Gld simulation tools and pfa studies
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GLD Simulation tools and PFA studies. Akiya Miyamoto KEK At 9-January-2007 FJPPL meeting. FJPPL. France Japan Particle Physics Laboratory France-(CNRS-CEA: LAPP, LLR, LPNHE, LAL, DAPNIA); Japan-KEK http://acpp.in2p3.fr/cgi-bin/twiki/bin/view/FJHEPL/WebHome

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GLD Simulation tools and PFA studies

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Gld simulation tools and pfa studies

GLD Simulation tools and PFA studies

Akiya Miyamoto

KEK

At 9-January-2007

FJPPL meeting


Fjppl

FJPPL

  • France Japan Particle Physics Laboratory

  • France-(CNRS-CEA: LAPP, LLR, LPNHE, LAL, DAPNIA); Japan-KEK

  • http://acpp.in2p3.fr/cgi-bin/twiki/bin/view/FJHEPL/WebHome

    • You have to register yourself to access internal info.

  • ILC detector R&D is one of the main projects of FJPPL.

K.Kawagoe, Sep. 2006


A common r d on the new generation detector for the ilc

“A common R&D on the new generation detector for the ILC”

  • Members

    • J.C. Brient, H. Videau, J.C. Vanel, C. de la Thaille, R. Poeschl, D. Boutigni

    • K.Kawagoe, T. Takeshita, S. Yamashita, T. Yoshioka, A. Miyamoto, S. Kawabata, T.Sasaki, G. Iwai

  • Goals

  • Design and development of reliable Particle Flow Algorithm (PFA) which allows studying the design and the geometry of the future detector for the ILC,

  • Design and development of a DAQ system compatible with the new generation of calorimeter currently in design and prototype for the ILC, and

  • Design and development of the optimized detector for the final ILC project, leading the participation of the LOI and TDR document for the ECAL point of view.

K.Kawagoe, Sep. 2006


Contents

Contents

  • GLD introduction

  • Tools for GLD studies

  • Few comments about GRID


Physics scenario at ilc

Physics Scenario at ILC


Ilc detector performance goals

ILC Detector Performance Goals

(http://blueox.uoregon.edu/~lc/randd.pdf)

  • Vertexing

  • Tracking

  • Jet energy(Higgs self-coupling, W/Z sep. in SUSY study)

  • Hermeticity

“High granularity” will be a key feature of ILC detectors


Gld simulation tools and pfa studies

SUSY study in jet mode

SUSY parameter:

m0=500GeV, m=400GeV

M2=250GeV, tanb=3

M2qq(GeV)

M2qq(GeV)

M1qq(GeV)

M1qq(GeV)

Hard to find

Neurtalino


Gld design concepts

GLD Design Concepts

  • Separate neutral and charged particle  PFA == Key for the good energy resolution

  • Segmentation of calorimeter : do to the limit of Moliere Radius

  • Large radius calorimeter : spatially separate particle( also good for tracker )

  • High B field : separate charged and neutral

Figure of Merit

Neutral energy inside certain distance from cahrgedscale ~ 1/R2


Gld configuration

GLD Configuration

GLD Side view

  • Moderate B Field : 3T

  • R(ECAL) ~ 2.1m

  • ECAL: 33 layers of 3mmt W/2mmt Scint./1mmt Gap

  • HCAL: 46 layers of

  • 20mmt Fe/5mmtScint./1mmt Gap

  • Photon sensor: MPPC ~O(10M) ch.

    Configuration of sensor is one of the R&D items


Gld configuration 2

GLD Configuration - 2

VTX:

Fine Pixel CCD: ~5x5mm2

2 layers x 3 Super Layers

TPC:

R: 0.452.0m, ~200 radial sample

Half Z: 2.3m

MPGD readout: srf<150mm

  • SIT: Silicon Strip

    Barrel/Endcap


Our software tools

Our Software Tools

  • lcbase : configuration files

  • Leda : Analysis tools (Kalman fitter, 4vector and jet findinder utilities )

  • jsf : Root-based framework

  • lclib : QuickSim and other fortran based utilities

  • physsim : Helas-based generator

  • Jupiter : Full simulation based on Geant4

  • Uranus : Data analysis packages

  • Satellites : Data analysis packages for MC data

  • We use only C++, except old fortran tools.

  • Link to various tools at http://acfahep.kek.jp/subg/sim/soft

  • GLD Software at http://ilcphys.kek.jp/soft

  • All packages are kept in the CVS. Accessible from http://jlccvs.kek.jp/


Gld simulation tools and pfa studies

JSF

  • Framework: JSF = Root based application

    • All functions based on C++, compiled or through CINT

    • Provides common framework for event generations, detector simulations, analysis, and beam test data analysis

    • Unified framework for interactive and batch job: GUI, event display

    • Data are stored as root objects; root trees, ntuples, etc

  • Release includes other tools QuickSim, Event generators, beamstrahlung spectrum generator, etc.


