Development status of MJ power conditioning system for SG-Ⅲ laser facility

As an important component of segment amplifier system，SG-Ⅲ laser facilitys power conditioning system (PCS) consists of 108 power conditioning modules (PCMs)，which are divided into six segments．With the maximum energy stored in each PCM reaches 1.2 MJ，PCS stores 110 MJ energy，and 130 MJ maximally．Each PCM produces a pulse current for driving ten groups of Xenon flshlamps，20 flshlamps in total，and provides pumping energy for segment amplifier system．The current pulsewidth is 610s，and the peak value is 0.25 MA．PCMs function requirements，compositions and structure，and design methods are introduced，as well as function requirements and design methods of the key components．Performance of the first 36 PCMs applied to SG-Ⅲ laser facility proves that the specifications of PCS meet the design requirements and can make sure the small signal gain coefficient of segment amplifier reach 5.0% per centimeter, and PCS can provide adequate pumping energy for amplifier and fit the bill of lasers．