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The heavy ion beam diagnostic for the tokamak ISTTOK

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5 Author(s)
Cabral, J.A.C. ; Inst. Superior Tecnico, Centro de Fusao Nucl., Lisboa, Portugal ; Malaquias, A. ; Praxedes, A. ; van Toledo, W.
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In this paper we describe the heavy ion beam diagnostic for the tokamak ISTTOK, which has been designed to determine the temporal evolution of the plasma density, poloidal magnetic field and plasma potential profiles. This diagnostic makes use of a new type of high density caesium plasma source, a multiple cell detector and a fast data acquisition system. We describe the numerical code for trajectory and beam attenuation simulations, a method for the experimental determination of the poloidal field profile, the ion gun and the detection, control and data acquisition systems. Calibration tests and the first experimental results are presented

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Plasma Science, IEEE Transactions on  (Volume:22 ,  Issue: 4 )