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DAQ
May 25, 2000
Harry Nelson
Meeting Schedule
• March - meeting at SUF, laid plans for overall work plan
• 1/week at UCSB
• Re-started weekly phone meetings - yesterday
• Late June DAQ meeting in UCSB - a postdoc candidate is planned to attend
DAQ `Bandwidth’
• At CDMS-II, near to saturating Fast Ethernet from in-crate processor to the event builder
• In-crate processors are somewhat behind the the competive `box’ processors
• (Bauer) - `quiet’ VME (eliminate VXI)
• (Holmgren) - VME > Bit3 > PCI
`Bandwidth’ cont’d
• PCI Box > Event Builder with Myrinet, instead of Fast Ethernet - looks appealing
– non-DAQ - >100 Mbyte/s– cost ? About $20K more
• Could even stay Mac + Labview
• In Crate Decimation - no progress, and it is another route to `Bandwidth’ solution
Crate 2
• Some more infrastructure - probably Craig Maloney > SUF to work over phone with Don Holmgren in next month
• Would like to implement In-Crate Decimation, or filtering
Functional Blocks
• ZIPS - Digitizers - a substantial set in hand
• Time History Unit– Veto - use `old’ digitizers, and make into an
`analog’ time history unit• this will be the prototype DAQ environment at
UCSB (Craig Maloney), to in part, transfer know-how about device drivers from Don Holmgren
– Detectors - sparse occupancy in Soudan• various proposals, one written up by Craig Maloney
Functional Blocks
• Veto - peak sensor (Ray Bunker) - prototype
• Veto - pulser (Ray Bunker, Tony Piro) - prototype
• Veto - HV power - investigating CAEN record (Ray Bunker)
Functional Blocks
• ZIPS - RTF/ `Trigger Conditioner ‘ (Burke, Sander)– Left debugged/fixed/layout fixed– Right now back from prototype, being tested
• ZIPS - VME/ `Trigger Logic Board’ (Burke, Sander)– Issues about handling of trigger lines
Soudan LAN
• Two T1’s - 100’s of Kilobytes– not enough for us and Minos!– What to do?
• Mass storage at Soudan– Tevatron Run-II/CLEO-III ….
• AIT-2 (Sony) 25 Gbyte/cassette
• Exabyte `Mammoth-2’ similar
Must do’s
• UCSB Postdoc
• Settle Trigger Logic Board
• Settle High Voltage for Veto
• Make a `new-style’ DAQ this summer for veto