Compton polarimeter for Qweak Experiment at Jefferson Laboratory
Name
746928000-MIT.pdf
Description
Full printable version
Size
3.96 MB
Format
Adobe PDF
Checksum (MD5)
f81d049935591d40731fbfe21bed076f
Author(s)
Zou, David
Advisor(s)
Stanley Kowalski.
Date Issued
2011
Publisher
Massachusetts Institute of Technology
Abstract
The Qweak experiment at Jefferson Lab aims to make the first precision measurement of the proton's weak charge, QP = 1 - 4 sin 2 9w at Q2 = 0.026GeV 2 . Given the precision goals in the Qweak experiment, the electron beam polarization must be known to an absolute uncertainty of 1%. A new Compton polarimeter has been built and installed in Hall C in order to make this important measurement. Compton polarimetry has been chosen for its ability to deliver continuous on-line measuremnts at high currents necessary for Qweak (up to 180pzA). In this thesis, we collected and analyzed electron beam polarization data using the Qweak Compton polarimeter. Currently, data from the Compton can already be used to calculate preliminary values of experimental physics asymmetries and also the electron beam polarization. These preliminary results are promising indications that Qweak will be able to meet its stated precision goals.
Description
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2011.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 41-42).
Subjects
Physics.
Thomas Jefferson National Accelerator Facility (U.S.)
MIT Department
Massachusetts Institute of Technology. Department of Physics
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