PT Journal
AU Gonzalez-Iglesias, D
   Aksoy, A
   Esperante, D
   Gimeno, B
   Latina, A
   Boronat, M
   Blanch, C
   Fuster-Martinez, N
   Martinez-Reviriego, P
   Martin-Luna, P
   Fuster, J
TI X-band RF photoinjector design for the CompactLight project
SO Nuclear Instruments & Methods in Physics Research A
JI Nucl. Instrum. Methods Phys. Res. A
PY 2021
BP 165709 - 10pp
VL 1014
DI 10.1016/j.nima.2021.165709
LA English
DE Photoinjector; X-band; Electron sources; Free electron laser; Beam generation
AB RF photoinjectors have been under development for several decades to provide the high-brightness electron beams required for X-ray Free Electron Lasers. This paper proposes a photoinjector design that meets the Horizon 2020 CompactLight design study requirements. It consists of a 5.6-cell, X-band (12 GHz) RF gun, an emittance-compensating solenoid and two X-band traveling-wave structures that accelerate the beam out of the space-charge-dominated regime. The RF gun is intended to operate with a cathode gradient of 200 MV/m, and the TW structures at a gradient of 65 MV/m. The shape of the gun cavity cells was optimized to reduce the peak electric surface field. An assessment of the gun RF breakdown likelihood is presented as is a multipacting analysis for the gun coaxial coupler. RF pulse heating on the gun inner surfaces is also evaluated and beam dynamics simulations of the 100 MeV photoinjector are summarized.
ER