Electro-optic measurement of the wake fields of a relativistic electron beam.
When a relativistic electron bunch traverses a structure, strong electromagnetic fields are induced in its wake. For a 12 nC bunch of duration 4.2 ps FWHM, the peak field is measured >0.5 MV/m. Time resolution of approximately 5 ps is achieved using electro-optic sampling with a lithium tantalate (LiTaO3) crystal and a short-pulse infrared laser synchronized to the beam. We present measurements for both the longitudinal and radial components of the field and relate them to the wall impedance.
Fitch
M J
MJ
Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, USA.
Melissinos
A C
AC
Colestock
P L
PL
Carneiro
J P
JP
Edwards
H T
HT
Hartung
W H
WH