DAQ

1
DAQ

• May 25, 2000
• Harry Nelson

2
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

3
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 gt Bit3 gt PCI

4
Bandwidth contd

• PCI Box gt Event Builder with Myrinet, instead of
  Fast Ethernet - looks appealing
• non-DAQ - gt100 Mbyte/s
• cost ? About 20K more
• Could even stay Mac Labview
• In Crate Decimation - no progress, and it is
  another route to Bandwidth solution

5
Crate 2

• Some more infrastructure - probably Craig Maloney
  gt SUF to work over phone with Don Holmgren in
  next month
• Would like to implement In-Crate Decimation, or
  filtering

6
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

7
Functional Blocks

• Veto - peak sensor (Ray Bunker) - prototype
• Veto - pulser (Ray Bunker, Tony Piro) - prototype
• Veto - HV power - investigating CAEN record (Ray
  Bunker)

8
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

9
Soudan LAN

• Two T1s - 100s 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

10
Must dos

• UCSB Postdoc
• Settle Trigger Logic Board
• Settle High Voltage for Veto
• Make a new-style DAQ this summer for veto