Claudia Haagen-Schützenhöfer

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Presentation transcript:

Claudia Haagen-Schützenhöfer 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…) Near Microcosm – First choice Near the Training Center – second choice Very near a Equipment Storage area Near a workshop area

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

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

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

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 …

Look at the other particle labs FERMILAB Lederman Science Center

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)

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

Rutherford Experiment

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 …)

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

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

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

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 : )

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

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

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

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

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

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

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

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

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

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

Cost Leybold Didactic Swiss-75,000chf Phywe bid-113,000euros 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???

Electron Spin Resonance

What? How? Why? 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.