High resolution position-sensitive detector for thermal neutrons

1988 ◽  
Vol 35 (1) ◽  
pp. 78-80 ◽  
Author(s):  
R. Kurz ◽  
K.D. Muller ◽  
J. Schelten ◽  
A. Szepesvary ◽  
W. Schafer ◽  
...  
Keyword(s):  
High Resolution ◽  
Position Sensitive Detector ◽  
Thermal Neutrons ◽  
Sensitive Detector ◽  
Position Sensitive

scholarly journals A two-dimensional position-sensitive detector for thermal neutrons

1975 ◽  
Vol 127 (4) ◽  
pp. 507-523 ◽  
Author(s):  
J. Alberi ◽  
J. Fischer ◽  
V. Radeka ◽  
L.C. Rogers ◽  
B. Schoenborn
Keyword(s):  
Position Sensitive Detector ◽  
Thermal Neutrons ◽  
Two Dimensional ◽  
Sensitive Detector ◽  
Position Sensitive

Modernization of the small-angle neutron scattering spectrometer SANS-U by upgrade to a focusing SANS spectrometer

2011 ◽  
Vol 44 (3) ◽  
pp. 558-568 ◽  
Author(s):  
Hiroki Iwase ◽  
Hitoshi Endo ◽  
Masaki Katagiri ◽  
Mitsuhiro Shibayama
Keyword(s):  
High Resolution ◽  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Position Sensitive Detector ◽  
Incident Neutron ◽  
Sensitive Detector ◽  
Energy Agency ◽  
Position Sensitive ◽  
Position Sensitive Photomultiplier Tube

The small-angle neutron scattering spectrometer SANS-U at the research reactor (JRR-3) of the Japan Atomic Energy Agency, Tokai, Japan, has been successfully upgraded. This major upgrade was undertaken in order to install a high-resolution position-sensitive detector consisting of a cross-wired position-sensitive photomultiplier tube combined with a ZnS/6LiF scintillator on the SANS-U spectrometer. Without changing the total length of the spectrometer, the aim was to extend the accessible low-Qlimit (Qis the magnitude of the scattering vector) and to shorten the measurement time by employing focusing small-angle neutron scattering (FSANS). By using both spherical MgF2biconcave lenses and the new high-resolution position-sensitive detector, the accessible low-Qlimit was extended from 2.5 × 10−3to 3.8 × 10−4 Å−1. As a result, SANS-U can continuously cover a wideQrange from 3.8 × 10−4to 0.35 Å−1with a wavelength of 7 Å. FSANS can be utilized not only to improve the accessible low-Qlimit but also to increase the intensity of incident neutrons passing through the sample in the conventionalQrange from 2.5 × 10−3to 0.35 Å−1. The use of `high-intensity' FSANS also allowed a reduction of the measuring time by approximately 1/3.16 by increasing the incident neutron intensity.

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