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Princeton, NJ., U.S.A. 



PRINCETON BETA EXPERIMENT (PBX) 



Princeton Plasma Physics Laboratory (PPPL) 



U.S. Dept. of Energy 



"Big Science" Descriptor ; Magnetic fusion 



Description of Facility/Instrument : This was known previously as the 

 Pololdal Dlvertor Experiment (PDX). The PDX was constructed 

 as a mainline tokamak device In which impurity ions were to 

 be removed by magnetically diverting such ions Into a collection 

 chamber (separated from the plasma). Other objectives were 

 to investigate impurity control by experimenting with different 

 startup modes and to evaluate the stability of a D-shaped plasma. 



After successfully completing its mission, the device was 

 modified to Investigate high beta operation in highly shaped 

 plasmas. Current experiments Involve using a "bean"-shaped 

 plasma. 



Date of Construction : PDX-1979, PBX-1984 



Construction Cost : 198A $$ : $50-$70 million 



Present International Cooperation 



Natlonallty(s) of Ownership : U.S. 

 NatiomalityCs) of Operational Funding : U.S. 

 Natlonality(s) of Management Staff : U.S. 

 Nationality(s) of Researchers: U.S. 



