23–26 Jun 2009
IPNL, Building DIRAC, La Doua Campus, Lyon
Europe/Paris timezone

Polarized electrons for polarized positrons

24 Jun 2009, 11:00
30m
Amphithéâtre Dirac (IPNL, Building DIRAC, La Doua Campus, Lyon)

Amphithéâtre Dirac

IPNL, Building DIRAC, La Doua Campus, Lyon

Université Claude Bernard, 4 rue Enrico Fermi 69622 Villeurbanne France

Speaker

Dr Eric Voutier (LPSC/IN2P3/CNRS - UJF - INP)

Description

While a polarized positron beam offers a significant probe at a collider facility, it is also an important tool for the study of nucleon structure at a fixed target facility such as Jefferson Lab. For instance, a model independent extraction of the generalized parton distributions from deeply virtual Compton scattering requires both polarized electrons and polarized positrons. The feasibility of a polarized positron source based upon the CEBAF polarized electron source will be presented. In this scheme, the longitudinal polarization of the electron beam is transfered to positrons via intermediate elliptically polarized photons generated in a suitable conversion target via electron polarized bremsstralhung. This talk will discuss recent developments and status of a suitable polarized electron source, and progress for the characterization of a polarized positron source for a hadronic physics program.

Primary authors

Dr Eric Voutier (LPSC/IN2P3/CNRS - UJF - INP) Dr Joe Grames (JLab) Mr Jonathan Dumas (LPSC/IN2P3/CNRS - UJF - INP - JLab)

Presentation materials