Nuclear Techniques ›› 2016, Vol. 39 ›› Issue (9): 90402-090402.doi: 10.11889/j.0253-3219.2016.hjs.39.090402


THGEM-based two dimension position detector for low energy electron

YAN Jiaqing1,2, XIE Yuguang2,3, HU Tao2,3, LYU Junguang2,3, ZHOU Li2,3   

  1. 1. Research Institute No.290 China National Nuclear Corporation, Shaoguan 512026, 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
  • Received:2016-04-01 Revised:2016-06-21 Online:2016-09-10 Published:2016-09-09
  • Supported by:

    Supported by National Natural Science Foundation of China(No.11205173),State Key Laboratory of Particle Detection and Electronics(No.H9294206T)


Background: The thick gaseous electron multiplier(THGEM)is homemade with the hole diameter of 150μm,pitch of 400μm,and thickness of 100μm.Purpose: A THGEM-based 2D position detector is developed for low energy electron detection.Methods: The influences of film's thickness,air-layer's thickness,etc.,on the electron transfer efficiency and transverse diffusion were simulated by Geant4 and using the 5.9-keV X-rays,and the gas gain,energy resolution were measured in different gas mixtures.Results: According to the simulation results,the design and structure of the detector were optimized and the maximum gas gain of single and double layer THGEMs reached 1×104 and 6×104,respectively,and the energy resolution was higher than 23% for both single-and double-layer THGEMs.Conclusion: The spatial resolution is required less than 200μm in 50mm×50mm sensitive area.

Key words: THGEM, Low energy electron, 2D position, Geant4

CLC Number: 

  • TL82