Technical data

Plasma parameters

Major plasma radius
 
0.89 m
Minor plasma radius
 
0.25 m
Aspect ratio
 
3.5
Plasma elongation
 
0.9 − 2.8
Plasma triangularity
 
-0.8 − +0.9
Maximal plasma current
 
1.2 MA
Max. discharge duration
 
2.6s in ohmic, 4s with ECCD
Core electron density
 
1−20×1019m-3
Core electron temperature
 
≤ 1 keV (ohmic)
≤ 15 keV (ECH)
Core ion temperature
 
≤ 1 keV
Main ion component
 
deuterium, hydrogen or helium
Main heavy impurity
 
carbon (C6+)

 

Tokamak parameters

Vacuum vessel:                                      height
 
1.54 m
width
 
0.56 m
vessel elongation
 
2.9
material
 
stainless steel (DIN 1.4429 /AISI 316LN)
internal surface
 
23 m2
wall thickness
 
10 mm
Graphite first wall:                             coverage
 
>90%
material
 
polycrystalline graphite (R6650MX2)
cleaning
 
glow discharge in helium between shots
number of graphite tiles
 
1692
Magnetic coils:                             total number    
Toroidal field                         number of coils   16 (1 power source)
maximal on axis magnetic field
 
1.54 T
OH coils                               number of coils
 
7 (2 power sources)
maximal current
 
27 kA
 Shaping coils                       number of coils   16 (16 independent power sources)
 maximal current   7 kA
In-vessel vertical fb coil       number of coils   2 (1 power source)
maximal current   2 kA
Plasma heating:                             Ohmic (OH)
 
up to 1 MW
Electron cyclotron (ECH)
 
4.5 MW (6×0.5 MW X2 + 3×0.5 MW X3)