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Practical Group

Practical Group. Teachers Lab At CERN. Jana Buresova Marla Glover Claudia Haagen-Schützenhöfer Alexander Krafft. Teachers lab at CERN. General concept Demonstration Equipment Cost. Where should the lab be?. It should be a fixed installation (room, lab, etc…)

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Practical Group

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  1. Practical Group Teachers Lab At CERN Jana Buresova Marla Glover Claudia Haagen-Schützenhöfer Alexander Krafft

  2. Teachers lab at CERN • General concept • Demonstration • Equipment • Cost

  3. Where should the lab be? • It should be a fixed installation (room, lab, etc…) • Near Microcosm – First choice • Near the Training Center – second choice • Very near a Equipment Storage area • Near a workshop area

  4. Who should us it? • It could become apart of existing teacher programs( HST, workshops, visits, etc…) • Create a program just to use for labs • An extension of programs • A follow-up program to existing programs • Teachers with a class of students • They would need to have passed a CERN training program to run the equipment and know and understand CERN procedures

  5. What should the lab look like? • Ideal • Classroom with lab space and terminals • Attached storage area • Attached workshop workshop classroom lab storage

  6. What should the lab look like? • Next best • Classroom with large demonstration area • Presentation Equipment • Storage nearby

  7. Look at other particle labs DESY – workshops for students and teachers in special lab (experiments with radioactivity, vacuum and cosmic rays) Also demonstrational experiments: Photoeffect, Compton Effect, Röntgen spectrum …

  8. Look at the other particle labs FERMILAB Lederman Science Center

  9. Look at the other particle labs • Fermilab • Educational center for both students and teachers • Workshops for students and pupils with hands-on experiments • Programmes not only about particle physics • Wide offer of different types of visits (1-day to 1-week)

  10. Equipment for Teacher’s Lab to show: • Structure of matter and basic properties of elementary particles • Particle acceleration • Particle detection

  11. Rutherford Experiment

  12. WHAT? • Historic experiment to investigate the structure of matter • Scattering • -spectroscopy • HOW? • A beam of - particles is scattered against gold sheet. • The intensity at different angles hints to structure of atoms. • WHY? • Investigate the internal structure of particles • To understand early methods of determining properties • Scattering (fixed target experiment) is a method to do particle physics (particle production, detection …)

  13. Millikan Experiment • WHY? • Measurement of e/m • Charge is an important particle property

  14. Stern-Gerlach Experiment WHY? • Electron spin and directional quantization are important properties of elementary particles

  15. Zeemann Effect WHY? • Shows basic properties of particles (quantization of energy levels, magnetic moment) • Methodology used in Cosmology

  16. Electron spin resonance WHY? • Alexander will show you later on • You can try it yourself in the coffee-break By the way: Don’t spill any coffee upon our electron!!! because ……. it won’t : )

  17. Cathode Ray Tube WHY? • Electric fields are used for acceleration • Magnetic fields are used for bending beams in accelerators • The change of trajectories due to magnetic fields is one principle of measurement in detectors

  18. Thomson’s experiment WHY? • Electric fields are used for acceleration • Magnetic fields are used for bending beams in accelerators • The change of trajectories due to magnetic fields is one principle of measurement in detectors

  19. Electron beam diffraction WHY? • The wave-nature of particles plays a role in acceleration • Scattering (fixed target experiment) is one method to do particle physics

  20. Superconductivity WHY? • Superconductors are important for the creation of accelerators and detectors

  21. Hall Effect WHY? • Magnetic fields of a certain flux play an important role in many experiments at CERN (acceleration, detection ...)

  22. Magnetic Nuclear Resonance WHY? • Precision measurement of magnetic fields is done by NMR at CERN

  23. Photoelectric Effect WHY? • Excitation by collision and emission of photons afterwards is one principle of measurement in detection

  24. Muon experiences HOW? • Cloud chamber (Workshop or Equipment) • KamioCan (HST 2000) • Experiments done by practical WorkingGroup QUARKNET • WHY? • Usage of cosmic rays for calibration of detectors

  25. Frank-Hertz Experiment (Neon) WHY? • The quantization of energy states in atoms is visualized • Excitation / Scintillation is one principle of measurement in detection

  26. Electron Positron Spectroscopy WHY? • The determination of resting and decay energy of particles is one step in detection • Spectroscopy is an important analytical method

  27. Cost • Leybold Didactic Swiss-75,000chf • Minus 10% discount-67,000chf • Minus duplicates-59,000chf • Phywe bid-113,000euros • Minus 10% discount • Minus duplicates • Room to negotiate • Other sources of economy???

  28. Electron Spin Resonance

  29. What? • Magnus Effect/Magnetic Fields/Rotational mechanics • Resonance/Spin Resonance • How? • The magnetic moments align in the permanent magnetic field. • The perpendicular alternating field creates excitation which results in the electrons absorbing energy then releasing it when it goes back to its ground state. • Why? • This will help students see how electron spin is used in medicine and materials.

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