Advanced two-dimensional thermal neutron detectors for scattering studies

被引：0

作者：

Fried, J ^{[1
]}

Harder, JA ^{[1
]}

Mahler, GJ ^{[1
]}

Makowiecki, DS ^{[1
]}

Mead, JA ^{[1
]}

Radeka, V ^{[1
]}

Schaknowski, NA ^{[1
]}

Smith, GC ^{[1
]}

Yu, B ^{[1
]}

机构：

[1] Brookhaven Natl Lab, Upton, NY 11973 USA

来源：

ADVANCES IN NEUTRON SCATTERING INSTRUMENTATION | 2002年 / 4785卷

关键词：

neutron detector; position sensitive; imaging;

D O I：

10.1117/12.456300

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Advances in neutron scattering studies will be given a large boost with the advent of new spallation and reactor sources at present under consideration or construction. An important element for future experiments is a commensurate improvement in neutron detection techniques. At Brookhaven, a development program is under way for greatly increasing the angular coverage, rate capability and resolution of detectors for scattering studies. For example, a curved detector with angular coverage of 120degrees x 15degrees has recently been developed for protein crystallography at a spallation source. Based on neutron detection using He-3, the detector has the following major, new attributes: eight identical proportional wire segments operating in parallel, a single gas volume with seamless readout at segment boundaries, parallax errors eliminated in the horizontal plane by the detector's appropriate radius of curvature, high-throughput front-end electronics, position decoding based on high performance digital signal processing. The detector has a global rate capability greater than 1 million per second, position resolution less than 1.5 mm FWHM, timing resolution about 1mus, efficiency of 50% and 90% at 1 Angstrom and 4 Angstrom respectively, and an active area 1.5 m x 20 cm.

引用

页码：197 / 202

页数：6

共 4 条

[1]

Radeka V, 1996, BASIC LIFE SCI, V64, P57

[2] CENTROID FINDING METHOD FOR POSITION-SENSITIVE DETECTORS [J].