美国能源部在阿贡国家实验室修建的一台同步加速器辐射装置——“高级光子源”——要到1996年才能正式投入使用,但是现在申请在这一装置上从事实验的科研小组的数量就已经超过了该装置所能容纳的程度。这一耗资4.56亿美元的设施是一台巨大的同步加速器,周长为三分之二英里。它可以产生出世界上最明亮的 X 射线束,用于材料科学、化学、物理学、医学和生物成象、地球物理学等多种领域 The US Department of Energy's synchrotron radiation unit, the “Advanced Photon Source,” built at Argonne National Laboratory, was not officially operational until 1996, but the number of research groups now seeking to conduct experiments on this unit It has exceeded the device can accommodate the extent. The $ 456 million facility is a giant synchrotron with a circumference of two-thirds miles. It produces the brightest X-ray beams in the world for materials science, chemistry, physics, medical and biological imaging, and geophysics