### Session G8: Electroweak Interactions I

8:30 AM–10:30 AM, Sunday, February 14, 2010
Room: Delaware B

Chair: W.M. Snow, Indiana University

Abstract ID: BAPS.2010.APR.G8.5

### Abstract: G8.00005 : Qweak Particle Tracking System

9:18 AM–9:30 AM

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#### Author:

Rakitha Beminiwattha
(Ohio University)

\mbox{$Q_{Weak}$} experiment at Jefferson lab will measure parity-violating elastic electron-proton scattering asymmetry at $Q^2 \simeq 0.03GeV/c^2$ to obtain the weak charge of the Proton, $Q_W$ to an accuracy of 4\%. An accurate value of $Q^2$ is required to measure the $Q_W$. A low beam-current counting- mode particle tracking system will measure the average $Q^2$ to an accuracy of $0.5$\%. A dedicated tracking software system will decode tracking detector signals to generate a set of electron hit data that will be used to derive individual electron tracks. This will enable us to calculate the scattering angle and interaction vertex, map the main detector response function, and correct the main detector signal for background contributions. A summary of the $Q_{Weak}$ tracking detectors and software system will be presented.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2010.APR.G8.5