Removal of cold alpha particles from helical device for fusion

Shishkin, A.A.; Antufyev, A.Yu.; Motojima, O.; Sagara, A.

doi:10.1016/j.fusengdes.2006.07.039

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Dynamics and Confinement Time Of Trapped And Passing Cold-α ...1

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2007

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“…In the helical magnetic field the deviation of the helically trapped particles from the initial magnetic surface depends sensitively on the satellite harmonic spectrum of the B/B 0 modulation along the particle trajectory. In [12] use of the change of the B/B 0 modulation in a heliotron/torsatron type device is proposed to effect the removal of the cold α-particles.…”

Section: Dynamics and Confinement Time Of Trapped And Passing Cold-α ...mentioning

confidence: 99%

Controlling the cross-field flux of cold α-particles with resonant magnetic perturbations in a helical fusion plasma device

Shishkin

Sagara²,

Motojima³

et al. 2007

Nucl. Fusion

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A new scenario to control transport of 'cold' α-particles in a helical fusion device by changing poloidal field coil current during plasma discharge is proposed here. A way to enhance radial transport of α-particles in the intermediate energy range is considered which relies on specific features of helical magnetic field. To remove helically trapped, cold α-particles, a β-induced change in the B/B 0 modulation along the particle trajectory is employed. To remove passing particles resonant effects connected with the poloidal field coil currents are used.

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Section: Dynamics and Confinement Time Of Trapped And Passing Cold-α ...mentioning

confidence: 99%