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Measuring short electron bunch lengths using coherent smith-purcell radiation

Patent ·
OSTI ID:872235

A method is provided for directly determining the length of sub-picosecond electron bunches. A metallic grating is formed with a groove spacing greater than a length expected for the electron bunches. The electron bunches are passed over the metallic grating to generate coherent and incoherent Smith-Purcell radiation. The angular distribution of the coherent Smith-Purcell radiation is then mapped to directly deduce the length of the electron bunches.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM
DOE Contract Number:
W-7405-ENG-36
Assignee:
Regents of University of California (Los Alamos, NM)
Patent Number(s):
US 5889797
OSTI ID:
872235
Country of Publication:
United States
Language:
English

References (2)

First observation of Smith-Purcell radiation from relativistic electrons journal September 1992
Observation of coherent Smith-Purcell radiation from short-bunched electrons journal June 1995