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A LLRF control and data acquisition system for the 8-cavity cryomodule1 atthe ILCTA has been implemented using three 33-channel ADC boards in a VXImainframe. One card each is dedicated to the cavity probes for vector control,forward power and reverse power measurements. The system is scalable to 24cavities or more with the commissioning of cryomodules 2 and 3 withoutadditional hardware. The signal processing and vector control of the cavitiesis implemented in an FPGA and a high speed data acquisition system with up to100 channels which stores data in external SDRAM memory. The system supportsboth pulsed and CW modes with a pulse rate of 5 Hz. Acquired data istransferred between pulses to auxiliary systems such as the piezo controllerthrough the VXI slot0 controller. The performance of the vector control systemis evaluated and the design of the system is described.

A vector control and data acquisition system for the multicavity LLRF system for cryomodule1 at Fermilab