Design philosophy for high-resolution rate and throughput spectroscopy systems
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 symmetical 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 Lab., CA (USA)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 6628436
- Report Number(s):
- LBL-14464; CONF-821011-29; ON: DE83004117
- Resource Relation:
- Conference: IEEE nuclear science symposium, Washington, DC, USA, 20 Oct 1982; Other Information: Portions of document are illegible
- Country of Publication:
- United States
- Language:
- English
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High resolution, high rate x-ray spectrometer
High resolution, high rate X-ray spectrometer
Related Subjects
TFTR REACTORS
X-RAY SPECTROMETERS
DESIGN
GE SEMICONDUCTOR DETECTORS
PERFORMANCE
SI SEMICONDUCTOR DETECTORS
SPATIAL DISTRIBUTION
X-RAY SPECTRA
DISTRIBUTION
MEASURING INSTRUMENTS
RADIATION DETECTORS
SEMICONDUCTOR DETECTORS
SPECTRA
SPECTROMETERS
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS
700102* - Fusion Energy- Plasma Research- Diagnostics