Plasma wakefield diagnostics using probe electron beam and microchannel plates
- Kharkov Inst. of Physics and Technology (Ukraine); and others
The analytical and numerical investigations of trajectories of the probe beam electrons in the two dimensional wakefield, excited in plasma by a dense bunch of relativistic electrons with Gauss longitudinal and transverse distribution of density is carried out. On basis of calculations of probe beam deviations the diagnostic instruments is developed for parameters of experiments conducted in NSC KIPT. The diagnostic instruments consist of an electron gun forming the electron beam with energy 10KeV, current 10{mu}A and diameter 2mm which passes through the chamber of interaction and falls on collector of diameter 10mm. Collector (screen) is placed in front of the first plate of microchannel amplifier which consists of three microchannel plates (MCP) with sizes 20 - 30mm, The voltage 3kV was applied to the each plate. Total amplification of MCP amplifier is 10{sup 4} - 10{sup 5} in dependence on quantity of particles, falling on the first plate. As a result the deviations of probe beam by excited wakefield the electrons fall on first plate of amplifier and are registered by anode of amplifier, located behind the third plates. Calculated probe beam deviations and obtained amplification of MCP amplifier permit to find out and to investigate the electrical wakefields, excited by the sequence of relativistic bunches (number of particles in bunch is 2x10{sup 9}, energy is 14MeV) in plasma of density 10{sup 11} - 10{sup 13} cm{sup {minus}3}. The maximal value of the fields registered by such technique is not less 2kv/cm.
- OSTI ID:
- 441551
- Report Number(s):
- CONF-960723-; TRN: 96:006574-0024
- Resource Relation:
- Conference: 17. international symposium on discharges and electrical insulation in vacuum, Berkeley, CA (United States), 21-26 Jul 1996; Other Information: PBD: 1996; Related Information: Is Part Of XVIIth international symposium on discharges and electrical insulation in vacuum. Volume 1 and 2; PB: 1139 p.
- Country of Publication:
- United States
- Language:
- English
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