The Polarized Source and
Beam Diagnostics

A polarized source capable of producing a stable, high intensity electron beam which is free of systematic changes during polarization reversal is necessary for the G⁰ experiment. Development of the polarized electron source at JLab is an ongoing project undertaken by Charles Sinclair and his group as well as members of the G⁰ collaboration lead by Mark Pitt.

For a (now rather out-of-date) status report (as of February 1998) check out the appropriate section of the Cost and Schedule Review Report.

Additional information related to the polarized source can be found below:

• Documents, Memos, Internal Notes...
  

  G0 Doc. No.
  G0-99-005	First Results from the Injector DAQ - R. Tieulent and M. Pitt, January 1999 (Gnu-zipped postscript, 138 kb)
  G0-99-006	Pockels Cell Study - R. Tieulent and M. Pitt, January 1999 (Gnu-zipped postscript, 35.7 kb)
  G0-00-005	G0 Polarized Source to DAQ Interface Control Document - S. Pate, B. Beise, M. Pitt, Updated August 2000 (Gnu-zipped postscript, 19.2 kb)
  G0-00-016	Memo: Summary of the JLab Meeting on Policies for Setting Polarization at the Injector - C. Sinclair, February 7, 2000 (Gnu-zipped postscript, 41 kb) (Gnu-zipped MS Word, 6.5 kb)
  G0-00-056	PZT Test in the Injector - R. Tieulent, M. Pitt, M. Poelker, C. Sinclair, J. Hansknecht, and J. Grames, February 2000 (Gnu-zipped postscript, 118 kb)
  G0-01-053	Helicity Control Requests from the G0 Experiment - M. Pitt, August 20, 2001 (Gnu-zipped Postscript, 38.7 kb) (Portable Document Format, 110 kb)
  G0-01-054	Beam Parameter Specifications for the G0 Experiment - R. Carlini, S. Page, and M. Pitt, December 17, 2001 (Gnu-zipped Postscript, 22.0 kb) (Portable Document Format, 33.6 kb)
  G0-03-058	Gun and Laser Status, A Presentation at the June 2003 G0 Collaboration Meeting - J. Grames, June 18, 2003 (Portable Document Format, 300 kb)
  G0-03-060	Laser Table PZT Mirror and IA Studies, A Presentation at the June 2003 G0 Collaboration Meeting - R. Neveling and K Nakahara, June 18, 2003 (Portable Document Format, 293 kb)
  G0-03-072	Beam Polarization Plan, A Presentation at the June 2003 G0 Collaboration Meeting - D. Gaskell, June 19, 2003 (Portable Document Format, 145 kb)
  G0-03-077	G0 Injector Studies: July-August 2003 - R. Neveling, and K. Nakahara, August 27, 2003 (Portable Document Format, 1.22 Mb)
  G0-03-083	Beam Polarization, A Presentation at the September 2003 G0 Collaboration Meeting - D. Gaskell, September 25, 2003 (Portable Document Format, 222 kb)
  G0-03-086	Injector Testing, A Presentation at the September 2003 G0 Collaboration Meeting - K. Nakahara, September 25, 2003 (Portable Document Format, 406 kb)
  G0-04-022	Møller Polarimetry for Back Angle G0, A Presentation at the June 2004 G0 Collaboration Meeting - D. Gaskell, June 2, 2004 (Portable Document Format, 1.25 Mb)
  G0-04-034	Beam Optics for Parity Experiments, A Presentation at the International Workshop on Parity Violation and Hadronic Structure (PAVI/2004), Grenoble, June, 2004 - M. Pitt (presented by D. Beck), June 11, 2004 (Abstract, Portable Document Format, 54.8 kb) (Transparencies, Portable Document Format, 1.63 Mb) (Transparencies, Gnu-zipped MS PowerPoint, 1.49 Mb)
  G0-05-025	Laser Room Scans for HAPPEX and Backward Angles of the G0 Experiment - S. Bailey, April, 2005 (Portable Document Format, 345 kb)

• The JLab Polarized Source Web Pages maintained by Tony Day.

Information related to the strategies to be used to deal with AC-line-related noise and beam fluxuations:

• Fourier transforms of regular and irregular spin flip -- a quick look by W. Des Ramsay
  
  
• The "G0 120Hz Task Force" web page maintained by Steve Pate
  
  
• Archives of "G0 120Hz Task Force" e-mail discussions (note: another such archive appears on the above web page)
  • Index of messages by date
  • Index of messages by thread
  
  
  
• G0-99-049 Report of G0 120 Hz Task Force - S. Pate, B. Quinn, C. Furget, S. Kox, D. Beck, S. Williamson, R. Carlini, A. Lung, S. Wood, W. T. H. van Oers, W. D. Ramsay, J. Arvieux, X. Grave, R. Sellem, and M. Pitt, December 8, 1999
  (Gnu-zipped postscript, 40.6 kb)
  
  

Information related to beam diagnostics:

• Documents, Memos, Internal Notes...
  

