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Norreys PA, Ceurvorst L, Sadler JD, Spiers BT, Aboushelbaya R, Mayr MW, Paddock R, Ratan N, Savin AF, Wang RHW, Glize K, Trines RMGM, Bingham R, Hill MP, Sircombe N, Ramsay M, Allan P, Hobbs L, James S, Skidmore J, Fyrth J, Luis J, Floyd E, Brown C, Haines BM, Olson RE, Yi SA, Zylstra AB, Flippo K, Bradley PA, Peterson RR, Kline JL, Leeper RJ. Preparations for a European R&D roadmap for an inertial fusion demo reactor. Philos Trans A Math Phys Eng Sci 2021; 379:20200005. [PMID: 33280565 PMCID: PMC7741006 DOI: 10.1098/rsta.2020.0005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Accepted: 07/13/2020] [Indexed: 06/12/2023]
Abstract
A European consortium of 15 laboratories across nine nations have worked together under the EUROFusion Enabling Research grants for the past decade with three principle objectives. These are: (a) investigating obstacles to ignition on megaJoule-class laser facilities; (b) investigating novel alternative approaches to ignition, including basic studies for fast ignition (both electron and ion-driven), auxiliary heating, shock ignition, etc.; and (c) developing technologies that will be required in the future for a fusion reactor. A brief overview of these activities, presented here, along with new calculations relates the concept of auxiliary heating of inertial fusion targets, and provides possible future directions of research and development for the updated European Roadmap that is due at the end of 2020. This article is part of a discussion meeting issue 'Prospects for high gain inertial fusion energy (part 2)'.
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Affiliation(s)
- P. A. Norreys
- Department of Physics, University of Oxford, Oxford, UK
- UKRI-STFC Central Laser Facility, Didcot, UK
| | - L. Ceurvorst
- CELIA, Université de Bordeaux-CNRS-CEA, Talence, France
| | - J. D. Sadler
- Los Alamos National Laboratory, Los Alamos, NM, USA
| | - B. T. Spiers
- Department of Physics, University of Oxford, Oxford, UK
| | | | - M. W. Mayr
- Department of Physics, University of Oxford, Oxford, UK
| | - R. Paddock
- Department of Physics, University of Oxford, Oxford, UK
| | - N. Ratan
- Department of Physics, University of Oxford, Oxford, UK
| | - A. F. Savin
- Department of Physics, University of Oxford, Oxford, UK
| | - R. H. W. Wang
- Department of Physics, University of Oxford, Oxford, UK
| | - K. Glize
- UKRI-STFC Central Laser Facility, Didcot, UK
| | | | - R. Bingham
- UKRI-STFC Central Laser Facility, Didcot, UK
- University of Strathclyde, Glasgow, UK
| | - M. P. Hill
- Atomic Weapons Establishment, Aldermaston, UK
| | - N. Sircombe
- Atomic Weapons Establishment, Aldermaston, UK
| | - M. Ramsay
- Atomic Weapons Establishment, Aldermaston, UK
| | - P. Allan
- Atomic Weapons Establishment, Aldermaston, UK
| | - L. Hobbs
- Atomic Weapons Establishment, Aldermaston, UK
| | - S. James
- Atomic Weapons Establishment, Aldermaston, UK
| | - J. Skidmore
- Atomic Weapons Establishment, Aldermaston, UK
| | - J. Fyrth
- Atomic Weapons Establishment, Aldermaston, UK
| | - J. Luis
- Atomic Weapons Establishment, Aldermaston, UK
| | - E. Floyd
- Atomic Weapons Establishment, Aldermaston, UK
| | - C. Brown
- Atomic Weapons Establishment, Aldermaston, UK
| | - B. M. Haines
- Los Alamos National Laboratory, Los Alamos, NM, USA
| | - R. E. Olson
- Los Alamos National Laboratory, Los Alamos, NM, USA
| | - S. A. Yi
- Los Alamos National Laboratory, Los Alamos, NM, USA
| | | | - K. Flippo
- Los Alamos National Laboratory, Los Alamos, NM, USA
| | | | | | - J. L. Kline
- Los Alamos National Laboratory, Los Alamos, NM, USA
| | - R. J. Leeper
- Los Alamos National Laboratory, Los Alamos, NM, USA
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Spiers BT, Hill MP, Brown C, Ceurvorst L, Ratan N, Savin AF, Allan P, Floyd E, Fyrth J, Hobbs L, James S, Luis J, Ramsay M, Sircombe N, Skidmore J, Aboushelbaya R, Mayr MW, Paddock R, Wang RHW, Norreys PA. Whole-beam self-focusing in fusion-relevant plasma. Philos Trans A Math Phys Eng Sci 2021; 379:20200159. [PMID: 33280566 PMCID: PMC7741010 DOI: 10.1098/rsta.2020.0159] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Accepted: 09/03/2020] [Indexed: 06/12/2023]
Abstract
Fast ignition inertial confinement fusion requires the production of a low-density channel in plasma with density scale-lengths of several hundred microns. The channel assists in the propagation of an ultra-intense laser pulse used to generate fast electrons which form a hot spot on the side of pre-compressed fusion fuel. We present a systematic characterization of an expanding laser-produced plasma using optical interferometry, benchmarked against three-dimensional hydrodynamic simulations. Magnetic fields associated with channel formation are probed using proton radiography, and compared to magnetic field structures generated in full-scale particle-in-cell simulations. We present observations of long-lived, straight channels produced by the Habara-Kodama-Tanaka whole-beam self-focusing mechanism, overcoming a critical barrier on the path to realizing fast ignition. This article is part of a discussion meeting issue 'Prospects for high gain inertial fusion energy (part 2)'.
