RESEARCH ON SOME CHARACTERISTICS AND IMPROVEMENTS OF A 70cm STREAMER CHAMBER

The Second Experimental Division

Chinese Physics C> 1983, Vol. 7> Issue(3) : 273-284

RESEARCH ON SOME CHARACTERISTICS AND IMPROVEMENTS OF A 70cm STREAMER CHAMBER

The Second Experimental Division

Institute of High Energy Physics, Academia Sinica

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Abstract：
In this paper the influence of various proportion of Ne-He gases and the time delay on the quality of streamer tracks has been studied. The diameterand density of streamers under these mixed-gas conditions have been measured.
The time resolution of this streamer chamber was determined to be 2.1μs in 69% Ne+31% He+8×10^－8 SF₆, and as 177μs in pure neon by using the exponentially decreasing relation of streamer desity with delay time. The spatial resolution was determined to be 0.32mm in Ne+3×10^－8 SF₆ by measuring the streamer diameters, and the method of track standard deviation was also used.
Some results show that the diameter and brightness increase with increasing high voltage, but become rather even when high voltage continues increasing.
Photographs were taken with domestically produced special film (32 DIN, 60 lines/mm), being similar to Kodak SO-143.
A special designed central electrode of the streamer chamber with its wires inlaid in lucite plate is successful for preventing gas from breakdown near wires. Besides, delay time has been reduced to 1.3μs, mainly by the Marx generator and its trigger system the parameters of which have been chosen by a series of experiments.

References

[1]

V. A Davidenko et al., Nucl. Instr. Meth., 67 (1969), 325;V. a. Davidenko et al.; Nucl. instr. Meth., 75(1969), 277.[2] F. Bulos et al., IEEE Trans. on NS12(1965) 22.[3] Eckart Diplomat, Meosung der Ionisation mit der Streamer gammer (1974).[4] K. Eggert and W. Thome, Nucl. Instr. Meth., 126(1975) 477.[5] 中国科学院高能物理所, 物理二室, “七十厘米流光室系统”, “高能物理与核物理”, 6(1982)1[6] P. Riee-Evans, Spark, Streamer, Proportional and Drift Chambers, London (1974).[7] O. C. Allkofer, Spark Chambers, Munich (1969).[8] G. E. Chikovani et al., Nucl. Instr. Meth., 29(1964) 261.[9] V. Eeka.rdt et al., Nucl. Instr. Meth., 143(1977) 235.[10] F. Bulos et al., Streamer Chamber Development, SLAG Report, No. 74(1967).[11] A. Grigorian et al. The UCLA-LBL Streamer Chamber Facility Proe. of the First工ntern. Conf. on Streamer Chamber Technology, (Argonne, 1972).[12] N. F. Aniaimova et al. Pribory i Tehk, Easperimenta, No. 2(1971) 70.[13] P. Sokolsky, The Univereity of Illinois-ANL Streamer Chamber, Proe. of the First Intern. Conf. on Streamer Chamber Technology, (Argonne, 1972). A. Abshian et a1. Nucl. Instr. Meth., 115(1974) 455.

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The Second Experimental Division. RESEARCH ON SOME CHARACTERISTICS AND IMPROVEMENTS OF A 70cm STREAMER CHAMBER[J]. Chinese Physics C, 1983, 7(3): 273-284.

The Second Experimental Division. RESEARCH ON SOME CHARACTERISTICS AND IMPROVEMENTS OF A 70cm STREAMER CHAMBER[J]. Chinese Physics C, 1983, 7(3): 273-284. shu

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

RESEARCH ON SOME CHARACTERISTICS AND IMPROVEMENTS OF A 70cm STREAMER CHAMBER

The Second Experimental Division

Institute of High Energy Physics, Academia Sinica

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1983-06-05

Abstract: In this paper the influence of various proportion of Ne-He gases and the time delay on the quality of streamer tracks has been studied. The diameterand density of streamers under these mixed-gas conditions have been measured.
The time resolution of this streamer chamber was determined to be 2.1μs in 69% Ne+31% He+8×10^－8 SF₆, and as 177μs in pure neon by using the exponentially decreasing relation of streamer desity with delay time. The spatial resolution was determined to be 0.32mm in Ne+3×10^－8 SF₆ by measuring the streamer diameters, and the method of track standard deviation was also used.
Some results show that the diameter and brightness increase with increasing high voltage, but become rather even when high voltage continues increasing.
Photographs were taken with domestically produced special film (32 DIN, 60 lines/mm), being similar to Kodak SO-143.
A special designed central electrode of the streamer chamber with its wires inlaid in lucite plate is successful for preventing gas from breakdown near wires. Besides, delay time has been reduced to 1.3μs, mainly by the Marx generator and its trigger system the parameters of which have been chosen by a series of experiments.