Particle Physics Quiz

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Particle Physics Quiz

• Masterclasses 2008
• D. Barney, K. Cecire,
• S. Schuh, P. Steinbach

2
Rules of the Game

• 10 multiple-choice questions 1 tie-breaker
• 30 seconds per question
• Work in groups of 2
• Answer sheets
• 2 sections
• fill in both
• hand bottom part to your instructor
• Winning teams in each institute will receive a
  prize from CERN
• Overall winning team of the day will receive an
  additional prize from CERN
• But the main aim is to have fun!

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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 likelyNáš
detektor ukazuje signál len v hadrónovom
kalorimetri (žiaden signál v dráhovom detektore,
elektromagn. kalorimetri, ani v miónových
detektoroch). Preto tento signál s najväcšou
pravdepodobnostou pochádza od

1. a NEUTRON
2. a PION
3. an ELECTRON
4. a PHOTON

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Question 2
ATLAS and CMS will together produce 400MB of data
every second. If written to CD how high a stack
would this be in one year?ATLAS a CMS spolu
vyprodukujú 400MB dát za sekundu. Ak by sa
zapisovali na CD a CD ukladali na seba, akú
vysokú vežu by ste vytvorili za 1 rok ?

1. Stratosphere, 20 000m
2. Mt. Everest, 8 850m
3. Sears Tower, 527m
4. Eiffel Tower, 276m

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Question 3

• Not at all
• By their characteristic spiral trajectory
• Via jets of hadrons they generate
• As two individual straight tracks in opposite
  directions

How do we see quarks in a detector? Ako
vidíme kvarky v detektore ?

1. Vôbec ich nevidíme
2. Podla ich charakteristickej špirálovitej
   trajektórie
3. Cez jety hadrónov, ktoré kvarky generujú
4. Ako dve individuálne priame dráhy v opacných
   smeroch

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Question 4
The CMS detector has the weight of how many
Eiffel Towers?Kolkokrát je CMS detektor tažší
ako Eiffelova veža?

1. 1
2. 2
3. 3
4. 5

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Question 5
The particles carrying the strong force are
theCastice, ktoré sú nosicmi (mediátormi)
silnej interakcie, sa nazývajú

1. Photons
2. Gluons
3. Z- or W-bosons
4. None of these

1. Fotóny
2. Gluóny
3. Z alebo W bozóny
4. Nejako inak

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Question 6
Approximately how many times do the protons in
the LHC fly around the accelerator ring in 1
second?Približne kolkokrát preletia protóny v
LHC okolo kruhu urýchlovaca za 1 sekundu ?

1. 1
2. 100
3. 10 000
4. 1 000 000

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Question 7

1. Room temperature, 300K
2. Colder than outer space, 1.9K
3. Temperature of outer space, 2.7K
4. 163.2K

Superconducting magnets bend the protons around
the LHC ring. What do you think is the
temperature of these magnets?Supravodivé
magnety stácajú dráhu protónov okolo prstenca
LHC. Aká je podla vás teplota týchto magnetov ?

1. Izbová teplota, 300K
2. Chladnejšia než teplota vesmíru, 1.9K
3. Teplota vesmíru, 2.7K
4. 163.2K

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Question 8
If you would take the energy of all the protons
in the LHC beam and put their energy into the
speed of Mikes Subaru, guess what it would it
be?Keby ste zobrali energiu všetkých protónov
vo zväzku na LHC a použili ju na urýchlenie
Mike-ovho Subaru, akú rýchlost by ste dosiahli ?

1. 250 km/h
2. 1000 km/h
3. 1700 km/h
4. 10000 km/h

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Question 9

1. Space plane
2. We make huge amounts of anti-matter (few grams)
3. Secret lab
4. None of the above

Which of the items below featured in Dan Browns
book (AngelsDemons) is true?Ktorý z uvedených
bodov spomínaných v knihe Dana Browna
(AngelsDemons) je pravdivý ?

1. Vesmírne lietadlo
2. Vyrábame obrovské množstvá antihmoty (pár gramov)
3. Tajné laboratórium
4. Žiaden z nich

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Question 10
How much of our universe is made of matter or
energy, which we do not know about?Aká cast
nášho vesmíru je tvorená hmotou alebo energiou,
ktorú nepoznáme ?

1. 0.001
2. 10
3. 45
4. 96

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Tiebreaker Question 1Identify the 4 tracks
coming from a heavy Higgs Boson in the following
event. 1 point for every right track!Nájdite 4
dráhy rozpadových produktov tažkého Higgsovho
bozónu v zrážke na obrázku.1 bod za každú
správne nájdenú dráhu!
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Tiebreaker Question 2How many registered
scientists and engineers were using CERN in 2007?
Kolko bolo v CERNe registrovaných vedcov a
inžinierov v roku 2007?
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Quiz Answers
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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. a NEUTRON
2. a PION
3. an ELECTRON
4. a PHOTON

17
Question 2
ATLAS and CMS will together produce 400MB of data
every second. If written to CD how high a stack
would this be in one year?

1. Stratosphere, 20 000m
2. Mt. Everest, 8 850m
3. Sears Tower, 527m
4. Eiffel Tower, 276m

18
Question 3

• Not at all
• By their characteristic spiral trajectory
• Via jets of hadrons they generate
• As two individual straight tracks in opposite
  directions

How do we see quarks in a detector?
19
Question 4
The CMS detector has the weight of how many
Eiffel Towers?

1. 1
2. 2
3. 3
4. 5

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Question 5
The particles carrying the strong force are the

1. Photons
2. Gluons
3. Z- or W-bosons
4. None of these

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Question 6
Approximately how many times do the protons in
the LHC fly around the accelerator ring in 1
second?

1. 1
2. 100
3. 10 000
4. 1 000 000

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Question 7

1. Room temperature, 300K
2. Colder than outer space, 1.9K
3. Temperature of outer space, 2.7K
4. 163.2K

Superconducting magnets bend the protons around
the LHC ring. What do you think is the
temperature of these magnets?
23
Question 8
If you would take the energy of all the protons
in the LHC beam and put their energy into the
speed of Mikes Subaru, guess what it would it
be?

1. 250 km/h
2. 1000 km/h
3. 1700 km/h
4. 10000 km/h

24
Question 9

1. Space plane
2. We make huge amounts of anti-matter (few grams)
3. Secret lab
4. None of the above

Which of the items below featured in Dan Browns
book (AngelsDemons) is true?
25
Question 10
How much of our universe is made of matter or
energy, which we do not know about?

1. 0.001
2. 10
3. 45
4. 96

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Tiebreaker Question 1Identify the 4 tracks
coming from a heavy Higgs Boson in the following
event. 1 point for every right track!
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Tiebreaker Question 2How many registered
scientists and engineers were using CERN in 2007?
9133