IPAC'25 - the 16th International Particle Accelerator Conference

Manufacturing, assembly and construction progress of the ALS-U project to create a soft x-ray diffraction limited light source

MOPS058

2 Jun 2025, 16:00

2h

Exhibiton Hall A _Salmon (TWTC)

Poster Presentation MC2.A05 Synchrotron Radiation Facilities Monday Poster Session

Speaker

Thorsten Hellert (Lawrence Berkeley National Laboratory)

Description

The ALS-U project, aimed at enhancing the Advanced Light Source’s capabilities, is currently in the manufacturing, assembly, and construction phases. The construction of the accumulator, a crucial component, is nearing completion, with commissioning expected towards the end of this year. ALS-U promises to deliver diffraction-limited performance in the soft x-ray range by significantly reducing the horizontal emittance to approximately 70 pm rad. This achievement will result in a remarkable two orders of magnitude brightness increase for soft x-rays compared to the current ALS. The design incorporates a nine-bend achromat lattice, featuring reverse bending magnets and on-axis swap-out injection utilizing an accumulator ring. This optimized design is specifically tailored to generate intense beams of soft x-rays, which possess spectroscopic contrast, nanometer-scale resolution, and broad temporal sensitivity. This paper provides an overview of the project’s design features and offers an update on the progress made in manufacturing, assembly, and testing.

Funding Agency

This work was supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.