using the new techniques are presented.

• Research Organization: Lawrence Berkeley Laboratory, University of California, Berkeley, CA 94720
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5990604
• Journal Information: IEEE Trans. Nucl. Sci.; (United States), Journal Name: IEEE Trans. Nucl. Sci.; (United States) Vol. 30:1; ISSN IETNA
• Country of Publication: United States
• Language: English

Related Subjects

440103* -- Radiation Instrumentation-- Nuclear Spectroscopic Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CONFIGURATION
COUNTING RATES
DESIGN
ELECTRONIC CIRCUITS
MEASURING INSTRUMENTS
PERFORMANCE
PLASMA DIAGNOSTICS
PULSE CIRCUITS
PULSE PILEUP
PULSE SHAPERS
PULSE TECHNIQUES
RESOLUTION
SIGNALS
SPECTROMETERS
SPECTROSCOPY
SYSTEMS ANALYSIS
TFTR REACTORS
THERMONUCLEAR REACTORS
TIME RESOLUTION
TIMING PROPERTIES
TOKAMAK TYPE REACTORS
TRIANGULAR CONFIGURATION
X-RAY SPECTROMETERS