Title :
Design issues and fatigue lifetime of hypervapotron elements of the JET neutral beam injectors
Author :
Ciric, D. ; Akiba, M. ; Falter, H.D. ; Martin, D. ; Sato, K. ; Yokoyama, K.
Author_Institution :
JET Joint Undertaking, Abingdon, UK
Abstract :
Recent results on high heat flux testing of hypervapotron beam stopping elements are discussed. Two issues are being addressed: a) fatigue lifetime of components presently used at JET, and b) performance of the optimised hypervapotron element for the new Box Scraper. Results of the tests confirmed that a) beam stopping elements installed at JET can be used with confidence for several more years, and b) new hypervapotron element can sustain higher power load (peak power density of 13 MW/m2 and total power of 0.7 MW) at moderately increased water flow velocity
Keywords :
Tokamak devices; fatigue; fusion reactor design; plasma beam injection heating; 0.7 MW; Box Scraper; JET; fatigue lifetime; hypervapotron beam stopping elements; hypervapotron elements; neutral beam injectors; Cooling; Electron beams; Fatigue; Geometry; Particle beam injection; Particle beams; Prototypes; Stress; Temperature; Testing;
Conference_Titel :
Fusion Engineering, 1999. 18th Symposium on
Conference_Location :
Albuquerque, NM
Print_ISBN :
0-7803-5829-5
DOI :
10.1109/FUSION.1999.849867
