“Putting the Physics of Beams at the Forefront of Science”. 50+ PRL 5 Nature Science Physics Today. 25 PhDs. UCLA and USC AARD PROGRAMS. C.Joshi, W.Mori, C.Clayton(UCLA), T.Katsouleas, P.Muggli(USC). GRAND CHALLENGE in AARD.
“Putting the Physics of Beams at the Forefront of Science”
USC AARD PROGRAMS
C.Joshi, W.Mori, C.Clayton(UCLA), T.Katsouleas, P.Muggli(USC)
GRAND CHALLENGE in AARD
50 GeV e-
50 GeV e+
S. Lee et al., PRST-AB (2001)
1e17 could produce 20 positrons/e
The energy spectrum is in the
5-30 MeV range.
Possibility of generating polarized
D.Johnson et.al.To be submitted to PRL
Electron Cloud Formation
Advanced Computational Modeling Program
All AARD Schemes will eventually need access to a 10 GeV class electron/positron beam line.
PLASMA WAKEFIELD ACCELERATORBlowout regime
flattens wake, reduces energy spread
OSIRIS: (Full PIC)
500 GeV Energy Gain in 20 meters!
24GeV/m at the load
E164X August Run
12GeV Energy Gain in less than 30cm !
gradient exceeded 40 GeV/m.
Self Trapping of Plasma Electrons
3D OSIRIS SIMULATIONS
Energy Gain (GeV)
Energy Doubling of the SLAC 28.5 GeV Beam in 60 cm Possible
If successful E167 will try doubling the 50 GeV Beam
Plasma Accelerator Progress
“Accelerator Moore’s Law”
Current Energy Frontier
All these issues can be addressed with SABER
5.7GeV in 39cm
Short e+ pulses from SABER will give gradients of 5 GeV/m
Spot Size=10 micron
Plasma Focusing to Nanometer Spot Sizes
FFTB experiments have shown focusing
Strengths of giga-Gauss/cm
M.Hogan et.al. PRL 03
J.Ng et al. PRL
E162: Positron Focusing
Can we focus e+,e- SABER beams to submicron dimension using plasma lenses?
Can we design layered structures as lenses for obtaining nanometer spot sizes?
Suzhi DengAli Ghalam
Jerry HoffmanSeung Lee
Over 25 Ph.Ds granted since group’s inception.
Faculty placed at USC, UCLA, U. Michigan/Nebraska,
Florida A&M, CalState, U. Osaka
5 Student Awards including two Best Ph.D. Thesis Awards
SciDAC ~ $170 K /year Theory and Simulations
NSF ~ $150 K/year
FFTB @ SLAC, 1999 - present
SABER @ SLAC, as soon as it is built
well behaved optical elements of incredible