ELECTRONIC SYSTEM FOR SUPERCONDUCTING RF MODULE AT THE

The electron storage ring at the Synchrotron Radiation Research Center, as a third-generation light source, is routinely operated with a maximum beam current of 200mA with two DOIRS cavities. One major machine upgrade is being undertaken at SRRC. It involves replacing the existing Doris cavities with a single CESR-III superconducting module. A maximum beam current of 500 mA in a high-order-mode under well damped conditions is expected, and will significantly enhance the spectral brightness and stability of beam. Commissioning is scheduled for the spring of 2003. Two SRF modules of the Cornell design will be delivered from ACCEL. The associated electronics protect against the window arcing and cavity quench, and support cryogenic control of cryostat conditions. An existing low level RF system is being modified and expanded for functional integration with the SRF modules. The electronic integration of the SRF modules is reported.