The effect of angular divergence and space charge on transmission of an electron beam through a magnetic mirror

5th International Congress on Energy Fluxes and Radiation Effects 2016

Astrelin, V.T.^1,2 ; Kandaurov, I.V.^1 ; Kurkuchekov, V.V.^1,2 ; Sveshnikov, V.M.^2,3 ; Trunev, Yu A.^1

Budker Institute of Nuclear Physics SB RAS, Novosibirsk, Russia^1

Novosibirsk State University, Novosibirsk, Russia^2

Institute of Computational Mathematics and Mathematical Geophysics SB RAS, Novosibirsk, Russia^3

关键词: Angular divergence;    Beam currents;    Experimental values;    Limiting current;    Magnetic trap;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/830/1/012002/pdf
DOI  :  10.1088/1742-6596/830/1/012002

来源: IOP

【 摘 要 】

An experiment on generation and transmission of an intensive electron beam through a magnetic mirror has been carried out at the GOL-3 magnetic trap. An adapted theory and numerical modelling were used to find a maximal beam current for which no beam electrons are reflected. The effect of space charge and magnetic mirror of the reflection were taken into account. A comparison of the computed limiting current with experimental value allowed us to validate a hypothesis that the appearance of reflected electrons is responsible for electric breakdown in the electron gun.