Transcript DAQ Issues
Detector DAQ Issues
Jean-Sebastien Graulich, Geneva
o Achievements Since CM23
o Detector DAQ
o Trigger
o Online Software
o Front End Electronics
o Schedule Milestones
o Summary
MICE CM January 2009
Jean-Sébastien Graulich
Slide 1
Achievements since CM22
TOF1 included in the DAQ and in the trigger
New flashADC (500MHz) installed for CKOV
Computer Clock synchronization fixed
Not 100% satisfactory: PCs are synchronized to each other but not to
the outside world (firewall issue)
Slow progress in including the target DAQ and CAM
into the online Data Stream
Progress has been slower than foreseen
MICE CM January 2009
Jean-Sébastien Graulich
Slide 2
Detector DAQ Issues
Known issues
Limit on the number of particle events
From DAQ itselfs ( about 200 Particles/Spill )
Was expected
Technical solutions exist
From Online Monitoring ( about 40 Particles per Spill )
Not expected
Need more investigations
Event reconstruction
Occasional and marginal mismatch between the number of particle
triggers in different VME boards
Recently, dramatic mismatch between the number of particle
triggers in the two crates for some runs
-> Serious Event building problem !
Need more investigations
Interface with EPICS becomes a top priority
MICE CM January 2009
Jean-Sébastien Graulich
Slide 3
Detector DAQ Issues
Feed back from user
Need better handling of DAQ crashes
Need loud, emphatic, and unambiguous indicators that
data are or are not being recorded.
MICE CM January 2009
Jean-Sébastien Graulich
Slide 4
Target DAQ issues
Progress slowed down
Need consistent integration with the stand alone target DAQ
We want a common software basis for file read/write operations
Target DAQ under deep revision
MICE CM January 2009
Jean-Sébastien Graulich
Slide 5
Trigger Issues
TOF0 and TOF1 trigger implemented
Particle Trigger selection by hardware
There is a plan to implement software selection
Not a priority for the moment
Particle Trigger pre-scaling
Needed because of limitation on the DAQ input rate
Need hardware intervention
Not fully satisfactory -> Need investigation
Need decision on the future of GVA1
Should it stay or should it go ?
GVA2 and GVA3 are gone already
MICE CM January 2009
Jean-Sébastien Graulich
Slide 6
Burst Gate Correlation
No progress achieved since CM22
GVA1 hit
Burst Gate
made narrow
MICE CM January 2009
Jean-Sébastien Graulich
Slide 7
Online Software
Unpacking library needs upgrade
Interface with G4MICE
New fADC (V1731) for CKOV
New version to be distributed next week
First task is to reproduce online histograms (David Adey)
See Software session for more details
Know issues
Online monitoring GUI tends to get stalled at the end of a
run
Online monitoring histograms are not labeled according to
detector names
That is a feature!
Need better Online plots for fADC
Current plots found not efficient in detecting broken channels
Not straight forward task (fluctuating baseline)
MICE CM January 2009
Jean-Sébastien Graulich
Slide 8
Front End Electronics
CKOV
New 500 MHz fADC has been installed
Performance has to be evaluated and compared to the previous scheme
There is no more TDC data for CKOV
TOF
TOF TDCs are not properly synchronized. Internal clock has to be distributed.
For the moment, we use the common Part. Trigger signal in ch0 of each TDC
TOF2: We miss some electronics
Shapers/Splitters: In production
TDC: One board missing
FADC: 3 boards missing
SW (aka Electron Muon Ranger)
A technical proposal has been submitted to the Technical board
MICE CM January 2009
Jean-Sébastien Graulich
Slide 9
FEE Issues
Cross Talk Issue
Not yet clearly understood
New design is under study
FADC firmware upgrade
Needed to allow significant reduction of data volume
Less samples per Particle event (currently 512 whereas only 60 are necessary
Zero suppression (to be tested)
Delicate operation
Splitter/Shaper Production
Board production is finished in Sofia
Discrete components are in hand in Geneva
Mounting will start in February
Missing TDC/fADC
Shouldbe ordered by Ludovico/Maurizio (funding issues)
MICE CM January 2009
Jean-Sébastien Graulich
Slide 10
Schedule Milestones
From CM22
DAQ review
Upgrade of fADC firmware
CAM data in Online Data Stream
DAQ migration to the DAQ/Control network
Target DAQ included in Detector DAQ
Tracker integrated in DAQ
Tracker integrated in Online Monitoring
TOF2 Shaper Production
TOF TDC Clock Synchronization
TOF1 in trigger system
Burst Gate Signal in the Trigger System
Approval of SW/EMR Front End Electronics
Production of SW/EMR Front End Electronics
Installation of the Online Reconstruction Farm
MICE CM January 2009
Jean-Sébastien Graulich
December 2009
November 4
Postponed
October 30
November 4
?
?
Started – Dec 15
December 10
December 10
December 13
Early November
? June 2009 ?
November-December
Slide 11
Schedule Milestones
New Milestones
Target DAQ included in Detector DAQ
DAQ migration to the DAQ/Control network
Installation of the Online Reconstruction Farm
Upgrade of fADC firmware
TOF2 Shaper/Splitter Production
CAM data in Online Data Stream
Tracker integrated in DAQ and OLM
TOF TDC Clock Synchronization
mid February
March 06
March 06
March 06
Started – mid March
end of April
end of April
end of April
DAQ review
Burst Gate Signal in the Trigger System
May 2009
need beam
Approval of SW/EMR Front End Electronics
Production of SW/EMR Front End Electronics
depends on INFN
September 2009
MICE CM January 2009
Jean-Sébastien Graulich
Slide 12
Summary
TOF1 has been integrated into DAQ, Trigger and OLM
CKOV readout has been upgraded
Many recent milestones have been missed
Serious problem with event building discovered
No real show stopper
All key issues can be solved before serious things start in May 2009
Deserve serious attention
First step is to get online diagnostic
Target DAQ will be integrated to Detector DAQ
Work still in progress
FEE for SW/EMR and TOF2 are priority tasks
Current DAQ issues can still be solved before Step 2
MICE CM January 2009
Jean-Sébastien Graulich
Slide 13