Can the Futur of Accelerator Be Fibers?
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- Lorin Blake
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1 Can the Futur of Accelerator Be Fibers? The discovery of this particle is potentially the beginning of another road, which is to explore what lies beyond the Standard Model - Peter Higgs Gerard Mourou IZEST Ecole Polytechnique Paris France 150th Anniversary of Politecnico di Milano Gerard Mourou S.L Chin, Laval I realized there would be many applications for the laser, but it never occurred to me that we'd get such power from it! - Charles H. Townes
2 Extreme Light Road Map LMJ/NIF, 2MJ, 3B Vacuum Polarization E p =m p c 2 MJ kj XCELS IZEST C 3 TeV GeV ELI, kj.3 B E e =m 0 c 2 J MeV mj ev G. Mourou 2
3 ICAN PW Laser Output: = 40W
4 ICAN Application Roadmap It s a light bulb!
5 Laser Wake field Acceleration 40W GeV, 100 pc, 1Hz =.1 watts.
6 ICAN Application Roadmap
7 ICAN Application Roadmap
8 We need to Power a TGV TeV, 4nC, 13kHz
9 ICAN Application Roadmap Coherent Amplifying Network CAN A Revolution in Laser Architecture G. A. Mourou,et al D. Hulin and A. Galvanauskas, AIP Conference Proceedings, vol. 827, (2006).
10 The basic brick: the Yb doped Single mode Fiber
11 ICAN Application Roadmap However Need to Phase 32 J/1mJ/fiber~ Phased Fibers!! (G. Mourou patent 2005) Eidam, T. et al. Fiber chirped-pulse amplification system emitting 38 GW peak power. Optics Express 19, 255 (2010). G. A. Mourou,et al D. Hulin and A. Galvanauskas, AIP Conference Proceedings, vol. 827, (2006). ~70cm Length of a fiber ~2m Total fiber length~ km
12 CAN a New Amplifier Concept Wave front distorded By Thermal and Nonlinear Effects Wave front NOT distorded By Thermal and Nonlinear Effects
13 ICAN 42m ELT Analogy
14 Rational Behind Fiber Choice The fiber choice comes from the current thinking in the community that the highest brigthness will come from advances in fiber lasers. Modern lasers will try to eliminate bulk components as much as possible to the benefit of fibers. We can use all the low cost fibre telecom tricks: special fiber, filters, compression,couplers, etc.. Thin disk Complex systems for pump are cycling and regeneratieve amplifiers SlabThermal effect modify the beam Complex Management of pump and signal beams But
15 ICAN Application Roadmap G. Mourou, W. Brocklesby, J. Limpert, T. Tajima, Nature Photonics April 2013 «The future of Acceletaor is Fiber»
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21 Reducing the Number of fibers DPA (Division Pulse Amplification) and enhancement Cavity combination J. Limpert et al
22 Scientific and societal Applicaions
23 ICAN Validation ICAN Validation: Understanding the Fiber Laser Noise
24 ICAN Source of Phase Noise
25 ICAN Source of Phase Noise (100W)CW l/6 l/600 Thermal <10Hz Vibration 10Hz- 1Hz
26 Phase noise measurement with a quadrilateral Interferometer Only 6 pixels are necessary to reach l/60 precision.!0 4 fibers at 1kHz
27 ICAN Application Roadmap J. Bourderionnet, A. Brignon (Thales), C. Bellanger, J. Primot (ONERA) Phase processing and feedback loop 1W PM EDFA 1 2 splitters 1W PM EDFAs fiber array 2:1image relay QWLSI polar. controller Laser diode 1.55µ m 1 16 splitters lenslet array 16 4-channels PLZT phase modulators laser output far-field observatio n
28 64 CW fibers have been phased
29 Digital Laser and Smart Laser Total phase and amplitude control of each fiber : High precision on the phase <1% and amplitude <1% High spatial definition 10 6 fibers. Extreme agility ~ 1kHz
30 The ICAN-concept: a versatile digital laser Choose a far-field of your liking Fourier transform provides E and φ distribution for fibres Bessel J 1 (r)/r top-hat High Resolution Phase and Amplitude control across the out put pupil at 1KHz top-hat model is example of complete control of the laser electromagnetic field Megawatt ICF-application: randomize phase in order to minimize coherent excitation of parametric instabilities (SBS, SRS) G. Mourou 30
31 ICAN Digital Laser Smart Laser Phase processing and feedback loop 1W PM EDFA 1 2 splitters 1W PM EDFAs fiber array 2:1image relay QWLSI Detector polar. controller Laser diode 1.55µ m 1 16 splitters lenslet array 16 4-channels PLZT phase modulators laser output far-field observatio n
32 Radiation Pressure Acceleration Source of Relativistic Proton Light Sail Relativistic Proton
33 Scientific and Societal Applications Applications electron-positron Collider Proton Collider (Tevatron, LHC) Neutron source (SNS, ESS) Neutrino Source (SNS, ESS) Radioactive Ion Beam (FRIB, Eurisol) Accelerator Driven System (Ch-ADS,MYRRHA) Muon collider Free Electron laser at 10kHz Proton Therapy Nuclear Pharmacology Higgs Factory
34 Cost of a PW Cost based on 7 /watt for a 50J/pulse at 10kHz Average power 500kW Wall plug efficiency: 30% Factor 50% for the grating efficiency A factor of 3 is taken to go from diode cost to the full system cost System cost ~ 70M
35 What is next: ICAN-B? Building a demonstrator What is next: ICAN-B? Building a demonstrator 1. Average Power MW (leap of 10^4 ) 2. Excellent wall plug to laser efficiency 30-40% (leap of 10^2) 3. Rep. Rate 10^4 (leap of 10^4) 4. Total Phase and Amplitude Control Demonstration of the main Applications
36 Thank You!
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