STUDY OF PARTIAL PRESSURES OF GASES IN VACUUM CHAMBER USING MULTIFUNCTIONAL HIGH-VACUUM PLANT

During ground testing of onboard spacecraft equipment it is necessary to create such operating conditions, when technological pump plants don’t influence the results of ongoing tests and parameters of onboard equipment. Article presents research of gas mass spectrum inside vacuum chamber, during vacuum pumping, using different types of high-vacuum plants. Operating mode of the multifunctional high-vacuum plant, which provide minimum volume inside the vacuum chamber without additional heating, is shown. Graphs of partial gas pressures for different cases of high-vacuum pumps at joint work of various high-vacuum pumps are presented. Test results show the most optimal mode of joint operation of high-vacuum plants.

Authors: А. N. Sokolov, M. Z. Schedrinsky, V. M. Bebyakov, М. G. Vorobev, V. A. Sinkova, K. N. Sukharev, L. N. Rozanov

Direction: Physics

Keywords: High vacuum unit, partial pressure, mass-spectrometer, ground testing, cryovacuum system

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