3
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Adrian PJ, Bachmann B, Betti R, Birkel A, Heuer PV, Johnson MG, Kabadi NV, Knauer JP, Kunimune J, Li CK, Mannion OM, Petrasso RD, Regan SP, Rinderknecht HG, Stoeckl C, Séguin FH, Sorce A, Shah RC, Sutcliffe GD, Frenje JA. X-ray-imaging spectrometer (XRIS) for studies of residual kinetic energy and low-mode asymmetries in inertial confinement fusion implosions at OMEGA (invited). THE REVIEW OF SCIENTIFIC INSTRUMENTS 2022; 93:113540. [PMID: 36461452 DOI: 10.1063/5.0101655] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 09/05/2022] [Indexed: 06/17/2023]
Abstract
A system of x-ray imaging spectrometer (XRIS) has been implemented at the OMEGA Laser Facility and is capable of spatially and spectrally resolving x-ray self-emission from 5 to 40 keV. The system consists of three independent imagers with nearly orthogonal lines of sight for 3D reconstructions of the x-ray emission region. The distinct advantage of the XRIS system is its large dynamic range, which is enabled by the use of tantalum apertures with radii ranging from 50 μm to 1 mm, magnifications of 4 to 35×, and image plates with any filtration level. In addition, XRIS is capable of recording 1-100's images along a single line of sight, facilitating advanced statistical inference on the detailed structure of the x-ray emitting regions. Properties such as P0 and P2 of an implosion are measured to 1% and 10% precision, respectively. Furthermore, Te can be determined with 5% accuracy.
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Affiliation(s)
- P J Adrian
- Plasma Science and Fusion Center, MIT, Cambridge, Massachusetts 02139, USA
| | - B Bachmann
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - R Betti
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - A Birkel
- Plasma Science and Fusion Center, MIT, Cambridge, Massachusetts 02139, USA
| | - P V Heuer
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - M Gatu Johnson
- Plasma Science and Fusion Center, MIT, Cambridge, Massachusetts 02139, USA
| | - N V Kabadi
- Plasma Science and Fusion Center, MIT, Cambridge, Massachusetts 02139, USA
| | - J P Knauer
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - J Kunimune
- Plasma Science and Fusion Center, MIT, Cambridge, Massachusetts 02139, USA
| | - C K Li
- Plasma Science and Fusion Center, MIT, Cambridge, Massachusetts 02139, USA
| | - O M Mannion
- Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
| | - R D Petrasso
- Plasma Science and Fusion Center, MIT, Cambridge, Massachusetts 02139, USA
| | - S P Regan
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - H G Rinderknecht
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - C Stoeckl
- Plasma Science and Fusion Center, MIT, Cambridge, Massachusetts 02139, USA
| | - F H Séguin
- Plasma Science and Fusion Center, MIT, Cambridge, Massachusetts 02139, USA
| | - A Sorce
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - R C Shah
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - G D Sutcliffe
- Plasma Science and Fusion Center, MIT, Cambridge, Massachusetts 02139, USA
| | - J A Frenje
- Plasma Science and Fusion Center, MIT, Cambridge, Massachusetts 02139, USA
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5
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Churnetski K, Woo KM, Theobald W, Radha PB, Betti R, Gopalaswamy V, Igumenshchev IV, Ivancic ST, Michalko M, Shah RC, Stoeckl C, Thomas CA, Regan SP. Three-dimensional hot-spot x-ray emission tomography from cryogenic deuterium-tritium direct-drive implosions on OMEGA. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2022; 93:093530. [PMID: 36182469 DOI: 10.1063/5.0098977] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 08/09/2022] [Indexed: 06/16/2023]
Abstract
A three-dimensional model of the hot-spot x-ray emission has been developed and applied to the study of low-mode drive asymmetries in direct-drive inertial confinement fusion implosions on OMEGA with cryogenic deuterium-tritium targets. The steady-state model assumes an optically thin plasma and the data from four x-ray diagnostics along quasi-orthogonal lines of sight are used to obtain a tomographic reconstruction of the hot spot. A quantitative analysis of the hot-spot shape is achieved by projecting the x-ray emission into the diagnostic planes and comparing this projection to the measurements. The model was validated with radiation-hydrodynamic simulations assuming a mode-2 laser illumination perturbation resulting in an elliptically shaped hot spot, which was accurately reconstructed by the model using synthetic x-ray images. This technique was applied to experimental data from implosions in polar-direct-drive illumination geometry with a deliberate laser-drive asymmetry, and the hot-spot emission was reconstructed using spherical-harmonic modes of up to ℓ = 3. A 10% stronger drive on the equator relative to that on the poles resulted in a prolate-shaped hot spot at stagnation with a large negative A2,0 coefficient of A2,0 = -0.47 ± 0.03, directly connecting the modal contribution of the hot-spot shape with the modal contribution in laser-drive asymmetry.
