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Thomas Jefferson National Accelerator Facility, Center for Injectors and Sources

Mission: To design, build and maintain high performance particle beam sources for injectors and accelerators. Our core responsibility is the operation of the polarized electron source for the 12 GeV Continuous Electron Beam Accelerator Facility (CEBAF). Additionally, we operate sources and injectors for the 170 MeV Low Energy Research Facility (LERF), the 10 MeV Upgrade Injector Test Facility (UITF), and the 500 keV Gun Test Stand (GTS). Our research interests aim at the production of spin polarized electron and positron beams, magnetized beams and beams with orbital angular momentum. Our work specializes in extreme high vacuum chambers and diagnostics, very high voltage power supplies and electrodes, high power and radio-frequency lasers, robust and efficient photocathodes, and precision polarimetry.

Upcoming Meetings

  • Spin 2018 (website) September 10-14, 2018, Ferrara, Italy
  • Photocathode Physics for Photoinjectors (P3) Workshop(website), October 15-17, 2018, Santa Fe, New Mexico

Recent Publications

  • K. Aulenbacher, E. Chudakov, D. Gaskell, J. Grames, and K.D. Paschke, Precision electron beam polarimetry for next generation nuclear physics experiments, International Journal of Modern Physics E, 27, 7 (2018) 1830004 (57 pages) DOI: 10.1142/S0218301318300047 On-Line media:IJMPE_27_7_2018.pdf
  • Wei Liu, Yiqiao Chen, Aaron Moy, Matthew Poelker, Marcy Stutzman, and Shukui Zhang, "Evaluation of GaAsSb/AlGaAs strained superlattice photocathodes," AIP Advances 8, 075308 (2018); doi: 10.1063/1.5040593, View online: [1], media:GaAsSb_AlGaAs photocathode study.pdf
Group Photo.
CIS members are (l to r) Matt Poelker (Group Leader), Joe Grames, Bubba Bullard, Marcy Stutzman, John Hansknecht, Shukui Zhang, Carlos Hernandez-Garcia, Phil Adderley, Riad Suleiman.

Contact Us

Historical Timeline

CIS Library

CEBAF Operations

LERF Operations

UITC Operations

Gun Test Stand at LERF

Technical Areas

Research and Design

CEBAF Injector Upgrade

Useful Links

Quick Links to our R&D Area:
*  Injector Quick Reference Drawing 
*  CEBAF MeV Mott Polarimeter 
*  Parity Quality Beam 
*  Bubble Chamber 
*  Magnetized Electron Gun for JLEIC Cooler 
*  Resonant Polarimeter 
*  Vortex Beams 
*  Polarized Positron Beams for JLEIC 
*  EPICS Web' 



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