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Argonne Tandem Linear Accelerator System

Argonne Tandem Linear Accelerator System

The prime national facility for nuclear structure research. The Argonne Tandem Linear Accelerator System (ATLAS) is the world’s first superconducting linear accelerator for heavy ions at energies in the vicinity of the Coulomb barrier.

This is the energy domain best suited to study the properties of the nucleus, the core of matter and the fuel of stars. ATLAS can provide beams of essentially all stable isotopes from protons to uranium, and a variety of light radioactive beams through our in-flight production program and heavier neutron-rich isotopes from CARIBU.

ATLAS is a U.S. Department of Energy User Facility that hosts roughly 200 to 300 users each year. It is supported by the Office of Nuclear Physics of the Department of EnergyATLAS users come from U.S. universities and national laboratories as well as from foreign institutions. The facility is also accessible to industrial users. 


ATLAS General Inquiries (users and visitors)

ATLAS Experiment Inquiries

ATLAS Schedule Inquiries
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ATLAS Schedule & Calendar

The ATLAS calendar shows events relevant to our user community including scheduled experiments, major maintenance operations and shutdown periods.

View ATLAS Calendar

Submit a critical beam change request

A critical change is one that requires approval by ATLAS safety committees. Click button below to start request process. You will be redirected to an online form. Your request won’t be processed until you click Submit” button in the form.


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