Transcript Testing L3 muon unpacking online Paul Balm collaboration meeting, Oct 2000

Testing L3 muon
unpacking online
Paul Balm
collaboration meeting, Oct 2000
Testing of last weeks
• Scintillator data from cosmics
– 3 crates
• What did L3 do
– First actual look at the data!
– Get the crate/module ID from the data, from the
geometry obtain pos. of hit in D0 coordinates
– Pass/reject based on # hits in event
• Test was successful
– some events rejected (no hits -only trigger crate)
– some events successfully sent to Collector/Router
Oct 200 - collab. mtg.
Paul Balm
2
Tests remaining
• Repeat this test for PDT data
– currently there is a problem of
synchronization
– no idea when this is fixed (being worked on)
– then we can also try our tracking…
• Sync bits were not tested on in last week’s
test…
– that test must be put in the code (MF)
Oct 200 - collab. mtg.
Paul Balm
3
Requests for muon
commissioning
• Coincidence filter:
Pass if there is coincidence between specific
scintillators
• will greatly reduce noise (now >90% noise!)
• Implementation
– using the run config only will be too coarse (module
level)
– will need RCP config - need to think:
• how to list all scintillators in RCP
• how to discriminate internally in filter
– finding the time to do it is a problem…
Oct 200 - collab. mtg.
Paul Balm
4
Proposal - v0.0
• Examples of coincidences requested:
– SFE $22/Chan 19 with OR of (SFE $03/Chans 0-4)
– SFE $22/Chan 35 with OR of (SFE $03/Chans 16-20)
– SFE $23/Chan 03 with OR of (SFE $03/Chans 32-36)
• Use one filter for each type (1/line above)
– Config file (RCP): TrigSFE = 22
TrigSFEChanList = (19)
DataSFE = 3
DataSFEChanList = (0,4)
• This scheme only allows 2 OR-terms between 2
SFEs per filter, and either one channel per SFE or
a range. Filters can also be OR-ed
• Is that flexible enough?
Oct 200 - collab. mtg.
Paul Balm
5
Conclusion
• Learned from past test
– geometry has to be initialized, stream numbers, start
thinking about non-existent crates
– no severe problems in filter code
• Remaining testing
– L3 filters should not be a big problem - an afternoon
should be enough
– waiting for
• PDT synchronization problem
• sync bit test in unpacking code
• Coincidence filter
– Not a huge job once we figure out implementation
– sorry - I cannot give you a schedule
Oct 200 - collab. mtg.
Paul Balm
6