Clustering: Algorithm development and analysis R. Cassell, G. Bower.

Slides:

Advertisements

Similar presentations

LC Calorimeter Testbeam Requirements Sufficient data for Energy Flow algorithm development Provide data for calorimeter tracking algorithms  Help setting.

Advertisements

Electromagnetic Showers with the MST Algorithm Niels Meyer The University of Iowa Matthew Charles, Wolfgang Mader, Usha Mallik ILC Workshop, Snowmass August.

A Study on Cluster Resolution Neighborhood hit density gradients are proposed as a means for -- identifying cluster boundaries -- implementing a cluster.

Testbeam Requirements for LC Calorimetry S. R. Magill for the Calorimetry Working Group Physics/Detector Goals for LC Calorimetry E-flow implications for.

EF with simple multi-particle states Vishnu V. Zutshi NIU/NICADD.

 Track-First E-flow Algorithm  Analog vs. Digital Energy Resolution for Neutral Hadrons  Towards Track/Cal hit matching  Photon Finding  Plans E-flow.

 Performance Goals -> Motivation  Analog/Digital Comparisons  E-flow Algorithm Development  Readout R&D  Summary Optimization of the Hadron Calorimeter.

ClusterID: Brief Update Gary R. Bower, SLAC Ron Cassell, SLAC Monday, December 09, 2002.

Individual Particle Reconstruction Norman Graf SLAC April 28, 2005.

LPC Jet/Met meeting 1/12/2006L. Perera1 Jet/Calorimeter Cluster Energy Corrections – Status Goal: To improve the individual jet energy determination based.

PFA Development – Definitions and Preparation 0) Generate some events w/G4 in proper format 1)Check Sampling Fractions ECAL, HCAL separately How? Photons,

Energy Flow Studies Steve Kuhlmann Argonne National Laboratory for Steve Magill, U.S. LC Calorimeter Group.

Energy Flow Studies Steve Kuhlmann Argonne National Laboratory for Steve Magill, Brian Musgrave, Norman Graf, U.S. LC Calorimeter Group.

General Trigger Philosophy The definition of ROI’s is what allows, by transferring a moderate amount of information, to concentrate on improvements in.

Cluster finding in CALICE calorimeters Chris Ainsley University of Cambridge, UK General CALICE meeting: simulation/reconstruction session 28  29 June.

Track Extrapolation/Shower Reconstruction in a Digital HCAL – ANL Approach Steve Magill ANL 1 st step - Track extrapolation thru Cal – substitute for Cal.

Evaluation of G4 Releases in CMS (Sub-detector Studies) Software used Electrons in Tracker Photons in the Electromagnetic Calorimeter Pions in the Calorimeter.

Studies of PFA Fundamentals Ron Cassell – SLAC SiD Workshop Jan. 28, 2008.

November 6, 2004Carl Bromberg, FNAL LAr Exp. Workshop Nov. 4-6, Particle ID, energy resolution, neutrino flavor tagging, efficiencies, backgrounds,

1 ACFA8, July , 2005, Youngjoon Kwon (Yonsei Univ.) Simulation / Recon. Workgroup summary for ACFA8  The Framework for Sim./Recon. Status report.

Cluster Finding Comparisons Ron Cassell SLAC. Clustering Studies This report studies clustering in the EM calorimeter, using SLIC simulated ttbar events.

1 Realistic top Quark Reconstruction for Vertex Detector Optimisation Talini Pinto Jayawardena (RAL) Kristian Harder (RAL) LCFI Collaboration Meeting 23/09/08.

Summary of Simulation and Reconstruction Shaomin CHEN (Tsinghua University)  Framework and toolkit  Application in ILC detector design Jupiter/Satellites,

CHEP06, Mumbai-India, Feb 2006V. Daniel Elvira 1 The CMS Simulation Validation Suite V. Daniel Elvira (Fermilab) for the CMS Collaboration.

Event Reconstruction in SiD02 with a Dual Readout Calorimeter Detector Geometry EM Calibration Cerenkov/Scintillator Correction Jet Reconstruction Performance.

PFA Template Concept Performance Mip Track and Interaction Point ID Cluster Pointing Algorithm Single Particle Tests of PFA Algorithms S. Magill ANL.

