Research Interests:

Professor Lindgren conducts experiments that provide critical test of QCD and quark models in the perturbative and non-perturbative regime of QCD. The experiments utilize electromagnetic probes such as electrons and real photons and are conducted at the Thomas Jefferson National Accelerator Facility (JLab), Laser Electron Gamma Source (LEGS) at Brookhaven, and the Stanford Linear Accelerator Center (SLAC). Recently, three fundamental experiments have been approved utilizing the new, high counting rate, large acceptance BigBite spectrometer in Hall A at JLab. Professor Lindgren will coordinate the first approved experiment E-01-014, a high precision measurement of the reaction H(e,e´p) pi0 near threshold to test Chiral Dynamics. This will provide a critical test of Chiral Perturbation Theory, an effective field theory in the low energy non-perturbative regime of QCD. Another experiment of interest is a study of short-range correlated wave functions in nuclei and a third is a measurement of the neutron charge density at high Q utilizing a polarized electron beam and polarized target. Our UVa group is responsible for integrating the multiwire proportional chambers into the detector plane and the integration of the BigBite spectrometer with the beam line. This instrumentation is necessary to carry out the three approved fundamental experiments. The high luminosity and counting rate characteristics of this device will also provide for a new generation of fundamental and novel experiments at JLab.

Current and Recent Courses:

PHYS 6050: How Things Work I (Lecturer) Fall

PHYS 6090: Galileo and Einstein (Lecturer) Fall