A significant portion of the experiments performed at Jefferson
Laboroary require a polarized electron beam. A subset of these
are parity violation experiments which
have exceptionally stringent requirements on the quality of the
electron beam. As the sign of the electron beam
helicity reverses at the target of the experiment no other measurable
quantity of the electron beam change may
change. This includes the beam intensity, position, angle, or
energy.
To ensure this beam quality, a significant effort occurs at the
polarized electron source, where the laser beam and electron gun
combine to produce the intended electron
beam. Also significant is the ability to accelerate the beam to
high energy while transporting it to the
experimental target, all while maintaining a parity quality electron
beam.
LESSONS LEARNED
for parity violation experiments at Jefferson Laboratory is an on-going
series of meetings between scientists and students from the accelerator
and
physics division to learn from past experiences and meet new
challenges in the field of parity violation
experiments.
Parity Violation Experiment related links
Quick links to useful slides and talks
- Parity Violation Experiments at CEBAF
Beam
Specifications (PPT), Matt
Poelker, March 4, 2004
Page maintained by grames@jlab.org on January 13, 2005.