TABLE A.1 National User Facilities


Beam Characteristics








Research Areas

Thomas Jefferson National Accelerator Facility (VA) Continuous Electron Beam Accelerator Facility (CEBAF)


1-6 GeV

Superconducting accelerator Polarized-electron beams Three simultaneous target stations

Structure of hadrons Quark-gluon degrees of freedom in nuclei Electromagnetic response of nuclei

Brookhaven National Laboratory (NY)

Relativistic Heavy Ion Collider (RHIC)

Heavy ions, protons

2 × (30-100) GeV/u 2 × (30-250) GeV

Colliding beams Polarized-proton beams Superconducting magnets

Quark-gluon plasma Hot compressed nucleonic matter Spin physics

Massachusetts Institute of Technology Bates Linear Accelerator Center


0.1-1 GeV

Polarized-electron beams Electron stretcher/storage ring Internal targets

Fundamental symmetries and interactions Structure of hadrons and nuclei Spin structure of nucleons and nuclei

Michigan State University National Superconducting Cyclotron Laboratory

Light to very heavy ions

10-200 MeV/u

Superconducting cyclotrons Superconducting magnets Radioactive beams

Nuclear structure with radioactive beams Liquid-gas phase transition Nuclear astrophysics

Indiana University Cyclotron Facility

Protons, light ions

100-500 MeV

Polarized, stored cooled beams Internal targets

Nucleon-nucleon/meson interactions Spin structure of nuclei Fundamental symmetries and chirality

Argonne National Laboratory (IL) Argonne Tandem Linac Accelerator System

Light to very heavy ions

0.3-20 MeV/u

Superconducting accelerator Selected radioactive beams

Nuclear structure at the limits Nuclear astrophysics with radioactive beams Ion trapping and fundamental symmetries

Oak Ridge National Laboratory (TN) Holifield Radioactive Ion Beam Facility

Light to heavy ions

0.1-12 MeV/u

Two-accelerator ISOL facility Radioactive beams

Nuclear structure with radioactive beams Nuclear astrophysics Decay studies far off stability

Lawrence Berkeley National Laboratory (CA) 88" Cyclotron

Protons, light to very heavy ions

1-55 MeV 1-35 MeV/u

ECR ion sources Rare-isotope beams

Nuclear structure at the limits Heavy-element research Atom trapping and fundamental symmetries

beams up to an energy of 1 GeV. The pulsed linac and the isochronous recirculator provide currents in excess of 80 µA at a duty-factor of up to 1 percent. The existing accelerator-recirculator system feeds the recently completed South Hall Ring, which will provide close to 100 percent-duty-factor beams. The 190 m-circumference ring will operate in the energy range up to 1 GeV at peak circulating currents of up to 80 mA, and extracted currents will be up to 50 µA.

Three superconducting cyclotrons have been built at the National Superconducting Cyclotron Laboratory of Michigan State University (MSU/NSCL). Two

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