NEW HIGHER-BRILLIANCE SOURCES OF INFRARED SYNCHROTRON-RADIATION

Citation
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
Citations number
22
Categorie Soggetti
Physics
ISSN journal
03926737
Volume
20
Issue
4
Year of publication
1998
Pages
415 - 437
Database
ISI
SICI code
0392-6737(1998)20:4<415:NHSOIS>2.0.ZU;2-B
Abstract
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.