| Title of Device | Wendelstein 7-AS |
|---|---|
| Organization | Max-Planck-Institut für Plasmaphysik |
| Location | Garching, Germany |
| A. Device concept and components | |
| Concept | stellarator |
| Vacuum vessel: -- Plasma facing material: | stainless steel |
| Divertor/limiter facing material | graphite |
| Working Gas | deuterium, hydrogen |
| Boundary configuration: | limiter (up to 1999), island divertor (since 2000) |
| Toroidal magnetic field (on axis), B (T): | 2.5 |
| Remarks | modular coils, low magnetic shear |
| B. Plasma geometry | |
| Major radius, R(m): | 2.0 |
| Minor radius, a(m): | < 0.18 (limiter), < 0.16 (divertor) |
| Plasma volume (m3): | < 1.3 (limiter), < 1.0 (divertor) |
| Remarks: | - |
| C. Plasma parameters (maximum values) | |
| Central ion temperature, Ti (keV): | 1.8 |
| Central electron temperature, Te (keV): | 6.8 |
| Line averaged plasma density, <n> (1020 m-3): | 4.0 |
| Central electron density, n (1020 m-3): | - |
| Plasma current, I (MA): | - |
| Discharge pulse duration (s): | 3.0 |
| Plasma beta, <β> (%): | 3.4 |
| Stored energy, (MJ): | 0.048 |
| Energy confinement time, τE (s): | 0.06 |
| Remarks: | - |
| D. Plasma heating and current drive (device values) | |
| Ohmic heating, (MW): | - |
| NBI heating, (MW): | 2.8 (absorbed power) |
| RF heating: -IC: (MW): | 1 (at antenna) |
| RF heating: -EC: (MW): | 2.4 (absorbed power) |
| RF heating: -LH: (MW): | - |
| E. Reactor relevant plasma performance parameters | |
| Triple fusion product, ( 1020 keV s m-3): | 0.05 |
| QDT factor (if available): | - |
| F. Input information | |
| Date of entry | 6-Feb-2003 |
| Data was entered by: | Rudolf Brakel |
Reference: