CW photoinjectors operating at high accelerating gradients promise to revolutionize many areas of science and applications. They can establish the basis for a new generation of monochromatic X-ray free electron lasers, high brightness hadron beams, or a new generation of microchip production. In this letter we report on the record-performing superconducting RF electron gun with CsK2Sb photocathode. The gun is generating high charge electron bunches (up to 10 nC/bunch) and low transverse emittances, while operating for months with a single photocathode. This achievement opens a new era in generating high-power beams with a very high average brightness.
@article{arxiv.2003.05920,
title = {High brightness CW electron beams from Superconducting RF photoemission gun},
author = {I. Petrushina and V. N. Litvinenko and Y. Jing and J. Ma and I. Pinayev and K. Shih and G. Wang and Y. H. Wu and J. C. Brutus and Z. Altinbas and A. Di Lieto and P. Inacker and J. Jamilkowski and G. Mahler and M. Mapes and T. Miller and G. Narayan and M. Paniccia and T. Roser and F. Severino and J. Skaritka and L. Smart and K. Smith and V. Soria and Y. Than and J. Tuozzolo and E. Wang and B. Xiao and T. Xin and I. Ben-Zvi and C. Boulware and T. Grimm and K. Mihara and D. Kayran and T. Rao},
journal= {arXiv preprint arXiv:2003.05920},
year = {2020}
}