JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
@inproceedings{ji:napac2022-wepa02,
author = {F. Ji and C. Adolphsen and R. Coy and L. Ge and C.E. Mayes and J. Qiang and T.O. Raubenheimer and L. Xiao},
% author = {F. Ji and C. Adolphsen and R. Coy and L. Ge and C.E. Mayes and J. Qiang and others},
% author = {F. Ji and others},
title = {{Beam Dynamics Studies on a Low Emittance Injector for LCLS-II-HE}},
& booktitle = {Proc. NAPAC'22},
booktitle = {Proc. 5th Int. Particle Accel. Conf. (NAPAC'22)},
pages = {619--622},
eid = {WEPA02},
language = {english},
keywords = {emittance, cathode, gun, solenoid, cavity},
venue = {Albuquerque, NM, USA},
series = {International Particle Accelerator Conference},
number = {5},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {10},
year = {2022},
issn = {2673-7000},
isbn = {978-3-95450-232-5},
doi = {10.18429/JACoW-NAPAC2022-WEPA02},
url = {https://jacow.org/napac2022/papers/wepa02.pdf},
abstract = {{The SLAC High Energy upgrade of LCLS-II (LCLS-II-HE) will double the beam energy to 8 GeV, increasing the XFEL photon energy reach to about 13 keV. The energy reach can be extended to 20 keV if the beam emittance can be halved, which requires a higher gradient electron gun with a lower intrinsic emittance photocathode. To this end, the Low Emittance Injector (LEI) will be built that will run parallel to the existing LCLS-II Injector. The LEI design will be based on a state-of-the-art SRF gun with a 30 MV/m cathode gradient. The main goal is to produce transverse beam emittances of 0.1 mm-mrad for 100 pC bunch charges. This paper describes the beam dynamics studies on the design of the LEI including the simulations and multi-objective genetic algorithm (MOGA) optimizations. Performance with different injector layouts, cathode gradients, bunch charges and cathode mean transverse energies (MTEs) will be presented.}},
}