Mark Dorman Separation Of Charged Current And Neutral Current Events In The MINOS Far Detector Using The Hough Transform Mark Dorman 16/12/04.

Slides:

Advertisements

Similar presentations

Mark Dorman UCL/RAL Hough Methods In The CC Analysis Of The Far Detector Mark Dorman Inclusion of Hough variables into PAN NC/CC discriminating power Obtaining.

Advertisements

Update on Data / MC Comparisons for Low Hadronic Energy CC-like Events Reminder of problem Fiducial studies with more MC statistics Effect of offset in.

14 Sept 2004 D.Dedovich Tau041 Measurement of Tau hadronic branching ratios in DELPHI experiment at LEP Dima Dedovich (Dubna) DELPHI Collaboration E.Phys.J.

Visible and Invisible Higgs Decays at 350 GeV Mark Thomson University of Cambridge =+

Lecture 5 Hough transform and RANSAC

Off-axis Simulations Peter Litchfield, Minnesota  What has been simulated?  Will the experiment work?  Can we choose a technology based on simulations?

1 N. Davidson E/p single hadron energy scale check with minimum bias events Jet Note 8 Meeting 15 th May 2007.

1Ellen L. Walker Segmentation Separating “content” from background Separating image into parts corresponding to “real” objects Complete segmentation Each.

1 PID Detectors & Emittance Resolution Chris Rogers Rutherford Appleton Laboratory MICE CM17.

Particle Identification in the NA48 Experiment Using Neural Networks L. Litov University of Sofia.

M. Kowalski Search for Neutrino-Induced Cascades in AMANDA II Marek Kowalski DESY-Zeuthen Workshop on Ultra High Energy Neutrino Telescopes Chiba,

Fitting a Model to Data Reading: 15.1,

Multiple Muons at the Far Detector Andy Blake Cambridge University Fermilab, December 2006.

CC/NC SEPARATION STUDY Andy Blake Cambridge University Friday February 23 rd 2007.

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

Scintillator (semi)DHCAL? Vishnu Zutshi for. Introduction Can a scintillator (semi)digital calorimeter work? Cell sizes are necessarily 6-12 cm 2 Can.

October 8, 2013Computer Vision Lecture 11: The Hough Transform 1 Fitting Curve Models to Edges Most contours can be well described by combining several.

I have made the second half of the poster, first half which is made by tarak will have neutrino information. A patch between the two, telling why we do.

Tracking within hadronic showers in the SDHCAL Imad Laktineh.

CBM Collaboration Meeting 1 Simulation Status V. Friese.

Energy Flow and Jet Calibration Mark Hodgkinson Artemis Meeting 27 September 2007 Contains work by R.Duxfield,P.Hodgson, M.Hodgkinson,D.Tovey.

Energy Flow Technique and *where I am Lily Have been looking at the technique developed by Mark Hodgkinson, Rob Duxfield of Sheffield. Here is a summary.

PERFORMANCE OF THE MACRO LIMITED STREAMER TUBES IN DRIFT MODE FOR MEASUREMENTS OF MUON ENERGY - Use of the MACRO limited streamer tubes in drift mode -Use.

1 Chapter 5 Image Transforms. 2 Image Processing for Pattern Recognition Feature Extraction Acquisition Preprocessing Classification Post Processing Scaling.

Non-identified Two Particle Correlations from Run I Understanding drift chamber tracking – Tracker and candidatory – Two particle efficiencies/ghosts A.

Functions and Graphs An introduction and overview.

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

E. Devetak – CERN CLIC1 LCFI: vertexing and flavour-tagging Erik Devetak Oxford University CERN-CLIC Meeting 14/05/09 Vertexing Flavour Tagging Charge.

Point Source Search with 2007 & 2008 data Claudio Bogazzi AWG videconference 03 / 09 / 2010.

CS654: Digital Image Analysis Lecture 25: Hough Transform Slide credits: Guillermo Sapiro, Mubarak Shah, Derek Hoiem.

Wenqi Zhu 3D Reconstruction From Multiple Views Based on Scale-Invariant Feature Transform.

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

CaloTopoCluster Based Energy Flow and the Local Hadron Calibration Mark Hodgkinson June 2009 Hadronic Calibration Workshop.

Detection of electromagnetic showers along muon tracks Salvatore Mangano (IFIC)

N. Saoulidou, Fermilab, MINOS Collaboration Meeting N. Saoulidou, Fermilab, ND/CC Parallel Session, MINOS Collaboration Meeting R1.18.

October 16, 2014Computer Vision Lecture 12: Image Segmentation II 1 Hough Transform The Hough transform is a very general technique for feature detection.

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

AI in HEP: Can “Evolvable Discriminate Function” discern Neutral Pions and Higgs from background? James Cunha Werner Christmas Meeting 2006 – University.

Study of pair-produced doubly charged Higgs bosons with a four muon final state at the CMS detector (CMS NOTE 2006/081, Authors : T.Rommerskirchen and.

