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Research Interest and Capabilities

Dr. Terrence Lee Reese
Department of Physics Southern University and A&M College

            My research experience and interests are in the following areas: Simulation of fluids and simulation of quantum particles in fluids and also a project involving the design of a proto-type accelerator at Fermi National Laboratory.

Simulations of Quantum Particles in Dense Fluids: A quantum particle (electron, positron or Positronium atom) in a fluid has a thermal wavelength much greater than separation between the molecules of the fluid. The quantum particle, QP, thus interacts with many different fluid molecules simultaneously. This interaction results in novel processes that are solely the result of quantum features of the system and do not occur in purely classical systems. Some of the physical systems in which a QP in a fluid are important are Positron Emission Tomography used in medical imaging scanners and the mobility of conducting electrons in fluids and gels. In the Path Integral group of which I am a part we use Path Integral Monte Carlo, PIMC, to simulate a QP in a dense fluid near or above the critical temperature. The PIMC technique allows the equilibrium values of a quantum system to be computed using standard classical methods.

Publications in Last Three Years:

  1. Self-Trapping at the Liquid Vapor Critical Point; Bruce N. Miller and Terrence Reese, Modern Physics Letters B; 20 (2006) pg. 169-177.
  2. Self-Trapping at the Liquid Vapor Critical Point: A Path Integral Study; Bruce N. Miller and Terrence L. Reese, Physical Review E; 78 (2008) pg. 061123-1.

Equipment:
All equipment used in this research is off campus and are 8 CDEC work stations. These workstations are multiprocessor machines where each processor has a speed of 16Ghz and has 2 Gbytes of RAM each.

High Intensity Neutrino Source Accelerator Proto-type:
The discovery of neutrino masses has resulted in a sea change in the way that these particles are viewed and has become one of the first indications of physics beyond the Standard Model (SM). These masses would be very small, much less than one-millionth the mass of an electron and although experiments have proven its existence there is still much to be done. The actual masses of the neutrinos are unknown as well as the mixing parameters that determine the rate of oscillation from one state to another. Other intriguing possibilities include CP violation in neutrino interactions and the possible existence of a fourth neutrino. A group of experiments coming on line in the next few years will hopefully shed light on some of these important issues. Most of these experiments will require the creation of high intensity beams of neutrinos of only a single flavor.
A new generation of accelerators will be required to create these beams as well as improved detectors to carry out the measurements on them. The type of detector used in an experiment is determined by the flavor of neutrino that is being investigated and how it is created. Electron-neutrinos are mostly created in the Sun and nuclear reactors whereas muon-neutrinos are created in cosmic ray decays in the atmosphere and in specific types of accelerators. Proton accelerators are used to create mono-energetic beams of muon-neutrinos. In a proton-driver accelerator protons are accelerated to high energy using electric fields and collided into a stationary metal target. The interaction between the quarks in the protons in the beam and the quarks in the nuclei of the atoms of the target results in the creation of muon-neutrinos traveling in the same direction with specific energies. A detector near the creation point counts the number of neutrinos and a similar detector much further away along the direction of travel of the beam counts them again. Deficits in the number of muon-neutrinos counted at the far detector are interpreted as the transformation of some of them into electron-neutrinos.
Fermilab’s proposed 2MW Proton driver will be used to investigate the neutrino mass spectrum, oscillation characteristics and neutrino-matter interactions. It will also be involved in the search for CP violations in neutrino interactions.  The favored scheme for this device is an 8Gev Superconducting RF Proton Linear accelerator. The three major reasons supporting this system is the large power it will supply for accelerating protons, its ability to create a high intensity beam of neutrinos and finally its ability to serve as a test-bed for examining engineering problems for the future International Linear Collider.
Before this machine can be built, however, prototype versions of its components must be built and tested and then integrated together to see if they are capable of reaching the desired specifications. This is the goal of the HINS R&D development team. The ultimate goal of this project would be to set up a scale model of the proposed Proton driver linac that would be used as the basis for the full size version and also a test-bed for possible technologies that would be used in the ILC.

Funding for Last Three Years:

  1. June-August 2009: Lead student team in 2 projects at Fermi National Laboratory, Chicago, IL.
  2. June-August 2007: Lead student team in 2 projects at Fermi National Laboratory, Chicago, IL.
  3. June-August 2006: Lead student team in 2 projects at Fermi National Laboratory, Chicago, IL

Selected Publications: Click Here

 

 
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