P. Roy et al., NEW HIGHER-BRILLIANCE SOURCES OF INFRARED SYNCHROTRON-RADIATION, Nuovo cimento della Societa italiana di fisica. D, Condensed matter,atomic, molecular and chemical physics, biophysics, 20(4), 1998, pp. 415-437
A new mechanism for the emission of infrared synchrotron radiation (IR
SR) is observed following the longitudinal acceleration or deceleratio
n of relativistic particles when leaving or entering a magnetic field
(edges of dipole or undulator). This emission may present significant
advantages in terms of brilliance and intensity compared to the emissi
on by constant field acceleration (center of the magnet). A full numer
ical integration of the electrodynamic fields have allowed a complete
review of the main characteristics of two sources of the 0.8 GeV ring
Super-AGO (Orsay, France): a dipole edge and an undulator. The intensi
ty of the emission (flux), brilliance, spatial distribution (asymmetry
of the source), dependence of the emission on the magnetic field and
polarisation have been evaluated for the emission in the infrared rang
e. These parameters are compared with equivalent measurements providin
g a confirmation of the theoretical predictions.