Fusion Device data - TJ-II

Title of DeviceTJ-II
LocationMadrid (SPAIN)
A. Device concept and components
ConceptStellarator (Heliac)
Vacuum vessel: -- Plasma facing material: Stainless steeel AISI 316L (Boronised wall)
Divertor/limiter facing material Graphite limiters
Working Gas Hydrogen, helium
Boundary configuration: Limiter
Toroidal magnetic field (on axis), B (T): 1
Remarks Currently looking for island divertor configurations
B. Plasma geometry
Major radius, R(m): 1.5 [1]
Minor radius, a(m): 0.22 [1]
Plasma volume (m3): 1.1 [2]
Remarks: Strongly non-axisymmetric device. Bean shaped plasma cross section
C. Plasma parameters (maximum values)
Central ion temperature, Ti (keV): 0.1 [3]
Central electron temperature, Te (keV): 2 [4]
Line averaged plasma density, <n> (1020 m-3): 0.1 [5]
Central electron density, n (1020 m-3): -
Plasma current, I (MA): 0.001 [6]
Discharge pulse duration (s): 0.3 [7]
Plasma beta, <β> (%): 0.2
Stored energy, (MJ): 0.001 [7]
Energy confinement time, τE (s): 0.005 [7]
Remarks: -
D. Plasma heating and current drive (device values)
Ohmic heating, (MW): -
NBI heating, (MW): 2 (2 injectors, 1 MW each; 40 KV, 25 A) [8]
RF heating: -IC: (MW): -
RF heating: -EC: (MW): 0.6 (2 gyrotrons, 0.3 kW each; 2nd harmonic, X mode, 53.2 GHz) [9]
RF heating: -LH: (MW): -
E. Reactor relevant plasma performance parameters
Triple fusion product, ( 1020 keV s m-3): -
QDT factor (if available): -
F. Input information
Date of entry 4-Apr-2003
Data was entered by: Enrique Ascasiba