University of Connecticut

Events Calendar

Physics Colloquium

Friday, April 21, 2017
4:00pm – 5:00pm

Storrs Campus
Physics Building, Room PB-38

Assistant Professor, Andrew Puckett UConn Physics Department

"Precision studies of nucleon structure at Jefferson Lab: The Super BigBite Spectrometer"

Protons and neutrons (or nucleons), the basic constituents of the atomic nucleus, are not elementary particles but are in fact bound states of light, elementary, spin-1/2 particles known as quarks, bound together by strong interactions described theoretically by Quantum Chromodynamics, one of the pillars of the Standard Model. Electron scattering has been used for over 60 years as a precision probe of the structure of nucleons and nuclei. In the last two decades, Jefferson Lab's Continuous Electron Beam Accelerator Facility (CEBAF), located in Newport News, VA has opened new frontiers in the precision study of nucleon structure due to its unrivaled luminosity, duty-cycle and polarization capabilities. JLab has recently completed an upgrade of CEBAF that nearly doubles its maximum electron beam energy to 12 GeV (11 GeV) for photon (electron) beam experiments in four experimental halls with unique and complementary capabilities. The unrivaled performance of CEBAF in terms of luminosity, duty cycle and polarization enables a comprehensive, precision three-dimensional "imaging" of the nucleon's quark structure in momentum and coordinate space. The physics program planned for the JLab 12 GeV Upgrade received the top recommendation of the recent 2015 long-range planning exercise of the US Department of Energy's Nuclear Science Advisory Committee: " With the imminent completion of the CEBAF 12-GeV Upgrade, its forefront program of using electrons to unfold the quark and gluon structure of hadrons and nuclei and to probe the Standard Model must be realized." In this colloquium, I will give a brief review of the history and theoretical formalism of electron scattering, followed by an overview of the flagship experiments planned for the upgraded CEBAF using the newly constructed Super BigBite Spectrometer in JLab's experimental Hall A.


Assistant Professor Andrew Puckett

Physics Department (primary)

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