W7-AS
The Wendelstein 7-AS (Advanced Stellarator) was located at the Max Planck Institut für Plasmaphysik (IPP) in Garching, Germany. The denomination 'advanced' refers to the use of modular (non-planar) coils. It has been operated from 1988 to July, 2002. [1] Its successor is the W7-X stellarator.
Main parameters
| Parameter | Value |
|---|---|
| Major radius, R0 | 2 m |
| Minor radius, a | ≤ 0.18 m |
| Periodicity | 5 |
| Nr. of coils | 45 |
| Plasma volume | 1 m3 |
| Toroidal field, BT | ≤ 3 T |
| Rotational transform | 0.25 ≤ ι(a)/2π ≤ 0.7 |
| Heating | 5.6 MW |
| Pulse length | 5 s |