Tokamak D-3He fusion reactor and ignition starting method thereof

Abstract

The invention discloses a Tokamak D-3He fusion reactor and an ignition starting method thereof. The invention provides a superconducting Tokamak D-3He fusion reactor based on a conventional conductor center solenoid and a starting ignition method independent of external auxiliary power, which aims to solve the problem that a low-ring-diameter-ratio Tokamak is difficult to arrange a full-size center solenoid for sensing and starting the Tokamak due to the limited intermediate space of annular plasma. The economy of theD-3He fusion reactor is improved. In consideration of small neutron irradiation power of D-3He fusion, an inner shielding layer is changed into a central solenoid coil of a conventional water-cooled magnet to drive plasma current to rapidly climb; D-T fusion ignition is realized only by ohmic power heating plasma; then alpha particle power self-heating plasma generated by D-T fusion is utilized to realize D-3He fusion ignition; the steady-state operation is maintained by using the plasma current which is close to complete bootstrap, and the size or profile of the plasma current is adjusted only by using a small amount of external non-inductive driving power.

Description

technical field [0001] The invention belongs to the field of magnetic confinement fusion energy, and relates to a tokamak magnetic confinement fusion and a start-up ignition method, in particular to an advanced fusion fuel D- 3 He fusion reactors may contain D- 3 D-D fusion reactor for He reaction and its starting ignition method. Background technique [0002] Fusion energy is considered to be the ultimate energy source for mankind because of its clean, safe, and unlimited resources. Based on the parameter levels achieved by the existing magnetic confinement fusion experimental devices and predicted by the calibration rate, the current D-T, D- 3 He and D-D fusion are promising fusion fuel schemes for ignition. All three fusions rely on D, and the D resource in water is abundant and can be used by humans for tens of billions of years. D- 3 The characteristic of He fusion is that only a part of the side reactions (D-D and D-T reactions) produce neutrons, the neutron power ...

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Problems solved by technology

[0005] Aiming at the problem of low ring-to-diameter ratio tokamak due to the limited space in the middle of the annular plasma, it is difficult to install a full-size central solenoid for inductively starting the tokamak, and the use of external auxiliary power to start the tokamak D- 3 He fusion reactor and heated plasma to reach D- 3 He fusion ignition temperature needs a lot of auxiliary power, the present invention provides a superconducting tokamak D- 3 He fusion reactor, considering D- 3 The neutron irradiation power of the He fusion reactor is very small, and the inner shielding layer of the Tokamak fusion reactor can be transformed into a water-cooled coil with a conventional conductor material, which is mainly used as a central solenoid during the start-up stage of the fusion reactor to induce a circular electric field. During the start-up phase of the tokamak, the plasma current climbs; during the plasma burning phase, it is mainly used as a shield to shield the neutrons generated by fusion to protect the superconducting magnet

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