Abstract
This chapter discusses the basic characteristics of synchrotron radiation and its related facilities and instrumentation. The synchrotron radiation is usually emitted by electrons moving in a circular orbit in the bending magnet. The radiation from insertion devices, such as the undulator and the multipole wiggler, which are positioned on the straight section of the storage ring, is of extremely high brilliance and also has a shorter wavelength with multipole wigglers than with bending magnets. The storage tings of advanced synchrotron radiation facilities are designed to have many long straight sections so as to accommodate such insertion devices as low emittance and high brilliance photon sources. Consequently, the tings always tend to become larger. Synchrotron radiation has a number of outstanding properties including (1) continuous spectrum from the infrared to the X-ray region, (2) high intensity, owing to the high current electrons accumulated in the storage ring, and (3) collimation of the emitted radiation in the instantaneous direction of flight of the emitting particles (the angular spread is of the order of 1 mrad).
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