The 1.1 MW TRIGA (Training, Research, Isotope, General Atomics) Mark-F nuclear research reactor is capable of delivering a mixed linear energy transfer field of fission neutrons and gamma rays to a number of experimental targets. Large exposure rooms allow the flexibility of variable shielding configurations to customize the neutron-gamma ratio. The ratio ranges from a nearly pure neutron field to a nearly pure gamma-ray field. In addition, the movable core, combined with neutron filtering material, permits shifting of the neutron spectrum energies within the exposure rooms. Other experimental facilities include a pneumatic transfer system, removable beam port, in-core experiment tube, and grid plate sample holders. Steady state operation of the reactor delivers a peak in-core neutron flux of approximately 1013 n/cm2/s. Pulsing operation of the reactor is capable of simulating nuclear weapon detonations.