L2 Goals

1
L2 Goals
? done

• Near term (by Oct 8)
• Demonstrate cutting on jets and SVT tracks
• Intermediate term (Nov 17 to end of 2001)
• Come back from shutdown cutting on jets and SVT
  tracks
• Commission SVT trigger operation
• Commission electron trigger
• Far term (early 2002)
• Establish stable L2 operation
• Commission remaining interface boards (RECES,
  ISOLIST, MUON) to cut on
• Electrons
• Photons
• Muons

work in progress
2
L2 near term plan(by Oct 8)
? done

• Cutting on jets
• Reliable CLIST
• Reliable L1 board
• Sync errors lt 10-6 L1As
• Automated HRR
• Cutting on SVT tracks
• Solve XTRP problem
• Reliable SVTlist
• Alfa code
• Cutting on electrons
• Solve XTRP problem
• Reliable XTRPlistCLIST
• Solve CLIST eta-phi errors?
• Alfa code
• Also
• Magic Bus tests design new backplane
• AC termination

SVT parallel path (backup)

• 2a. SVT to TS direct path
• Kludge card/cable
• Firmware
• RC work?

? done
? done

• not finished

?
?
?
? done Dec 1
?
? not done
? done
3
L2 plans for shutdown(Oct 8 to Nov 17)
? in progress

• Improve documentation
• Protocols
• FPGA firmware
• Etc.
• Prepare tests of MB arbitration (Oct 8-15)
• Remove delays from firmware
• Test different board configurations and
  characterize collision problem
• Install new MB (Oct 15-22)
• Repeat tests (see above) and compare
• Test at maximum bus load
• ISOLIST, RECES, extra TRACKlist, more Alfas
• Install new XTRP data boards (mid Oct)
• Full phi coverage
• At a lower priority (in this time frame)
• Test multiple Alfa operation
• Tests of ISOLIST and RECES

? done
? Installed on Dec 4
? done
? done
4
L2 milestones
? done

• Sept 19? New Magic Bus review
• Oct 25 New Magic Bus working with
• L1, CLIST, XTRPlist, SVTlist, 1 Alfa
• Artificial delays removed from firmware
• L1A rate 10KHz
• Deadtime from errors lt 2
• Data error rate lt 10-7
• Jan 1 New Magic Bus working with
• L1, CLIST, XTRPlist, SVTlist, 4 Alfas (RECES,
  ISOLIST)
• L1A rate 25 KHz
• Deadtime from errors lt 2
• Data error rate lt 10-7

old
?
?
?
20KHz
?
?
5
What if we fail the Oct 25 milestone?

• Implement a modified/simplified arbitration
  scheme that will allow us to trigger on jets and
  SVT shortly after we come up on Nov 17
• We need a very precise plan and maybe some
  preparatory work by Oct 25, so that we are
  confident it can be implemented by Nov 17
• Brainstorming of ideas must start now