Polarized Electron Source Group


The Polarized Electron Source Group is responsible for generating the polarized electrons used at the Stanford Linear Accelerator Center (SLAC). This is accomplished by illuminating a photocathode with circular polarized light. The Polarized Electron Source Group personnel is responsible for maintaining the Polarized Light Source (PLS) and the photo injector, which creates the polarized electrons for fixed target experiments at SLAC. The photoinjector also delivers the unpolarized electron beam required by the PEPII program. Besides insuring uninterrupted operation of the injector, a considerable amount of R&D is carried out in the area of laser system and photocathode development.

Artist's rendering of the Polarized Electron Source in the Gun Test Lab

Injector and support facilities

The injector (CID)

The polarized electron gun

The LoadLock

The YAG-Ti laser

The Flash-Ti laser


Gun Test Lab

Cathode Test Lab

Ultra-high purity water station

High Voltage Test Facility


 December 12, 2007 Holiday luncheon at Dutch Goose

 July 18, 2007 Lunch with Katerina Ioakeimidi at Shiok Singapore Kitchen, Menlo Park

 February 13, 2007 Shi-Lun Pei (IHEP) seminar photos

 December 19, 2006 Holiday luncheon at Dutch Goose


 March 28, 2005 Farwell to Luh


December 2004 Yuri Mamaev at SLAC


PES Liason

Source Liaison Schedule (SLAC only)

PES Liaison Form

PES Liaison Form Instructions

Source Monitoring Responsibilities

Recipes to Create Virtual Printer on XP Windows PC


SLCPOLSOURCE Tech Notes (SLAC only).

R. Alley, et al., The Stanford Linear Accelerator Polarized Electron Source, SLAC-PUB-6489, Mar. 1995, 76 pp. (PDF 3.38 MB)

Recent Poster Presentations

Link to Polarized Photocathode Research Collaboration (PPRC)

Link to Photocathode and PES Gun procedures

Mesh Images

 Advances in Polarized Electron Sources for High-Energy Accelereators (CharlieFest Jan. 27, 2006)

Sources Meeting Notes (SLAC only)

Link to PES Sources Meeting Notes (2004)

Link to PES Sources Meeting Notes (2003)
Link to PES Sources Meeting Notes (11/26/02 - 12/17/02)
Link to PES Sources Meeting Notes (10/29/96-5/21/2000)

Polarization Seminar

Scheduled Talks (Public), Transparencies (SLAC only)

Approved High Energy Physics Experiments Using Polarized Electrons

End Station A (ESA) Experiments


Photos at end of E158 III data run, Sept. 10, 2003


Grants for polarized beam R&D (SLAC only)



Activities (SLAC only)

2003 Polarized Gun Cathode Installation

AD Polarized Electron Source Operator Certification Summary and Keys Issued



Sources Group home page

PPRC home page

ILC@SLAC Polarized Electron Source home page

ILC_PES Study Group home page

SLAC Home Page

This page maintained by Axel Brachmann and was last updated 12/13/2008 by Jym Clendenin.