Gus Savard
Guy Savard,
Director of ATLAS

Welcome to ATLAS, the Argonne Tandem Linac 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, the fuel of stars. ATLAS can provide beams of essentially all stable isotopes from Hydrogen to Uranium as well as a variety of radioactive beams, low-mass beams through our in-flight production program and heavier neutron-rich isotopes from the CAlifornium Rare Isotope Breeder Upgrade (CARIBU). A one page brochure (pdf format) describing ATLAS is available here.

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

ATLAS mission statement and strategic plan guide the operation of the facility. The strategic plan defines the facilities main goals and is aligned with the US Nuclear Physics long-range plan priorities. The ATLAS strategic plan (updated at a Users Workshop held in the summer of 2014) is available here.

Users of ATLAS take advantage of the existing experimental equipment, such as, GRETINA, Gammasphere, the Argonne Gas Filled Analyzer (AGFA), the Canadian Penning Trap (CPT) mass spectrometer, the Fragment Mass Analyzer (FMA), the HELIcal Orbit Spectrometer (HELIOS), the MUlti-Sampling Ionization Chamber (MUSIC), the Enge Magnetic Spectrograph and the X-Array. Beam lines are also available for experiments where Users bring their own equipment. For any assistance or questions you may have regarding setting up or running experiments at ATLAS or CARIBU, please contact the ATLAS User Liaison, Dr. Daniel Santiago-Gonzalez, at

Beam time at ATLAS is granted on the basis of proposals which are reviewed by the ATLAS Program Advisory Committee (PAC) which meets roughly twice a year. For questions relating to the scheduling of experiments or submissions to the PAC, please contact Dr. Filip Kondev at

It is our hope that you, as a scientist interested in using our facility for research or as a casual visitor, will find on our website the information that you are interested in. We welcome your suggestions, comments and questions.

Guy Savard
Director of ATLAS

If you would like additional information about ATLAS, you can also contact Ms. Barbara Weller in the Physics Division of Argonne National Laboratory at (630) 252-4044 or via email at: