Historical Review on the Plasma Based Particle Accelerators Congratulation for opening “Plasma and...
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Historical Review on the Plasma Based Particle Accelerators Congratulation for opening “Plasma and Space Science Center” Yasushi Nishida Lunghwa University of Science and Technology, Taiwan Utsunomiya University, Japan
Historical Review on the Plasma Based Particle Accelerators Congratulation for opening “Plasma and Space Science Center” Yasushi Nishida Lunghwa University
Historical Review on the Plasma Based Particle Accelerators
Congratulation for opening Plasma and Space Science Center Yasushi
Nishida Lunghwa University of Science and Technology, Taiwan
Utsunomiya University, Japan
Slide 2
Introduction Principle of Plasma Based High Energy Particle
Accelerators Brief History Depending on Experimental Results and
Future Tasks 4 Summary and Future Laser Requirements Dr. Koyama
AIST Prof. Uesakathe University of Tokyo Prof. Kitagawa GPI Dr.
Kando JAEA Dr. Nemoto CRIEPI with many thanks for materials
from
Slide 3
1. Introduction
Slide 4
History of High Energy Accelerators July, 2008 Electron
synchrotron Synchrocyclotron Electron linac TRISTAN Electron
synchrotron Cyclotron Electrostatic accelerator Rectifier type
accelerator YEAR BEAM ENERGY (eV)
Slide 5
50-100
Slide 6
10 6 10 9 10 8 10 7 10 12 10 11 10 10 cm 1 cm 1 mm 100 10 1 0.1
Plasma Limit Breakdown Limit Surface Heating Limit Laser
Acceleration SLAC Microwave Limit Acceleration Field (V/m) Wave
length
Slide 7
2. Principle of Plasma Based High Energy Particle
Accelerators
Slide 8
Mechanism of Plasma Based Accelerator 3. 1992 Beat wave method
was proved by Kitagawa et al. (93 RAL & UCLA) 2. 1988 Plasma
Wake Field method was proved by Rosenzweig et al. (ANL), (90 KEK
& Utsunomiya) 1. 1983 VpxB Acceleration mechanism was found by
Nishida et al.
Slide 9
4. 1993 Laser wakefield was proved by Nakajima, Ogata, Nishida,
et al.. (1) Laser Wakefield (Dorchies et al. 1999) 5. Capillary
method by B. Cross et al.,1999
Slide 10
3. Brief History Depending on Experimental Results and Future
Tasks
Slide 11
Brief history (1) 1.Concept on plasma-laser based high energy
particle accelerator was proposed by Tajima & Dawson in 1979.
2.The key idea was to excite large amplitude electron plasma waves
by using short pulse laser (LWA) in high density plasma. 3.However,
there was no such a laser in that era, and beat wave could excite
the plasma waves. 4.In 1983 Nishida et al. succeeded to find new
acceleration mechanism, later called VpxB acceleration. This was
the first and new mechanism observed of high energy acceleration
phenomena.
Slide 12
Brief history (2) 5. In 1986, P.Chen et al proposed to use
electron bunch to excite the plasma wave (PWA) and this idea was
confirmed by Rosenzweig et al.(1988).In 1990, Nakanishi, Ogata,
Nishida et al. observed 2-order of magnitude larger energy. 6. In
1992, Kitagawa et al. succeeded in electron acceleration by using
BWA (Beat wave Wake field Accel.) method. 7. In 1995, Nakajima et
al. succeeded to accelerate electrons up to 100 MeV by using LWA
(Laser Wake field Accel.) method. 8. In 1988, Mine, Mourou et al.
invented CPA (Chirped Pulse Amplification) method for short pulse
laser amplification and was put in practical use around 1995.
Slide 13
Slide 14
J.R. Rosenzweig et al., PRL (1988)
Slide 15
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Slide 18
AIST Monoenergetic beam was met in narrow divergence angle.
Electron Energy Spectrum including quasi-monoenergetic beam
K.Koyama (AIST, Japan)
Slide 19
Results (C.Murphy, IC/RAL) LOA (France) : Charge in [150-190]
MeV, 500 200 pC. Monoenergetic Electron Spectrum Observed in
LWA
Slide 20
Stable electron beam generation with external static magnetic
field Experimental Setup The total charge of the accelerated
electrons B = 0 B = 0.2 T Electron beam profile 60mm 9 sequential
shot images of the electron beam An excellent stability of the
electron parameters has been demonstrated. Sep.18, 2007 ; the
University of Tokyo
Slide 21
Accelerator is realized ! Monochromatic energy bunch are
excited by using Lasers.
Slide 22
Slide 23
SLAC & UCLA LOA
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Laser guiding
Slide 25
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Slide 27
Ultra-Intense Laser is illuminated into a glass capillary,
which accelerates plasma electrons to 100 MeV Y.Kitagawa-Osaka 10
mm0mm A Laser guide Glass capillary Electrons /MeV/str 10 8 9 11 10
12 10 13 10 14 110100 Energy [MeV] 10 mm long 1.2 mm Detection
limit Bump PRL Vol.92, No.20 (2004)
Slide 28
Subjects for Developing the Laser Driven Electron Accelerator
Electron injection (standing-wave, sharp density gradient) Bunch
diagnostics (bunch length, charge, energy spectrum) Laser guide
(capillary, plasma channel) Acceleration scheme, Scaling law
(wakefield, beatwave) Application of the laser-plasma accelerator
(pump and probe) Laser system for the laser-plasma accelerator
(stability, rep-rate, cost) KEK, ILE-Osaka U.Tokyo, AIST, GPI,
CRIEPI U.Tokyo, AISTJAEA, U.Tokyo, AIST The UK-Japan High Energy
Density Science Workshop, Tokyo, 18-19, Sep. 2007 K.Koyama,
AIST
Slide 29
SLAC, UCLA, USC
Slide 30
4. Summary and Future Laser Requirements Accelerator concepts
are reviewed. Laser particle acceleration has been demonstrated.
Energy gains at 1 MeV to 200 MeV E-field of 1 GeV/m to 1000 GeV/m
GeV energy is expected, although it is realized in PWA
Quasi-monoenergetic electron accelerations have been achieved in
wide parameter range of self-injection wakefield accelerator. Good
pointing stability of electron bunch has been accomplished by
applying axial magnetic field. For further higher energy
accelerators, the requirements are extreme: Luminosity : 1000
bunches/s with 1 nC/bunch For 1 GeV source 1 PW to 30 PW with kHz
range At higher energy, say, 1 TeV source, one need 1 MJ/s or
more!! By using PWA, it can reach 1 TeV particles at present, but
you need large linear accelerator for accelerating the driver
electron bunches.