HIGH ENERGY SYNCHROTRON RADMTION SOURCES* In tl-e \vorld there are no\\ ahout 31 iaboratories m i h countries engaged m the operation. construction or p i m m g of electron storaze rmgs. from a fex hundred Me\to above 10 Ge\'. ;is sources of \ynchrotron radiation for basic rind applied research In this report we describe thc new 3rd generation high energ! (I e. hard X-ray) saurces The first of these. the o Ge\' European S:nchrorron Radiation Facllit? (ESRF) m Grenoble. France starred operation in mid 1092 The 7 GeV Advanced Photon Source t.4P.S) at Argonne. VS.4 and the :i Ge\* Super Photon Rmg (Spring-8) m Nishi Haruna. Japan are expected to start operation for users a o u n d 1096-98 WTRODUCIION Abou~ 1 O.OO(! scientists now make use of the unique propenies of synchrotron radiation;