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ILC Trigger & DAQ Issues - ILC Trigger & DAQ Issues - 11
ILC DAQ issuesILC DAQ issues
By P. Le Dû
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ILC Trigger & DAQ Issues - ILC Trigger & DAQ Issues - 22
Software Trigger concept Trigger concept No hardware trigger !No hardware trigger !
Sub-Detectors FE Read-outSignal processing – digitization, no trigger interrupt
Sparcification,cluster finding and/or data compressionBuffering
Sub-Detectors FE Read-outSignal processing – digitization, no trigger interrupt
Sparcification,cluster finding and/or data compressionBuffering
Data Collection is triggered by every train crossing
Trigger :Software Event Selection using partial information of a complete train (equivalent to L1)
Select ‘Bunches Of Interest’Event classification according to physics, calibration &
machine needs (HLT)
Data Collection is triggered by every train crossing
Trigger :Software Event Selection using partial information of a complete train (equivalent to L1)
Select ‘Bunches Of Interest’Event classification according to physics, calibration &
machine needs (HLT)
Monitoring & on-line processing Monitoring & on-line processing
S1 S2 S3 S4 Sn
1 ms
200 ms
Few sec
Data streams
Read-OutBuffer
Network
DetectorFront End
ProcessorFarm(s)
Storage
3000 Hz
Few Hz1 MBytes Average
event size
Data Flow
up to 1 ms active pipeline
(full train) Dead time free
ILC Trigger & DAQ Issues - ILC Trigger & DAQ Issues - 33
ILC DAQ conceptual (GLD) Architecture
VFD VTX ECALTPC HCAL MUON
P PPPP PPPP PPPPP P P
Data Steams Logger and Mass Storage
Event buildingNetwork
10-20 Gbit/sec
Processor farm (one bunch train per processor)
Event manager & Control
Detector Buffering (per bunch train in Mbytes/BT = 140 MB/s)
Links
Select Bunch Of Interest (200 Hz)
SiTMachine
1 G 2.6 M5 M5K 4568 K 12K9215K
10k 5MB 1MB 110 MB 20 MB 3 MB 1 MB
1GB/s = 100 PB/year
ILC Trigger & DAQ Issues - ILC Trigger & DAQ Issues - 44
About systems boundaries …..moving due to !
evolution of technologies,sociology …...Subdetectors FE Read Out
Signal processingLocal FE Buffer
MachineSynchronization
Detector feedbackBeam BT adjustment
Data Collection (ex on-line)Bunch Train data collection from Buffer RO
Bunch Of Interest selectionSW trigger & algorithms
Event BuildingControl - supervisorOn line Processing
Global calibration ,monitoring and physicsLocal (temporary) Data logging (Disks)
Full Integration of Machine DAQ
In the data collection system
NEW !
Global Detector Network
(worlwide)Detector IntegrationRemote Control Rooms (3?)– Running modes
Local stand alone Test Global RUN
– Remote shiftsSlow controlDetector Monitoring
Physics & data analysis Physics & data analysis (ex On- Off line)(ex On- Off line)
– FarmsFarms– GRID …GRID …
Final Data storageFinal Data storage
Read out Node Partitionning
(physical and logical)
Read out Node Partitionning
(physical and logical)
Uniform interface
ILC Trigger & DAQ Issues - ILC Trigger & DAQ Issues - 55
Cosmic trigger ?????Cosmic trigger ?????– Very useful during installation and debuggingVery useful during installation and debugging– Compatibility with power cycling ????Compatibility with power cycling ????
Clock, machine synchronization and timing Clock, machine synchronization and timing distribution distribution – with experts from LHC ! (Ph. Farthouat)with experts from LHC ! (Ph. Farthouat)
Somes Issues
To be discussed in specific meetings
ILC Trigger & DAQ Issues - ILC Trigger & DAQ Issues - 66
Current view of a uniform RO architecture
PreampliShaperDigitizer
VTXCCDMAPSDEPFET…..
