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THE TORE SUPRA TOKAMAK

1 - General presentation
2 - Cross-section of Tore Supra
3 - Main features of Tore Supra
4 - Extracting power (CIEL project)
5 - The CIMES project
6 - Major results

 

1 - General presentation

With a major radius of 2.25m (machine centre to plasma centre) and a minor radius of 0,70m,  Tore Supra is one of the largest tokamaks in the world. Its main feature is the superconducting toroidal magnets which enable generation of a permanent toroidal magnetic field. Tore Supra is also the only tokamak with plasma facing components actively cooled. Theses two features allow the study of plasma with long pulse duration.

 

2 - Cross-section of Tore Supra

1. 4°K mechanical structure of coils
2. Superconducting winding 1.8°K
3. 80°K thermal screen
4.  Cryostat, internal area at 220°C
5. Cryostat, external area at 20°C
6. Supporting pedestal for the cryostat and screens
7. First wall actively cooled to 220°C
8. Toroidal pumped limiter -
9.  Cryogenic supply, 1.8 K, 4 K and 80 K
10. Towards exchanger, water pressurised at 220°C, 40 bars
11.et 12 Poloidal field coils
13 Magnetic circuit
14 Heating antenna at ion cyclotronic frequency
15 Heating antenna at lower hybrid frequency

 

3 - Main features of Tore Supra

Major plasma radius :

2.25 m 

Minus plasma radius :

0.70 m  

Diameter :

11.5 m 

Height :

7.2 m 

Internal vacuum vessel diameter :

1.80 m 

Total weight of vacuum vessel and heat screens :

50 t 

Toroidal magnetic field at the plasma centre : 

4.5 T 

Maximum magnetic field on the conductor :

9.0 T 

Average diameter of a magnet coil :

2.60 m 

Dimension of NbTi superconductor :

2.8 x 5.6 mm▓ 

Weight of superconductor :

~ 45 t 

Total weight of magnet:

~ 160 t 

Total magnetic energy :

600 MJ 

Plasma current :

1.7 MA 

Potential duration of the discharge :

1000 s 

Weight of central solenoid :

56 t 

Weight of magnetic circuit :

830 t 

Cooling power at 80 K :

40 kW 

Cooling power at 4.5 K :

650 W 

Cooling power at 1.75 K :

300 W 

 

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