Injection system for the 8 GeV synchrotron radiation facility in Japan

The injection system for the new 8-GeV storage ring is described. The system is composed of a 1.5-GeV linac and a 8-GeV synchrotron which are able to accelerate electrons and positrons. In order to fill the storage ring with positrons in a short time, the synchrotron is operated as an accumulation ring to store the particles at 1.5 GeV for 8 s. The acceleration and deceleration in the synchrotron are each realized in 0.9 s. The linac and the synchrotron are described, and the operation scenario is presented. >