1. CKM 26 Feb 2002 Triggerless DAQ Architecture

2. CKM 26 Feb 2002 Switch-based DAQ Operation (buffers) 8 9 10 11 4 9 10 11 4 9 6 0 5 6 7 0 1 6 7 0 1 2 3 8 9 10 11 8 5 6 4 5 2 4 1 2 7 4 1 2 3 0 1 2 3 8 9 10 11 8 9 10 7 8 5 3 4 5 6 3 0 5 2 3 0 1 2 3 8 9 11 4 9 6 0 5 6 7 0 5 6 7 0 1 6 7 0 1 2 3 844000 884440 888400 840000 999511 955111 995551 995511 10 6662 62222 622 66662 11 773 733 73333 7773

3. CKM 26 Feb 2002 … Front-end Boards MUX/Buffers Processors Switch Switch-based DAQ Architecture

4. CKM 26 Feb 2002 Cost Packaging Switch Utilization Off the Shelf Components

5. CKM 26 Feb 2002 … Front-end Boards / Buffers Processors Switch Alternate Switch-based DAQ Architecture

6. CKM 26 Feb 2002

7. 192 port Gigabit Ethernet Switch $240K ~10 GBytes/sec

8. CKM 26 Feb 2002 Processors Switches Parallel DAQ Branches (reduced switch costs) Front-end Boards / Buffers ……

9. CKM 26 Feb 2002 “192 port” Gigabit Ethernet Switch (8 X 24 ports, no cross-connects) $52K ~10 GBytes/sec

10. CKM 26 Feb 2002 16 port Gigabit Switch - $1300 PCI Gigabit Ethernet Adapter - $35 PMC Gigabit Ethernet Adapter - $600 Miscellaneous 32 port Gigabit Switch - $6400

11. CKM 26 Feb 2002 ProcessorGigabit Ethernet Adaptor Serial Ring I/F

12. CKM 26 Feb 2002 PCI Test Adapter

13. CKM 26 Feb 2002 Commercial Ring Interconnects 3GIO (GigaBridge)

14. 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

15. 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