Particle Physics Quiz

Masterclasses 2008

D. Barney, K. Cecire, S. Schuh, P. Steinbach

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!

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

Náš detektor ukazuje signál len v hadrónovom kalorimetri (žiaden signál v dráhovom detektore, elektromagn. kalorimetri, ani v miónových detektoroch). Preto tento signál s najväčšou pravdepodobnosťou pochádza od

A. a NEUTRONB. a PIONC. an ELECTROND. a PHOTON

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 ?

A. Stratosphere, 20 000m

B. Mt. Everest, 8 850m

C. Sears Tower, 527m

D. Eiffel Tower, 276m

Question 3A. Not at allB. By their characteristic spiral

trajectoryC. Via “jets” of hadrons they generateD. As two individual straight tracks in

opposite directionsHow do we see “quarks” in a detector?

Ako vidíme “kvarky” v detektore ?

A. Vôbec ich nevidímeB. Podľa ich charakteristickej

špirálovitej trajektórieC. Cez “jety” hadrónov, ktoré kvarky

generujúD. Ako dve individuálne priame dráhy

v opačných smeroch

Question 4

The CMS detector has the weight of how many Eiffel Towers?

Koľkokrát je CMS detektor ťažší ako Eiffelova veža?

A. 1

B. 2

C. 3

D. 5

Question 5

The particles carrying the strong force are the

Častice, ktoré sú nosičmi (mediátormi) silnej interakcie, sa nazývajú

A. Photons

B. Gluons

C. Z- or W-bosons

D. None of these

A. Fotóny

B. Gluóny

C. Z alebo W bozóny

D. Nejako inak

Question 6

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

Približne koľkokrát preletia protóny v LHC okolo kruhu urýchľovača za 1 sekundu ?

A. 1

B. 100

C. 10 000

D. 1 000 000

Question 7A. Room temperature, 300KB. Colder than outer space, 1.9KC. Temperature of outer space,

2.7KD. 163.2KSuperconducting magnets bend

the protons around the LHC ring. What do you think is the temperature of these magnets?

Supravodivé magnety stáčajú dráhu protónov okolo prstenca LHC. Aká je podľa vás teplota týchto magnetov ?

A. Izbová teplota, 300KB. Chladnejšia než teplota

vesmíru, 1.9KC. Teplota vesmíru, 2.7KD. 163.2K

Question 8

If you would take the energy of all the protons in the LHC beam and put their energy into the speed of Mike’s 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 rýchlosť by ste dosiahli ?

A. 250 km/h

B. 1000 km/h

C. 1700 km/h

D. 10000 km/h

Question 9

A. Space plane

B. We make huge amounts of anti-matter (few grams)

C. Secret lab

D. None of the above

Which of the items below featured in Dan Brown’s book (Angels&Demons) is true?

Ktorý z uvedených bodov spomínaných v knihe Dana Browna (Angels&Demons) je pravdivý ?

A. Vesmírne lietadloB. Vyrábame obrovské množstvá

antihmoty (pár gramov)C. Tajné laboratóriumD. Žiaden z nich

Question 10

How much of our universe is made of matter or energy, which we do not know about?

Aká časť nášho vesmíru je tvorená hmotou alebo energiou, ktorú nepoznáme ?

A. 0.001%

B. 10%

C. 45%

D. 96%

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 ťažkého Higgsovho bozónu v zrážke na obrázku.

1 bod za každú správne nájdenú dráhu!

Tiebreaker Question 2

How many registered scientists and engineers were using CERN in 2007?

Koľko bolo v CERNe registrovaných vedcov a inžinierov v roku 2007?

Quiz Answers

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

A. a NEUTRONB. a PIONC. an ELECTROND. a PHOTON

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?

A. Stratosphere, 20 000m

B. Mt. Everest, 8 850m

C. Sears Tower, 527m

D. Eiffel Tower, 276m

Question 3A. Not at allB. By their characteristic spiral

trajectoryC. Via “jets” of hadrons they generateD. As two individual straight tracks in

opposite directions

How do we see “quarks” in a detector?

Question 4

The CMS detector has the weight of how many Eiffel Towers?

A. 1

B. 2

C. 3

D. 5

Question 5

The particles carrying the strong force are the

A. Photons

B. Gluons

C. Z- or W-bosons

D. None of these

Question 6

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

A. 1

B. 100

C. 10 000

D. 1 000 000

Question 7A. Room temperature, 300KB. Colder than outer space, 1.9KC. Temperature of outer space,

2.7KD. 163.2K

Superconducting magnets bend the protons around the LHC ring. What do you think is the temperature of these magnets?

Question 8

If you would take the energy of all the protons in the LHC beam and put their energy into the speed of Mike’s Subaru, guess what it would it be?

A. 250 km/h

B. 1000 km/h

C. 1700 km/h

D. 10000 km/h

Question 9

A. Space plane

B. We make huge amounts of anti-matter (few grams)

C. Secret lab

D. None of the aboveWhich of the items below featured in Dan Brown’s book (Angels&Demons) is true?

Question 10

How much of our universe is made of matter or energy, which we do not know about?

A. 0.001%

B. 10%

C. 45%

D. 96%

Tiebreaker Question 1Identify the 4 tracks coming from a heavy Higgs Boson in the

following event. 1 point for every right track!

Tiebreaker Question 2

How many registered scientists and engineers were using CERN in 2007?

9133