The double focussing monochromator of IN4C

被引：8

作者：

Cicognani, G

Mutka, H

Weddle, D

Hamelin, B

Malbert, P

Sacchetti, F

Petrillo, C

Babucci, E

机构：

[1] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France

[2] Ist Nazl Fis Mat, OGG Sect, Grenoble, France

[3] Univ Perugia, Dipartimento Fis, I-06100 Perugia, Italy

来源：

PHYSICA B | 2000年 / 276卷

关键词：

monochromators; neutron instruments; time-of-flight;

D O I：

10.1016/S0921-4526(99)01369-1

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

One of the objectives of the new version of the time-of-flight spectrometer IN4 is to increase the flux at the sample position and to maintain optimised resolution performance. It has been of major importance to design and fabricate a large area (440 cm(2)) monochromator, having both vertical and horizontal focussing. The monochromator assembly consists of four faces at 90 degrees, with 55 individual crystals of 2 x 4 cm(2) on each face. By optimising the vertical and horizontal focalisation, a time-pulsed flux of 1.4 x 10(5) n/cm(2)/s was found at the sample position at a wavelength of 1.1 Angstrom, i.e. an increase up to a factor of 5 with respect to the hat configuration. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：85 / 86

页数：2