publication . Article . 2011

Electron emission of cathode holder of vacuum diode of an intense electron-beam accelerator and its effect on the output voltage

Bao-Liang Qian; Hongbo Zhang; Xin-Bing Cheng; Jinliang Liu; Zhi-Qiang Hong;
Open Access
  • Published: 01 Apr 2011 Journal: Physical Review Special Topics - Accelerators and Beams, volume 14 (eissn: 1098-4402, Copyright policy)
  • Publisher: American Physical Society (APS)
Abstract
The vacuum diode which is used to generate relativistic electron beams is one of the most important parts of a pulsed-power modulator. In this paper, the electron emission of cathode holder of a vacuum diode and its effect on the output voltage is investigated by experiments on an intense electron-beam accelerator with 180 ns full width at half maximum and 200–500 kV output voltage. First, the field emission is analyzed and the electric field of the vacuum chamber is calculated. Then, the flatness of the output voltage is discussed before and after adding an insulation plate when a water load is used. It is found that the electron emission at the edges of the ca...
Subjects
arXiv: Physics::Instrumentation and DetectorsPhysics::Accelerator Physics
free text keywords: Physics and Astronomy (miscellaneous), Nuclear and High Energy Physics, Surfaces and Interfaces, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798, Optoelectronics, business.industry, business, Physics, Electron, Cathode, law.invention, law, Voltage, Electron beam accelerator, Atomic physics, Diode
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