Title :
TPX/TFTR neutral beam energy absorbers
Author :
Dahlgren, F. ; Wright, K. ; Kamperschroer, J. ; Grisham, L. ; Lontai, L. ; Peters, C. ; VonHalle, A.
Author_Institution :
Plasma Phys. Lab., Princeton Univ., NJ, USA
Abstract :
The present beam energy absorbing surfaces on the TFTR neutral beams such as ion dumps, calorimeters, beam defining apertures, and scrapers, are simple water cooled copper plates which were designed to absorb (via their thermal inertia) the incident beam power for two seconds with a five minute cool down interval between pulses. These components are not capable of absorbing the anticipated beam power loading for 1000 second TPX pulses and will have to be replaced with an actively cooled design. While several actively cooled energy absorbing designs were considered, the hypervapotron elements currently being used on the JET beamlines were chosen due to their lower cooling water demands and reliable performance on JET. The authors summarize the size, location (relative to the source) and the peak power requirements of the various beam components
Keywords :
beam handling equipment; fusion reactor design; fusion reactor ignition; fusion reactors; particle beam fusion accelerators; plasma beam injection heating; plasma heating; plasma toroidal confinement; 1000 s; 2 s; 5 min; Cu; JET beamlines; TFTR neutral beam energy absorbers; TPX neutral beam energy absorbers; actively cooled design; beam components; beam defining apertures; beam defining scrapers; beam energy absorbing surfaces; beam power loading; calorimeters; cool down interval; cooling water demands; fusion reactors; hypervapotron elements; ion dumps; peak power requirements; reliable performance; thermal inertia; water cooled Cu plates; Assembly; Cooling; Heat transfer; Ion beams; Particle beams; Plasmas; Safety; Springs; Thermal expansion; Water heating;
Conference_Titel :
Fusion Engineering, 1993., 15th IEEE/NPSS Symposium on
Conference_Location :
Hyannis, MA
Print_ISBN :
0-7803-1412-3
DOI :
10.1109/FUSION.1993.518371
