Title :
The heavy ion beam diagnostic for the tokamak ISTTOK
Author :
Cabral, J.A.C. ; Malaquias, A. ; Praxedes, A. ; van Toledo, W. ; Varandas, C.A.F.
Author_Institution :
Inst. Superior Tecnico, Centro de Fusao Nucl., Lisboa, Portugal
fDate :
8/1/1994 12:00:00 AM
Abstract :
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
Keywords :
caesium; calibration; data acquisition; digital simulation; ion beam applications; ion beam effects; ion sources; physics computing; plasma density; plasma diagnostic techniques; plasma simulation; plasma-beam interactions; ISTTOK; beam attenuation simulation; calibration tests; control system; data acquisition system; detection system; fast data acquisition system; heavy ion beam diagnostic; high density Cs plasma source; ion gun; multiple cell detector; numerical code; plasma density; plasma potential profiles; poloidal field profile; poloidal magnetic field; temporal evolution; tokamak; trajectory simulation; Attenuation; Data acquisition; Detectors; Ion beams; Magnetic fields; Plasma density; Plasma diagnostics; Plasma simulation; Plasma sources; Tokamaks;
Journal_Title :
Plasma Science, IEEE Transactions on
