ICALEPCS2013 - List of Authors (Semanaz, P.F.)

Paper

Title

Page

Migration from WorldFIP to a Low-Cost Ethernet Fieldbus for Power Converter Control at CERN

805

S.T. Page, Q. King, H. Lebreton, P.F. Semanaz
CERN, Geneva, Switzerland

Power converter control in the LHC uses embedded computers called Function Generator/Controllers (FGCs) which are connected to WorldFIP fieldbuses around the accelerator ring. The FGCs are integrated into the accelerator control system by x86 gateway front-end systems running Linux. With the LHC now operational, attention has turned to the renovation of older control systems as well as a new installation for Linac 4. A new generation of FGC is being deployed to meet the needs of these cycling accelerators. As WorldFIP is very limited in data rate and is unlikely to undergo further development, it was decided to base future installations upon an Ethernet fieldbus with standard switches and interface chipsets in both the FGCs and gateways. The FGC communications protocol that runs over WorldFIP in the LHC was adapted to work over raw Ethernet, with the aim to have a simple solution that will easily allow the same devices to operate with either type of interface. This paper describes the evolution of FGC communications from WorldFIP to dedicated Ethernet networks and presents the results of initial tests, diagnostic tools and how real-time power converter control is achieved.

Poster TUPPC096 [1.250 MB]

Paper	Title	Page
TUPPC096	Migration from WorldFIP to a Low-Cost Ethernet Fieldbus for Power Converter Control at CERN	805
	S.T. Page, Q. King, H. Lebreton, P.F. Semanaz CERN, Geneva, Switzerland
	Power converter control in the LHC uses embedded computers called Function Generator/Controllers (FGCs) which are connected to WorldFIP fieldbuses around the accelerator ring. The FGCs are integrated into the accelerator control system by x86 gateway front-end systems running Linux. With the LHC now operational, attention has turned to the renovation of older control systems as well as a new installation for Linac 4. A new generation of FGC is being deployed to meet the needs of these cycling accelerators. As WorldFIP is very limited in data rate and is unlikely to undergo further development, it was decided to base future installations upon an Ethernet fieldbus with standard switches and interface chipsets in both the FGCs and gateways. The FGC communications protocol that runs over WorldFIP in the LHC was adapted to work over raw Ethernet, with the aim to have a simple solution that will easily allow the same devices to operate with either type of interface. This paper describes the evolution of FGC communications from WorldFIP to dedicated Ethernet networks and presents the results of initial tests, diagnostic tools and how real-time power converter control is achieved.
	Poster TUPPC096 [1.250 MB]