Title :
Performance characteristics of the DIII-D advanced divertor cryopump
Author :
Campbell, G.L. ; Holtrop, K.L. ; Hyatt, A.W. ; Mahdavi, M.A. ; Schaffer, M.J. ; Scoville, J.T. ; Smith, J.P. ; Stambaugh, R.D.
Abstract :
A cryocondensation pump, cooled by forced flow of two-phase helium, has been installed for particle exhaust from the divertor region of the DIII-D tokamak. The Inconel pumping surface is of coaxial geometry, 25.4 mm in outer diameter and 11.65 m in length. Because of the tokamak environment, the pump is designed to perform under relatively high pulsed heat loads (300 W m-2). Results of measurements made on the pumping characteristics for D2, H 2, and Ar are discussed
Keywords :
Tokamak devices; cryopumping; fusion reactor design; fusion reactor operation; fusion reactors; 11.65 m; 25.4 mm; Ar; D2; DIII-D advanced divertor cryopump; DIII-D tokamak; FeCrNi; H2; He; Inconel pumping surface; coaxial geometry; cryocondensation pump; divertor region; forced flow; fusion reactor; high pulsed heat loads; particle exhaust; performance characteristics; pumping characteristics; two-phase He; Coaxial components; Geometry; Heat pumps; Helium; Hydrogen; Laboratories; Plasma stability; Plasma temperature; Springs; Tokamaks;
Conference_Titel :
Fusion Engineering, 1993., 15th IEEE/NPSS Symposium on
Conference_Location :
Hyannis, MA
Print_ISBN :
0-7803-1412-3
DOI :
10.1109/FUSION.1993.518502
