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Characterization and calibration of a capacitive diaphragm gauge manometer for the measurement of dust particles in vacuum
- Authors
- Cho, Soon-Gook; Hong, Suk-Ho; Woo, Hyun-Jong; Park, Sam-Jin; Park, Eun Kyong; Oh, Young-Suk; Kim, Jin-Woo; Chung, Kyu Sun
- Issue Date
- Jul-2013
- Publisher
- ELSEVIER
- Citation
- JOURNAL OF NUCLEAR MATERIALS, v.438, pp.S953 - S958
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF NUCLEAR MATERIALS
- Volume
- 438
- Start Page
- S953
- End Page
- S958
- ISSN
- 0022-3115
- Abstract
- A capacitive diaphragm gauge (CDG) has been modified to measure the amount of accumulated in-vessel dust in tokamaks. In order to pin point the mass load on the CDG, aluminum dish is used. Calibrations show that the CDG has a measurement range from 2.2 g to 6.7 g with a minimum detection mass of 30 mg. Long term stability of measured signal is obtained at least more than 12 h operation with the atmospheric pressure and under vacuum. The CDG will be installed in KSTAR (Korea Superconducting Tokamak Advanced Research) device in 2012 campaign to measure the amount of in-vessel dusts.
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