CKM 26 Feb 2002 Triggerless DAQ Architecture
CKM 26 Feb 2002 Switch-based DAQ Operation (buffers)
CKM 26 Feb 2002 … Front-end Boards MUX/Buffers Processors Switch Switch-based DAQ Architecture
CKM 26 Feb 2002 Cost Packaging Switch Utilization Off the Shelf Components
CKM 26 Feb 2002 … Front-end Boards / Buffers Processors Switch Alternate Switch-based DAQ Architecture
CKM 26 Feb 2002
192 port Gigabit Ethernet Switch $240K ~10 GBytes/sec
CKM 26 Feb 2002 Processors Switches Parallel DAQ Branches (reduced switch costs) Front-end Boards / Buffers ……
CKM 26 Feb 2002 “192 port” Gigabit Ethernet Switch (8 X 24 ports, no cross-connects) $52K ~10 GBytes/sec
CKM 26 Feb port Gigabit Switch - $1300 PCI Gigabit Ethernet Adapter - $35 PMC Gigabit Ethernet Adapter - $600 Miscellaneous 32 port Gigabit Switch - $6400
CKM 26 Feb 2002 ProcessorGigabit Ethernet Adaptor Serial Ring I/F
CKM 26 Feb 2002 PCI Test Adapter
CKM 26 Feb 2002 Commercial Ring Interconnects 3GIO (GigaBridge)
CKM 26 Feb 2002 Some DAQ Cost Estimates Example system (1000 processors, 20 GBytes/sec) 1000 PCs$700K 1000 Serial Ring Adapters$200K 1000 Gigabit Ethernet Adapters$ 50K 85 Gigabit Ethernet Switches (16 port)$100K 16 Gigabit Ethernet Switches (32 port)$100K Cables, etc$ 50K Total ~ $1.2M
CKM 26 Feb 2002 Conclusion “Triggerless” DAQ architecture for CKM seems both reasonable and affordable ESE Department is very much interested in participating in CKM DAQ development