Title :
A DC/pulse electron gun with an aperture grid
Author :
Sugimura, T. ; Ohsawa, S. ; Ikeda, M.
Author_Institution :
Accel. Lab., Tsukuba
Abstract :
A prototype thermionic-electron gun for a highly bright X-ray generator has been developed. Its extraction voltage and design current are 60 kV and 100 mA (DC), respectively. Based on the EGUN simulation, the first prototype electron gun is fabricated. The main specifications of the prototype electron gun were firstly measured by pulsed beams, and confirmed that the maximum beam current of 85.7 mA focused on the rotating anticathode with a spot size of 0.79 mm times 0.13 mm. In the DC beam test in progress, beam current is limited by the increase of temperature on the periphery of beam duct. With the treatment for the heating, extracted beam current has been growing to 24 mA without serious increase of temperature.
Keywords :
X-ray production; electron guns; synchrotron radiation; DC/pulse electron gun; X-ray generator; aperture grid; large-sized synchrotron radiation source; prototype thermionic-electron gun; Apertures; Current measurement; Electron beams; Prototypes; Pulse measurements; Rotation measurement; Size measurement; Temperature; Virtual prototyping; Voltage;
Conference_Titel :
Particle Accelerator Conference, 2007. PAC. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
978-1-4244-0916-7
DOI :
10.1109/PAC.2007.4440572
