The converter control team is responsible for the maintenance of the software running on the various hardware platforms that control, monitor and diagnose power converters. In addition, new features are added as new requirements from either the operators or the power converter experts are requested. The converter control team is deeply invested in the development of the new generation of control platform known as FGC4.
Technologies
FGC2
The second generation of the Function Generator/Controller (FGC2) embedded controller was developed between 1998 and 2005. It was used for the 1700 power converters in the LHC and LHC experiments. Converters in the LHC have been operated with an FGC2 since 2008.
FGCLite
Due to radiation-induced beam dumps, a radiation tolerant variant of the FGC2 platform known as the FGCLite was developed between 2013 and 2016. Today 1022 FGCLite devices and 710 FGC2 devices are in operation in the LHC.
FGC3.1
The third generation of the Function Generator/Controller (FGC3) was developed during 2007 and 2011. Currently, this platform is used in all accelerators and experimental areas at CERN. Over 1,500 FGC3 devices are in operation controlling a large variety of power converters.
The FGC3 embedded hardware include one microprocessor, a DSP, and a microcontroller. Further, an FPGA serves to implement peripherals and glue logic.
FGC4
The 4th generation of the Function Generator/Controller (FGC4) is currently in an active development phase and will use the DI/OT as its hardware base. Both devices (DI/OT and the future version of the FGC controller – FGC4) are completely new products – in terms of hardware as well as software. As such, they require a lot of design choices to be made and currently many questions are still left open and unanswered.
Products
Class 51: LHC_PC
FGC2
Controls power converters in the LHC in non-radiation areas
Class 53: POPS
FGC2
Controls the PS Mains power converter
Class 59: RF_FGEN
FGC2
Used for function generation in the LHC RF system
Class 62: FPC
FGC3
Controls fast-pulsed converters
Class 63: PC
FGC3
Controls converters that require function generation and regulation
Class 64: SVC
FGC3
Controls Static VAR Compensator converters
Class 65: EPIC
FGC3
Used for diagnostics of Beam Interlock Systems
Class 91: MUGEF
MUGEF
Control of power converter in SPS with analog current regulation.
Class 92: FGCLite
FGCLite
Controls power converters in the radiation areas in the LHC using radiation-tolerant FGClite I/O module.
Class 93: ISEG
ISEG
Controls high-voltage low-power ISEG converters.
Class 94: DIGMUGEF
DIGMUGEF
Controls the SPS main circuit power converters with high-resolution digital current regulation.
Team Members
Current members of the Converter Control Team, ordered by start date.