The LHC and ATLAS

Akira ShibataQueen Mary, University of London

The LHC and ATLAS

Akira ShibataQueen Mary, University of London

Atom?

Atom?

Electron

Nucleus

Atom?

Electron

Nucleus

n

np

p

neutronproton

Atom?

Electron

Nucleus

n

np

p

neutronproton

E=MC2

The heaviest known fundamental particle, the top quark is as heavy as 10

water molecules.

The heaviest known fundamental particle, the top quark is as heavy as 10

water molecules.

b

The heaviest known fundamental particle, the top quark is as heavy as 10

water molecules. top

(mass comparison to Bottom)

b

The heaviest known fundamental particle, the top quark is as heavy as 10

water molecules. top

(mass comparison to Bottom)

bW

We need a lot of energy in a very high concentration to produce them, and need to observe their decay products precisely.

We need a lot of energy in a very high concentration to produce them, and need to observe their decay products precisely.

We need a lot of energy in a very high concentration to produce them, and need to observe their decay products precisely.

We need a lot of energy in a very high concentration to produce them, and need to observe their decay products precisely.

We need a lot of energy in a very high concentration to produce them, and need to observe their decay products precisely.

We need a lot of energy in a very high concentration to produce them, and need to observe their decay products precisely.

We need a lot of energy in a very high concentration to produce them, and need to observe their decay products precisely.

We need a lot of energy in a very high concentration to produce them, and need to observe their decay products precisely.

ProtonBeam

ProtonBeam

ProtonBeam

ProtonBeam

Kinetic Energy of TGV trains squeezed into area smaller than human hair cross section.

LHC Facts

LHC FactsRadius: 4.3km

LHC FactsRadius: 4.3km

Beam Energy: 7x1012 eV

LHC FactsRadius: 4.3km

Beam Energy: 7x1012 eVBeam Speed: 0.99999999101c

LHC FactsRadius: 4.3km

Beam Energy: 7x1012 eVBeam Speed: 0.99999999101cCollisions: 800 million per sec

LHC FactsRadius: 4.3km

Beam Energy: 7x1012 eVBeam Speed: 0.99999999101cCollisions: 800 million per sec

Project Started: 1984

LHC FactsRadius: 4.3km

Beam Energy: 7x1012 eVBeam Speed: 0.99999999101cCollisions: 800 million per sec

Project Started: 1984Budget: ~3.5 CHF (£1.5 billion)

LHC FactsRadius: 4.3km

Beam Energy: 7x1012 eVBeam Speed: 0.99999999101cCollisions: 800 million per sec

Project Started: 1984Budget: ~3.5 CHF (£1.5 billion)

ATLAS Facts

LHC FactsRadius: 4.3km

Beam Energy: 7x1012 eVBeam Speed: 0.99999999101cCollisions: 800 million per sec

Project Started: 1984Budget: ~3.5 CHF (£1.5 billion)

ATLAS FactsSize: 46m long, 25m diameter

LHC FactsRadius: 4.3km

Beam Energy: 7x1012 eVBeam Speed: 0.99999999101cCollisions: 800 million per sec

Project Started: 1984Budget: ~3.5 CHF (£1.5 billion)

ATLAS FactsSize: 46m long, 25m diameter

Weight: 7000 tonnes

LHC FactsRadius: 4.3km

Beam Energy: 7x1012 eVBeam Speed: 0.99999999101cCollisions: 800 million per sec

Project Started: 1984Budget: ~3.5 CHF (£1.5 billion)

ATLAS FactsSize: 46m long, 25m diameter

Weight: 7000 tonnesCountries Involved: 34

LHC FactsRadius: 4.3km

Beam Energy: 7x1012 eVBeam Speed: 0.99999999101cCollisions: 800 million per sec

Project Started: 1984Budget: ~3.5 CHF (£1.5 billion)

ATLAS FactsSize: 46m long, 25m diameter

Weight: 7000 tonnesCountries Involved: 34

Physicists Involved: ~3000

Top quarks are produced VERY rarelySo we need to look at many collisions.

Top quarks are produced VERY rarelySo we need to look at many collisions.

Top quarks are produced VERY rarelySo we need to look at many collisions.

Top quarks are produced VERY rarelySo we need to look at many collisions.

Grid Computing

Centre

Grid Computing

Centre

LHC/ATLAS Data Facts

LHC/ATLAS Data FactsEvent Per Second:109Hz

LHC/ATLAS Data FactsEvent Per Second:109Hz

Recorded Event Rate: 100 Hz

LHC/ATLAS Data FactsEvent Per Second:109Hz

Recorded Event Rate: 100 HzData Rate: 1PB (1015Bytes) per year (109 events)

LHC/ATLAS Data FactsEvent Per Second:109Hz

Recorded Event Rate: 100 HzData Rate: 1PB (1015Bytes) per year (109 events)

Number of Machines: ???

ATLAS will start taking data this year and will continue for the next ten years. There will be

lots of discoveries to be made!

ATLAS will start taking data this year and will continue for the next ten years. There will be

lots of discoveries to be made!

We need a lot of physicists to analyse the data.

THE LHC