title: Application of a fast electrical pulse in gated multichannel plate camera.
abstract: An eight-frame gated microchannel plate (MCP) camera and a gating electrical pulse are described in this article. The gating electrical pulse is obtained by first generating a high voltage fast step pulse using avalanche transistors in Marx bank configuration, and then shaping it using avalanche diodes. The high voltage fast step pulse is about 200 ps in fall time and 4 kV in amplitude. The gating pulse wave form with width of 160 ps and amplitude of 2.5 kV is achieved. Each frame photocathode coated with gold on the MCP is part of a 12 Omega transmission line with open circuit end driven by the gating electrical pulse. The camera is tested by illuminating its photocathode with ultraviolet laser pulses, 266 nm in wavelength, which shows exposure time as short as 120 ps.
authors.affiliation: Institute of Optoelectronics, Shenzhen University, Guangdong 518060, China. ljy@szu.edu.cn
authors.forename: Jinyuan
authors.initials: J
authors.lastname: Liu
authors.forename: Lihong
authors.initials: L
authors.lastname: Niu
authors.forename: Wenda
authors.initials: W
authors.lastname: Peng
authors.forename: Fengxia
authors.initials: F
authors.lastname: Zhang
authors.forename: Li
authors.initials: L
authors.lastname: Li
authors.forename: Junfu
authors.initials: J
authors.lastname: Ou
authors.forename: Huatao
authors.initials: H
authors.lastname: Yuan
authors.forename: Qinlao
authors.initials: Q
authors.lastname: Yang
authors.forename: Hanben
authors.initials: H
authors.lastname: Niu
authors.forename: Jinghua
authors.initials: J
authors.lastname: Long
mesh_terms: D004574:Electromagnetic Fields; D004867:Equipment Design; D019544:Equipment Failure Analysis; D011856:Radiographic Image Enhancement / Q000295:instrumentation* / Q000379:methods; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000295:instrumentation* / Q000379:methods; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*