Open AccessИсследование состава остаточного газа в вакуумной системе циклотрона ФТИ им. А.Ф. Иоффе
Author(s) -
Н.Н. Аруев,
М.А. Козловский,
М.Ф. Кудояров,
М.Я. Патрова,
П.А. Романов,
Р.В. Тюкальцев,
И.Л. Федичкин,
С.В. Филиппов
Publication year - 2019
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2019.16.48153.17860
Subject(s) - cyclotron , mass spectrometry , vacuum chamber , residual gas analyzer , irradiation , ion , spectrometer , ionization chamber , analytical chemistry (journal) , chemistry , materials science , atomic physics , nuclear physics , physics , optics , ionization , chromatography , organic chemistry , composite material
4. Using the FT-200 compact-size time-of-flight mass spectrometer developed at the Ioffe Institute, the mass spectra of the residual gas molecules in the vacuum system of the Ioffe Institute cyclotron have been obtained under various experimental conditions. The measurements were carried out in the cyclotron vacuum chamber and the end part of the ion guide near the sample irradiation chamber. It was found that the main contribution to the residual gas composition in the cyclotron chamber is made by the molecules of pump oil used (up to 82%) and water molecules (up to 15-17%), and in the ion guide near the irradiation chamber with a polymer film - water molecules (up to 63%). The data obtained are the basis for the modernization of the Ioffe cyclotron complex.