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Affiliation(s)
- B. T. Spiers
- Department of Physics, University of Oxford, Oxford, UK
| | - M. P. Hill
- Atomic Weapons Establishment, Aldermaston, UK
| | - C. Brown
- Atomic Weapons Establishment, Aldermaston, UK
| | - L. Ceurvorst
- CELIA, Université de Bordeaux-CNRS-CEA, Talence, France
| | - N. Ratan
- Department of Physics, University of Oxford, Oxford, UK
| | - A. F. Savin
- Department of Physics, University of Oxford, Oxford, UK
| | - P. Allan
- Atomic Weapons Establishment, Aldermaston, UK
| | - E. Floyd
- Atomic Weapons Establishment, Aldermaston, UK
| | - J. Fyrth
- Atomic Weapons Establishment, Aldermaston, UK
| | - L. Hobbs
- Atomic Weapons Establishment, Aldermaston, UK
| | - S. James
- Atomic Weapons Establishment, Aldermaston, UK
| | - J. Luis
- Atomic Weapons Establishment, Aldermaston, UK
| | - M. Ramsay
- Atomic Weapons Establishment, Aldermaston, UK
| | - N. Sircombe
- Atomic Weapons Establishment, Aldermaston, UK
| | - J. Skidmore
- Atomic Weapons Establishment, Aldermaston, UK
| | | | - M. W. Mayr
- Department of Physics, University of Oxford, Oxford, UK
| | - R. Paddock
- Department of Physics, University of Oxford, Oxford, UK
| | - R. H. W. Wang
- Department of Physics, University of Oxford, Oxford, UK
| | - P. A. Norreys
- Department of Physics, University of Oxford, Oxford, UK
- UKRI-STFC Central Laser Facility, Didcot, UK
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Aboushelbaya R, Glize K, Savin AF, Mayr M, Spiers B, Wang R, Collier J, Marklund M, Trines RMGM, Bingham R, Norreys PA. Orbital Angular Momentum Coupling in Elastic Photon-Photon Scattering. Phys Rev Lett 2019; 123:113604. [PMID: 31573265 DOI: 10.1103/physrevlett.123.113604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 05/20/2019] [Indexed: 06/10/2023]
Abstract
In this Letter, we investigate the effect of orbital angular momentum (OAM) on elastic photon-photon scattering in a vacuum for the first time. We define exact solutions to the vacuum electromagnetic wave equation which carry OAM. Using those, the expected coupling between three initial waves is derived in the framework of an effective field theory based on the Euler-Heisenberg Lagrangian and shows that OAM adds a signature to the generated photons thereby greatly improving the signal-to-noise ratio. This forms the basis for a proposed high-power laser experiment utilizing quantum optics techniques to filter the generated photons based on their OAM state.
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Affiliation(s)
- R Aboushelbaya
- Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - K Glize
- Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom
| | - A F Savin
- Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - M Mayr
- Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - B Spiers
- Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - R Wang
- Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - J Collier
- Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom
| | - M Marklund
- Department of Physics, University of Gothenburg, SE-41296 Gothenburg, Sweden
| | - R M G M Trines
- Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom
| | - R Bingham
- Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom
- Department of Physics, University of Strathclyde, Strathclyde G4 0NG, United Kingdom
| | - P A Norreys
- Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
- Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom
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Aboushelbaya R, Savin AF, Ceurvorst L, Sadler J, Norreys PA, Davies AS, Froula DH, Boyle A, Galimberti M, Oliveira P, Parry B, Katzir Y, Glize K. Single-shot frequency-resolved optical gating for retrieving the pulse shape of high energy picosecond pulses. Rev Sci Instrum 2018; 89:103509. [PMID: 30399934 DOI: 10.1063/1.5044526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 09/08/2018] [Indexed: 06/08/2023]
Abstract
Accurate characterization of laser pulses used in experiments is a crucial step to the analysis of their results. In this paper, a novel single-shot frequency-resolved optical gating (FROG) device is described, one that incorporates a dispersive element which allows it to fully characterize pulses up to 25 ps in duration with a 65 fs per pixel temporal resolution. A newly developed phase retrieval routine based on memetic algorithms is implemented and shown to circumvent the stagnation problem that often occurs with traditional FROG analysis programs when they encounter a local minimum.
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Affiliation(s)
- R Aboushelbaya
- Clarendon Laboratory, Unversity of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - A F Savin
- Clarendon Laboratory, Unversity of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - L Ceurvorst
- Clarendon Laboratory, Unversity of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - J Sadler
- Clarendon Laboratory, Unversity of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - P A Norreys
- Clarendon Laboratory, Unversity of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - A S Davies
- Physics Department and Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14636, USA
| | - D H Froula
- Physics Department and Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14636, USA
| | - A Boyle
- Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom
| | - M Galimberti
- Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom
| | - P Oliveira
- Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom
| | - B Parry
- Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom
| | - Y Katzir
- Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom
| | - K Glize
- Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom
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5
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Artemov BS, Savin AF, Vorozhbitov AI. Calculation of a billet for the stamping of half A T-Joint. Chem Petrol Eng 1977. [DOI: 10.1007/bf01152918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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