scholarly journals Nonlinear Dynamics of High-Brightness Electron Beams and Beam-Plasma Interactions: Theories, Simulations, and Experiments

2008 ◽  
Author(s):  
C. L. Bohn
Keyword(s):  
Nonlinear Dynamics ◽  
Electron Beams ◽  
High Brightness ◽  
Plasma Interactions ◽  
Beam Plasma

scholarly journals The Beam Plasma Interactions Experiment: An Active Experiment Using Pulsed Electron Beams

2020 ◽  
Vol 7 ◽  
Author(s):  
Geoffrey D. Reeves ◽  
Gian Luca Delzanno ◽  
Philip A. Fernandes ◽  
Kateryna Yakymenko ◽  
Bruce E. Carlsten ◽  
...  
Keyword(s):  
Electron Beams ◽  
Plasma Interactions ◽  
Active Experiment ◽  
Beam Plasma

scholarly journals Single-shot reconstruction of core 4D phase space of high-brightness electron beams using metal grids

2018 ◽  
Vol 21 (10) ◽  
Author(s):  
D. Marx ◽  
J. Giner Navarro ◽  
D. Cesar ◽  
J. Maxson ◽  
B. Marchetti ◽  
...  
Keyword(s):  
Phase Space ◽  
Electron Beams ◽  
Single Shot ◽  
High Brightness

scholarly journals Long lifetime of bialkali photocathodes operating in high gradient superconducting radio frequency gun

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
E. Wang ◽  
V. N. Litvinenko ◽  
I. Pinayev ◽  
M. Gaowei ◽  
J. Skaritka ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Electron Beams ◽  
Spot Size ◽  
Laser Spot ◽  
Laser Spot Size ◽  
High Quantum Efficiency ◽  
High Brightness ◽  
High Charge ◽  
Superconducting Radio Frequency ◽  
Long Lifetime

AbstractHigh brightness, high charge electron beams are critical for a number of advanced accelerator applications. The initial emittance of the electron beam, which is determined by the mean transverse energy (MTE) and laser spot size, is one of the most important parameters determining the beam quality. The bialkali photocathodes illuminated by a visible laser have the advantages of high quantum efficiency (QE) and low MTE. Furthermore, Superconducting Radio Frequency (SRF) guns can operate in the continuous wave (CW) mode at high accelerating gradients, e.g. with significant reduction of the laser spot size at the photocathode. Combining the bialkali photocathode with the SRF gun enables generation of high charge, high brightness, and possibly high average current electron beams. However, integrating the high QE semiconductor photocathode into the SRF guns has been challenging. In this article, we report on the development of bialkali photocathodes for successful operation in the SRF gun with months-long lifetime while delivering CW beams with nano-coulomb charge per bunch. This achievement opens a new era for high charge, high brightness CW electron beams.

Theory of beam-plasma interactions

1968 ◽  
Vol 18 (5) ◽  
pp. 686-686
Author(s):  
A. Bers
Keyword(s):  
Plasma Interactions ◽  
Beam Plasma

scholarly journals Electron beam relaxation in inhomogeneous plasmas

2013 ◽  
Vol 31 (8) ◽  
pp. 1379-1385 ◽  
Author(s):  
A. Voshchepynets ◽  
V. Krasnoselskikh
Keyword(s):  
Electron Beam ◽  
Beam Energy ◽  
Electron Beams ◽  
Inhomogeneous Plasma ◽  
Density Fluctuations ◽  
Langmuir Waves ◽  
Wave Trapping ◽  
Beam Plasma ◽  
Beam Plasma Instability ◽  
Accelerated Particles

Abstract. In this work, we studied the effects of background plasma density fluctuations on the relaxation of electron beams. For the study, we assumed that the level of fluctuations was so high that the majority of Langmuir waves generated as a result of beam-plasma instability were trapped inside density depletions. The system can be considered as a good model for describing beam-plasma interactions in the solar wind. Here we show that due to the effect of wave trapping, beam relaxation slows significantly. As a result, the length of relaxation for the electron beam in such an inhomogeneous plasma is much longer than in a homogeneous plasma. Additionally, for sufficiently narrow beams, the process of relaxation is accompanied by transformation of significant part of the beam kinetic energy to energy of accelerated particles. They form the tail of the distribution and can carry up to 50% of the initial beam energy flux.

Sign in / Sign up

Export Citation Format

Share Document