Artistic view of a cosmic rays shower. Credit: ASPERA/Novapix/L.Bret Source: .
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Transcript of Artistic view of a cosmic rays shower. Credit: ASPERA/Novapix/L.Bret Source: .
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Artistic view of a cosmic rays shower.Credit: ASPERA/Novapix/L.Bret
Source: http://www.aspera-eu.org/index.php?option=com_content&task=view&id=290&Itemid=196
Konrad Jende, Bulgarian Teachers Programme 2014
Cloud Chamber Workshop
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Konrad Jende, Bulgarian Teachers Programme 2014
Cloud Chamber Workshop
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Artistic view of a cosmic rays shower.Credit: ASPERA/Novapix/L.Bret
Source: http://www.aspera-eu.org/index.php?option=com_content&task=view&id=290&Itemid=196
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High energy cosmic rays striking atoms at the top of the
atmosphere give the rise to showers of particles striking the
Earth's surfaceSource: http://cds.cern.ch/record/40407
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QuickTime™ and a decompressor
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“High Energy Neutrino "Ernie" Jan 2012”
One of the two very high energy neutrinos detected in the IceCube neutrino telescope at the South Pole. This one was detected in January 2012 and deposited 1.14 PeV (petaelectronvolts) of energy into the ice. We observe the Cherenkov light generated by the resulting cascade of particles ("particle shower") using photomultiplier tubes (PMTs) deployed in 86 vertical holes drilled into the glacial ice at the South Pole using a hot water drill. The size of the blobs symbolize the amount of light each PMT measures, their color is assigned due to the first light arrival time (red is early, yellow to green is late).
The vertical "strings" of PMTs are 125m apart from each other (there is a denser core in the center of the detector). The IceCube strings go up to 2.5km deep into the ice (they are instrumented with PMTs between depths of 1.5km and 2.5km).
The IceCube South Pole Neutrino Observatory: http://icecube.wisc.eduMany more details can be found in the research article on this: http://arxiv.org/abs/1304.5356 or on this CERN Courier article (2013) or this CERN Courier Article
Source: http://www.youtube.com/watch?v=y6cmY-ibgys, Published on Apr 30, 20132013 Breakthrough of the Year by Physics World
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1eV = 1.602∙10-19 J
keV, MeV, GeV, TeV, PeV, EeV, ZeV, ...
Ernie (high-energetic neutrino-event captured with ICECUBE) with 1.1 PeV = 1.8∙10-4 J
OMG-Particle: Utah, 15.10.1991: Observation of a proton with approx. 3∙1020 eV = 50 J (0.9999999999999999999999951c)
is equivalent to a tennis ball (58g) at 150km/h
Starter
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Outline
1. Instructions
2. Build your cloud
chamber
3. Explanations
4. Observation
5. Discussion
6. Another chamber ...
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1. Instructions
Shopping List
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2. Build your cloud chamber
Shopping List
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3. Explanations
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Air Shower Simulation
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3. Die Teilchen dieser Welt und ihre Eigenschaften
I. Die endliche Lebensdauer von Teilchen - ein alltägliches Beispiel
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3. Die Teilchen dieser Welt und ihre Eigenschaften
I. Die endliche Lebensdauer von Teilchen - ein alltägliches Beispiel
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3. Die Teilchen dieser Welt und ihre Eigenschaften
I. Die endliche Lebensdauer von Teilchen - ein alltägliches Beispiel
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3. Die Teilchen dieser Welt und ihre Eigenschaften
I. Die endliche Lebensdauer von Teilchen - ein alltägliches Beispiel
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3. Die Teilchen dieser Welt und ihre Eigenschaften
I. Die endliche Lebensdauer von Teilchen - ein alltägliches Beispiel
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3. Die Teilchen dieser Welt und ihre Eigenschaften
I. Die endliche Lebensdauer von Teilchen - ein alltägliches Beispiel
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3. Die Teilchen dieser Welt und ihre Eigenschaften
I. Die endliche Lebensdauer von Teilchen - ein alltägliches Beispiel
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3. Die Teilchen dieser Welt und ihre Eigenschaften
I. Die endliche Lebensdauer von Teilchen - ein alltägliches Beispiel
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3. Die Teilchen dieser Welt und ihre Eigenschaften
I. Die endliche Lebensdauer von Teilchen - ein alltägliches Beispiel
