Gas species, their evolution and segregation through the ITER vacuum systems

R. J.H. Pearce; A. Antipenkov; J. L. Bersier; B. Boussier; S. Bryan; M. Dremel; S. Hughes; I. Sekachev; L. Worth; L. Baylor; W. Gardner; S. Meitner; P. Wikus; R. Laesser; S. Papastergiou

doi:10.1016/j.vacuum.2012.03.048

Gas species, their evolution and segregation through the ITER vacuum systems

R. J.H. Pearce, A. Antipenkov, J. L. Bersier, B. Boussier, S. Bryan, M. Dremel, S. Hughes, I. Sekachev, L. Worth, L. Baylor, W. Gardner, S. Meitner, P. Wikus, R. Laesser, S. Papastergiou

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

This paper takes the ITER fueling requirements and current knowledge of gas balance and exhaust from operating tokamaks to predict all likely gas inputs into the ITER Vacuum systems. Areas where gas dynamics modeling is relevant to the ITER design are highlighted. The design and operation of the ITER vacuum system gives an element of segregation of different gas flows and species. This paper analyses the time dependent gas segregation in the vacuum system resulting from different temperature dependences of cryogenic sorption and condensation processes of different gas species. As a specific example, the optimal transfer of ⁴¹Ar through the vacuum system is studied with respect to its decay and the resulting effects on the design of system components.

Original language	English
Pages (from-to)	1725-1730
Number of pages	6
Journal	Vacuum
Volume	86
Issue number	11
DOIs	https://doi.org/10.1016/j.vacuum.2012.03.048
State	Published - May 31 2012

Keywords

Argon-41
Cryogenic viscous flow compressor (CVC)
Cryopump
ITER
Vacuum system

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.vacuum.2012.03.048

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title = "Gas species, their evolution and segregation through the ITER vacuum systems",

abstract = "This paper takes the ITER fueling requirements and current knowledge of gas balance and exhaust from operating tokamaks to predict all likely gas inputs into the ITER Vacuum systems. Areas where gas dynamics modeling is relevant to the ITER design are highlighted. The design and operation of the ITER vacuum system gives an element of segregation of different gas flows and species. This paper analyses the time dependent gas segregation in the vacuum system resulting from different temperature dependences of cryogenic sorption and condensation processes of different gas species. As a specific example, the optimal transfer of 41Ar through the vacuum system is studied with respect to its decay and the resulting effects on the design of system components.",

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AU - Pearce, R. J.H.

AU - Antipenkov, A.

AU - Bersier, J. L.

AU - Boussier, B.

AU - Bryan, S.

AU - Dremel, M.

AU - Hughes, S.

AU - Sekachev, I.

AU - Worth, L.

AU - Baylor, L.

AU - Gardner, W.

AU - Meitner, S.

AU - Wikus, P.

AU - Laesser, R.

AU - Papastergiou, S.

PY - 2012/5/31

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AB - This paper takes the ITER fueling requirements and current knowledge of gas balance and exhaust from operating tokamaks to predict all likely gas inputs into the ITER Vacuum systems. Areas where gas dynamics modeling is relevant to the ITER design are highlighted. The design and operation of the ITER vacuum system gives an element of segregation of different gas flows and species. This paper analyses the time dependent gas segregation in the vacuum system resulting from different temperature dependences of cryogenic sorption and condensation processes of different gas species. As a specific example, the optimal transfer of 41Ar through the vacuum system is studied with respect to its decay and the resulting effects on the design of system components.

KW - Argon-41

KW - Cryogenic viscous flow compressor (CVC)

KW - Cryopump

KW - ITER

KW - Vacuum system

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Gas species, their evolution and segregation through the ITER vacuum systems

Abstract

Keywords

UN SDGs

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