1. Med Webster QuarkNet 2013 Vanderbilt University
Fun Pictures
Med Webster
QuarkNet 2013
Vanderbilt University

2. Massive Moving Project What is this contraption?
8 July 2013
Vanderbilt Quarknet

3. Memory teaser – Who is taking that picture?
8 July 2013
Vanderbilt Quarknet

4. Our Brookhaven Visit The muon g-2 experiment “ring”
8 July 2013
Vanderbilt Quarknet

5. Many particles are like little magnets – compass needles
Try to line up with a magnetic field – like compass
Also spin – like a top – and, like a top, precess about the field when the forces (torque) twists it toward aligning with the field.
Dirac: A simple particle going around in a circle in a magnetic field should precess one revolution in making one full circle –> g = 2
8 July 2013
Vanderbilt Quarknet

6. Muons and electrons would be simple particles if they did not interact with that sea of virtual particles. Measuring the mismatch of precession time and around the circle time tells us how imperfect the muon is – how much it interacts with those virtual particles AND about possible unknown particles!
g-2 at CERN, then at BNL were great successes but can be done even better at Fermilab and it is cheaper to move than to rebuild.
8 July 2013
Vanderbilt Quarknet

7. The storage ring is sometimes referred to as a "700-ton Swiss watch" because of its high precision andenormous weight
8 July 2013
Vanderbilt Quarknet

8. To measure the mass of the neutrino!
8 July 2013
Vanderbilt Quarknet

9. One of the neutrons in tritium (proton + 2 neutrons) decays into a proton, electron, and (anti) neutrino. Lower mass, so excess energy is shared among He, electron and neutrino. Maximum electron energy is for neutrino at rest. The sum of Helium three and electron energies will be less than expected from the mass decrease if the neutrino has a rest mass.
8 July 2013
Vanderbilt Quarknet

10. Deggendorf to Karlsruhe is about 400 km.
Too big to transport by truck, so it was
moved by boat, through Austria, Slovakia, Hungary, Serbia,
Romania, Bulgaria, Ukraine, into the Black Sea, through the
Dardanelles, the Mediterranean, the Strait of Gibraltar, the
Atlantic, the English Channel, into Holland and down the Rhine.
After a 9000km sea voyage to go 400km, it still had a few km by truck
8 July 2013
Vanderbilt Quarknet