Download the Power Point Presentation for Large Hadron collidor
•World’s largest and highest-energy particle accelerator.
•Built by the European Organization for Nuclear
To study high-energy physics & large family of new particles predicted by supersymmetry
What is HADRON ?
A particle made of quarks held together by strong forces(as e.m. force).
•Two types: mesons(made of one quark and one antiquark) and baryons(made of three quarks).
•Protons and neutrons are the best known baryons.
Report and Abstract for Large Hadron collidor
•Contained in a circular tunnel, with a circumference of 27 km, at a depth ranging from 50 to 175 meters underground.
•Crosses the border between Switzerland and France at four points.
•Tunnel contains two adjacent parallel beam pipes containing a proton beam, travelling in opposite direction around the ring.
•1232 dipole magnets are used to keep the beams on circular path, while an additional 392 quadrupole magnets are used to keep the beam focused so that the chances of interaction be max.
•Approx. 96 tonnes of liquid helium needed to keep the magnets at the operating temperature of 1.9 K(-271.25C).
•Six detectors have been constructed at LHC. Two of them, ATLAS and Compact Muon Solenoid(CMS) are large, general purpose particle detectors.
•ALICE, LHCb, TOTEM, and LHCf are for very specialized research.
•ATLAS consists of a series of concentric cylinders around the interaction point where the proton beams from LHC collide.
•Divided into four major parts:
1.Inner Detector: track charged particles by detecting their interaction with material at discrete points, revealing detailed information about the types of particles and its momentum.
2.Calorimeters: measure the energy from particles by absorbing it.
3.Muon spectrometer: an extremely large tracking system, around the calorimeter. Its tremendous size is required to accurately measure the momentum of muons, which penetrate other elements of the detector.
4.Magnet systems: ATLAS uses two large superconducting magnet system to bend charged particles to measure their momenta. The inner solenoid produces a high magnetic field of 2T which is enough to curve even high energy particles to get the momentum. Its uniform direction and strength allow measurement to be made very precisely.