A permanently sealed multiwire proportional chamber with two-dimensional readout for X-ray applications in the region 20–60 keV

1976 ◽  
Vol 135 (1) ◽  
pp. 197-202 ◽  
Author(s):  
A. Dwuraźny ◽  
M. Waligórski ◽  
K. Jeleń ◽  
K.W. Ostrowski
Keyword(s):  
Two Dimensional ◽  
X Ray ◽  
Proportional Chamber ◽  
Multiwire Proportional Chamber

A small-angle X-ray camera using a two-dimensional multiwire proportional chamber

1987 ◽  
Vol 20 (1) ◽  
pp. 16-22 ◽  
Author(s):  
T. Furuno ◽  
H. Sasabe ◽  
A. Ikegami
Keyword(s):  
Small Angle ◽  
Arachidic Acid ◽  
Electronic System ◽  
Two Dimensional ◽  
Blodgett Film ◽  
X Ray ◽  
Proportional Chamber ◽  
Multiwire Proportional Chamber ◽  
Diffraction Patterns ◽  
And Performance

The construction and performance of a small-angle X-ray camera equipped with a two-dimensional multiwire proportional chamber (two-dimensional MWPC) are described. The system has been used for studies of the structure of biological samples with a conventional rotating-anode X-ray source. The small-angle camera is of Franks type with two orthogonal platinum-coated bent optical flats placed in a helium-tight box. The specimen-to-detector distance is variable between 60 and 260 cm. The sensitive area of the two-dimensional MWPC is 256 × 256 mm with 256 × 256 resolution elements. The camera covers high angles up to about 5 Å, although diffraction line widths in this region are highly broadened owing to parallax. The electronic system comprises NIM modules, a hand-made module and a commercially available compact two-dimensional multichannel analyser (two-dimensional MCA). The two-dimensional MCA has a memory size of 256 × 256 channels (24 bits/channel). The estimated dead time of this system is approximately 5 μs, which permits a maximum count rate of 20 kHz at 10% loss. Diffraction patterns of a Langmuir–Blodgett film of arachidic acid and stacked purple membranes and a solution scattering of horse spleen apoferritin are demonstrated as examples.

Microstrip Gas Counters

2014 ◽  
pp. 31-51
Keyword(s):  
Glass Surface ◽  
Two Dimensional ◽  
Large Area ◽  
Proportional Chamber ◽  
Microelectronic Technology ◽  
Multiwire Proportional Chamber ◽  
Dimensional Version ◽  
A Chain ◽  
New Generation ◽  
First Time

In this chapter, the first micropattern gaseous detector, the microstrip gas counter, invented in 1988 by A. Oed, is presented. It consists of alternating anode and cathode strips with a pitch of less than 1 mm created on a glass surface. It can be considered a two-dimensional version of a multiwire proportional chamber. This was the first time microelectronic technology was applied to manufacturing of gaseous detectors. This pioneering work offers new possibilities for large area planar detectors with small gaps between the anode and the cathode electrodes (less than 0.1 mm). Initially, this detector suffered from several serious problems, such as charging up of the substrate, discharges which destroyed the thin anode strips, etc. However, by efforts of the international RD28 collaboration hosted by CERN, most of them were solved. Although nowadays this detector has very limited applications, its importance was that it triggered a chain of similar developments made by various groups, and these collective efforts finally led to the creation of a new generation of gaseous detectors-micropattern detectors.

A fast X-ray diffractometer based on a spherical drift multiwire proportional chamber

1980 ◽  
Vol 172 (1-2) ◽  
pp. 337-344 ◽  
Author(s):  
R. Kahn ◽  
R. Fourme ◽  
B. Caudron ◽  
R. Bosshard ◽  
R. Benoit ◽  
...  
Keyword(s):  
X Ray ◽  
Proportional Chamber ◽  
Multiwire Proportional Chamber

A coordinate X-ray diffractometer based on a two-dimensional proportional chamber and a two-circle goniometer

1982 ◽  
Vol 15 (6) ◽  
pp. 626-631 ◽  
Author(s):  
M. E. Andrianova ◽  
D. M. Kheiker ◽  
A. N. Popov ◽  
V. I. Simonov ◽  
Y. S. Anisimov ◽  
...  
Keyword(s):  
Two Dimensional ◽  
X Ray ◽  
Proportional Chamber
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