TRKSiTPC
ECALSi WScint
W
HCALDigitalAnalog
MuonRPCScint …
VFD
Sensor technology
FPGA
ReceiverDigital Processing
MUX RO Buffer
LocalData
Management
GDN
Local/Global Controls & ServicesPartitionRunning mode (Stand alone, test, RUN) Synchronization & machine interface Databases : Calibration & Monitoring ……
Integration To be studied!
On detectorVery Front End
Local SignalProcessing
andbuffer
Common/uniformInterface
Front End(On / Near detector)
Commercial standardDedicated ASIC and/or SOC*
Read Out Node/Hub
*System On Chip
GlobalDetectorNetwork
ILC Trigger & DAQ Issues - ILC Trigger & DAQ Issues - 77
ILC ‘today’ Data Collection Network ILC ‘today’ Data Collection Network modelmodel
Run Control
MonitoringHistograms
Event Display
DCS
Databases
...
AnalysisFarm
Mass storage Data logging
ConfigManager
Local/worldwide
Remote(GDN)
Synchro
NO On line – Off line boundary
Local/Global Network(s)Wordlwide!
Machine BxBT feedback
Local partition
Data collectionSw triggers
Sub DetectorRead-Out
Node
FPGA
receiver Buffer
FPGA
receiver Buffer
FPGA
receiver Buffer
Proc
receiver Buffer
Data link(s) Services
Networking Hub
On/Near Detector Front EndOn/Near Detector Front End
FPGADirect network accessFrom
Detectors
Trigger Farms & Analysis
Co
ntr
ols
&S
tora
ge
se
rve
rs
EVENT BUILDER NETWORKMulti Terabit/s
ILC Trigger & DAQ Issues - ILC Trigger & DAQ Issues - 88
Trigger & Event Analysis COMPUTING MODEL
Sec. Temporary storage
•Monitoring •Calibration•Alignements
• Physics monitoring•“Gold Platted“ events• Physics samples
Bunch TrainProcessing
(ex L1)
Database
“Garbage”Final storage
CandidatesStorage
Calibration ConstantsSub-Detector performance
“Analysis” farm “Analysis” farm
SamplePrescale
Compress
Fast Analysis Stream Physics streams
200 ms
Hours
Days
Year
S1S1 S2S2 SnSn
Bunch Of Interest & classification
Simple signatures : e/g , µ, taus ,Jet •Detector matching
Complex signatures :• PFA•Missing Et, scalar Et•Invariant and transverse mass•separation …•vertices, primary and displaced• Selection:•Thresholding•Prescaling•“Intelligent formatting “
Bunch train Software Trigger
(equivalent to L1)using fast and/or simple
information at the bunch level
•Machine Infos
Event Classification (HLT)ON LINE
OFF LINE
200 Hz
ILC Trigger & DAQ Issues - ILC Trigger & DAQ Issues - 99
Computing and communication Computing and communication trendstrends
1000Gbit/IN2
1000Gbit/IN2
10Mbit/IN2
10Mbit/IN2
2015
1Gbit/IN2
1Gbit/IN2
Mas
s st
orag
e
Mas
s st
orag
eB
andw
idth
Ban
dwid
th
ILC Trigger & DAQ Issues - ILC Trigger & DAQ Issues - 1010
Read Out evolution LHC --> ILCRead Out evolution LHC --> ILCSubdetector
Read Out Crate(VME 9U)
Read Out Driver
Read Out Buffer(3 ROBin)
ROS(150 PCs)
Gbit Link to Gbe Switch (60 PCs)
92SLink
Subdetector
400 Robin (PCI)
AMC
ATCA Module
ATCA Crate
Digital Buffer
CCTA
ILC Trigger & DAQ Issues - ILC Trigger & DAQ Issues - 1111
What next
Common work with Machine CTRL group
–ATCA– GAN–(Slow) Controls
Look for EUDET 2 ???? Workplans– ATCA experience– Global (Test beam) Detector networking
Between DESY/CERN,FNAL/SLAC,KEK ????