67 / 2020-03-25 20:54:34

100-GW linear transformer driver cavity with fiber-optic triggering

linear transformer driver,optic fiber triggering,field-distortion gas switch

全体主题 > 磁约束聚变/磁驱动聚变

This paper presents the design and performance of a 100-GW linear transformer driver (LTD) cavity based on fiber-optic triggering. The cavity consists of 23 5-GW main bricks and one triggering brick. Each main brick is comprised of two 100-nF, 100kV capacitors connected electrically in series with a ±100kV three-electrode, field-distortion gas switch. The triggering brick is comprised of two 50-nF, 100kV capacitors connected electrically in series with a ±100kV four-gap gas switch using fiber-optic triggering. Laser pulse transmitted in optic fiber triggers the triggering brick, generating fast risetime electrical pulses in azimuthal transmission lines to trigger circumferentially distributed main bricks so that they can discharge simultaneously. The 100-GW LTD cavity with optic fiber triggering method generate same amplitudes of output currents as conventional electrical triggering method does, which verifies the feasibility of combining light-triggering and electrical triggering methods for LTD cavity of MA currents. Moreover, adopting ~10-μJ laser pulse to trigger LTD cavity was achieved for the first time in the world. The paper gives the structure, photos, and the detail of the novel triggering method and the experimental results of the LTD cavity.