Title :
Picosecond electron bunch length measurement by electro-optic detection of the wakefield
Author :
Fitch, M.J. ; Melissinos, A.C. ; Colestock, P.L.
Author_Institution :
Rochester Univ., NY, USA
Abstract :
The longitudinal profile of an 10 nC electron bunch of a few picoseconds duration will be measured by electro-optic detection of the wakefield. The polarization of a short infrared probe laser pulse (derived from the photocathode excitation laser) is modulated in a LiTaO 3 crystal by the transient electric field of the bunch. The bunch profile is measured by scanning the delay between the laser and the bunch, and is sensitive to head/tail asymmetries. A singleshot extension of the technique is possible using a longer chirped laser pulse
Keywords :
electro-optical devices; electron beams; measurement by laser beam; particle beam bunching; particle beam diagnostics; LiTaO3 crystal; bunch profile; chirped laser pulse; electron bunch; electrooptic detection; head/tail asymmetries; longitudinal profile; photocathode excitation laser; picoseconds duration; polarization; short infrared probe laser pulse; transient electric field; wakefield; Cathodes; Delay; Electrons; Laser excitation; Lasers and electrooptics; Length measurement; Optical pulses; Polarization; Probes; Pulse modulation;
Conference_Titel :
Particle Accelerator Conference, 1999. Proceedings of the 1999
Conference_Location :
New York, NY
Print_ISBN :
0-7803-5573-3
DOI :
10.1109/PAC.1999.794413
