A comparison of Monte-Carlo simulation programs with experiment: the effect of a focusing guide on resolution

被引：0

作者：

A.R. Wildes

J. Saroun

E. Farhi

I. Anderson

P. Hoghoj

A. Brochier

机构：

[1] Institut Laue–Langevin,

[2] BP 156,undefined

[3] 38042 Grenoble Cédex 9,undefined

[4] France,undefined

[5] Nuclear Physics Institute,undefined

[6] 25068 Rez near Prague,undefined

[7] Czech Republic,undefined

来源：

Applied Physics A | 2002年 / 74卷

关键词：

PACS: 02.70.Tt; 03.75.Be;

D O I：

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中图分类号：

学科分类号：

摘要：

Two Monte-Carlo neutron instrument simulation programs, RESTRAX and McSTAS, were used to determine the effect of using a converging supermirror guide between a monochromator and sample on the divergence of the incident beam. The results are compared with the test results on implementing such a focusing guide on the IN14 cold neutron spectrometer, Institut Laue–Langevin. The measured non-trivial incident beam divergence in both real and reciprocal space is reproduced by both the programs, giving confidence in the accuracy of the calculations and highlighting the dangers of using such devices on high-resolution instruments.

引用

页码：s1452 / s1454