Title :
The impurity transport model in IR-T1 tokamak
Author :
Ghoranneviss, Mahmood ; Salami, M.R. ; Masnavi, Majid ; Zamani, Mahdi
Author_Institution :
Plasma Phys. Res. Center of IAU, Tehran, Iran
Abstract :
Summary form only given. The transport for low-z impurities in IR-T1 Tokamak (R=45 cm, a=12.5 cm, B/sub t/=0.6-0.9 Tesla, I/sub p/=25-40 kA, /spl tau//sub d/=20-22 ms) has been studied theoretically and in conjunction with several experiments. As a result we have determined some ionization stage profiles of the main components of impurities (oxygen and carbon) with a single channel visible spectrometer. A one-dimensional impurity transport code has been set up, and some characteristics of the impurity transport in IR-T1 Tokamak have been analysed. The numerical analysis was done by a set of coupled continuity equations in cylindrical coordinates with ionization and recombination coefficients given by the Lotz semi-empirical formula and by the Kramer formula respectively.
Keywords :
plasma toroidal confinement; 0.6 to 0.9 T; 25 to 40 kA; IR-T1 Tokamak; Kramer formula; Lotz semi-empirical formula; coupled continuity equations; cylindrical coordinates; impurity transport model; ionization coefficients; ionization stage profiles; low-z impurities; numerical analysis; one-dimensional impurity transport code; recombination coefficients; single channel visible spectrometer; Argon; Impurities; Ionization; Plasma density; Plasma diagnostics; Plasma measurements; Plasma temperature; Plasma transport processes; Spectroscopy; Tokamaks;
Conference_Titel :
Plasma Science, 1996. IEEE Conference Record - Abstracts., 1996 IEEE International Conference on
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-3322-5
DOI :
10.1109/PLASMA.1996.551617
