Timing jitter measurements at the SLC electron source

Abstract

The SLC thermionic gun and electron source produce a beam of up to 15x10'° t~ in a single S-band bunch. A 1701>e\. 2 ns FWHM pulse ot! of the gun is compressed by means of iwu subharmonk buucliT cavities followed by an S-band buncher and a standard SLAC Accelerating section. Ceramic gaps in the beam pipe at the output of the gun allow a measure of the beam intensity and liming. A measurement at these gaps of the timing jitter, with a resolution of < 10 ps, is described.