Jsf and root

JSF and ROOT

JSF is a ROOT based application to provide a common interface to physicists

Event

Generator

Detector

Simulator

Event

Reconstruction

Physics

Analysis

Beamtest

Analysis

  • Pythia

  • CAIN

  • StdHep

  • QuickSim

  • FullSim

  • Digitizer

  • Finder

  • Fitter

ROOT objects : Event Tree & Configuration

http://root.cern.ch/


Jupiter satellites for full simulation studies

Jupiter/Satellites for Full Simulation Studies

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


Jupiter feature 1

Jupiter feature - 1

  • Based on Geant4 8.0p1

  • Modular organization of source codes for easy installation of sub-detectors

  • Geometry

    • Simple geometries are implemented ( enough for the detector optimization )

    • parameters ( size, material, etc ) can be modified by input ASCII file.

       Parameters are saved as a ROOT object for use in Satellites later

  • Input:

    • StdHep file(ASCII), HepEvt, CAIN, or any generators implemented in JSF.

    • Binary StdHep file interface was implemented, but yet to be tested.


Jupiter feature 2

Pre-hits

Break point

Jupiter feature - 2

  • Run mode:

    • A standalone Geant4 application

    • JSF application to output a ROOT file.

  • Output:

    • Exact Hits of each detectors (Smearing in Satellites)

    • Pre- and Post- Hits at before/after Calorimeter

      • Used to record true track information which enter CAL/FCAL/BCAL.

    • Break points in tracking volume

    • Interface to LCIO format is prepared in a JSF framework

      • Compatibility is yet to be tested.


Gld geometry in jupiter

GLD Geometry in Jupiter

1 module

CH2mask

BCAL

FCAL

IT

Include 10cm air gap

as a readout space

VTX


Gld simulation tools and pfa studies

By H.Ono


Gld simulation tools and pfa studies

By H.Ono


Metis package

Metis package

  • Metis is a collection of reconstruction tools for Jupiter data.

  • Run as a JSAF module, i.e,

    • Jupiter data and reconstructed results are saved in a ROOT tree.

    • Each module is relatively independent, thus easy to implement different reconstruction algorithm according to user interests

  • Package under developments includes

    • IO: Geant4 objetcs to ROOT objects/ Interface to LCIO

    • Hit digitizer: Mostly simple smearing of exact hits

      • CAL hit maker : include a cell signal merger for strip configuration

    • Kalman fitter for TPC, IT, and Vertex

    • Cheated PFA

    • Realist PFA (GLD-PFA)

    • Jet clustering


Gld simulation tools and pfa studies

Typical Event Display

  • ZH → nnh : Two jets from Higgs can be seen.


Momentum resolution

Momentum resolution

Exact hit points created by single m were fitted by Kalman filter package

spt/pt2 (GeV -1)


A typical cal performance

A typical CAL. performance

by Y.Kawakami and H.Ono

K0L

Gamma

Energy Resolution(DE/E)

Performances have to verified/confirmed by beam tests in coming years


Gld simulation tools and pfa studies

e-

e+

Realistic PFA

  • Critical part to complete detector design

    • Large R & medium granularity vs small R & fine granularity

    • Large R & medium B vs small R & high B

    • Importance of HD Cal resolution vs granuality

  • Algorithm developed in GLD: Consists of several steps

    • Small-clustering

    • Gamma Finding

    • Cluster-track matching

    • Neutral hadron clustering

Red : pion

Yellow :gamma

Blue : neutron


Gld simulation tools and pfa studies

Jet Energy Resolution (Z-pole)

- Z → uds @ 91.2GeV, tile calorimeter, 2cm x 2cm tile size

All angle

  • Performance in the EndCap region is remarkably improved recently.

  • Almost no angular dependence : 31%/√E for |cosq|<0.9.

T.Yoshioka (Tokyo)


Gld simulation tools and pfa studies

Jet Energy Resolution

- Energy dependence of jet energy resolution.

Next step is

 Optimization of detector configuration

 Using physics process, such as ZH, TT, etc,

- Jet energy resolution linearly degrades. (Fitting region : |cosq|<0.9)

T.Yoshioka (Tokyo)


Cpu time data size

CPU time/Data size

( cpu time is about half at KEKCC, AMD 2.5GHz 64bit )


Benchmark processes

Benchmark Processes

Benchmark processes recommended by the Benchmark Panel.


Cross sections

5k events/4y

Cross sections

+ New physics

SM processes


Grid for ilc studies

GRID for ILC studies

  • ILC GRID in Japan has just begun

  • ILC Computing requirements in coming years

    • Full simulation based detector studies

      • Detector optimization

      • Background studies & IR designs, etc

      • These studies will be based on many bench mark processes.

      • Cross checking of analysis codes

    • Sharing and access to beam test data

  • GRID will be an infrastructure for these studies.

    • Data sharing

    • Utilize CPU resources

    • Among domestic/regional colleagues – easier access to codes & data

  • We are beginner. as a first step,

    • First: minimum resources

    • Get familiar tools and data sharing

      • CALICEVO & ILCVO


Grid configuration jpy2006

LCG UI

SLC3

GRID Configuration: JPY2006

LCG resource outside KEK

University

LCG

LCG/Grid Protocol

KEK-LAN F/W

ILC NFS

GRID-LAN F/W

SLC3

NFS

LCG/Grid Protocol

SLC4

LCG UI

KEKCC LCG

environment

CPU

Servers

LCG

SE2

SE

Existing KEK-ILC

group resource

SE: Storage Element


Gld simulation tools and pfa studies

Backup slides


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