CAMEA-A novel multiplexing analyzer for neutron spectroscopy

被引：27

作者：

Groitl, Felix ^{[1
,2
]}

Graf, Dieter ^{[3
]}

Birk, Jonas Okkels ^{[2
]}

Marko, Marton ^{[2
,4
]}

Bartkowiak, Marek ^{[3
]}

Filges, Uwe ^{[3
]}

Niedermayer, Christof ^{[2
]}

Rueegg, Christian ^{[2
,5
]}

Ronnow, Henrik M. ^{[1
,6
]}

机构：

[1] Ecole Polytech Fed Lausanne, Lab Quantum Magnetism, CH-1015 Lausanne, Switzerland

[2] Paul Scherrer Inst, Lab Neutron Scattering & Imaging, CH-5232 Villigen, Switzerland

[3] Paul Scherrer Inst, Lab Sci Dev & Novel Mat, CH-5232 Villigen, Switzerland

[4] Wigner Res Ctr Phys, Neutron Spect Dept, H-1525 Budapest, Hungary

[5] Univ Geneva, Dept Quantum Matter Phys, CH-1211 Geneva, Switzerland

[6] Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen, Denmark

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2016年 / 87卷 / 03期

基金：

瑞士国家科学基金会;

关键词：

PYROLYTIC-GRAPHITE; SPECTROMETER; SYSTEM; RITA; PERFORMANCE;

D O I：

10.1063/1.4943208

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The analyzer detector system continuous angle multiple energy analysis will be installed on the cold-neutron triple-axis spectrometer RITA-2 at SINQ, PSI. CAMEA is optimized for efficiency in the horizontal scattering plane enabling rapid and detailed mapping of excitations. As a novelty the design employs a series of several sequential upward scattering analyzer arcs. Each arc is set to a different, fixed, final energy and scatters neutrons towards position sensitive detectors. Thus, neutrons with different final energies are recorded simultaneously over a large angular range. In a single data-acquisition many entire constant-energy lines in the horizontal scattering plane are recorded for a quasi-continuous angular coverage of about 60 degrees. With a large combined coverage in energy and momentum, this will result in a very efficient spectrometer, which will be particularly suited for parametric studies under extreme conditions with restrictive sample environments (high field magnets or pressure cells) and for small samples of novel materials. In this paper we outline the concept and the specifications of the instrument currently under construction. (C) 2016 AIP Publishing LLC.

引用

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