Reusable shielding material for neutron- and gamma-radiation

被引：41

作者：

Calzada, Elbio ^{[1
,2
]}

Gruenauer, Florian ^{[3
]}

Schillinger, Burkhard ^{[1
,2
]}

Tuerck, Harald ^{[1
,2
]}

机构：

[1] Tech Univ Munich, FRM 2, D-8000 Munich, Germany

[2] Tech Univ Munich, Fac Phys E21, D-8000 Munich, Germany

[3] Phys Consulting, Zorneding, Germany

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2011年 / 651卷 / 01期

关键词：

Biological shielding; Neutron and gamma radiation; Recycling; Thinner shielding elements;

D O I：

10.1016/j.nima.2010.12.239

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

At neutron research facilities all around the world radiation shieldings are applied to reduce the background of neutron and gamma radiation as far as possible in order to perform high quality measurements and to fulfill the radiation protection requirements. The current approach with cement-based compounds has a number of shortcomings: "Heavy concrete" contains a high amount of elements, which are not desired to obtain a high attenuation of neutron and/or gamma radiation (e.g. calcium, carbon, oxygen, silicon and aluminum). A shielding material with a high density of desired nuclei such as iron, hydrogen and boron was developed for the redesign of the neutron radiography facility ANTARES at beam tube 4 (located at a cold neutron source) of FRM-II. The composition of the material was optimized by help of the Monte Carlo code MCNPS. With this shielding material a considerable higher attenuation of background radiation can be obtained compared to usual heavy concretes. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：77 / 80

页数：4