STI Publications - View Publication Form #13340
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Publication Information
| Title | The Qweak Experimental Apparatus | ||||
| Abstract | The Jefferson Lab Qweak experiment determined the weak charge of the proton by measuring the parity- violating elastic scattering asymmetry of longitudinally polarized electrons from an unpolarized liquid hydrogen target at small momentum transfer. A custom apparatus was designed for this experiment to meet the technical challenges presented by the smallest and most precise ~ep asymmetry ever measured. Technical milestones were achieved at Jefferson Lab in target power, beam current, beam helicity reversal rate, polarimetry, detected rates, and control of helicity-correlated beam properties. The experiment employed 180 muA of 89% longitudinally polarized electrons whose helicity was reversed 960 times per second. The electrons were accelerated to 1.16 GeV and directed to a beamline with extensive instrumentation to measure helicity-correlated beam properties that can induce false asymmetries. M ller and Compton polarimetry were used to measure the electron beam polarization to | ||||
| Author(s) | Trent Allison, Mitchell Anderson, Darko Androic, Dave Armstrong, Arshak Asaturyan, Todd Averett, Bob Averill, Jan Balewski, Joe Beaufait, Rakitha Beminiwattha, Jay Benesch, Fatiha Benmokhtar, Jason Bessuille, James Birchall, E. Bonnell, David Bowman, Paul Brindza, D. Brown, Roger Carlini, Gordon Cates, Brandon Cavness, G. Clark, Juan Carlos Cornejo, Silviu Covrig Dusa, Mark Macrae Dalton, C. Davis, D. Dean, Wouter Deconinck, Juergen Diefenbach, K. Dow, Jim Dowd, Jim Dunne, Dipangkar Dutta, Wade Duvall, Jason Echols, Mostafa Elaasar, Willie Falk, Kevin Finelli, Mike Finn, Dave Gaskell, Michael Gericke, Joe Grames, Val Gray, Klaus Grimm, Fang Guo, John Hansknecht, D. Harrison, Eric Henderson, Joshua Hoskins, Ernest Ihloff, Kathleen Johnston, Donald Jones, Mark Kevin Jones, R. Jones, Emmanouil Kargiantoulakis, J. Kelsey, N. Khan, Paul King, Elie Korkmaz, Stanley Kowalski, Andrew Kubera, John Leacock, John Leckey, Anna Lee, Jeong Han Lee, Larry Lee, Yongguang Liang, Scott MacEwan, Dave Mack, Joshua Magee, Rob Mahurin, Juliette Mammei, Jeff Martin, Amber McCreary, M. McDonald, Martin McHugh, Paulo Medeiros, Dave Meekins, Jiawei Mei, Robert Michaels, Anna Micherdzinska, Arthur Mkrtchyan, Hamlet Mkrtchyan, Norman Morgan, John Musson, Katherine Mesick, Amrendra Narayan, Luwani Ndukum, Vladimir Nelyubin, Nuruzzaman Nuruzzaman, Willem Van Oers, Allena Opper, Shelley Page, Jie Pan, Kent Paschke, Sarah Phillips, Mark Pitt, Matthew Poelker, Jean-Francois Rajotte, Des Ramsay, W. Roberts, Julie Roche, Peyton Rose, Brad Sawatzky, Tomislav Seva, Mitra Hashemi Shabestari, Rupesh Silwal, Neven Simicevic, Greg Smith, Stanislaw Sobczynski, Patricia Solvignon-Slifer, Damon Spayde, Burnham Stokes, D. Storey, Adesh Subedi, Ramesh Subedi, Riad Suleiman, Vardan Tadevosyan, Al Tobias, Vladas Tvaskis, Erik Urban, Buddhini Waidyawansa, Peiqing Wang, Steven Wells, Stephen Wood, Siyuan Yang, Simon Zhamkochyan, Ryan Zielinski | ||||
| Publication Date | May 2015 | ||||
| Document Type | Journal Article | ||||
| Primary Institution | Thomas Jefferson National Accelerator Facility, Newport News | ||||
| Affiliation | Exp Nuclear Physics / Experimental Halls / Hall C | ||||
| Funding Source | |||||
| Proprietary? | No | ||||
| This publication conveys | Technical Science Results | ||||
| Document Numbers |
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| Associated with an experiment | No | ||||
| Associated with EIC | No | ||||
| Supported by Jefferson Lab LDRD Funding | No |
Journal Article
| Journal Name | Nuclear Instruments & Methods in Physics Research, Section A |
| Refereed | Yes |
| Volume | A |
| Issue | 781 |
| Page(s) | 105-133 |
Attachments/Datasets/DOI Link
| Document(s) |
1409.7100v22.pdf
(STI Document)
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| DOI Link | |
| Dataset(s) | (none) |
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