Society of Physics Students Symposium

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Directional Dark Matter Detection, Simulation, and Reconstruction

Nuclear and Particle Physics

Lee, Albert

Current estimates from WMAP indicate that 24% of the universe exists as dark matter. Since dark matter particles do not interact through the strong or EM forces, WIMPs are good candidate constituents. The current upper limit on the WIMP cross section is too low for simple counting experiments to produce reliable data within a few years. However, a directional detector can increase sensitivity by measuring the relative velocities of cosmic particles as the earth moves through a supposedly anisotropic galactic WIMP cloud. I will explain the general physics behind the MIT DMTPC experiment. Then I will provide a sampling of the computational methods for simulating WIMP interactions and reconstructing interaction parameters from CCD images collected by the detector.