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VACUUM ›› 2020, Vol. 57 ›› Issue (5): 57-60.doi: 10.13385/j.cnki.vacuum.2020.05.12

• Measurement and Control • Previous Articles     Next Articles

Influence of Ionization Gauge Position on Measurements

CUI Yu-hao, DOU Ren-chao, SHI Li-xia, LIU Xing-yue   

  1. Beijing Institute of Spacecraft Environment Engineering, Beijing 100094, China
  • Received:2019-08-20 Published:2020-11-06

Abstract: In this article, the influence of the ionization gauge position on the measurements was simulated by the method of Monte Carlo. The vacuum container, gauge position and flanges were established. The material outgassing was taken into account. The ionization gauge installed at different positions was calculated. The influence of distance between ionization gauge probe and piping flange entrance on the measurement was calculated too. The results show that compared with the installation position of ionization gauge, the distance between the probe of ionization gauge and the pipe orifice shows more influence on the measurement. This paper provides a theoretical basis for the design of piping flange length and the prediction of actual vacuum.

Key words: ionization gauge, monte carlo method, molecule flow

CLC Number: 

  • TB772
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