The CPIC LLRF is a fully digital RF to control two different cavities in the same Compact PCI-e Serial Rack. Each module is able to drive an RF cavity to 175MHz with a stability of ±0.15% when using the feedback loop. Other ADCs are used for diagnostics of the amplifier chain or extra monitoring functions.
It has been designed within the IFMIF project to support RFQ, MEBT and SRF Linac cavities but can be extended to other cavities. It is controlled by an EPICS IOC interface in order to ease its integration in an EPICS control system. Finally, it is compatible with White Rabbit Protocol to retrieve time and the reference frequency using optical fiber network.
It supports the following:
|Front End||Integrated 175MHz passband filters.|
|DAC||2 channels SMA; 1.25 Gsps; 16bits.
Dynamic range: -57dBm to 13dBm.
|ADC||16 channels SMA; 125 Msps; 14bits:
|Attenuators||Controlled by software from 0dBm to 32 dBm by 0.5dBm steps.|
|Noises||Harmonics< -65dBc Spurious < -65dBc.|
Graphical interface through EPICs variables.
Continuous wave and Beam Pulse mode.
Flexible, reconfigurable and customizable system.
Configurable Analog Input mode to receive different input signal levels.
Temperature compensation algorithms to improve stability.
SEVEN SOLUTIONS S.L.
Calle Periodista Rafael Gómez Montero, 2
CETIC-UGR 13, 18014
Granada - SPAIN