Thermal Chopper Spectrometer for the European Spallation Source

被引：6
|
作者：
Kleno, Kaspar Hewitt [1 ,2 ]
Lefmann, Kim [1 ,2 ]
机构：
[1] Univ Copenhagen, Niels Bohr Inst, Nanosci & E Sci Ctr, DK-1168 Copenhagen, Denmark
[2] ESS, Lund, Sweden
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2011年 / 80卷
关键词：
Neutron scattering; instrumentation; ray-tracing; Monte Carlo simulation;
D O I：
10.1143/JPSJS.80SB.SB004
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
One of the instruments being considered for the ESS is a thermal chopper spectrometer, intended for the study of lattice vibrations and magnetic excitations. However, as the ESS will be a long pulsed source, we propose a very long instrument (180 m - 300 m). We here present a guide system that can achieve a flux of 3.47x10(8) n/s/cm(2) and a resolution of dE/E = 5.3% for 1 angstrom neutrons on the sample with a transport efficiency of 80%. Furthermore, we demonstrate the efficiency of the instrument using a virtual experiment measuring an elastic line width.
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页数：4
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