Transcript 4th Concept Software Status Report

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October 20th, 2006
Concept Software
Status Report
C. Gatto
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ILCroot: a summary of features
CERN architecture (based on Alice’s
Aliroot)
 Full support provided by Brun, Carminati,
Ferrari, et al.
 Uses ROOT as infrastructure
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All ROOT tools are available (I/O, graphics,
PROOF, data structure, etc)
 Extremely large community of
users/developers
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Four MDC have proven robustness, and
reliability and portability
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The Virtual Montecarlo Concept
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Virtual MC provides a virtual interface to
Monte Carlo
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It decouples the dependence of a user
code on a concrete MC
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It allows to run the same user application
with all supported Monte Carlo programs
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The concrete Monte Carlo (Geant3,
Geant4, Fluka) is selected and loaded at
run time
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VMC Advantages
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It allows the comparison between Geant3
Geant4 and Fluka using the same geometry
and data structure (QA)
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You can generate and simulate different
events with different MC’s and merge the
digits
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Example:
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Geant4 for signal event
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Fluka for beam background
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digitization
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TGenerator Concept
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TGenerator is an abstract base class
It interfaces ROOT and the various event
generators (thanks to inheritance)
Possible to study
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Full events (event by event)
Single processes
Mixture of both (“Cocktail events”)
Generation of Cocktail of different processes
Rate and weighting control
Allow easy mixing of signal and background
More than a dozen Generators built-in
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ILCroot Strategy: Modularity
ILCroot Building Block: The Detector Class
 Detector-centric approach (vs Processorcentric)
 Main policy: each detector is responsible
for its code & data
 Cross-modules calls are not allowed
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Easy to work for groups across many countries
Allow for several versions of the same detector or
several detector of the same kind (ex. TPC & DCH)
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The Detector Class
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Both sensitive modules (detectors) and non-sensitive
ones are described by this base class.
This class must support:
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Geometry description
Event display
Simulation by the MC
Digitization
Pattern recognition
Local reconstruction
Local PiD
Calibration
QA
Data from the above tasks
Several versions of the same detector are possible
(choose at run time)
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Coordinating the Detectors
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Detector stand alone (Detector Objects)
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Detectors collaborate (Global Objects)
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Each detector executes a list of detector actions/tasks
On demand actions are possible but not the default
Detector level trigger, simulation and reconstruction are implemented as clients of
the detector classes
One or more Global objects execute a list of actions involving objects from several
detectors
Data are exchanged using a whiteboard techinque
The Run Manager
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executes the detector objects in the order of the list
Global trigger, simulation and reconstruction are special services controlled by the
Run Manager class
The Offline configuration is built at run time by executing a
ROOT macro
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Software Status
Bangalore version of ILCroot frozen (and
dismissed)
 Most of the algorithms are OK
 Too much hard-coding in the reconstruction
 Only DREAM and EMCAL geometry are 4th
Concept’s realistic
 Calorimeter response has some troubles
 Stable version: OK for training
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Status of ILCroot: Framework
Framework upgraded to last CERN version
(4.04.rev.06, Aug. 2006)
 Fluka, Geant3 and Geant4 interface work
smoothly (special derogation obtained for
Fluka from CERN) (V. Di Benedetto)
 GDML interface added (thanks to R. Brun)
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Status of ILCroot: TPC (F. Ignatov)
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New TPC for DCR implemented
All passive materials from Alice (walls, support, electronics, cable,
cage, etc.)
Gas: Ar-CF4 97%-3% (from M. Ronan, V. Lepeltier)
Readout:
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5 layers of Micromegas (from. P. Colas)
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150 layer of pads
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2 chip/layer -> 512 pixels
55 mm pitch
Pad Inner: Width 0.23 cm Length 0.42 cm
Pad Outer1: Width 0.34 cm Length 0.56 cm
Pad Outer2: Width 0.34 cm Length 0.85 cm
All the gas-related Physics is simulated (diffusion, finite pad size,
noise, etc.). Electronics is not.
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Status of ILCroot: DREAM (V. Di
Benedetto)
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Geometry completed. (including Endcaps). Two
versions available: 1 m and 1.5 m
Easily switch from Cu to W (however, need to
change calibration values of hS and hC)
2 months spent with CERN people trying to fix
G3/G4/Fluka issues.
Fluka seems working fine. We will be using it for
Valencia and DCR.
First studies will be out next week (after calibration
processes are completed)
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Status of ILCroot: Muon
Spectrometer (E. Cavallo, G. Terracciano)
DoD geometry is completed
 ESA’s CAD2GDML converter not ready ->
positioning tubes using TGeo (root)
 Hits + Event Display will be ready for
Valencia
 Full tracking (with hits smearing) hopefully
ready for final DCR studies (Jan. 2007?)
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Status of ILCroot: Tracking (F.
Ignatov)
New code with maximum parametrization
 However, still depends on layout (planar vs
circular layer)
 VXD being incorporated (need to adjust for
the materials in the new SiDmay06 version)
 Barrel only for Valencia. Endcap will be
included for the DCR studies
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More Issues
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VXD
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PID
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New B-field maps for extended DREAM (E. Cavallo)
Will add SiD map for our cooperative studies (M.
Demarteau)
Generators and Physics Studies
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Only in the DREAM module
Magnetic Field
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See Anna’s talk
See Anna’s talk
Background Studies
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Bob Kutschke & Daniele Barbareschi
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Conclusions
Work is proceeding quickly
 Many thanks to Marcel for his large support
 Good collaboration with FNAL being
established
 We are planning to strenghten that next year
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Backup slides
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Processing Flow
VTX Underlying event
VTXSignal event
Hits
Hits
SDigits
SDigits
Detector stand alone tasks
Digits
TPC
RecPoints
RecPoints
Tracks
Tracks
DREAM
Tracks
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RecParticle
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Detectors collaborate
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LCIO vs MONARC
MC Generation  Energy Deposits in Detector
MC Generation  Energy Deposits in Detector
SDigitization  Detector response from single particle
Digitization  Detector response combined
Digitization  Tracker Hits
Pattern Recognition  Recpoints
Track Finding  Tracks
Track Finding  Tracks
Track Fitting  Track Parameters
Track Fitting  Track Parameters
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