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

2. In the News

3. 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

4. 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?

5. 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

6. High Energy = Small Wavelength
The de Broglie equation

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

8. 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

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

10. LHC Dipole Magnets
Bending is provided by m 8.33 Tesla

11. LHC Dipole Magnets
The superconducting dipole magnets run at 1.9K

12. LHC RF Cavities
Acceleration is provided by superconducting RF cavities