• At CERN, the European Organization for Nuclear
Research, physicists and engineers use the world's
largest and most complex scientific equipment to
study the basic components of matter - the
• The particles are made to collide together at close
to the speed of light. The process gives the
physicists clues about how the particles interact.
Equipment at CERN
• The instruments used at CERN are particle
accelerators and detectors.
• Accelerators give the particles energy. Two beams
of particles called hadrons — these are either
protons or lead ions — will be sent hurtling around
the ring in opposite directions. They'll travel close to
the speed of light at very high energies, and are
encouraged to collide.
• Detectors observe and record the results of these
The Super Proton Synchrotron (SPS)
ACCELERATORThe Compact Muon Solenoid (CMS)
Why do we need CERN?
• To answer some of the mysteries of the Universe.
Physicists think that everything began around 13.7
billion years ago with the Big Bang.
• To shed some light onto those things we don't yet
understand about our Universe, it helps to look back to
that first dramatic moment, to understand what
ingredients went into making the world as we know it.
• The high-energy collisions produced by the LHC will
re-create the conditions that occurred in the moments
just after the Big Bang.
• Physicists hope that the collisions will create particles,
even if only for a tiny instant, that have never been
observed: they are the missing links of modern physics.
The Large Hadron Collider (LHC)
• The Large Hadron Collider (LHC) is the world’s
largest and most powerful particle accelerator.
• The LHC consists of a 27-kilometre ring of
superconducting magnets with a number of
accelerating structures to boost the energy of the
particles along the way.
Benefits of CERN (1)
• The collisions at Cern will benefit our understanding
and the scientific profession itself
• Will we be fried by cosmic rays? Sucked into LHC-
produced black holes? Hoovered up by wormholes to be
dumped in a parallel Universe in another time? No, no
• The LHC can do nothing that nature hasn't done
already, and we've survived it. It isn't expected to
produce any black holes, and even if it does, they'll be
extremely tiny, disappear in an instant, or be
Benefits of CERN (2)
• These "technological spin-offs", of course, are still of
great use in themselves. Working on something like the
LHC provides engineers and physicists with skills that
nobody else in the world has: many of the cryogenic
experts responsible for cooling the entire system to -
271C (-456F) - creating as they go "the world's largest
fridge" - have already moved on to work at
the ITER fusion reactor project in France, which is
hoping to solve the world's energy needs. Also, the
particle detectors have made today's PET scanners,
which aid cancer treatment, while CERN's computer
network is a feat of technology in itself, prepared at it is
to handle 15 million gigabytes of data per year.
• In conclusion, CERN is a financially viable project,
which has created amazing opportunities for
• Without CERN, we would be carrying on living our
lives without solving some of the fundamental
mysteries about our world that we live in.
• CERN has provided us with PET scanners, something
that provides many people with essential aid for