Magnetic trap for confinement of hot plasma

A modification of closed magnetic trap Tornado-322 is proposed for relative ly hot (10 keV) or dense (10 21 m (-3)) plasma confinement. The helices of the trap consist of stainless steel tubes keeping the helical shape of cond uctors and number of copper wires inside the tube carrying helical electric currents. The wires are insulated from each other and connected in series. Current carrying wires are cooled down with a nitrogen vapour increasing t ime duration of magnetic field up to 0.1 s. Current carrying turns of the i nner helix are placed between turns of the outer helix mechanically stabili sing the helices and increasing confinement magnetic field up to 2.8 T.