G2p

The Experiments

E08-027 will measure the proton spin structure function g2p in Jefferson Lab's Hall A.

• Spokesmen: A. Camsonne, J.P. Chen, D. Crabb and K. Slifer (contact).
• Full details of the physics goals are provided in the proposal
• The g2p website.

E08-007 will measure the proton spin structure function ratio GE/GM

• Spokesmen: R. Gilman, D. Higinbotham, G. Ron (contact), J. Arrington, D. Day, A. Sarty.
• The GEP website.

Runplan and Schedule

• Today's runplan
• The shift schedule
• The longterm g2p production plan
• The experiment schedule: (pdf)
• The accelerator schedule: (pdf)

Shift Worker Information

• Shift Worker Instructions
• Expert Shift Worker Instructions

DAQ

• The g2p DAQ Guide

Beamline

• g2p BCM calibration
• g2p BPM calibration
• g2p Beampackage
• g2p Helicity Decoder

Analysis

• The g2p Analysis Guide

• Scanned Run Sheets

• Scanned Back Room Run Sheets

• Scanned Shift Checklists

• Run Summaries

• Summary of runs for different energy settings

• g2p mysql

• g2p task list

• g2p Analyzer DB

• Beam polarization measured by Moller

• Data quality check

Polarized Target

• Solid Polarized Target

Spectrometer Optics

• g2p optics page

Survey Results

• g2p survey page

Weekly Meetings

• Analysis Meetings are held every Weds at 10:30. (minutes) (Agendas)
• Past Target Meeting (minutes)
• Beam Transport Meeting (minutes)
• Weekly Hall A meeting Run Coordinator (Reports)

Collaboration Meetings

• 14th Nov, 2014
• May 18, 2012 (End of Run)
• January 17, 2012 (JLab Safety/Readiness Review)
• August 30, 2011 (Hall A Review)
• May 6, 2011 (Readiness Review) (Final Report)
• April 18, 2011 (minutes)
• Feb. 4, 2011
• Sep. 30, 2010 (minutes)

Safety Documentation

• g2p Safety documentation

Talks and Presentations

• 2014 Hall A Winter Collaboration Meeting, P. Zhu (Talk) (Abstract)
• 2014 APS/JPS Joint Meeting, T. Badman (Talk) (Abstract)
• 2014 SPIN2014, M. Cummings (A Measurement of g2p at Low Q²)
• 2014 The Sixth Workshop on Hadron Physics in China and Opportunities in US, C. Gu (The g2 Spin Structure Function)
• 2014 Gordon Research Conference, T. Badman (poster abstract)
• 2014 DIS2014, M. Cummings (The g2 Spin Structure Function)
• 2013 Hall A & C Data Analysis Workshop, C. Gu (Spectrometer Optics Calibration for g2p Experiment)
• 2013 Hall A Winter Collaboration Meeting, J. Liu (g2p)
• 2013 Fall 2013 DNP Meeting, R. Zielinski (Talk) (Abstract)
• 2013 The Fifth Workshop on Hadron Physics in China and Opportunities in US, Jie Liu (g2p)
• 2013 JLab Users Group Meeting, M. Cummings (poster)
• 2013 Hall A Summer Collaboration Meeting, M. Huang (g2p)
• 2013 APS April Meeting, M. Cummings (Polarized Proton Target for the g2p Experiment)
• 2013 APS April Meeting, C. Gu (Spectrometer Optics Calibration for g2p Experiment)
• 2013 APS April Meeting, M. Huang (A Measurement of Proton g2 and the Longitudinal-transverse Spin Polarizability)
• 2013 Group on Hadronic Physics Workshop, Toby Badman (The g2p Experiment)
• 2013 Few Slide overview, K. Slifer (ppt)
• 2012 Hall A & C Data Analysis Workshop, M. Huang (g2p HRS Optics with Septum)
• 2012 Hall A & C Data Analysis Workshop, Jixie Zhang (HRSMC, The Geant4 Simulation of HRS for the G2P and GEP Experiments)
• 2012 Hall A Winter Collaboration Meeting, M. Cummings (Update on g2p)
• 2012 Gordon Conference (Poster section), Jixie Zhang (The Geant4 Simulation of G2P|GEP Experiments)
• 2012 Chiral Dynamics Workshop, P.Zhu (instrumentation for the g2p experiment)
• 2012 Chiral Dynamics Workshop, C. Gu (pdf)
• 2012 Gordon Research Conference, T. Badman (poster abstract)
• 2012 Gordon Research Conference, M. Cummings and R. Zielinski (poster abstract)
• 2012 Summary Slides for Hall A, K. Slifer (ppt)
• 2012 Hall A collaboration meeting, Jixie Zhang (G2P status update)
• 2012 Hall A collaboration meeting, R. Zielinski (DAQ)
• 2012 Hall A collaboration meeting, P.Zhu (beamline)
• 2012 JLab User Group Meeting, K. Slifer (ppt)
• 2012 JLab Graduate Student Seminar, K. Slifer (pdf)
• 2011 Al Gavalya's overview of Hall A
• 2011 NSTAR, K. Slifer (pdf)
• 2011 Hall A Workshop, K. Slifer (ppt)
• 2010 Hall A Collaboration Meeting, K. Allada ([1])
• 2010 One Slide Summary (ppt)
• 2009 E08-027/E08-007 Presentation to R. McKeown (pdf)

Relevent Theses

• E97110 List
• E94010 List
• J. Maxwell: SANE

Relevent Publications

• New Insights into the spin structure of the nucleon. Phys.Rev. D87 (2013) 054032
• Axial anomaly and the δLT puzzle. Phys. Rev. D 85, 016012 (2012)
• M. J. Alguard, et al. Deep Inelastic Scattering of Polarized Electrons by Polarized Protons PRL
• M. J. Alguard, et al. Elastic Scattering of Polarized Electrons by Polarized Protons PRL
• Donnelly and Raskin, Considerations of Polarization in Inclusive Electron Scattering from Nuclei pdf
• Proceedings of the 4th International Workshop on Polarized Target Materials and Techniques, Universitat Bonn portrait landscape
• Proceedings from BadHonnef, 1995 pdf

Technotes

• E08-027 Technical Documents

Links

• splitted halog
• Ron Group at Hebrew University of Jerusalem.
• The JLab schedule webpage
• Spin Rotator website

Mailing List

There are two mailing lists relevant to g2p:

• g2p@jlab.org : General announcements
• g2p_ana@jlab.org : Weekly analysis

You can subscribe to both at http://mailman.jlab.org

Help

• HOW-TO use the g2pwiki.