Generation of High Peak Power Hard X-Rays at LCLS-II with Double Bunch Self-seeding

Conference · Fri May 24 00:00:00 EDT 2019

OSTI ID:1560969

Halavanau, A.; Decker, F. -J.; Ding, Y.; Emma, C.; Huang, Z.; Krzywinski, J.; Lutman, A. A.; Marcus, G.; Pellegrini, C.; Zhu, D.

We propose to use existing LCLS copper S-band linac double bunch infrastructure to significantly improve LCLS-II hard X-ray performance. In our setup, we use the first bunch to generate a strong seeding X-ray signal, and the second bunch, initially traveling off-axis, to interact with the seed in the amplifier undulator and generate a near TW, 15 fs duration X-ray pulse in the 4 to 8 keV photon energy range. We investigate, via numerical simulations, the required transverse beam dynamics and the four crystals X-ray monochromator to be added to the existing LCLS-II beamline and discuss the final properties of the hard X-ray pulses and their potential application in high intensity, high-field physics experiments, including QED above the Schwinger critical field.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 1560969
• Report Number(s): TUPRB088
• Resource Relation: Conference: International Particle Accelerator Conference (10th) Melbourne, Australia 19-24 May 2019
• Country of Publication: United States
• Language: English