Overview of CW electron guns and LCLS-II RF gun performance
Feng Zhou, C. Adolphsen, D.H. Dowell, Rong Xiang
Abstract
Various continuous-wave (CW) electron gun technologies are reviewed, including DC, superconducting radio frequency RF (SRF), hybrid DC-SRF and normal-conducting RF. Also, the SLAC Linac Coherent Light Source II (LCLS-II) normal-conducting RF gun and injector are described, and the performance to date, including the bunch emittance achieved and the dark current observed, is presented.
Topics & Concepts
Electron gunRadio frequencyThermal emittanceLinear particle acceleratorContinuous wavePhysicsElectronInjectorOpticsCathode rayOptoelectronicsBeam (structure)Electrical engineeringLaserNuclear physicsEngineeringThermodynamicsParticle Accelerators and Free-Electron LasersParticle accelerators and beam dynamicsGyrotron and Vacuum Electronics Research