Upgrade issues of the TLS storage ring RF system

To achieve the goals in the TLS storage ring performance upgrade plan, the necessity of adding the third RF station to the storage ring for radiation loss compensation at 1.5 GeV/350 mA operation and lifetime improvement are analyzed. We estimated the RF power required to compensate the radiation losses by bending magnets and various insertion devices. Effects of the proposed passive Landau cavity on power consumption is also studied.