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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: Article
Journal or Publication Title: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Uncontrolled Keywords: Digital ; Pulse ; Discrimination ; Neutron ; Spectrometer
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Departments: Faculty of Science and Technology > Engineering
ID Code: 21191
Deposited By: Mrs Yaling Zhang
Deposited On: 19 Dec 2008 10:14
Refereed?: No
Published?: Published
Last Modified: 24 Jan 2014 05:16
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/21191

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