Biomedical imaging center in SPring-8

A medical application subgroup of The SPring-8 Users Society drew up a plan of a building design for a Biomedical Imaging Center (BMIC) in cooperation with RIKEN.(1) From our experiences of more than 15 years in this field we have found that various energies of monochromatic X-rays, strong photon de nsities, as well as large exposure fields are necessary, and will thus impl ement them in the BMIC. We therefore proposed the installation of an undula tor and a wiggler. The BMIC is located 200m from the light source to obtain a 20cm-wide exposure field supposing that the wiggler device is installed at the light source. White X-rays from the undulator irradiate a target ele ment generating fluorescent. semi-monochromatic. and widely spread X-rays. Monochromatic X-rays, K-alpha, may be specifically extracted by cutting off the K-beta component. A monochromatic undulator beamline is now being cons tructed. The last light source should be the wiggler to cover a wide range of medical applications. (C), 2001 Elsevier Science B.V. All rights reserve d.