Slide 2 Project Overview Slide 3 Overview The Project(s) Goal
Building Issues VERY VERY VERY Preliminary Planning Slide 4 The
Project(s) Originally one Project (started pushing for it in 1999)
Split into three Sub-Projects The Cosm School Students Lab
Microcosm Gardens UA1 Central Detector Display Slide 5 Situation
Cosm is located in building 143 Slide 6 Project 1 Slide 7 Goal
Present modern physics education in this direction is part of the
CERN mandate. The School Students Lab will provide a hands-on lab
area for visiting (school) students display and present modern
physics to a more general public extend the educational programme
Slide 8 Cosm currently the complete building is used as exhibition
space most platforms are made of concrete Slide 9 Cosm School
Students Lab General Idea Slide 10 Cosm School Students Lab General
Idea contd Slide 11 What is a school students lab? In the recent
past, many schools have faced the problem that out of financial
reasons, only a very limited number of experiments could be
acquired and performed in school. This lead to a wave of school
students labs, where these experiments and even more modern ones
are made available and can be performed together with the personnel
there. Slide 12 Prototype School Students Lab Activity standard
school student lab activity is planned for 2.5 hrs standard
ingredients: general and safety introduction 2 experiment blocks 50
mins 5 intro 40 experiment 5 discussion break of 15 mins between
final discussion done in 3 experiments 3 groups 3
participants/group Slide 13 Safety Considerations Experiments
Voltages nearly all experiments are made for schools according to
the prevailing standards CRT vacuum glass tube Gasses LN2 dry ice
propane Radioactive Material Rutherford source in apparatus Cloud
Chamber different sources , , Natural Radiation different sources ,
, different materials Slide 14 Project 2 Slide 15 Microcosm Gardens
Slide 16 Project 3 Slide 17 UA1 Central Detector Display Slide 18
VERY VERY VERY Preliminary Planning Now Collecting Issues Fall 2012
Clean up area in 143 Store UA1 Central Detector in 185 End 2012
Build partitioning wall Winter 2012 Install services Spring 2013
Install lab systems Slide 19 Slide 20 X-Ray Experiments X-Ray
spectra Material analysis Radiography MediPix radiation-tested by
RP Slide 21 Experiment High T C Superconductor Record the voltage
drop across a superconductor with varying temperature. Measurement
by dipping a probe with superconductor and platinum resistor into a
bath of liquid nitrogen. Handling of nitrogen by presenter.
Handling of probe by students. Slide 22 Experiment Self-built Cloud
Chamber Visualize charged tracks. dry ice for cooling IPA (C 3 H 8
O) for vapors see http://teachers/document/cloud-final.pdf Slide 23
Experiment Photoelectric Effect Measure the kinetic energy of the
electrons as a function of the frequency of the light. Determine
Plancks constant h. Measurement using a mercury lamp, filters, and
an op-amp. Hot mercury lamp. Slide 24 Experiment Rutherford
Experiment To record the direct counting rate N d of particles
scattered by a gold foil as function of the angle . To determine
the corrected counting rates N with respect to the scattering
distribution in space. To validate the Rutherfords scattering
formula Measurement of count rate. within plastic vessel emitter
handled rarely by technical staff plastic vessel evacuated (to min
50 Pa) Slide 25 Experiment Radiation Look at different materials
and their radioactivity. school experiment sources different
materials, e.g. sands, watches, dust-bags Measurement of count
rate. sources and other materials handled by presenter and
participants Slide 26 Experiment Electron Diffraction Determination
of wavelength of the electrons Verification of the de Broglies
equation Determination of lattice plane spacings of graphite
Measurement through ob- servation of ring radius. high voltage
Slide 27 Study of the deflection of electrons in a magnetic field
into a circular orbit. Determination of the magnetic field B as a
function of the acceleration potential U of the electrons at a
constant radius r. Determination of the specific charge of the
electron. Measurement through ob- servation of beam radius. nothing
specific Slide 28 Experiment Franck-Hertz To record a Franck-Hertz
curve for neon. To measure the discontinuous energy emission of
free electrons for inelastic collision. To interpret the
measurement results as representing discrete energy absorption by
neon atoms. To observe the Ne-spectral lines resulting from the
electron-collision excitation of neon atoms. To identify the
luminance phenomenon as layers with a high probability of
excitation. nothing specific
