7 july 2009neil collins : university of birmingham1 minerva (workshop)

7 July 2009 Neil Collins : University of Birmingham

1

MINERVAMINERVA

(Workshop)(Workshop)

7 July 2009 Neil Collins : University of Birmingham 2

ContentsContents

• Development of MINERVA

• Standard model summary

• ATLAS physics program

• Principle of particle detectors

• ATLAS and Atlantis

• The exercise


MINERVA toolMINERVA tool

• A masterclass tool for students to learn about the ATLAS Experiment at CERN

• Based on a the ATLAS event display Atlantis

• Motivates identification of individual particles and events from the signatures seen in the ATLAS detector

• Project is a joint venture between the Rutherford Appleton Laboratory (RAL) and the University of Birmingham

• MINERVA is under constant development and we value your feedback!

Masterclass INvolving Event Recognition Visualised with Atlantis


The Standard ModelThe Standard Model

• Higgs boson is a requirement of the Higgs field (Provides a mechanism to give particles mass)

• Describes our current understanding of particle physics (How matter is constructed)

• Stable matter constructed from first generation particles– Hadrons (including protons

and neutrons) are composites of u and d quarks

– Protons, neutrons and electrons make up atoms which comprise all stable 'visible' matter

• Bosons carry the forces that allow particles to interact


The Standard ModelThe Standard Model


ATLAS Physics ProgramATLAS Physics Program• To further our knowledge on how the

universe is constructed and works– Understand the origin of mass (Higgs and

Supersymmetry)

– Look for physics beyond the standard model (GUT, SUSY, theories of everything)

– Are quarks and leptons fundamental?

– Other families of quarks, leptons?

– Why is there a matter-antimatter asymmetry in the universe?

– Check production rates of particles, like the W and Z particles


ATLASATLAS

The ATLAS experiment is a collaboration of about 2100 scientists from 167 institutions in 37 different countries.

ATLAS (A Toroidal LHC ApparatuS) is a typical modern detector comprising of a series of layers for particle I.D. and measurement


Identifying EventsIdentifying EventsCharged particles leaves tracks due to ionisationCurvature of the track and magnetic field strength gives us the momentum, direction gives us chargeNeutral particles leave no tracks

Electromagnetic Calorimeter measures the energy of electrons and photons

Hadronic calorimeter measures energy of hadrons (protons, neutrons, pions etc.)

Particles and events are identified by their detector signatures


Aims of the exerciseAims of the exercise


Log on detailsLog on details

• Log on to your PC

• Go to the start Menu > Run

• Enter '\\ugs5\phylabs\setup.bat' into the dropdown box

• Open a web browser

• Go to:

http://cern.ch/atlas-minerva

• Follow instructions on screen

Lines in red were onlyapplicable when running in the tutorialat Birmingham


MINERVAMINERVA


Backup slidesBackup slides


ResourcesResources• Main Minerva website:

• Access to handouts/instruction sheets (Also linked from Minerva page - Masterclass resources):

• ATLAS at CERN public website:

• The Particle Adventure (Good introduction to particle physics):

http://cern.ch/atlas-minerva

https://twiki.cern.ch/twiki/bin/view/Atlas/MinervaMasterclass

http://atlas.ch/

http://www.particleadventure.org/

7 july 2009neil collins : university of birmingham1 minerva (workshop)

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