Copumping of deuterium-helium and tritium-helium mixtures at TSTA

Author

Walthers, C. ; Sedgley, D. ; Batzer, T. ; Lang, D. ; Hathaway, D. ; Fukai, H. ; Okuno, K. ; Enoeda, N. ; Ide, T. ; Naruse, Y.

Author_Institution

Los Alamos Nat. Lab., NM, USA

fYear

1989

fDate

2-6 Oct 1989

Firstpage

959

Abstract

Future experimental fusion devices and power reactors will continuously pump large amounts of helium, and deuterium and tritium (D-T). D-T to helium ratios greater than 10:1 are projected. Cryopumps are the logical choice to pump gases in the 10³-m³/s range. A test program undertaken at Los Alamos that evaluated the capability of copumping the fusion exhaust gases on a liquid-helium cooled surface of activated carbon (coconut charcoal) is described. A compound cryopump installed in the VAC system of the Tritium Systems Test Assembly (TSTA) was used as the test article. In the test, copumping of helium and deuterium, and helium-3 and tritium was undertaken. Test results show that copumping is practical and that compound pumps may not be required for fusion applications

Keywords

deuterium; gas mixtures; helium; pumps; tritium; He-D mixture; He-T mixture; TSTA; Tritium Systems Test Assembly; activated C; coconut charcoal; copumping; cryopump; fusion exhaust gases; Argon; Assembly systems; Collaboration; Deuterium; Fuels; Fusion reactor design; Gases; Helium; Laboratories; System testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering, 1989. Proceedings., IEEE Thirteenth Symposium on

Conference_Location

Knoxville, TN

Type

conf

DOI

10.1109/FUSION.1989.102376

Filename

102376