The Linac Coherent Light Source II photoinjector laser infrastructure
Hao Zhang, S. Gilevich, Alan Miahnahri, Shawn Alverson, A. Brachmann, Joseph Duris, Paris Franz, Alan Fry, Jack Hirschman, Kirk A. Larsen, Randy Lemons, Siqi Li, Brittany Lu, Agostino Marinelli, Mikael Martinez, Justin May, Erel Milshtein, Krishna Murari, Nicole Neveu, Joseph Robinson, John Schmerge, Linshan Sun, T. Vecchione, Chengcheng Xu, Feng Zhou, Sergio Carbajo
Abstract
Abstract This paper presents a comprehensive technical overview of the Linac Coherent Light Source II (LCLS-II) photoinjector laser system, its first and foremost component. The LCLS-II photoinjector laser system serves as an upgrade to the original LCLS at SLAC National Accelerator Laboratory. This advanced laser system generates high-quality laser beams for the LCLS-II, contributing to the instrument’s unprecedented brightness, precision and flexibility. Our discussion extends to the various subsystems that comprise the photoinjector, including the photocathode laser, laser heater and beam transport systems. Lastly, we draw attention to the ongoing research and development infrastructure underway to enhance the functionality and efficiency of the LCLS-II, and similar X-ray free-electron laser facilities around the world, thereby contributing to the future of laser technology and its applications.