Time-resolved photoemission with a momentum microscope at LCLS II
ORAL
Abstract
The Linac Coherent Light Source (LCLS), the world’s first X-ray free-electron laser (FEL) has been in operation since 2009 and is currently emerging from a major upgrade. The upgraded LCLS II, which will see first light in 2023, employs a superconducting accelerator to increase the X-ray pulse repetition rate from 120 Hz to 1MHz, enabling experiments in a wide range of fields that are currently impossible. One prime example is angle-resolved photoemission spectroscopy (ARPES), which has proven to be a critical tool in advancing our understanding of quantum materials, such as high Tc superconductors and topological states of matter but has been of limited use at FELs due to space-charge effects. The high rep-rate of LCLS II will overcome this limitation, enabling viable time-resolved ARPES, PEEM, and XPD experiments. In this talk I will discuss our plans to deploy a momentum microscope endstation for time-resolved photoemission at LCLS II.
*This work is a collaboration between SLAC/LCLS, Stanford University, DESY, JGU Mainz, ETH Zurich and Stony Brook University. Use of the Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, is supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract No. DE-AC02-76SF00515.
–
Presenters
-
Jake D Koralek
- SLAC National accelerator Laboratory