RADIATION PROTECTION SYSTEMS FOR THE FINAL FOCUS TEST BEAM AT SLAC

The Final Focus Test Beam (FFTB) is a new beam line at the Stanford Li near Accelerator Center designed to test new beam optics concepts, har dware, and techniques necessary to achieve and measure the small spot sizes required for future generations of high-energy e(+)e(-) linear c olliders. The FFTB takes a 47 GeVc(-1), 1 kW electron beam at the end of the Stanford Linear Accelerator Center linear accelerator and trans ports it to the FFTB beam dump, A radiation protection system was desi gned and installed for the FFTB with the primary goal that the integra ted dose equivalent outside the shielding resulting from beam loss wou ld not exceed 10 mSv y(-1). This system is comprised of shielding, a b eam containment system and a personnel protection system. This paper p resents various aspects of radiation safety at Stanford Linear Acceler ator Center that were considered in the design of the FFTB radiation p rotection system. Beam tests were conducted in which the performance o f various beam containment devices and the shielding effectiveness wer e evaluated, Preliminary results from these tests are presented.