The projects that have been chosen so far include 36 people,13 teams. So far, So Good, expect 2/3 get >=B+

Transcription

1 PHYS 342 Modern Physics Project Discussion III Today's Projects for Discussion: a) Study a particle accelerators Large Hadron Collider (LHC) b) Search for Dark Matter The projects that have been chosen so far include 36 people,13 teams. 1. Stevie Bastin, Stjepan Kraljic, Zack Rowe, Gravitational wave/gravitons 2. Lifu Wang, Weiyuan Deng, and Yufeng Zhang, Modern Experiment to Test Special Relativity 3.Uladzimir Kasacheuski, Jonathan Brown, and Vishal Patel, interview researchers at IUPUI 4. Zongying Xu, Zheng Huang, and Jiani Xie, Blackbody Radiation 5. Chuanyi Chen, Zihao Fu, and Lingbin Meng, Introduction to General Relativity 6. Hongkun Zhu, Guiming Chen, and Jiawen Wang, First gravitational wave observation 7. Aaron, Joseph, and Will, atomic physics explanation of the helium laser 8. Daulton Eaton, Robert McKay, and Guy Wiss, Monte Carlo Simulation Method for the Schrodinger equation 9. Tianyang Wu, Haizhen Xie, and Bingcheng Zhou, Neutrino physics 10. Josiah Alstott, Thomas Freestone, and Ross Wallgren, Atomic clock 11. Chase Howard and Alex Canner, Gravitational lensing 12. Kailiang Chen, Zhong Jin, Peiming Zhu, Quantum Information 13. Ryan, Particle Acclerator LHC So far, So Good, expect 2/3 get >=B+ You must /give me your electronic version of.ppt or report (.doc,.pdf) before Apr.15 to secure a presentation time slot. Bottom Line: We already have 413 points, only ~300 points left. You need at least 420 points in the end to safely pass. 1

2 Large Hadron Collider (LHC) Large Hadron Collider (LHC) Projects: You need to write a short review about the history of LHC and the problems that LHC will address. You also need to introduce the basic structure and instrumentation of LHC. You can also introduce the recent discoveries found by LHC and the future plan of LHC

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5 Big Bang The beginning of the universe 5

6 Problems that LHC will address Higgs Boson Projects for Discussion The God Particle: The Higgs Boson Use water to understand the Higgs Boson upyw Today's Projects for Discussion: a) Study a Particle accelerators Large Hadron Collider (LHC) b) Search for Dark Matter c) Project selected by you! 6

7 Unknown Matter in the Universe In Ursa Major constellation. Distance is 30 million light years. For comparison, distance from Earth to the galactic center is a factor of ~1000 times less. 30 millions light years Horsehead Nebula. Pink background is hydrogen emission from IC434 emission. Search for Dark Matter Question: Is the mass in the universe all observable through emission or absorption of electromagnetic radiation? Dark Matter...is matter that does not shine or absorb light, and has therefore escaped direct detection by electromagnetic transducers like telescopes, radio antennas, x-ray satellites... There is strong experimental evidence that there is more dark matter than luminous matter in the universe! Search for Dark Matter Projects: You need to write a short review about the search for dark matter. You need to introduce the evident of existing dark matter in the universe, the possible candidates for dark matter, and how physicist detect dark matter in ongoing projects. 7

8 Examples of Rotation Curves DM Evidence I Rotation Curves for Our Galaxy The Correct Way to Think about Our Galaxy Gravitational Microlensing 8

9 DM Evidence II Gravitational Lensing in Clusters of Galaxies Microlensing Targets Large Magellanic Cloud Small Magellanic Cloud Possible Dark-Matter Candidates DIRECT DETECTION Dark matter elastically scatters off nuclei DM Nuclear recoils detected by phonons, scintillation, ionization,, e, 9

10 Neutrinos as Nonbaryonic Dark Matter Other Types of Nonbaryonic Dark Matter XENON Dark Matter Detector About 100 neutrinos per cubic cm, throughout space. Superkamiokande, an Example of a Neutrino Observatory Mass is about 0.05 ev = 1 / 10,000,000 mass of electron, although some uncertainty. Neutrinos in the Universe have nearly as much mass as all of the stars! Large Hadron Collider at CERN X-ray Evidence for Dark Matter in Clusters of Galaxies Need enough gravity to keep the X-ray gas from boiling off into intergalactic space. The LHC will search for supersymmetric and other new subatomic particles. 10

11 Dark Matter Dark Matter The most powerful machine: for people love experiments 11