Cryogenic viscous compressor development and modeling for the ITER vacuum system

Author

Baylor, L.R. ; Meitner, S.J. ; Barbier, C. ; Combs, S.K. ; Duckworth, R.C. ; Edgemon, T.G. ; Fehling, D.T. ; Rasmussen, D.A. ; Hechler, M.P. ; Kersevan, R. ; Dremel, M. ; Pearce, R.J.H. ; Boisson, J-C

Author_Institution

Oak Ridge Nat. Lab., Oak Ridge, TN, USA

fYear

2011

fDate

26-30 June 2011

Firstpage

1

Lastpage

4

Abstract

The ITER vacuum system requires a roughing pump system that can pump the exhaust gas from the torus cryopumps to the tritium exhaust processing plant. The gas will have a high tritium content and therefore conventional vacuum pumps are not suitable. A pump called a cryogenic viscous compressor (CVC) is being designed for the roughing system to pump from ~500 Pa to 10 Pa at flow rates of 200 Pa-m³/s. A unique feature of this pump is that it allows any helium in the gas to flow through the pump where it is sent to the detritiation system before exhausting to atmosphere. A small scale prototype of the CVC is being tested for heat transfer characteristics and compared to modeling results to ensure reliable operation of the full scale CVC.

Keywords

Tokamak devices; compressors; cryopumping; fusion reactor instrumentation; plasma toroidal confinement; ITER vacuum system; cryogenic viscous compressor; detritiation system; heat transfer; roughing pump system; torus cryopumps; Electron tubes; Lead; ITER; fuel cycle; vacuum;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering (SOFE), 2011 IEEE/NPSS 24th Symposium on

Conference_Location

Chicago, IL

ISSN

1078-8891

Print_ISBN

978-1-4577-0669-1

Electronic_ISBN

1078-8891

Type

conf

DOI

10.1109/SOFE.2011.6052261

Filename

6052261