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FACET-II Project

OVERVIEW

When the second phase of SLAC’s x-ray laser, the LCLS-II, starts, it will begin to use part of the tunnel occupied by FACET, and FACET, the world’s only multi-GeV facility for advanced accelerator research, will cease operation.

FACET-II is a proposed new test facility to provide DOE with the unique capability to develop advanced acceleration and coherent radiation techniques with high-energy electron and positron beams. FACET-II is an opportunity to build on the decades-long experience developed conducting advanced accelerator R&D at the FFTB and FACET and re-deploy HEP infrastructure in continued service of its mission.

FACET-II provides a major upgrade over current FACET capabilities and the breadth of the potential research program makes it truly unique. It will synergistically pursue accelerator science that is vital to the future of both advanced acceleration techniques for High Energy Physics, ultra-high brightness beams for Basic Energy Science, and novel radiation sources for a wide variety of applications. An international group of high energy physicists are interested in using it as a foundation for the world’s the first photon collider. Nuclear physicists have proposed using the unprecedentedly high intensity gamma beams to study the structure of nuclei and as a novel particle source for future colliders. No other test facility has attracted such broad interest across so many branches of the Office of Science.