DESIGN OF A COMPACT SYNCHROTRON LIGHT-SOURCE FOR MEDICAL APPLICATIONSAT NIRS

A synchrotron light source dedicated to medical applications is requir ed to be compact for installation in limited spaces at hospitals. The NIRS storage ring, with a circumference of 44.8 m, is designed to acce lerate electrons up to 1.8 GeV and to store a beam of 400 mA. The ring is composed of superconducting bending magnets for downsizing. A beam of 300 MeV is injected into the ring from a microtron operated at an L-band RF frequency. There are two superconducting multipole wigglers with nine poles and a maximum field of 8 T, which can produce a photon flux of about 1.4 x 10(13) photons s(-1) mrad(-1) (0.1% bandwidth)(-1 ) at 33 keV used for coronary angiography.