Greg Keefer Email & Phone Number

7000 East Ave, L-186, Livermore Ca 94550, Usa

Associate Program Leader for Nuclear Threat Diagnostics for the Nuclear Counterterrorism and Counterproliferation and Nuclear Emergency Support Team Programs in Global Security at Lawrence Livermore National Lab.

Livermore, Ca

In my first year I have continued to finish my work with modeling the reactor antineutrino spectra. This work is funded by a DOE-NP ANS&T grant. I employ one postdoctoral researcher on this project.I have began work with global security. Specifically, non-proliferation experiments which are designed to use He-3 and Liquid Scintillators to determine neutron flux, multiplicity and effectively deconvolve the source terms from a multiplying, fissioning material. I further work on simulations of potential fissionable systems to understand neutron/gamma correlations and gamma ray signatures of SNM.

Livermore, Ca

Lead physicist on an above ground deployment of a 1 tone Gd doped water Cherenkov detector at the San Onofre Nuclear Generating Station (SONGS). I developed hardware, software and auxiliary systems as well as oversaw instillation, deployment and removal of the detector. The detector was the primary system to look for changes in the antineutrino flux from the reactor core during a scheduled refueling outage. There were BF3 tubes, liquid scintillators, thermometers, pressure sensors and many other secondary systems which monitored neutron and gamma ray backgrounds and environmental conditions. I was also a member of the multinational Double Chooz theta 13 reactor antineutrino experiment. I was the lead US representative responsible for reactor core simulations of the N4 Chooz reactor cores. We used thermal power measurements to simulate and then provide the time dependent isotopic fissile components in the core. We benchmarked and used two independent core simulations. One was DRAGON and the other MURE, using FORTRAN and C/C++ respectively. In my final year as a Postdoc I successfully funded a DOE NP project to perform ab initio calculations of the reactor antineutrino spectra from theory. I began working with a simulation project designed to understand gamma ray signatures of threat items for non proliferation. Furthermore, I began work on a detector project aimed at measuring the neutron flux and multiplicity from fissile material using He3 tubes and liquid scintillators.

I am in the last year of my dissertation research at the University of Alabama. My field of study is experimental neutrino physics. I am a senior graduate student on the KamLAND experiment.

Master'S Degree, National Security Policy Studies

Ph.D., Experimental Nuclear And Particle Physics

M.Sc., Experimental Neutrino Physics

B.S.B.A., Finance