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Summary of Simulation and Reconstruction. Shaomin CHEN (Tsinghua University). Framework and toolkit Application in ILC detector design. Jupiter/Satellites, Mokka/Marlin, Slic/org.lcsim. GLD calorimeter LDC HCAL CALICE data processing …. Four ILC Detector Concepts. GLD LDC SiD

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summary of simulation and reconstruction

Summary of Simulation and Reconstruction

Shaomin CHEN (Tsinghua University)

  • Framework and toolkit
  • Application in ILC detector design

Jupiter/Satellites, Mokka/Marlin, Slic/org.lcsim

GLD calorimeter

LDC HCAL

CALICE data processing

four ilc detector concepts
Four ILC Detector Concepts
  • GLD
  • LDC
  • SiD
  • 4th detector concept

Large, 3T B-field

Most of physics studies rely on precise measurement on multi-jets in the final state.

Medium, 4T B-field

Small, 5T B-field

Particle Flow Algorithm

(see Tamaki Yoshioka’s talk)

See John Hauptman’s talk

framework and toolkit
Framework and Toolkit
  • Jupiter/Satellites (Aisa)
  • Mokka/Marlin (Europe)
  • Slic/org.lcsim (US)
  • For large option (GLD) design
  • Use ROOT as a framework for data model

Ties Behnke’s talk

  • For medium option (LDC) design
  • Use LCIO as a framework for data model

Norman Graf’s talk

  • For small option (SiD) design
  • Use LCIO as a framework for data model
jupiter satellites concepts
Jupiter/Satellites Concepts

For real data

Tools for simulation Tools

Satellites

URANUS

JUPITER

METIS

Input/Output

module set

IO

JLC Unified

Particle Interaction

and

Tracking EmulatoR

Unified Reconstructionand

ANalysis Utility

Set

Monte-Calro Exact hits To

Intermediate Simulated output

LEDA

Library Extention

forData Analysis

Geant4 based

Simulator

JSF/ROOT based

Framework

MC truth generator

Event Reconstruction

JSF: the analysis flow controller based on ROOT The release includes event generators, Quick Simulator, and simple event display

mokka marlin concepts
Mokka/Marlin concepts

LCGEO

Ties Behnke’s talk

what is not there
What is not there

Ties Behnke’s talk

slic org lcsim concepts
Slic/org.lcsim concepts

LCDD

slic

lcio

Full simulation

Norman Graf’s talk

Fast simulation

GODL

lcio

lelaps

GeomConverter

Compact

Description

HEPREP

wired

Linear Collider Detector Description

Simulator for the LInear Collider

Generalized Object Description Language

org.lcsim

Analysis &

Reconstruction

Stdhep and LCIO files for signal and

Background avaliable on the web

three merge into one
Three merge into one?

Jupiter/Satellites

Mokka/Marlin

Slic/org.lcsim

application in detector design
Application in Detector Design
  • Detector optimization using PFA
  • Calorimeter segmentation study
  • Pion-zero reconstruction in ECAL+HCAL
  • Isolated gamma finding in ECAL
  • HCAL optimization using PFA

Tamaki Yoshioka’s talk

Hiroaki Ono’s talk

Daniel Jeans’ talk

Hitoshi Hano’s talk

Ties Behnke’s talk

particle flow algorithm pfa
Particle Flow Algorithm (PFA)

ILC detectors are required good jet energy resolution for the precise measurement of jetty events.

Jet energy measured by

  • Charged (~60%) : Tracker
  • Photon (~30%) : EM calorimeter
  • Neutral hadron (~10%) : EM/HD calorimeter

Required performance to separate W/Z mass.

Hiroaki Ono’s talk

calorimeter geometry in jupiter
Calorimeter Geometry in Jupiter

Readout Line =10cm

349.4cm

Solenoid

TPC

Barrel HCAL

229.8cm

Barrel ECAL

210cm

270cm

Endcap HCAL

VTX, IT

Barrel.InnerRadius=210cm

Endcap ECAL

Endcap.InnerRadius=40cm

IP

Barrel.HalfZ=280cm

419.4cm

280cm

299.8cm

Tamaki Yoshioka’s talk

calorimeter structure
Calorimeter Structure

Active Layer

Absorber

Current cell size :

1x1cm

Can be changed.

ECAL

W/Scinti./Gap

3/2/1 (mm) x 33 layers

HCAL

Fe/Scinti./Gap

20/5/1 (mm) x 46 layers

Tamaki Yoshioka’s talk

optimization using pfa
Optimization using PFA

With the PFA, we can start detector configuration optimization.

- B-field

- Calorimeter inner radius

- Hadron Calorimeter depth

- Calorimeter absorber material

- TPC endplate thickness

- Calorimeter granularity (Ono-san’s talk)

- etc …

Check jet

Energy resolution

Physics events: Zqq(uds) at 91.2 GeV and 350 GeV

Tamaki Yoshioka’s talk

calorimeter segmentation
Calorimeter Segmentation
  • We studied the cheated/realistic PFA performance with different cell/strip segmentation.
  • In cheated PFA, Z->qq event has analyzed and charged and neutral cluster overlapping contribute
    • Ecm=91GeV : Almost no segmentation effect has been observed.
    • Ecm=350GeV: jet energy resolution decrease by segmentation.
  • Realistic PFA performance at high energy region is still low jet resolution, should be improved.
    • 91GeV is used for PFA optimization for now.

Hiroaki Ono’s talk

optimization using pfa15
Optimization using PFA

• Jet energy resolution is studied by using Z→qq events.

ILC goal of 30%/√E has been achieved in the barrel

region of the Z-pole events.

• PFA performance with various GLD configuration has

been studied.

→ High B-field/Large Calorimeter gives better

performance as expected.

→ PFA performance of Pb calorimeter is comparable

to that of default configuration.

Tamaki Yoshioka’s talk

optimization from isolated
Optimization from isolated 
  • Motivated by GMSB
  • Angular Resolution Study
    • Position Resolution of ECAL cluster
    • Direction of Reconstructed gamma
  • Calorimeter Component Dependence
    • Cell size Dependence
    • Material Dependence

Hitoshi Hano’s talk

resolution of isolated
Resolution of isolated 

1 GeV

2 GeV

5 GeV

10 GeV

 (mrad)

 (mrad)

cos

cos

 (mrad)

 (mrad)

results of the isolated study
Results of the isolated  study
  • Angular resolution of default-GLD Calorimeter (W:1cm)
    • The angular resolution is estimated to be 125mrad/√(E/GeV)
  • Dependence on cell size granularity and material dependence (W, Pb) has been studied
    • No significant difference has been observed between 1cm and 0.5cm
    • Lead is better than Tungsten for isolated gamma
    • Energy resolution is same

Hitoshi Hano’s talk

pion zero resolution
Pion-zero resolution

Daniel Jean’s talk

results of pion zero study
Results of Pion-zero Study

Daniel Jean’s talk

ldc hcal optimization
LDC HCAL Optimization

Ties Behnke’s talk

ilc software test in calice
ILC Software Test in CALICE

Roman Pöschl’s talk