Development of a Particle Flow Algorithms (PFA) at Argonne Presented by Lei Xia ANL - HEP.

Anders Kirleis Stony Brook University The Design Of A Detector For The Electron Ion Collider.

1 Calorimetry Simulations Norman A. Graf for the SLAC Group January 10, 2003.

PFA Jet Energy Measurements Lei Xia ANL-HEP. June 19, 2007 Lei Xia 2 ILC requires precise measurement for jet energy/di-jet mass At LEP, ALEPH got a jet.

PFAs – A Critical Look Where Does (my) SiD PFA go Wrong? S. R. Magill ANL ALCPG 10/04/07.

Bangalore, India1 Performance of GLD Detector Bangalore March 9 th -13 th, 2006 T.Yoshioka (ICEPP) on behalf of the.

1 QuickSim - brief introduction - Akiya Miyamoto KEK 22 June 2005 GLD meeting See also.

13 July 2005 ACFA8 Gamma Finding procedure for Realistic PFA T.Fujikawa(Tohoku Univ.), M-C. Chang(Tohoku Univ.), K.Fujii(KEK), A.Miyamoto(KEK), S.Yamashita(ICEPP),

Photon reconstruction and matching Prokudin Mikhail.

PFA on sidloi3: update Ron Cassell 4/27/10. 2 Proposed changes Calibration Tracking Extrapolation Subcluster finding Muon finding Structure.

CALOR April Algorithms for the DØ Calorimeter Sophie Trincaz-Duvoid LPNHE – PARIS VI for the DØ collaboration  Calorimeter short description.

1 D.Chakraborty – VLCW'06 – 2006/07/21 PFA reconstruction with directed tree clustering Dhiman Chakraborty for the NICADD/NIU software group Vancouver.

Status of Reconstruction in sidloi3 Ron Cassell 5/20/10.

April 5, 2003Gregory A. Davis1 Jet Cross Sections From DØ Run II American Physical Society Division of Particles and Fields Philadelphia, PA April 5, 2003.

BESIII EMC Simulation & Reconstruction He Miao

Cal Cluster ID (a.k.a. Eflow) Gary R. Bower, SLAC Santa Cruz LCD Workshop June 28, 2002.

Individual Particle Reconstruction The PFA Approach to Detector Development for the ILC Steve Magill (ANL) Norman Graf, Ron Cassell (SLAC)

Recent multiplicity studies at ZEUS, Michele Rosin U. WisconsinHadron Structure 2004, Sept. 1st University of Wisconsin, Madison on behalf of the.

Update on Diffractive Dijets Hardeep Bansil University of Birmingham 12/07/2013.

7/13/2005The 8th ACFA Daegu, Korea 1 T.Yoshioka (ICEPP), M-C.Chang(Tohoku), K.Fujii (KEK), T.Fujikawa (Tohoku), A.Miyamoto (KEK), S.Yamashita.

TeV muons: from data handling to new physics phenomena Vladimir Palichik JINR, Dubna NEC’2009 Varna, September 07-14, 2009.

The ATLAS Electromagnetic and Hadronic End-Cap Calorimeter in a Combined Beam Test Tamara Hughes University of Victoria WRNPPC 2004.

12/20/2006ILC-Sousei Annual KEK1 Particle Flow Algorithm for Full Simulation Study ILC-Sousei Annual KEK Dec. 20 th -22 nd, 2006 Tamaki.

Status of SiD/Iowa PFA by Usha Mallik The University of Iowa for Ron Cassell, Mat Charles, TJ Kim, Christoph Pahl 1 Linear Collider Workshop of the Americas,

2005/07/12 (Tue)8th ACFA Full simulator study of muon detector and calorimeter 8th ACFA Workshop at Daegu, Korea 2005/07/12 (Tue) Hiroaki.

Study of Calorimeter performance using the LC full simulator The 8th ACFA Workshop Yoshihiro Yamaguchi (Tsukuba U.) M. -C. Chang (RCNS, Tohoku U.) K. Fujii.

BESIII offline software group Status of BESIII Event Reconstruction System.

ECAL Interaction layer PFA Template Track/CalCluster Association Track extrapolation Mip finding Shower interaction point Shower cluster pointing Shower.

