Particle Physics Quiz. EPPOG Hands on Particle Physics Masterclasses 2011
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1 Particle Physics Quiz EPPOG Hands on Particle Physics Masterclasses 2011
2 Work in groups of 2 Rules of the Game 10 multiple-choice questions + 2 master questions (+ 1 extra tiebreaker for final decision, if necessary) ~30 seconds per question Answer sheets 2 sections fill in both hand bottom part to your instructor Winning teams in each institute will receive a prize from CERN But the main aim is to have fun!
3 Question 1 Our detector shows a signal only in the hadronic calorimeter (no signal in the tracker, electromagnetic calorimeter or muon chambers). Therefore, this signal is most likely 1. pion 2. electron 3. neutron 4. photon
4 Question 2 How much of our universe is made of matter or energy, which we do not know about? % % % %
5 Question 3 How do we see quarks in a detector? 1. Not at all 2. By their characteristic spiral trajectory 3. Via jets of hadrons they generate 4. As two individual straight tracks in opposite directions
6 Question 4 The particles carrying the strong force are the 1. photons 2. gluons 3. Z- or W-bosons 4. none of the above
7 Question 5 Which was the first particle discovered which is still today believed to be elementary, i.e. not made up of further constituents? 1. electron 2. gluon 3. proton 4. photon
8 Question 6 Approximately how many times do the protons in the LHC fly around the accelerator ring in 1 second?
9 Question 7 Superconducting magnets bend the protons around the LHC ring. What do you think is the temperature of these magnets? 1. Room temperature, 300K 2. Colder than outer space, 1.9K 3. Temperature of outer space, 2.7K K
10 Question 8 Which of the following complements makes a wrong statement? The Higgsmechanism 1. explains the production of antimatter 2. explains the masses of particles 3. was invented by the British physicist Peter Higgs 4. applies everywhere in the universe
11 Question 9 Which of the following technological innovations was invented at CERN (only one)? 1. mobile phone 2. teleporter 3. mp3 format 4. World Wide Web
12 How many kilometers of the LHC are situated in Switzerland (approximately)? Question km 2. 7 km km km
13 Master Question 1 ATLAS and CMS will together produce 400MB of data every second. If written to CD (700 MB, thickness approx. 1 mm) how high a stack would this be in one year? 1. Stratosphere, m 2. Mt. Everest, m 3. Sears Tower, 527 m 4. Eiffel Tower, 276 m
14 Master Question 2 Why do tau and mu leptons decay? 1. Because your physics instructor says so 2. Because there are lighter particles they can decay to 3. Because they interact with the magnetic field of the experiment 4. Because there is so much energy produced in e.g. LEP collisions that they break apart
15 Quiz Answers
16 Question 1 Our detector shows a signal only in the hadronic calorimeter (no signal in the tracker, electromagnetic calorimeter or muon chambers). Therefore, this signal is most likely 1. pion 2. electron 3. neutron 4. photon
17 Question 2 How much of our universe is made of matter or energy, which we do not know about? % % % %
18 Question 3 How do we see quarks in a detector? 1. Not at all 2. By their characteristic spiral trajectory 3. Via jets of hadrons they generate 4. As two individual straight tracks in opposite directions
19 Question 4 The particles carrying the strong force are the 1. photons 2. gluons 3. Z- or W-bosons 4. None of the above
20 Question 5 Which was the first particle discovered which is still today believed to be elementary, i.e. not made up of further constituents? 1. electron 2. gluon 3. proton 4. photon
21 Question 6 Approximately how many times do the protons in the LHC fly around the accelerator ring in 1 second?
22 Question 7 Superconducting magnets bend the protons around the LHC ring. What do you think is the temperature of these magnets? 1. Room temperature, 300K 2. Colder than outer space, 1.9K 3. Temperature of outer space, 2.7K K
23 Question 8 Which of the following complements makes a wrong statement? The Higgsmechanism 1. explains the production of antimatter 2. explains the masses of particles 3. was invented by the British physicist Peter Higgs 4. applies everywhere in the universe
24 Question 9 Which of the following technological innovations was invented at CERN (only one)? 1. mobile phone 2. teleporter 3. mp3 format 4. World Wide Web
25 Question 10 How many kilometers of the LHC are situated in Switzerland (approximately)? 1. 3 km 2. 7 km km km
26 Master Question 1 ATLAS and CMS will together produce 400MB of data every second. If written to CD (700 MB, thickness approx. 1 mm) how high a stack would this be in one year? 1. Stratosphere, m 2. Mt. Everest, m 3. Sears Tower, 527 m 4. Eiffel Tower, 276 m
27 Master Question 2 Why do tau and mu leptons decay? 1. Because your physics instructor says so 2. Because there are lighter particles they can decay to 3. Because they interact with the magnetic field of the experiment 4. Because there is so much energy produced in e.g. LEP collisions that they break apart
28 Final Tiebreaker
29 Final Tiebreaker Question Identify the 4 tracks coming from a heavy Higgs Boson in the following event. 1 point for every right track!
30 Final Tiebreaker Answer Identify the 4 tracks coming from a heavy Higgs Boson in the following event. 1 point for every right track!
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