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Magnets in High Energy Physics

Magnets in High Energy Physics. Welcome to Fermilab Ask-A-Scientist 1 May 2011. Fermilab : High energy particle physics research. What is the universe made of? How do the pieces interact?. Where do new particles come from?. E = mc 2 m = E/c 2. Fermilab Accelerator Complex.

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Magnets in High Energy Physics

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  1. Magnets in High Energy Physics Welcome to Fermilab Ask-A-Scientist 1 May 2011

  2. Fermilab: High energy particle physics research What is the universe made of?How do the pieces interact?

  3. Where do new particles come from? E = mc2 m = E/c2

  4. Fermilab Accelerator Complex

  5. Cockcroft-Walton 750 KeV LINAC 400 MeV Booster 8 GeV velocity = 0 0.04 c 0.71 c 0.994 c Main Injector 150 GeV Antiproton “Bottle” Tevatron 1000 GeV = 1 TeV 0.994 c 0.99998 c @ 8 GeV 0.99998 c 0.9999995 c

  6. What is a Magnet?

  7. How to make a magnet

  8. Basic uses of magnetic fields • Measure particlesExperiments use magnets to analyze events • Control particlesAccelerators use magnets to steer beams

  9. The force is sideways The particle bends in a circle Strong magnetic field, small circle High momentum particle, big circle A charged particle moving in a magnetic field feels a force

  10. Bubble chamber tracks

  11. Collider detector tracks (CDF)

  12. Cyclotron Ernest Lawrence

  13. Synchrotron String together many long skinny magnets in a big ring. Main Injector

  14. A Synchrotron Magnet

  15. Magnets in Main Injector

  16. Focusing magnets • Beam tends to spread out • Must constantly focus the beam • Special magnets do the job

  17. Focusing magnet

  18. Magnet work at Fermilab • Design, build, refurbish, repair, and test magnets for current operations • Designed and built special, high-strength, large aperture quadrupole magnets for LHC • Develop even higher strength magnets for future projects

  19. Even stronger magnets • M = E/c2 • Making higher mass particles requires more energy • Higher energy requires stronger magnets • Stronger magnets require more electric current • More electric current requires superconducting wire

  20. More to do at Fermilab • www.fnal.gov • Lederman Science Center • Buffalo, prairie viewing • Bicycling, walking • Concerts, dancing • Lectures, seminars • Educational programs

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