THE ESCAPE GATING TECHNIQUE FOR A MULTIWIRE PROPORTIONAL CHAMBER

SHEN Chang-Quan; SHEN Pei-Ruo; YE Zong-Nan; LI Xiao-Nan

Chinese Physics C> 1989, Vol. 13> Issue(5) : 385-392

THE ESCAPE GATING TECHNIQUE FOR A MULTIWIRE PROPORTIONAL CHAMBER

Institute of High Energy Physics,Academia Sinica2 Physics Department,Zhengzhou University

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Abstract：
When hard X-ray is detected by a multiwire proportional chamber filled with Xe or Kr,the intrinsic K-fluorescent photon,which of ten escapes from the original cell and is absorbed in other cell of the chamber,provides an accomtanied signal with certain amplitude.A processing technique of such signal,called escape gating technique,can improve both the energy resolution and background rejection efficiency of the detector.In this paper,we describe this technique and its application in our balloon borne hard X-ray spectroscope successfully launched on 31 August,1987,at an altitude of 37 km above sea level near Beijing.

References

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P. Ubertini et al., Nucl. Instr. Meth., 217(1983), 97.[2] G. Bibbo and P. W. Sanford, Nucl. Instr. Meth., 179(1981), 189.[3] D. P. Sharma et al., 20th International Cosmic Ray Conference Vol.29, 1-3 (August 2-15, 1987 Moscow).[4] 沈长锉等，核技术，io, No.6(1987年),5.[5] F. Sauli, "Principles of Operation of Multiwire Proportional and Drift Chambers" CERN 77-09 3rd May"1977.[6] E. F. Plechaty et al. "Tables and Graphs of Photon Interaction Cross Sections from 1.0 kev to 100 MeV Derived from LLL Evaluated Nuclear Data Library" (1975) UCRL-50400 Vol. 6, Rev.[7] 叶宗男、沈长铨，“空间硬X射线谱仪数据获取系统”，核电子学与探测技术(待发表).

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SHEN Chang-Quan, SHEN Pei-Ruo, YE Zong-Nan and LI Xiao-Nan. THE ESCAPE GATING TECHNIQUE FOR A MULTIWIRE PROPORTIONAL CHAMBER[J]. Chinese Physics C, 1989, 13(5): 385-392.

SHEN Chang-Quan, SHEN Pei-Ruo, YE Zong-Nan and LI Xiao-Nan. THE ESCAPE GATING TECHNIQUE FOR A MULTIWIRE PROPORTIONAL CHAMBER[J]. Chinese Physics C, 1989, 13(5): 385-392. 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

THE ESCAPE GATING TECHNIQUE FOR A MULTIWIRE PROPORTIONAL CHAMBER

Corresponding author: SHEN Chang-Quan,

Institute of High Energy Physics,Academia Sinica2 Physics Department,Zhengzhou University

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1989-05-05

Abstract: When hard X-ray is detected by a multiwire proportional chamber filled with Xe or Kr,the intrinsic K-fluorescent photon,which of ten escapes from the original cell and is absorbed in other cell of the chamber,provides an accomtanied signal with certain amplitude.A processing technique of such signal,called escape gating technique,can improve both the energy resolution and background rejection efficiency of the detector.In this paper,we describe this technique and its application in our balloon borne hard X-ray spectroscope successfully launched on 31 August,1987,at an altitude of 37 km above sea level near Beijing.