U.S. Particle Accelerator School

Electron Beam Sources and Injectors course

Sponsoring University:

Vanderbilt University


Electron Beam Sources and Injectors


Charles Sinclair, Jefferson Lab and Bruce Dunham, General Electric

This course will cover both the underlying physics and the practical technology involved in designing and building injectors for electron accelerators. We take the injector to include all the accelerator elements necessary to produce a moderately relativistic beam with suitable longitudinal and transverse beam properties. We begin with a study of DC electron guns incorporating either thermionic or photoemission cathodes. Following this, beam transport, chopping, bunching, RF capture and acceleration, and electron beam diagnostics will be covered, along with the steps necessary to prepare and control polarized electron beams. RF electron guns will be covered if time permits. Details drawn from several state-of-the-art electron injectors will motivate both discussions and problem sets. The computational codes employed in electron gun and electron injector design (POISSON, EGUN, SUPERFISH, PARMELA, etc.) will be introduced and demonstrated in work sessions. Prerequisites: classical mechanics and electromagnetism.