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

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Presentation transcript:

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

2 Gary Stix, editor of Scientific American, January 2001

3 High Energy Physics atom m nucleus quarks

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

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

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

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

8 Fully hadronic decays

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

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

11 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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