Published February 2016 | Version v1
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Recent status of a cold neutron disk chopper spectrometer, AMATERAS

Creators

  • 1. Japan Atomic Energy Agency, J-PARC Center, Tokai, Ibaraki (Japan)

Description

Recent issues of a cold-neutron disk-chopper spectrometer AMATERAS are reported. Five years have been passed since we had the first neutron beam on AMATERAS. The user program is running steadily since after the visiting of the first user in 2009. In parallel to that, machine studies and commissioning works to improve spectrometer performance have been continuously done. Effort has been done on fixing the beam-transport problem, which causes the serious intensity loss at the sample position. After replacing 8.6 m section of super mirror and re-doing the mirror alignment, a part of intensity has been recovered, while still some of problems are remained. We also spent effort on reducing background caused by several sources. Study on the background sources and implementation of countermeasures are progress. (author)

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Part of:
Proceedings of the 21st meeting of the international collaboration on advanced neutron sources (ICANS-21). 'Dawn of high power neutron sources and science applications'

Additional details

Identifiers

DOI
10.11484/jaea-conf-2015-002;

Publishing Information

Imprint Title
Proceedings of the 21st meeting of the international collaboration on advanced neutron sources (ICANS-21). 'Dawn of high power neutron sources and science applications'
Imprint Pagination
686 p.
Journal Page Range
p. 306-311
Report number
JAEA-Conf--2015-002

Conference

Title
21. meeting of the international collaboration on advanced neutron sources
Acronym
ICANS-21
Dates
29 Sep - 3 Oct 2014
Place
Mito, Ibaraki (Japan)

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
48014679
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S43: PARTICLE ACCELERATORS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BEAM TRANSPORT; BORON CARBIDES; COLD NEUTRONS; COMPUTERIZED SIMULATION; ENERGY DEPENDENCE; INELASTIC SCATTERING; J-PARC MLF; MAGNETIC DISKS; MONTE CARLO METHOD; NEUTRON CHOPPERS; NEUTRON DETECTORS; NEUTRON GUIDES; NEUTRON SPECTROMETERS; PULSED NEUTRON TECHNIQUES; QUASI-ELASTIC SCATTERING; Q-VALUE
Descriptors DEC
BARYONS; BEAM PULSERS; BORON COMPOUNDS; CALCULATION METHODS; CARBIDES; CARBON COMPOUNDS; DIRECT REACTIONS; ELEMENTARY PARTICLES; ENERGY; FERMIONS; HADRONS; MAGNETIC STORAGE DEVICES; MEASURING INSTRUMENTS; MEMORY DEVICES; NEUTRONS; NUCLEAR REACTIONS; NUCLEONS; QUASI-FREE REACTIONS; RADIATION DETECTORS; SCATTERING; SIMULATION; SPECTROMETERS

Optional Information

Notes
8 refs., 12 figs.
Secondary number(s)
KEK-Proceedings--2015-7