Author/Authors :
Speth، نويسنده , , E. and Falter، نويسنده , , H.D. and Franzen، نويسنده , , P. and Heinemann، نويسنده , , B. and Bandyopadhyay، نويسنده , , M. and Fantz، نويسنده , , U. and Kraus، نويسنده , , W. and McNeely، نويسنده , , P. and Riedl، نويسنده , , R. and Tanga، نويسنده , , A. and Wilhelm، نويسنده , , R.، نويسنده ,
Abstract :
As an alternative for ITER NBI a RF source is being developed at IPP, Garching. This paper reports the first results with deuterium extracted from a restricted extraction area and accelerated to about 22 KeV. A current density of 150 A/m2 (calorimetric) of D− ions has been reached so far in a Cs-seeded discharge with an electron/ion ration of ≤1. The effect of the magnetic filter field on the yield and the electron suppression and possible limitations/improvements are discussed. The neutron production rate is about a factor 40 lower than expected from positive ions. Possible reasons for this are discussed.
Keywords :
neutrons , Deuterium , RF sources , Neutral beam injection , negative ions
