FISCAL YEAR 1990 HEARING BEFORE THE SUBCOMMITTEE ON ENERGY RESEARCH AND DEVELOPMENT OF THE COMMITTEE ON SCIENCE, SPACE, AND TECHNOLOGY ONE HUNDRED FIRST CONGRESS For sale by the Superintendent of Documents, Congressional Sales Office KF27 53935 Vol.4 1989a COMMITTEE ON SCIENCE, SPACE, AND TECHNOLOGY ROBERT A. ROE, New Jersey, Chairman GEORGE E. BROWN, JR., California ROBERT S. WALKER, Pennsylvania* CLAUDINE SCHNEIDER, Rhode Island DON RITTER, Pennsylvania SID MORRISON, Washington RON PACKARD, California ROBERT C. SMITH, New Hampshire D. FRENCH SLAUGHTER, JR., Virginia JACK BUECHNER, Missouri CONTENTS Page Prof. John Dirk Walecka, Scientific Director, Continuous Electron Beam Accelerator Facility (CEBAF), Southeastern Universities Research As- |