"In memoriam: Our colleague Court Bohn passed away in 2007. A scholarship is being established to honor his memory. Contributions can be made to Northern Illinois University, Foundation Gift Planning, 1425 W. Lincoln Highway, DeKalb, IL 60115. Checks should be made payable to the NIU Foundation in memory of Courtlandt Bohn."

Courtlandt L. (Court) Bohn
Professor of Physics
Northern Illinois University
DeKalb, IL 60115

Phone: (815) 753-6473 (NIU)
(630) 840-5634 (Fermilab)
Fax (815) 753-8565
Email: clbohn@fnal.gov

PhD, 1984, Theoretical Astrophysics, University of Chicago (galactic dynamics)
MS, 1977, Astrophysics, University of Chicago
MA, 1975, Physics, University of South Florida
BA, 1974, Physics, Astronomy, University of South Florida

NIU Courses taught:
PHYS 400, Analytical Mechanics II (Spring 2004)
PHYS 477, Theoretical Astrophysics (Spring 2006)
PHYS 485, Methods of Mathematical Physics II (Fall 2005)
PHYS 563, Statistical Physics (Spring 2002, 2003, 2005, 2007)
PHYS 571, Electromagnetic Theory II (Fall 2002-2004)
PHYS 651, General Relativity (Fall 2006)

The secret is in the setup -- a solid foundation. Then with good fundamentals, lots of conditioning, and practice, everything else follows.



"By faith we know that the universe was formed at God's command, so that what is seen was not made out of what was visible." -- Heb. 11:3

And it's much fun to try to figure out how!

Research Specialty: Accelerator Physics
  • Production and measurement of high-brightness electron beams
  • Nonlinear processes in beams, such as:
    • space-charge-driven dynamics in nonequilibrium beams
    • wakefields, beam breakup, and other instabilities
    • coherent synchrotron radiation in magnetic bending systems
The M33 Galaxy
M33 -- No, this is not a particle beam.

Biographical Sketch -- or -- A Nontraditional Career Path into Academia
Professor of Physics, 2002-present, Northern Illinois University, DeKalb, IL.
Physicist, 1999-2002, Fermi National Accelerator Laboratory, Batavia, IL.
Physicist, 1995-1999, Thomas Jefferson National Accelerator Facility, Newport News, VA.
Physicist, 1988-1995, Argonne National Laboratory, Argonne, IL.
U.S. Air Force officer, 1977-1988.

Research Experience
At Northern Illinois University: Leads the Beam Physics and Astrophysics Group. Researches violent relaxation and transient dynamics due to collective effects in charged-particle beams and galaxies. Research goals are two-fold: establish a connection between the physics of nonequilibrium beams and stellar systems to define laboratory experiments on galactic dynamics using beams, and develop new tools for fast, accurate computer codes for use in designing accelerators for high-current, high-intensity beams.

At Fermilab: Deputy Manager of the Fermilab/NICADD Photoinjector Laboratory. Studied physics associated with the production of high-brightness beams, particularly for linear-collider and light-source applications. Original contributions include theories of space-charge-induced phase mixing and of multibunch cumulative beam breakup including time-dependent transverse focusing.

At Jefferson Lab: Deputy Head of FEL Department. Led design and construction of the recirculating accelerator for the high-average-power free-electron laser, and commissioning of the completed machine. Developed an embryonic theory of beam self-interaction via transient coherent synchrotron radiation and planned experiments for its study with the completed accelerator.

At Argonne: Led and/or contributed to designs of superconducting accelerators of high-current ion beams. Developed theories of turbulent beams and of key accelerator instabilities. Contributed to design and testing of the first superconducting radiofrequency (RF) half-wave and spoke resonators. Developed and/or conducted experiments to measure RF surface resistance of high-temperature superconductors.

As Air Force officer: Directed nearly all Air Force laser and accelerator programs from the Air Force Secretariat in the Pentagon. Was Associate Professor of Physics at the Air Force Academy. Won the Air Force Research and Development Award and Frank J. Seiler Research Award for theoretical and experimental work on laser-solid interactions.