scholarly journals Four Channel Mini Wire Chamber to Study Cosmic Rays

2018 ◽  
Vol 172 ◽  
pp. 07005
Author(s):  
J. Felix ◽  
G. J. Rodriguez

Multiwire proportional chamber is a conventional technique to study radiation in general, and cosmic rays in particular. To study cosmic rays, it was planned, designed, constructed, characterized, and tested a four channel mini wire chamber, based on two 3 cm × 3 cm × 0.6 cm Aluminum frames, two 3 cm × 3 cm × 0.6 cm plastic frames, two 3 cm × 3 cm × 0.3 cm Aluminum frames, two electronic planes each with two Tungsten Gold plated 1 mil diameter wires, parallel and 1 cm apart each other at 25 g stretched-each plane was 90° rotated each other in the final assemble- and two Aluminum foil window to define the gas volume; it was operated with Argon 90%-CH4 10% gas mixture at 1 atmosphere and ambient temperature (20°C in the average). It is presented technical details, results on characterization, and preliminary results on cosmic rays detection.

1991 ◽  
Vol 38 (2) ◽  
pp. 703-708 ◽  
Author(s):  
J. Suckling ◽  
R.J. Ott ◽  
P.K. Marsden ◽  
J.E. Bateman ◽  
J.F. Connelly ◽  
...  

1975 ◽  
Vol 127 (1) ◽  
pp. 29-39 ◽  
Author(s):  
E. Beardsworth ◽  
J. Fischer ◽  
S. Iwata ◽  
M.J. Levine ◽  
V. Radeka ◽  
...  

1982 ◽  
Vol 92 (3) ◽  
pp. 154-156 ◽  
Author(s):  
R. Bellazzini ◽  
G. Betti ◽  
A. Del Guerra ◽  
M.M. Massai ◽  
M. Ragadini ◽  
...  

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.


2018 ◽  
Vol 46 ◽  
pp. 1860079
Author(s):  
Shuai Wang

The STAR experiment at RHIC is upgrading the inner sectors of the Time Projection Chamber (iTPC) to increase the segmentation on the inner padplane from 13 to 40 rows and to replace the inner sector multiwire proportional chamber (MWPC). The upgrade will provide better momentum resolution, better dE/dx resolution, and most importantly it will provide improved acceptance at high rapidity to [Formula: see text]1.5 compared to the current TPC coverage of [Formula: see text]1.0. The enhanced TPC capabilities based on this upgrade are critical to the physics program of the Beam Energy Scan Phase II at RHIC during 2019-2020, in particular the QCD phase transition study. In this proceedings, the iTPC MWPC module fabrication and prototype testing results are discussed.


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