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The Challenge

Join Erik Johansson as he delves into the fundamental processes and mysteries of nature at the Ecsite conference in Lisbon, June 1, 2007. Discover the intellectual challenges of understanding the universe, including questions about dark matter, mass, and the primordial quark soup. Experience the technological ingenuity behind the Large Hadron Collider (LHC), a 27 km particle accelerator where trillions of protons collide at almost the speed of light. Learn about the ALICE experiment, aiming to recreate conditions just microseconds after the universe's birth and unveil the secrets of matter and antimatter.

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The Challenge

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  1. The Challenge Erik Johansson Session S176 • Explore the fundamental processes and some of nature’s mysteries An intellectual and technical challenge Ecsite Lisbon, 1 June 2007

  2. Mysteries – the intellectual challenge • Is the universe that we know of only a small part of reality? • What is the dark matter of the universe? • What is mass? • Why is there practically only matter in the universe – practically no antimatter? • How does the primordial quark soup in the very early universe behave? Ecsite Lisbon, 1 June 2007

  3. The technological challenge • Build a 27 km particle accelerator that accelerates bunches of a hundred billions of protons to almost the speed of light and make them collide. • The detection challenge • The detectors exploring the particle collisions are huge precision instruments Ecsite Lisbon, 1 June 2007

  4. The LHC - CERN’s new flagship The LHC….work in progress! Two beams, each containing trillions of protons, will race around the 27km ring in opposite directions travelling at 99,999999 % of the speed of light… Soon at CERN

  5. A seven storey high and 45 m long precision instrument 1800 scientists from 35 countries

  6. Ecsite Lisbon, 1 June 2007

  7. A Large Ion Collider Experiment at the LHC • By colliding heavy ions, it will be possible to fill a region of space with the densest and hottest matter ever produced. • The ALICE experiment will explore the universe as it was in the first few microseconds after its birth: a soup of quarks and gluons. • http://aliceinfo.cern.ch/Public Ecsite Lisbon, 1 June 2007

  8. Revealing the secrets of nature.. • Explore the dark matter of the universe • The secrets of matter/antimatter • The process that generates mass • The processes in the early universe • … with some of the most complex devices ever constructed • … together with Science Centres. Ecsite Lisbon, 1 June 2007

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