PROPOSALS FOR SYNCHROTRON LIGHT SOURCES.

Ever since it was first applied in the 1960s, synchrotron radiation from an accelerating electron beam has been gaining popularity as a powerful tool for research and development in a wide variety of fields of science and technology. By now there are some 20 facilities operating either parasitically or dedicatedly for synchrotron radiation research in different parts of the world. In addition there are another 20 facilities either in construction or in various stages of proposal and design. These are listed in a table. An attempt is made to discuss desirable design features and indicate how they are incorporated in the design using machines listed in the table as examples.