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3. Die Teilchen dieser Welt und ihre Eigenschaften
I. Die endliche Lebensdauer von Teilchen - ein alltägliches Beispiel
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3. Die Teilchen dieser Welt und ihre Eigenschaften
I. Die endliche Lebensdauer von Teilchen - ein alltägliches Beispiel
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3. Die Teilchen dieser Welt und ihre Eigenschaften
I. Die endliche Lebensdauer von Teilchen - ein alltägliches Beispiel
![Page 24: Artistic view of a cosmic rays shower. Credit: ASPERA/Novapix/L.Bret Source: .](https://reader033.fdocuments.in/reader033/viewer/2022061518/55204d8449795902118d899f/html5/thumbnails/24.jpg)
3. Die Teilchen dieser Welt und ihre Eigenschaften
I. Die endliche Lebensdauer von Teilchen - ein alltägliches Beispiel
![Page 25: Artistic view of a cosmic rays shower. Credit: ASPERA/Novapix/L.Bret Source: .](https://reader033.fdocuments.in/reader033/viewer/2022061518/55204d8449795902118d899f/html5/thumbnails/25.jpg)
3. Die Teilchen dieser Welt und ihre Eigenschaften
I. Die endliche Lebensdauer von Teilchen - ein alltägliches Beispiel
![Page 26: Artistic view of a cosmic rays shower. Credit: ASPERA/Novapix/L.Bret Source: .](https://reader033.fdocuments.in/reader033/viewer/2022061518/55204d8449795902118d899f/html5/thumbnails/26.jpg)
3. Die Teilchen dieser Welt und ihre Eigenschaften
I. Die endliche Lebensdauer von Teilchen - ein alltägliches Beispiel
![Page 27: Artistic view of a cosmic rays shower. Credit: ASPERA/Novapix/L.Bret Source: .](https://reader033.fdocuments.in/reader033/viewer/2022061518/55204d8449795902118d899f/html5/thumbnails/27.jpg)
3. Die Teilchen dieser Welt und ihre Eigenschaften
I. Die endliche Lebensdauer von Teilchen - ein alltägliches Beispiel
![Page 28: Artistic view of a cosmic rays shower. Credit: ASPERA/Novapix/L.Bret Source: .](https://reader033.fdocuments.in/reader033/viewer/2022061518/55204d8449795902118d899f/html5/thumbnails/28.jpg)
3. Die Teilchen dieser Welt und ihre Eigenschaften
I. Die endliche Lebensdauer von Teilchen - ein alltägliches Beispiel
![Page 29: Artistic view of a cosmic rays shower. Credit: ASPERA/Novapix/L.Bret Source: .](https://reader033.fdocuments.in/reader033/viewer/2022061518/55204d8449795902118d899f/html5/thumbnails/29.jpg)
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Carl D. Anderson (1905–1991) - Anderson, Carl D. (1933). "The Positive Electron". Physical Review 43 (6): 491–494. DOI:10.1103/PhysRev.43.491.
Cloud chamber photograph of the first positron ever observed Original caption: A 63 million volt positron passing through a 6 mm lead plate and emerging as a 23 million volt positron. The length of this latter path is at least ten times greater than the possible length of a proton path of this curvature.
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Carl D. Anderson (1905–1991) - Anderson, Carl D. (1933). "The Positive Electron". Physical Review 43 (6): 491–494. DOI:10.1103/PhysRev.43.491.
Cloud chamber photograph of the first positron ever observed Original caption: A 63 million volt positron passing through a 6 mm lead plate and emerging as a 23 million volt positron. The length of this latter path is at least ten times greater than the possible length of a proton path of this curvature.
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Further experiments at
CERN
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LHCf experiment at LHC - small (length: 30cm, mass: 70kg) but effective
Source: http://cds.cern.ch/record/1518935/files/CERN-Brochure-2012-008-Eng.pdf
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QuickTime™ and a decompressor
are needed to see this picture.
Video auf Folie 10: “STS 134 Space Shuttle Endeavour AMS 02 Install timelapse”
© 2013 AMS-02. All right reserved.
Quelle: http://www.youtube.com/watch?v=vjhMZpyXxnE#t=12
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4. Observations
Tasks:
Observe with your cloud chamber.
Describe (shape, length, width, ...) which tracks you see.
Guess which particles create which tracks.
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5. Discussion
At the whiteboard we discuss your results - Follow me!
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Further Readings
C. T. R. WILSON: On an Expansion Apparatus for Making Visible the Tracks of Ionising Particles in Gases and Some Results Obtained by Its Use. Proc. R. Soc. Lond. A. 1912 87 277-292 doi:10.1098/rspa.1912.0081 (published 19 September 1912)
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Credits
Konrad Jende - [email protected]
33-R-010 +41 76 487 0246
CERN Cloud chamber workshop developed by:
D. BERTOLA , M. CIRILLI , J. FLAMMER , G. SCHLAGER , S.
SCHUH , P. SCHUNE , M. STORR
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Konrad Jende - [email protected]
33-R-010 +41 76 487 0246
6. Another chamber ...
If you are able to spend 23.000 CHF ... but have a look.