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Bottom view of the 25 million volt tandem electrostatic accelerator of the Holifield Heavy Ion Research Facility.

Physics researchers at ORNL seek to answer fascinating questions about our Universe:

Our research staff address these questions by developing experimental techniques and detector systems, performing experiments at national and international user facilities, and developing computational nuclear theory and astrophysics simulations that are ultimately used to guide experiments and evaluate experimental results.

In the area of Fundamental Symmetries, researchers use unique tools to investigate neutron decay and scattering to determine parameters of the Standard Model. At the Spallation Neutron Source, researchers are preparing for and will conduct an Electric Dipole experiment. Our staff also lead the Majorana Demonstrator project to develop the germanium detector technology necessary to measure whether the neutrino is its own anitparticle.

In the area of relativistic heavy ion physics, the ALICE experiment at the Large Hadron Collider at CERN near Geneva Switzerland and the PHENIX experiment at Relativistic Heavy Ion Collider at Brookhaven National Laboratory are two prominent experiments in which our staff also play leading roles.

We are leading experts in advanced detection techniques for a variety of nuclear physics problems, particularly in the design of advanced gamma-ray, charged, and neutral particle detectors.

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