Magnetics Business & Technology - January/February 2024 - 13

FEATURE ARTICLE
ALS-U project overview
The project will endow ALS with revolutionary x-ray capabilities.
ALS has been a leader in soft x-ray science for more than two
decades. Recent accelerator physics breakthroughs now enable
the production of highly focused beams of soft x-ray light that are
at least 100 times brighter than those of the existing ALS. Applying
this technology will help scientists using the facility to better
understand and develop the new materials and chemical systems
needed to advance energy, economic and national security needs
in the 21st century, securing the United States' world scientific
leadership for decades to come, says LBNL.
high coherence will enable new classes of optical techniques that
will provide the groundbreaking sensitivity and precision needed to
detect the faintest traces of elements and subtle electrochemical
interactions on the scale of nanometers. The upgraded ALS is designed
to be unsurpassed by any currently envisioned technology
and will enable world leading soft x-ray science for years to come.
In August, the first magnet rafts of the accumulator ring were installed.
Watch the video on the ALS website.
ALS beamline scientist Wanli Yang instructs undergraduate mentee
Louis Roseguo from Cal Poly San Luis Obispo. (Credit: Roy Kaltschmidt)
The upgraded ALS will occupy the same facility as the current ALS,
replacing the existing electron storage ring and leveraging $500
million in existing ALS infrastructure and experimental systems.
The new ring will use powerful, compact magnets
arranged in a dense, circular array called a multibend
achromat (MBA) lattice. In combination with
other improvements to the accelerator complex,
the upgraded machine will produce bright, steady
beams of high-energy light to probe matter with unprecedented
detail.
At Sigmaphi, the capabilities include an array of magnetic technologies
including resistive magnets, permanent magnets, superconducting
magnets, beamlines, essentially any system able to
deviate particles. They range in size from 1kg to 100 tons.
For more info, see www.sigmaphi.fr, www.als.lbl.gov,
and www.medaustron.at.
Precision Instruments for Professionals
Comparison of the beam profiles of ALS (A) and ALS-U
(B). The highly focused beams of ALS-U will enable
new scientific advances.
The improved capabilities of the upgraded ALS will
enable transformative science that cannot be performed
on any existing or planned light source in
the world. This new science includes 3D imaging
with nanometer-scale spatial resolution and measurement
of spontaneous nanoscale processes
with time scales extending from minutes to nanoseconds-all
with sensitivity to chemical, electronic,
and magnetic properties. Moreover, the beam's
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January/February 2024 * Magnetics Business & Technology 13
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Magnetics Business & Technology - January/February 2024

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