  G0 Doc. No.
  G0-00-051	Documentation for the TRIUMF Voltage-Frequency Converter - provided by D. Ramsay, November 16, 2000 (Gnu-zipped tar archive of PDF files, 354 kb)
  G0-02-077	Specifications of a Beam-Synched Time Reference Device for the G0 Experiment - M. Pitt and B. Quinn, February 16, 2002 (Portable Document Format, 75.7 kb)
  G0-03-003	Requirements for Beam-Synched Signals for G0 - B. Quinn, J. Musson, M. Pitt, and P. King, March 14, 2003 (Portable Document Format, 7.03 kb)
  G0-03-011	Beam and Beamline, Status and Problems, A Presentation at the March 2003 G0 Collaboration Meeting - M. Pitt, March 6, 2003 (Portable Document Format, 716 kb)
  G0-03-017	Report of the Beam Working Group, A Presentation at the March 2003 G0 Collaboration Meeting - M. Pitt, March 7, 2003 (Portable Document Format, 9.08 kb)
  G0-03-059	Beam Monitoring / Control / Feedback Update, A Presentation at the June 2003 G0 Collaboration Meeting - M. Pitt, June 18, 2003 (Portable Document Format, 263 kb)
  G0-03-061	Cathode-to-Target Transport, A Presentation at the June 2003 G0 Collaboration Meeting - Y. Chao, June 18, 2003 (Portable Document Format, 284 kb) (Gnu-zipped MS Word Source, 602 kb)
  G0-03-062	Beam Halo, A Presentation at the June 2003 G0 Collaboration Meeting - S. Phillips, June 18, 2003 (Portable Document Format, 3.72 Mb)
  G0-03-063	BPM / BCM, A Presentation at the June 2003 G0 Collaboration Meeting - A. Rauf, June 18, 2003 (Portable Document Format, 106 kb)
  G0-03-071	Beam Properties / Monitor Working Group Report, A Presentation at the June 2003 G0 Collaboration Meeting - M. Pitt, June 19, 2003 (Portable Document Format, 31.7 kb)
  G0-03-085	Helicity Reversal Correlated Ground Loops, A Presentation at the September 2003 G0 Collaboration Meeting - R. Carlini, September 25, 2003 (Portable Document Format, 213 kb)
  G0-03-087	Beam Monitoring / Control / Feedback Update, A Presentation at the September 2003 G0 Collaboration Meeting - M. Pitt, September 25, 2003 (Portable Document Format, 236 kb)
  G0-03-091	Beam Properties / Monitor Working Group, A Presentation at the September 2003 G0 Collaboration Meeting - M. Pitt, September 25, 2003 (Portable Document Format, 37.4 kb)
  G0-03-106	Beam Halo in the First G0 Engineering Run - S. Phillips, October 27, 2003 (Portable Document Format, 4.46 Mb) (Gnu-zipped Postscript, 507 kb)
  G0-04-013	Beam Quality and Linear Regression Status, A Presentation at the June 2004 G0 Collaboration Meeting - K. Nakahara, June 1, 2004 (Portable Document Format, 272 kb)
  G0-04-030	G0 Beam Quality and Multiple Linear Regression Corrections, A Presentation at the International Workshop on Parity Violation and Hadronic Structure (PAVI/2004), Grenoble, June, 2004 - K. Nakahara, June 11, 2004 (Abstract, Portable Document Format, 33.5 kb) (Transparencies, Portable Document Format, 200 kb) (Transparencies, Gnu-zipped MS PowerPoint, 343 kb)
  G0-04-048	Beam Properties for Backangle Running, A Presentation at the September 2004 G0 Collaboration Meeting - R. Suleiman and M. Pitt, September 9, 2004 (Portable Document Format, 1.25 Mb) (Gnu-zipped MS PowerPoint, 1.63 Mb)
  G0-04-078	G0 Beam Quality and Multiple Linear Regression Corrections, A contribution to the Proceedings of the International Workshop on Parity Violation and Hadronic Structure (PAVI/2004), Grenoble, June, 2004 - K. Nakahara, October 29, 2004 (Portable Document Format, 523 kb) (Gnu-zipped Postscript, 523 kb) (Gnu-zipped tar archive of LaTeX source, 572 kb)
  G0-05-005	Beam Properties for Backangle Running, A Presentation at the January 2005 G0 Collaboration Meeting - R. Suleiman and M. Pitt, January 20, 2005 (Portable Document Format, 270 kb) (Gnu-zipped MS PowerPoint, 273 kb)