Title :
Experimental study on low-velocity-spread axis-encircling electron beam
Author :
Jeon, S.G. ; Baik, C.W. ; Kim, D.H. ; Jia, B. ; Park, G.S. ; Sato, N. ; Yokoo, K.
Author_Institution :
Sch. of Phys., Seoul Nat. Univ., South Korea
Abstract :
The axial velocity spread of the axis-encircling electron beam generated by 30 kV Pierce-type cusp gun is measured. A pin-hole and phosphor screen was adapted to measure the axial velocity spread and a capacitive probe was used to measure the velocity ratio. Using the measured value of the velocity ratio, the axial velocity spread can be calculated by measuring the angle of the beam arc that is sampled by a pin-hole. The experimental data were compared with the analytical and numerical estimations.
Keywords :
electron beams; electron guns; magnetic flux; velocity measurement; 30 kV; Pierce type cusp gun; axial velocity spread measurement; beam arc angle; capacitive probe; low velocity spread axis encircling electron beam; phosphor screen; pin hole; Cathodes; Diodes; Electron beams; Extraterrestrial measurements; Magnetic analysis; Magnetic flux; Magnetic flux density; Orbital calculations; Probes; Velocity measurement;
Conference_Titel :
Vacuum Electronics, 2003 4th IEEE International Conference on
Print_ISBN :
0-7803-7699-4
DOI :
10.1109/IVEC.2003.1286323