26 Oct 2010PC Physics Requirements of Software from Chris R ~19 Oct. My.

Current Analysis Activity/Results (Only brief overview) Sunil Bansal (Panjab University, Chandigarh) Approved results marked.

POINT SOURCE ANALYSIS WITH 5-LINE DATA SUMMARY AWG PHONE CALL Juan Pablo Gómez-Gozález 20 th April

22 January 2009 David1 Look at dead material and fake MET in Jx samples mc08 10 TeV simulations, release J0 to J6 are tag s479_r586, ‘ideal geometry’

Calice Meeting Argonne Muon identification with the hadron calorimeter Nicola D’Ascenzo.

Progress Report on GEANT Study of Containerized Detectors R. Ray 7/11/03 What’s New Since Last Time?  More detailed container description in GEANT o Slightly.

Status of QEL Analysis ● QEL-like Event Selection and Sample ● ND Flux Extraction ● Fitting for MINOS Collaboration Meeting FNAL, 7 th -10 th December.

LCFI Physics Studies Meeting, 18 th October 2005Sonja Hillertp. 0 Using event display for improving Q vtx reconstruction  event display might help to.

Tau31 Tracking Efficiency at BaBar Ian Nugent UNIVERSITY OF VICTORIA Sept 2005 Outline Introduction  Decays Efficiency Charge Asymmetry Pt Dependence.

Backgrounds in the Muon Collider Experiments Adam Para, Fermilab MAP Collaboration Meeting, SLAC, March 8, 2012.

Recent Progress on Wire-Cell Xin Qian and Chao Zhang BNL 1.

Mark Dorman UCL/RAL MINOS ANL Meeting March 05 Dr. Quasi-Elastic (or... How I learned to stop worrying and love the Hough transform) Mark Dorman ● Update.

Mark Dorman – UCL/RAL – Calibration Workshop Talk Update on ND Strip-to-Strip Calibration Work Mark Dorman Calibration Workshop Fermilab, September 7-9.

Mark Dorman UCL/RAL MINOS WITW June 05 An Update on Using QE Events to Estimate the Neutrino Flux and Some Preliminary Data/MC Comparisons for a QE Enriched.

ΜTPC Reconstruction Status Report (…mostly a late night / weekend project … ) D. A. Jensen March 1, 2007.

A 2 veto for Continuous Wave Searches

Line Fitting James Hayes.

Fourier Transform: Real-World Images

A special case of calibration

Fitting Curve Models to Edges

Image Processing, Leture #12

4. Image Enhancement in Frequency Domain

Fast Track Fitting in the SiD01 Detector

Search for coincidences and study of cosmic rays spectrum

Hough Map Improvement

Finding Basic Shapes Hough Transforms

Introduction to Sensor Interpretation

p0 detection and reconstruction with the

Introduction to Sensor Interpretation

Introduction to Artificial Intelligence Lecture 22: Computer Vision II

Presentation transcript:

Mark Dorman Separation Of Charged Current And Neutral Current Events In The MINOS Far Detector Using The Hough Transform Mark Dorman 16/12/04

Mark Dorman The Problem ● Low energy (<3GeV) events are not always well reconstructed by the offline analysis software...

Mark Dorman The Problem (cont.) At low energies : ● Short muon tracks can look like part of an EM shower ● Hard to tell... Neutral Current Event Charged Current Event ● Must look in more detail at event topology...

Mark Dorman The Hough Transform ● A mathematical technique to detect lines in images. ● Here 'image' means a set of points in some 2D space that correspond to hits in the far detector. ● Formally the Hough transform can be represented: ● Where the delta is a Hough indicator...

Mark Dorman The Hough Transform ● A set of points (x,y) is mapped to a set of points (m,c). ● The Hough indicator is incremented by one if the contents of the bracket are zero... ● The highest Hough count corresponds to the most probable line (i.e. track) in real space.

Mark Dorman Using The Transform 1. A pair of coordinates (x,y) is chosen 2. A value of the gradient is chosen and the corresponding intercept is found 3. The corresponding bin in Hough space is incremented 4. Steps 2-3 are repeated for all gradients 5. Steps 1-4 are repeated for all coordinates ● To work with the transform Hough space must be binned with a set number of sample gradients...

Mark Dorman Real Space ● 6 hits on y=0.731x (and 17 hits of random noise)

Mark Dorman Hough Space ● Hough space is binned 80x80 with 40 sample gradients

Mark Dorman Results ● The most probable line is then drawn:

Mark Dorman Results ● The most probable line is then drawn: The program finds: Gradient (0.731) Intercept (1.428)

Mark Dorman Discriminating Power ● The HT provides a way of investigating the geometry of an event: ● A charged current event would be characterised by a well defined peak in Hough space. ● A neutral current event would have a 'ridge' corresponding to the set of lines in a jet with different gradients.

Mark Dorman Further Work ● Extend the program to search for multiple lines (peak localisation and rms values) ● Consider cuts to aid to the transform (possible weighting with energy) ● Integrate the code into the MINOS offline software using real MINOS variables as the input points (mock data challenge data)

Mark Dorman The End... Thanks for listening.