1 Dead material correction status. Alexei Maslennikov, Guennadi Pospelov. Bratislava/Kosice/MPI Calorimeter Meeting. 8-December Problems with DM.

Simon Dean UCL Christmas Meeting 15/12/2008 "A bit of fast simulation and ttH"

Intelligent Norman Graf, Steve Magill, Steve Kuhlmann, Ron Cassell, Tony Johnson, Jeremy McCormick SLAC & ANL CALOR ‘06 June 9, 2006 DesignDetector.

Status of Reconstruction Studies for a Realistic Detector Ron Cassell SiD Workshop Nov. 15, 2010.

Performance of jets algorithms in ATLAS

slicPandora: slic + pandoraPFANew

Individual Particle Reconstruction

Sampling Calorimeter Reconstruction Issues and Approaches: An Overview

Argonne National Laboratory

Detector Optimization using Particle Flow Algorithm

Linear Collider Simulation Tools

Steve Magill Steve Kuhlmann ANL/SLAC Motivation

PHYS 3446 – Lecture #17 Particle Detection Particle Accelerators

LC Calorimeter Testbeam Requirements

PHYS 3446 – Lecture #18 Monday ,April 9, 2012 Dr. Brandt Calorimeter

Sheraton Waikiki Hotel

Presentation transcript:

Clustering: Algorithm development and analysis R. Cassell, G. Bower

Sept. 30, 2002Clustering: Cassell,Bower2 Clustering Algorithms Current clusterer (SimpleClusterFinder) : All adjacent hits in a calorimeter form a cluster Cheater: Use MC information, all hits associated with a particle form a cluster. Extremely useful for comparisons and evaluation.

Sept. 30, 2002Clustering: Cassell,Bower3 Refined Clusters Extend idea of adjacency across EM-HAD border. Works well with “gapless” detector, not as efficient for standard detectors. Need to extend across Barrel-Endcap borders. Adjacency extended to an integer number of bins in theta, phi, and layer.

Sept. 30, 2002Clustering: Cassell,Bower4 Tools Redefine detector segmentation: Detector definitions changed and CalorimeterHits rewritten for each event. Allows using existing data sets for comparing different detector segmentations. Redefine particles (MCParticle) to which calorimeter energy is assigned: CalorimeterHits rewritten so Cheater works correctly.Especially useful for particles that interact in inner walls of calorimeters.

Sept. 30, 2002Clustering: Cassell,Bower5 Evaluation Clustering analyzer in progress: will ultimately produce efficiency plots, purity plots, and energy resolution for each class of particle. (EM, Charged hadron, Neutral hadron) Full E-flow analysis: produce comparable quantities (t mass resolution?). We’re getting closer. Compare to Cheater.

Sept. 30, 2002Clustering: Cassell,Bower6 Energy Assignments Last year we calibrated the standard detectors using single particles, and produced sampling fractions and resolutions. Using those sampling fractions and resolutions on tt data, more problems.

Sept. 30, 2002Clustering: Cassell,Bower7 SD detector ttbar events

Sept. 30, 2002Clustering: Cassell,Bower8 SD Single 5 GeV Gammas

Sept. 30, 2002Clustering: Cassell,Bower9 Barrel Endcap response difference Correct by assigning different sampling fraction for barrel and endcap. Gismo/Geant4 differences in energy deposition under investigation: Total fraction of photon energy to ionization, fraction of ionization in active material, and effect of magnetic field all different in Geant4.

Sept. 30, 2002Clustering: Cassell,Bower10 SD single 5 GeV gammas

Sept. 30, 2002Clustering: Cassell,Bower11 SD tt events

Sept. 30, 2002Clustering: Cassell,Bower12 SD tt events

Sept. 30, 2002Clustering: Cassell,Bower13 EM Calorimeter response different for hadrons Need separate sampling fraction in EM calorimeter for hadrons and electromagnetic particles. Effect observed last year doing calibrations, (but forgotten by me) and magnitude of effect (40%) from tt data or single particle calibration.

Sept. 30, 2002Clustering: Cassell,Bower14 SD tt events

Sept. 30, 2002Clustering: Cassell,Bower15 Summary By Nov. meeting the beta test lcd.jar file should include an improved cluster finder, and the tools to analyze any cluster finder.