Hunting the Higgs Boson at the CERN Large Hadron Collider Kenneth Johns University of Arizona

In the News

Goals of Particle Physics We aim to determine The fundamental building blocks in nature and the interactions between them The nature of space and time

Questions in Particle Physics Where do the particles get their mass from? Where has all the anti-matter gone? What is dark matter made of? What else is out there?

Building Blocks of Matter CELLS Twenty per mm DNA Five hundred thousand per mm Nucleus Five hundred billion per mm Quarks More than one million billion per mm Extra magnification? x 2 thousand x 25 thousand x 1 million Electron microscope Particle Accelerators 2 fm < 1 am 50 μm 2 nm Microscope

High Energy = Small Wavelength The de Broglie equation

Particle Physics Experiments Require Accelerator Particle detectors Lots of collaborators Lots of computing

LHC (Large Hadron Collider) CERN is located outside Geneva, Switzerland The ring circumference is 27 km The energy of the LHC is now 8 TeV = 4 TeV + 4 TeV 8

LHC (Large Hadron Collider) The experiments are located 100m underground French Alps Lake Geneva Geneva French Jura Mts ALICE LHCb ATLAS CMS 9

LHC Dipole Magnets Bending is provided by 1232 15-m dipoles @ 8.33 Tesla

LHC Dipole Magnets The superconducting dipole magnets run at 1.9K

LHC RF Cavities Acceleration is provided by superconducting RF cavities