TJ-IU
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In the torsatron TJ-IU, a single coil generates the helicoidal magnetic field (l=1). The number of turns of the coil around the vacuum chamber is m=6. The vertical field is generated by a set of vertical field coils.
| Parameter | Value | Unit |
|---|---|---|
| Major radius, R0: | 0.60 | m |
| Mean plasma radius, a: | 0.10 | m |
| Minor coil radius, Rc: | 0.24 | m |
| Number of periods, m: | 6 | |
| Rotational transform at the axis, ι0: | 0.30 | |
| Magnetic shear: | almost zero | |
| Magnetic well depth: | 6.9 | % |
| Magnetic ripple at the axis: | 7.6 | % |
| Helical axis elongation: | 0.025 | m |
| Toroidal field, BT, at φ=30 degrees: | 0.5 | T |
| 2nd harmonic Electron Cyclotron Heating, 28 - 37.5 GHz: | 200 | kW |
The device was entirely built in Spain and taken into operation in 1994. In 1999, the device was sent to the University of Kiel, Germany, under a permanent loan agreement, and renamed TJ-K. Currently, TJ-K is located at the University of Stuttgart in Germany.
External links
References
- M.A. Pedrosa, M.A. Ochando, J.A. Jiménez, R. Balbín, J. Qin, and C. Hidalgo, Magnetic configuration effects on the TJ-IU torsatron plasma edge turbulence, Plasma Phys. Control. Fusion 38 (1996) 365
- E. Ascasibar, J. Qin, A.L. Fraguas, I. Pastor and J. Herranz, Measurement of magnetic surfaces on the TJ-I U torsatron, Nucl. Fusion 37, 6 (1997) 851
- C. Hidalgo, M.A. Pedrosa, B.Ph. van Milligen, et al, On the radial structure of fluctuations and turbulence induced flows, J. Plasma Fusion Res. SERIES 1 (1998) 96
- E. de la Luna and V. Krivenski, Kinetic effects on Electron Cyclotron Emission during Modulated ECRH in TJ-IU, J. Plasma Fusion Res. SERIES 1 (1998) 354
- F. Medina, L. Rodríguez-Rodrigo, M.A. Ochando and F. Castejón, Superthermal electrons in the TJ-IU torsatron, Plasma Phys. Control. Fusion 40 (1998) 1897