Performance study of trial M-THGEM

  • Shao-Qing Deng
  • Wen-Qi Yan
  • Dao-Jin Hong
  • Bo-Xiang Yu
  • Gao-Long ZhangEmail author
  • Yu-Guang Xie
Original Paper



M-THGEM is a new type of electron multiplier, which is developed with a high gain, good stability and uniformity based on THGEM. With the successful application of small area M-THGEM, the large-area M-THGEM is proposed based on large-volume gas detector.


The production of large-area M-THGEM is difficult compared with the small one with more holes and more stable instruments. To meet the requirements of large-area gas detectors, the performances of the large-area M-THGEM need to be measured and researched, which will provide a guidance on the process and design of the M-THGEM.


The M-THGEM membrane was loaded into a chamber to complete the test under the conditions of \(^{55}\)Fe/X-ray source (5.9 keV) and working gas Ar:iC\(_4\)H\(_{10}\) = 97:3. The performance of gain, energy resolution, uniformity and long-term stability can be tested.


Based on the small area M-THGEM, the research and design of large-area M-THGEM with \(200 \times 200\,\mathrm{mm}^2\) were finished. The basic performances were measured. The results show that the gain with the working gas of Ar:iC\(_4\)H\(_{10}\) = 97:3 can reach to \(6 \times 10^3\) , and the energy resolution of the \(^{55}\)Fe /X-ray source (5.9 keV) reaches 29.4% with a good gain uniformity and stability.


At present, the production and measurement of the large-area M-THGEM has been finished. The M-THGEM of \(200 \times 200\,\mathrm{mm}^2\) shows a good performance, which will provide many references for the future design.


M-THGEM Gain Energy resolution Stability 



Thanks to the National Key Laboratory of Nuclear Detection and Nuclear Electronics of the Institute of High Energy Physics, Chinese Academy of Sciences. The project was supported by the National Natural Science Foundation of China under Grant Nos. 11975040, 11575221, 11475013, U1832130, the National Key Research and Development Plan No. 2016YFA0400400 and the project of the National Key Laboratory of Nuclear Detection and Nuclear Electronics of the Institute of High Energy Physics No. H929420JTD.


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Copyright information

© Institute of High Energy Physics, Chinese Academy of Sciences; Nuclear Electronics and Nuclear Detection Society 2019

Authors and Affiliations

  • Shao-Qing Deng
    • 1
  • Wen-Qi Yan
    • 2
  • Dao-Jin Hong
    • 3
  • Bo-Xiang Yu
    • 2
    • 4
    • 5
  • Gao-Long Zhang
    • 1
    • 6
    Email author
  • Yu-Guang Xie
    • 2
    • 4
  1. 1.School of Physics and Nuclear Energy EngineeringBeihang UniversityBeijingChina
  2. 2.Institute of High Energy PhysicsChinese Academy of SciencesBeijingChina
  3. 3.University of Science and Technology of ChinaHefeiChina
  4. 4.State Key Laboratory of Particle Detection and ElectronicsBeijingChina
  5. 5.University of Chinese Academy of SciencesBeijingChina
  6. 6.Beijing Advanced Innovation Center for Big Data-Based Precision MedicineBeihang UniversityBeijingChina

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