Fusion fuel pellet injection with a railgun

In TUMAN-3M tokamak ohmic hydrogen and deuterium discharges oscillations with ion cyclotron (IC) frequency were detected. Fast magnetic probes poloidal array in TUMAN-3M is capable of detecting several harmonics of IC frequency of main plasma isotope. Fuel pellet injection significantly reduces IC oscillations intensity, though after complete pellet evaporation returns to initial level. IC oscillations localization and excitation conditions are of certain interest. Based on drift-cyclotron instability excitation theory and numerical modeling of scenarios with ohmic LH-transition and pellet-injection plasma parameters (density gradient primarily) effect on IC oscillations excitation was studied.

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Analysis of an arc-driven railgun for fusion fuel pellet injection

IEEE Transactions on Magnetics ◽

10.1109/20.102898 ◽

1990 ◽

Vol 26 (6) ◽

pp. 3097-3101 ◽

Cited By ~ 5

Author(s):

B. Azzerboni ◽

E. Cardelli ◽

M. Raugi ◽

A. Tellini

Keyword(s):

Fuel Pellet ◽

Pellet Injection

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Fuel pellet injection into heavy-ion inertial fusion reactor

High Energy Density Physics ◽

10.1016/j.hedp.2019.100741 ◽

2020 ◽

Vol 35 ◽

pp. 100741

Author(s):

H. Nakamura ◽

T. Kubo ◽

T. Karino ◽

H. Kato ◽

S. Kawata

Keyword(s):

Fusion Reactor ◽

Heavy Ion ◽

Fuel Pellet ◽

Inertial Fusion ◽

Pellet Injection

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Effect of fuel pellet injection velocity on the energy parameters of a tokamak reactor

Nuclear Fusion ◽

10.1088/0029-5515/19/12/006 ◽

1979 ◽

Vol 19 (12) ◽

pp. 1619-1625 ◽

Cited By ~ 5

Author(s):

N.N. Vasil'ev ◽

V.Eh. Lukash ◽

A.V. Nedospasov

Keyword(s):

Fuel Pellet ◽

Injection Velocity ◽

Tokamak Reactor ◽

Energy Parameters ◽

Pellet Injection

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10-Hz beads pellet injection and laser engagement

Nuclear Fusion ◽

10.1088/1741-4326/ac3d69 ◽

2021 ◽

Author(s):

Yoshitaka Mori ◽

Katsuhiro Ishii ◽

Ryohei Hanayama ◽

Shinichiro Okihara ◽

Yoneyoshi Kitagawa ◽

...

Keyword(s):

Fusion Energy ◽

Free Fall ◽

Laser Pulses ◽

Intense Laser ◽

Injection System ◽

Fuel Pellet ◽

Inertial Fusion ◽

Inertial Fusion Energy ◽

Pellet Injection ◽

Γ Ray

Abstract Laser Inertial Fusion Energy reactor requires repetitive fuel pellet injection and laser engagement to fuse fusion fuel beyond a few Hz. We demonstrate 10 Hz free-fall bead pellets injection and laser engagement with γ-ray generation. Diameter of 1 mm deuterated polystyrene beads were engaged by counter illuminating ultra-intense laser pulses with intensity of 5 x1017 W/cm2 at 10 Hz. The spatial distribution of free-fall beads was 0.86 mm in horizontal, and 0.18 mm in vertical. The system operated beyond 5 minute, 3500 beads supply with achieved frequencies of 2.1 Hz for illumination on bead and 0.7 Hz for γ-ray generation, these frequencies increments three times in relation to the previous 1 Hz injection system. The operation duration was limited by pellet supply. This injection and engagement system can apply for Laser Inertial Fusion Energy research platform.

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