Recent improvements to a transportable neutron spectrometer (TNS).

Weaver, J. A. and Joyce, M. J. and Peyton, A. J. and Roskell, J. (2002) Recent improvements to a transportable neutron spectrometer (TNS). Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 476 (1-2). pp. 143-148.

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Abstract

This paper reviews the design, operation and future development of a transportable neutron spectrometer (TNS). Analogue signal processing techniques are used to condition the signals from an array of radiation sensors, comprising five gas-filled sensors and a hydrogenous oil-filled scintillator. This high reliance on analogue signal processing techniques is because of the nano-second rise time of the pulses produced from the sensor array. The analogue circuitry requires a high degree of expertise from the operator and frequent instrument calibration. An overview of the present instrument will be given together with a description of how the raw data from the individual sensor channels are combined to give a continuous neutron energy spectrum. Digital processing techniques are now being applied to the TNS to handle some of the more complex analogue functions, particularly neutron/γ-ray pulse-shape discrimination for the photo-scintillator column. Potential advantages of this approach are on qualities such as usability, reliability, testability, repeatability and portability of the instrument. The paper will report on the progress to date and give the latest results from experiments using a mixed neutron/γ-ray radiation source.

Item Type:
Journal Article
Journal or Publication Title:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3105
Subjects:
?? digitalpulsediscriminationneutronspectrometerinstrumentationnuclear and high energy physicsta engineering (general). civil engineering (general) ??
ID Code:
21191
Deposited By:
Users 810 not found.
Deposited On:
19 Dec 2008 10:14
Refereed?:
No
Published?:
Published
Last Modified:
15 Jul 2024 09:53