title: A compact high power pulsed modulator based on spiral Blumlein line.
abstract: A compact high power pulsed modulator based on spiral water Blumlein line, which consists of primary storage capacitors, a Tesla transformer, a spiral Blumlein line of water dielectric, and a field-emission diode, is described. The experimental results showed that the diode voltage is more than 500 kV, the electron beam current of diode is about 32 kA, and the pulse duration is about 180 ns. The distributions for electrical field in the spiral water Blumlein line were obtained by the simulations. In addition, the process of the charging a spiral Blumlein line was simulated through the PSPICE software to get the wave form of charging voltage of pulse forming line, the diode voltage, and diode current of modulator. The theoretical and simulated results are in agreement. This accelerator is very compact and works stably and reliably.
authors.affiliation: Department of Electrical Engineering, Tsinghua University, Beijing, 100084, China. ljle333@yahoo.com.cn
authors.forename: Jinliang
authors.initials: J
authors.lastname: Liu
authors.forename: Yi
authors.initials: Y
authors.lastname: Yin
authors.forename: Bin
authors.initials: B
authors.lastname: Ge
authors.forename: Xinbing
authors.initials: X
authors.lastname: Cheng
authors.forename: Jiahuai
authors.initials: J
authors.lastname: Feng
authors.forename: Jiande
authors.initials: J
authors.lastname: Zhang
authors.forename: Xinxin
authors.initials: X
authors.lastname: Wang
mesh_terms: D017076:Computer-Aided Design; D004581:Electronics / Q000295:instrumentation*; D004735:Energy Transfer; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008904:Miniaturization; D010315:Particle Accelerators / Q000295:instrumentation*; D015203:Reproducibility of Results; D012666:Semiconductors; D012680:Sensitivity and Specificity