A Monte Carlo Simulation of Neutron Instrument Resolution Functions

被引：10

作者：

Vickery, Anette ^{[1
,2
]}

Udby, Linda ^{[1
]}

Violini, Nicolo ^{[3
,4
]}

Voigt, Joerg ^{[4
]}

Deen, Pascale P. ^{[5
]}

Lefmann, Kim ^{[1
,2
]}

机构：

[1] Niels Bohr Inst, Nanosci Ctr, DK-2100 Copenhagen, Denmark

[2] ESS Design Update Programme, Roskilde, Denmark

[3] Forschungszentrum Julich, ESS Design Update Project, D-52425 Julich, Germany

[4] Forschungszentrum Julich, JCNS, Julich Ctr Neutron Sci, D-52425 Julich, Germany

[5] European Spallat Source ESS AB, S-22100 Lund, Sweden

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2013年 / 82卷

关键词：

resolution function; triple axis spectrometer; direct geometry chopper spectrometer; Monte Carlo simulation; Cooper-Nathans; Popovici; TRIPLE-AXIS SPECTROMETER; OF-FLIGHT SPECTROMETER; DIFFRACTOMETRY;

D O I：

10.7566/JPSJS.82SA.SA037

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this paper we demonstrate that the Monte Carlo simulation package McStas is a useful tool, not only for instrument design, but also for resolution function calculation. It has been possible to determine analytically the 4 dimensional resolution function of both a direct geometry time of flight neutron spectrometer and a triple axis spectrometer. The obtained resolution functions are directly comparable to and in agreement with the Monte Carlo simulated results. These results are a step towards incorporating a 4 dimensional resolution function into data analysis. For each instrument we show an example of the resolution function calculated at a particluar point in (Q, omega) space.

引用

页数：9

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