Design and characterization of a high-power induction module at megahertz repetition rate burst mode

Overview of Pulsed Power Research at CAEP

“…One of the innovative ideas to generate double pulses is by means of cable delay method [11], [12]. Another innovative idea to produce multipulses is the so-called controlled-pulse-adder [13], which runs multiple pulsed power systems at different controlled times and adds pulses together to drive the load. E. Development of Linear Induction Accelerator [14] The research of LIA began at IFP in the late 1970s with R and D of the key technologies and components such as switch and ferrite toroid.…”

Dispersion and Dielectric Effects on Reflection and Transmission of Electromagnetic Waves Propagating in Multiple Stages of Tape-Helix Blumlein Transmission Lines

“…(15) In (15), ξ (m−1) and α (m−1) respectively represent the reflection coefficient and transmission coefficient of the current density wave amplitude at z m−1 port. Actually, ξ (m−1) and α (m−1) are the S parameters such as S 11ni and S 21ni in the S-parameter matrix shown in (13). According to (11), the incident current wave and reflection wave in the 1st stage line can be obtained in turn as (16).…”

“…Transmission line is a device which can be employed to transport and propagate electromagnetic waves in different frequency bands, and it has important applications in power system [1,2], electromagnetic communication technology [3], signal measurement [4,5], pulse delay and transmission [6][7][8][9][10][11][12][13], and pulsed power technology [14][15][16]. Usually, the transmission line has intrinsic power capacity and working band.…”

“…Through combining the helical dispersion theory and the non-dispersive lumped circuit theory, references [31][32][33] calculated the parameters of tape-helix Blumlein lines, but the employed dispersion theory based on an approximation of "infinite-long line" can not analyze the wave reflection, transmission and the S-parameters at the ports of the helical transmission line with a finite length. In the MHz burst repetitive operations of accelerator and high-power pulse generator, multiple stages of helical transmission lines are used as pulse delay lines and pulse forming lines for output of a pulse string [10][11][12][13]. As the propagating waves travel through each joint port of the multiple helical lines, helical dispersion and different port dielectrics have strong effects on the propagation, transmission and reflection of electromagnetic waves.…”

Research of the Self-Restoration Speed [-5pt]of Low Remanence Toroid Cores

“…In many systems, the inductive devices generate several high voltage pulses with the toroid cores working in MHz repeating rates, such as the acceleration cells of an Induction Synchrotron [1], and a multi-pulse Linear Inductive Accelerator (LIA) [2] and the cells of an Inductive-add Kicker Modulator [3]. Therefore these toroid cores require a very fast reset before each pulse [4], otherwise they will saturate during a voltage pulse [5].…”