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Publication Information
Title Two Wien Filter Spin Flipper
Abstract A new 4pi spin ma­nip­u­la­tor com­posed of two Wien fil­ters ori­ent­ed or­thog­o­nal­ly and sep­a­rat­ed by two solenoids has been in­stalled at the CEBAF/Jef­fer­son Lab pho­toin­jec­tor. The new spin ma­nip­u­la­tor is used to pre­cise­ly set the elec­tron spin di­rec­tion at an ex­per­i­ment in any di­rec­tion (in or out of plane of the ac­cel­er­a­tor) and pro­vides the means to re­verse, or flip, the he­lic­i­ty of the elec­tron beam on a daily basis. This re­ver­sal is being em­ployed to sup­press sys­tem­at­ic false asym­me­tries that can jeop­ar­dize chal­leng­ing par­i­ty vi­o­la­tion ex­per­i­ments that strive to mea­sure in­creas­ing­ly small physics asym­me­tries [*,**,***]. The spin ma­nip­u­la­tor is part of the ul­tra-high vac­u­um po­lar­ized elec­tron source beam line and has been suc­cess­ful­ly op­er­at­ed with 100keV and 130keV elec­tron beam at high cur­rent (>100 mi­croAmps). A unique fea­ture of the de­vice is that spin-flip­ping re­quires only the po­lar­i­ty
Author(s) Joe Grames , Philip Adderley, Jay Benesch, Jim Clark, John Hansknecht, Reza Kazimi, Danny Machie, Matthew Poelker, Marcy Stutzman, Riad Suleiman , Yuhong Zhang
Publication Date March 2011
Document Type Meeting, Proceedings
Primary Institution Thomas Jefferson National Accelerator Facility, Newport News
Affiliation Accelerator Ops, R&D / Ctr For Injectors&Sources / Ctr for Injectors&Sources
Funding Source
Proprietary? No
This publication conveys Technical Science Results
Document Numbers
JLAB Number: JLAB-ACC-11-1377 OSTI Number: 1020745
LANL Number: Other Number: DOE/OR/23177-1608
Associated with an experiment No
Associated with EIC No
Supported by Jefferson Lab LDRD Funding No
Meeting / Conference
Meeting Name PAC 2011
Meeting Date 3/28/2011
Document Subtype Poster
Proceedings
Title Proceedings of PAC 2011
Editor(s)
Publisher Jacow
Refereed No
Page Number 862-864
Year 2011
Attachments/Datasets/DOI Link
Document(s)
JLAB-ACC-11-1377.pdf (STI Document)
DOI Link
Dataset(s) (none)
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