[Cuga] REMINDER: Pizza Seminar Series- Wednesday, August 17, 2011 - A message from Hari Areti

[Jennifer Schatzel]

*REPLY TO: jschatze at jlab.org*

*REMINDER*
Please RSVP by COB on Monday, August 15, 2011 to: jschatze at jlab.org

Wednesday, August 17, 2011
****CC F113****
12:00-1:30pm

*How are you doing Mr. PEPPo?*

A new possible way to produce polarized positrons


*Erica **Fanchini** *
Laboratoire de Physique Subatomique et Cosmologie


Abstract:
The accelerator facility of Jefferson Laboratory (JLab) is important for 
its high polarized

electron beam. With the upgrade it will be able to produce and 
accelerate polarized electrons

up to 12 GeV for nuclear studies.

A future benefit could be represented by the availability of a new 
source of particles: positrons.

They will help to deeply investigate the hadronic structure and 
especially the Generalized

Parton Distributions (GPDs) dependence on spin and charge.

 From the idea to convert electrons into positrons via two–step process, 
an amazing experiment

is under construction at JLab: the PEPPo experiment.

The Polarized Electrons for Polarized Positrons (PEPPo) experiment takes 
advantage from the

two polarization sensitive processes, bremsstrahlung and pair 
production, to generate polarized

positrons. The energy dependence of the polarization transfer from 6.3 
MeV longitudinally

polarized electrons to longitudinally polarized positrons is under concern.

Simulation, construction and characterization of the experimental 
apparatus are progressing

and we will discuss the current status of the operations.
-- 

Jennifer Schatzel

Physics Division Admin Support

Jefferson Lab

12000 Jefferson Ave.

Suite 16

Newport News, VA 23606

(757) 269-7583

(757) 269-7363 (fax)