Jefferson Lab, Newport News, Virginia 23606
June 9-10, 2003

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First Announcement

Electron scattering, parity violation experiments are striving for unprecedented levels of measurement precision. These experiments have stringent requirements on systematic uncertainties and, in particular, often require knowledge of the electron beam polarization at the 1-2% level. At Jefferson Lab, the upcoming Lead Parity Violation Experiment must measure the electron beam polarization to 2%, while the goal of the Q_Weak experiment is a 1% measurement of the polarization. In the future, one can only expect that requirements for 1% knowledge of the beam polarization will become more common.

This goal of 1% precision polarimetry is especially daunting in light of the fact that there exists only one polarimeter at Jefferson Lab currently capable of this precision, and even then, only at low currents.

The goal of this workshop is to discuss and examine existing and proposed electron beam polarization measurement schemes. In particular, we hope to discuss: 1) the systematic errors that limit the precision of existing Compton polarimeters and how these may be improved, 2) the limitations of Møller polarimetry and novel schemes to use Møller polarimetry at high beam currents and/or in continuous, non-destructive measurements, and 3) any novel concept the could be implemented with several GeV electron beams.

A preliminary list of topics includes:

• The HERMES Compton Polarimeter
• The Hall A Compton Polarimeter
• The Mainz A4 Experiment Compton Polarimeter
• The Hall C Møller Polarimeter
• Møller Polarimetry with Atomic Hydrogen Targets
• High Current Upgrade to the Hall C Møller Polarimeter
• The Jefferson Lab Polarized Source

Those who intend to participate in this workshop are requested to register with R. Harris by e-mail (harris@jlab.org). No registration fee will be required, but please register so that we can get an accurate head count.

Additional contributions to the workshop are also welcome (on a time available basis). Those who wish to do so should contact the organizing committee (listed below) by May 10.

Organizing Committee:

Richard Jones (UConn) Richard.T.Jones@uconn.edu
Kyungseon Joo (UConn) kjoo@phys.uconn.edu
Cynthia Keppel (Hampton/JLab) keppel@jlab.org
Dave Gaskell (JLab) gaskelld@jlab.org

content by gaskelld@jlab.org
maintained by webmaster@jlab.org
updated April 8, 2003