A hybrid structure gaseous detector for ion backflow suppression

Yu-Lian Zhang; Hui-Rong Qi; Bi-Tao Hu; Hai-Yun Wang; Qun Ou-Yang; Yuan-Bo Chen; Jian Zhang; Zhi-Wen Wen

doi:10.1088/1674-1137/41/5/056003

Chinese Physics C> 2017, Vol. 41> Issue(5) : 056003 DOI: 10.1088/1674-1137/41/5/056003

A hybrid structure gaseous detector for ion backflow suppression

Yu-Lian Zhang ^1,2,3 ,
Hui-Rong Qi ^2,3,, ,
Bi-Tao Hu ^1,, ,
Hai-Yun Wang ^2,3,4 ,
Qun Ou-Yang ^2,3 ,
Yuan-Bo Chen ^2,3 ,
Jian Zhang ^2,3 ,
Zhi-Wen Wen ^1,2,3

1.
School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
2.
State Key Laboratory of Particle Detection and Electronics, Beijing 100049, China
3.
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
4.
State Key Laboratory of Particle Detection and Electronics, Beijing 100049, China
5.
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
6.
School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
7.
Graduate University of Chinese Academy of Sciences, Beijing 100049, China

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Abstract：
A new concept for a hybrid structure gaseous detector module with ion backflow suppression for the time projection chamber in a future circular collider is presented. It is a hybrid structure cascaded Gas Electron Multiplier (GEM) with a Micromegas detector. Both Micromegas and GEM have the capability to naturally reduce most of the ions produced in the amplification region. The GEM also acts as the preamplifer device and increases gas gain together with the Micromegas. Feasibility tests of the hybrid detector are performed using an ⁵⁵Fe X-ray source. The energy resolution is better than 27% for 5.9keV X-rays. It is demonstrated that a backflow ratio better than 0.2% can be reached in the hybrid readout structure at a gain of 5000.
- Micro Pattern Gaseous Detector (MPGD) ,
- Gas Electron Multiplier (GEM) ,
- Micro-mesh gaseous structure (Micromegas) ,
- ion backflow (IBF)

References

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Yu-Lian Zhang, Hui-Rong Qi, Bi-Tao Hu, Hai-Yun Wang, Qun Ou-Yang, Yuan-Bo Chen, Jian Zhang and Zhi-Wen Wen. A hybrid structure gaseous detector for ion backflow suppression[J]. Chinese Physics C, 2017, 41(5): 056003. doi: 10.1088/1674-1137/41/5/056003

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Received: 2016-10-11
Revised: 2016-12-26

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Supported by National Key Programme for ST Research and Development (2016YFA0400400) and by National Natural Science Foundation of China (11275224)

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

A hybrid structure gaseous detector for ion backflow suppression

Corresponding author: Hui-Rong Qi,

Corresponding author: Bi-Tao Hu,

1. School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
2. State Key Laboratory of Particle Detection and Electronics, Beijing 100049, China
3. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
4. State Key Laboratory of Particle Detection and Electronics, Beijing 100049, China
5. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
6. School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
7. Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2016-10-11
Accepted Date: 2016-12-26
Available Online: 2017-05-05

Fund Project: Supported by National Key Programme for ST Research and Development (2016YFA0400400) and by National Natural Science Foundation of China (11275224)

Abstract: A new concept for a hybrid structure gaseous detector module with ion backflow suppression for the time projection chamber in a future circular collider is presented. It is a hybrid structure cascaded Gas Electron Multiplier (GEM) with a Micromegas detector. Both Micromegas and GEM have the capability to naturally reduce most of the ions produced in the amplification region. The GEM also acts as the preamplifer device and increases gas gain together with the Micromegas. Feasibility tests of the hybrid detector are performed using an ⁵⁵Fe X-ray source. The energy resolution is better than 27% for 5.9keV X-rays. It is demonstrated that a backflow ratio better than 0.2% can be reached in the hybrid readout structure at a gain of 5000.