First measurements with the new 3He-filled Monoblock Aluminium Multitube neutron detector developed at the ILL for ANSTO PLATYPUS reflectometer

Author:

Abuel Luis1,Bartsch Friedl1,Berry Andrew1,Buffet Jean-Claude2,Cuccaro Sylvain2,van-Esch Patrick2,Guerard Bruno2,Holt Stephen A.1,Marchal Julien2,Mutti Paolo2,Ollivier Kevin2,Pentenero Jerome2,Platz Martin2,Robert Adeline2,Roulier Damien2,Spedding James1

Affiliation:

1. Australian Centre for Neutron Scattering, Australian Nuclear Science and Technology Organisation, New Illawarra Road, Lucas Heights NSW 2234, Australia

2. Institut Laue-Langevin, 71 avenue des Martyrs CS 20156, 38042 GRENOBLE Cedex 9, France

Abstract

A detector upgrade was carried out on the PLATYPUS instrument dedicated to neutron reflectometry at the Australian Nuclear Science and Technology Organisation (ANSTO). The new detector, developed in the framework of a research collaboration between the ILL and ANSTO, is based on the Monoblock Aluminium Multi-tube (MAM) detector design already in use on several reflectometers and SANS instruments at the ILL. This article provides a technical description of the mechanical design and read-out electronics of the PLATYPUS detector and its commissioning on the PLATYPUS instrument. The main detector performance parameters have been measured and are presented here as well as the characterisation methods and the results of several reflectometry measurements. These measurements show an improvement in experimental data quality resulting from high positional resolution, high detection efficiency and reduced neutron scattering background in the 2.5–19 Å neutron wavelength range used in PLATYPUS instrument.

Publisher

IOS Press

Subject

Nuclear Energy and Engineering,Nuclear and High Energy Physics

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