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Chasing the Higgs boson with a worldwide distributed trigger system

Chasing the Higgs boson with a worldwide distributed trigger system. Sander Klous NIKHEF VENI proposal 2006. Gary Stix, editor of Scientific American, January 2001. High Energy Physics. quarks. 10 -15 m. nucleus. atom. Electromagnetism Weak nuclear force Strong force. Higgs Boson

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Chasing the Higgs boson with a worldwide distributed trigger system

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  1. Chasing the Higgs boson with a worldwide distributed trigger system Sander Klous NIKHEF VENI proposal 2006

  2. Gary Stix, editor ofScientific American, January 2001

  3. High Energy Physics quarks 10-15 m nucleus atom

  4. Electromagnetism Weak nuclear force Strong force Higgs Boson Present predictions: About 100 x heavier than proton Very unstable Predominant decay to bottom quarks The Standard Model quarks up down charm strange top bottom Particles leptons electron neutrinos muon tau Forces

  5. CERN and ATLAS • Large Hadron Collider • 27km • High intensity • High energy ATLAS detector LHC tunnel

  6. Radiating top quarks • 40 million events per second • A few hundred signal events per year Time

  7. Physics streams 40 MHz Level 1 Level 2 Level 3 Accept 1 in 500 Accept 1 in 50 Accept 1 in 10 Data processing: Triggers and Filters • Standard ATLAS approach • Just a small signal expected in 2009/2010 • We can do much better…

  8. Fully hadronic decays

  9. Physics streams 40 MHz Level 1 Level 2 Level 3 Amsterdam Accept 1 in 500 NIKHEF/SARA Network switch Data processing: Triggers and Filters Accept 1 in 50 Computing grid Accept 1 in 10

  10. Project requirements Data-Analysis And B-physics • Big network switch • A few computers on site • Technical assistance Trigger experience Postdoc PhD thesis Funding Distributed computing Involved in VL-e and in Tier-1 activities.

  11. 2006 2007 2008 2009 2010 Timeline of Research Phase 1: Preparation • Deploy networking hardware • Commission hardware and software Phase 2: Beam on • Data collection and calibration • Analysis and algorithm development Phase 3: Harvest • Successful deployment of worldwide trigger • Find the Higgs boson

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