CAS, Inst High Energy Phys, Beijing 100049, Peoples R China
In our SLAC type of RF pulse compressor (SLED), the detuning device works not as well as expected. It happend that the detuning needles sticked to the sleeves when working at detuning mode. Due to this reason, we can not measure its energy multiplication factor. To solve the sticking problem of SLED needles, a prototype of the new SLED detuning system has been developed and it has been operated with high power successfully on BEPC Linac.