Dr. Koeth received a B.S. in physics from Rutgers University in 1997, and earned a Ph.D. in physics from Rutgers University in 2009. He joined the University of Maryland in 2009 as a Faculty Research Associate.

His current research interests include intense electron and ion beam accelerators and associated beam optics. He presently performs research on the University of Maryland's Electron Ring (UMER) investigating both longitudinal and transverse beam characteristics of space charge dominated beams. Dr. Koeth's research has included cyclotrons, cathodes, pulsed power, high power RF, normal and superconducting RF structures as well as the radiological sciences.

Dr. Koeth's Ph.D. research, the first observation of a Transverse to Longitudinal Emittance Exchange, was performed at Fermi National Accelerator Laboratory's A0 Photoinjector under the supervision of Dr. Helen Edwards.

In his spare time, starting while still an undegraduate, Tim Koeth built a working 1.2 MeV Cyclotron . Presently, his cyclotron is being used for physics instruction in Rutgers Modern (Senior) Physics Lab course. Tim Koeth's cyclotron was featured in the November 2004 issue of Physics Today .