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.

scholarly journals Status of the two-dimensional, multi-wire proportional chamber detector for the China Spallation Neutron Source

2018 ◽  
Vol 48 ◽  
pp. 1860121 ◽  
Author(s):  
Zhiwen Wen ◽  
Huirong Qi
Keyword(s):  
Neutron Source ◽  
Neutron Detector ◽  
Detection Efficiency ◽  
Spallation Neutron Source ◽  
Two Dimensional ◽  
Large Area ◽  
Position Resolution ◽  
Proportional Chamber ◽  
High Detection Efficiency ◽  
Under Construction

The re-designed two-dimensional, multi-wire proportional chamber (MWPC) detector based on the [Formula: see text]He operation gas has been developed for the multifunctional reflection spectrum detection requirements in China Spallation Neutron Source (CSNS), which is under construction in Guangdong province, China. This efficient thermal neutron detector with large area (200 mm [Formula: see text] 200 mm active area), two-dimensional position sensitive (<2 mm of position resolution), high detection efficiency (>65% in the wavelength of 1.8Å) and good n/[Formula: see text] discrimination would meet some requirements in CSNS The neutron detector consists of a MWPC detector and a high-pressure gas vessel. The wire readout structures of the detector and the gas purity device have been optimized based on previous design and testing. The re-designed MWPC detector with an absorber thickness of 10 mm and 8.5 atm operating gas mixture of [Formula: see text]He and C[Formula: see text]H[Formula: see text] was constructed. Using the non-return valve manufactured by Swagelok, the gas purity device was developed to clean the water and remove gas impurities. The effective cycle time can be up to 50 min per sequence. The performance of the position resolution and the two-dimensional imaging accuracy by the traditional center of gravity readout method was studied with an X-ray radiation source and the neutron source. At the end of this year, the detector will be mounted at CSNS and studied using the neutron source.

Image quantification with a large area multiwire proportional chamber positron camera (MUP-PET)

1989 ◽  
Vol 15 (11) ◽  
pp. 694-700 ◽  
Author(s):  
S. R. Cherry ◽  
P. K. Marsden ◽  
R. J. Ott ◽  
M. A. Flower ◽  
S. Webb ◽  
...  
Keyword(s):  
Image Quantification ◽  
Large Area ◽  
Proportional Chamber ◽  
Multiwire Proportional Chamber

Description of an ultrathin multiwire proportional chamber-based detector and application to the characterization of theSpraguea lophii(Microspora) two-dimensional genome fingerprint

2004 ◽  
Vol 25 (20) ◽  
pp. 3365-3377 ◽  
Author(s):  
Lamjed Mansour ◽  
Chafik Cheikali ◽  
Pierre Desaunais ◽  
Jean-Pierre Coulon ◽  
Josette Daubin ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Proportional Chamber ◽  
Multiwire Proportional Chamber

Stepped Gate Polysilicon Thin-Film Transistor for Large Area Power Applications

1998 ◽  
Vol 508 ◽  
Author(s):  
J. Aschenbeck ◽  
Y. Chen ◽  
F. Clough ◽  
Y. Z. Xu ◽  
E. M. Sankara Narayanan ◽  
...  
Keyword(s):  
Thin Film ◽  
Density Of States ◽  
Low Voltage ◽  
Thin Film Transistor ◽  
Device Performance ◽  
Two Dimensional ◽  
Large Area ◽  
Switching Speed ◽  
Field Plate ◽  
First Time

AbstractFor the first time, we report a new poly-Si stepped gate Thin Film Transistor (SG TFT) on glass. The Density of States extracted from measured I-V characteristics has been used to evaluate the device performance with a two dimensional device simulator. The results show that the three-terminal SG TFT device has a switching speed comparable to a low voltage structure and the high on-current capability of a metal field plate (MFP) TFT and the potential for comparable breakdown characteristics.

scholarly journals High Efficiency Gaseous Tracking Detector for Cosmic Muon Radiography

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Dezső Varga ◽  
Gábor Nyitrai ◽  
Gergő Hamar ◽  
László Oláh
Keyword(s):  
High Efficiency ◽  
Detection Efficiency ◽  
Observation System ◽  
Large Area ◽  
Position Resolution ◽  
Proportional Chamber ◽  
Muon Radiography ◽  
Tracking Detector ◽  
Multiwire Proportional Chamber ◽  
Gas Consumption

A tracking detector system has been constructed with an innovative approach to the classical multiwire proportional chamber concept, using contemporary technologies. The detectors, covering an area of 0.58 square meters each, are optimized for the application of muon radiography. The main features are high (>99.5%) and uniform detection efficiency, 9 mm FWHM position resolution, and filling gas consumption below 2 liters per hour for the nontoxic, nonflammable argon and carbon dioxide mixture. These parameters, along with the simplicity of the construction and the tolerance for mechanical effects, make the detectors a viable option for a large area muography observation system.

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.

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