A high-resolution lateral displacement sensing method using active illumination of a cooperative target and a focused four-quadrant position-sensitive detector

1995 ◽  
Vol 44 (1) ◽  
pp. 46-52 ◽  
Author(s):  
A.J. Makynen ◽  
J.T. Kostamovaara ◽  
R.A. Myllyla
Keyword(s):  
High Resolution ◽  
Lateral Displacement ◽  
Position Sensitive Detector ◽  
Sensitive Detector ◽  
Position Sensitive ◽  
Active Illumination ◽  
Four Quadrant

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.

High-resolution synchrotron X-ray powder diffraction with a linear position-sensitive detector

1988 ◽  
Vol 21 (6) ◽  
pp. 905-910 ◽  
Author(s):  
M. S. Lehmann ◽  
A. N. Christensen ◽  
M. Nielsen ◽  
R. Feidenhans'l ◽  
D. E. Cox
Keyword(s):  
High Resolution ◽  
Powder Diffraction ◽  
Position Sensitive Detector ◽  
Sensitive Detector ◽  
X Ray ◽  
Position Sensitive
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