Eric Colby Future Accelerators
<p>Mar 8, 2010 5:20 PM  see article:  Bella FAcet  Laser Plasma Accel
 
He is director of this group at SLAC ... v smart.
 
Big Physics Q's
 
P5 Report
 
Origin of Mass  (how do particles acquire mass?)
Nature of Dark Energy  (3/4 of Univ)
and Nat  of Dark Matter (1/4 of Univ)
stability of protons  (proton decay)
 
Neutrino Physics.
Unification of Forces.
HEP is high energy physics
 
discover new particles;  physics beyond the Std Model;
neutrino factories;  muon colliders
 
page 14:  benefits to society:
 
Medicine:  7000 medical linacs have treated 30M patients.
 
Also a  Neutron Therapy Facility at Loma Linda.
Making  18F  (fluorine 18) for PET scans.
 
homeland secutiry:  xraying  cargo containers.  
power transmission of superconducting material.
SLAC had the first website in the US.
 
spallation neutron sources.
 
STD MODEL:  everything is made of leptons (like electrons) and
quarks with 4 kinds of forces that influence them.
6 quarks and 6 leptons.
 
The weak force causes the neclear reactions that let the sun shine.
 
Livingstone Cuve is the Moore's Law of HEPhysics  (hi energy).
see chart below.  looks like a factor of 10 or so every 10 years.
 
Z band back scatter for airports.
sterilization.
 
Problem:  cannot just keep incrreasing length ... costs too much...
So,  need to increase energy gradient ie accel per meter (energy per meter).
But... run into materials problems.
SHORTEN the length of pulses
use better materials  (speical forms of copper).
the IRIS  is the pathway that the particles travel down.
sensitive to the coating of the tube.
 
 
 
 
 
 
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