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Affiliation(s)
- K Churnetski
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 146231299, USA
| | - K M Woo
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 146231299, USA
| | - W Theobald
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 146231299, USA
| | - P B Radha
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 146231299, USA
| | - R Betti
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 146231299, USA
| | - V Gopalaswamy
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 146231299, USA
| | - I V Igumenshchev
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 146231299, USA
| | - S T Ivancic
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 146231299, USA
| | - M Michalko
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 146231299, USA
| | - R C Shah
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 146231299, USA
| | - C Stoeckl
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 146231299, USA
| | - C A Thomas
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 146231299, USA
| | - S P Regan
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 146231299, USA
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6
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Zylstra AB, Kritcher AL, Hurricane OA, Callahan DA, Ralph JE, Casey DT, Pak A, Landen OL, Bachmann B, Baker KL, Berzak Hopkins L, Bhandarkar SD, Biener J, Bionta RM, Birge NW, Braun T, Briggs TM, Celliers PM, Chen H, Choate C, Clark DS, Divol L, Döppner T, Fittinghoff D, Edwards MJ, Gatu Johnson M, Gharibyan N, Haan S, Hahn KD, Hartouni E, Hinkel DE, Ho DD, Hohenberger M, Holder JP, Huang H, Izumi N, Jeet J, Jones O, Kerr SM, Khan SF, Geppert Kleinrath H, Geppert Kleinrath V, Kong C, Lamb KM, Le Pape S, Lemos NC, Lindl JD, MacGowan BJ, Mackinnon AJ, MacPhee AG, Marley EV, Meaney K, Millot M, Moore AS, Newman K, Di Nicola JMG, Nikroo A, Nora R, Patel PK, Rice NG, Rubery MS, Sater J, Schlossberg DJ, Sepke SM, Sequoia K, Shin SJ, Stadermann M, Stoupin S, Strozzi DJ, Thomas CA, Tommasini R, Trosseille C, Tubman ER, Volegov PL, Weber CR, Wild C, Woods DT, Yang ST, Young CV. Experimental achievement and signatures of ignition at the National Ignition Facility. Phys Rev E 2022; 106:025202. [PMID: 36109932 DOI: 10.1103/physreve.106.025202] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 07/06/2022] [Indexed: 06/15/2023]
Abstract
An inertial fusion implosion on the National Ignition Facility, conducted on August 8, 2021 (N210808), recently produced more than a megajoule of fusion yield and passed Lawson's criterion for ignition [Phys. Rev. Lett. 129, 075001 (2022)10.1103/PhysRevLett.129.075001]. We describe the experimental improvements that enabled N210808 and present the first experimental measurements from an igniting plasma in the laboratory. Ignition metrics like the product of hot-spot energy and pressure squared, in the absence of self-heating, increased by ∼35%, leading to record values and an enhancement from previous experiments in the hot-spot energy (∼3×), pressure (∼2×), and mass (∼2×). These results are consistent with self-heating dominating other power balance terms. The burn rate increases by an order of magnitude after peak compression, and the hot-spot conditions show clear evidence for burn propagation into the dense fuel surrounding the hot spot. These novel dynamics and thermodynamic properties have never been observed on prior inertial fusion experiments.
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Affiliation(s)
- A B Zylstra
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - A L Kritcher
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - O A Hurricane
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - D A Callahan
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - J E Ralph
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - D T Casey
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - A Pak
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - O L Landen
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - B Bachmann
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - K L Baker
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - L Berzak Hopkins
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - S D Bhandarkar
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - J Biener
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - R M Bionta
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - N W Birge
- Los Alamos National Laboratory, Mail Stop F663, Los Alamos, New Mexico 87545, USA
| | - T Braun
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - T M Briggs
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - P M Celliers
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - H Chen
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - C Choate
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - D S Clark
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - L Divol
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - T Döppner
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - D Fittinghoff
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - M J Edwards
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - M Gatu Johnson
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - N Gharibyan
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - S Haan
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - K D Hahn
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - E Hartouni
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - D E Hinkel
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - D D Ho
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - M Hohenberger
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - J P Holder
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - H Huang
- General Atomics, San Diego, California 92186, USA
| | - N Izumi
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - J Jeet
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - O Jones
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - S M Kerr
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - S F Khan
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - H Geppert Kleinrath
- Los Alamos National Laboratory, Mail Stop F663, Los Alamos, New Mexico 87545, USA
| | - V Geppert Kleinrath
- Los Alamos National Laboratory, Mail Stop F663, Los Alamos, New Mexico 87545, USA
| | - C Kong
- General Atomics, San Diego, California 92186, USA
| | - K M Lamb
- Los Alamos National Laboratory, Mail Stop F663, Los Alamos, New Mexico 87545, USA
| | - S Le Pape
- Laboratoire pour l'utilisation des Lasers Intenses chez École Polytechnique, F-91128 Palaiseau cedex, France
| | - N C Lemos
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - J D Lindl
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - B J MacGowan
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - A J Mackinnon
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - A G MacPhee
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - E V Marley
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - K Meaney
- Los Alamos National Laboratory, Mail Stop F663, Los Alamos, New Mexico 87545, USA
| | - M Millot
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - A S Moore
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - K Newman
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - J-M G Di Nicola
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - A Nikroo
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - R Nora
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - P K Patel
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - N G Rice
- General Atomics, San Diego, California 92186, USA
| | - M S Rubery
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - J Sater
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - D J Schlossberg
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - S M Sepke
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - K Sequoia
- General Atomics, San Diego, California 92186, USA
| | - S J Shin
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - M Stadermann
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - S Stoupin
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - D J Strozzi
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - C A Thomas
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - R Tommasini
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - C Trosseille
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - E R Tubman
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - P L Volegov
- Los Alamos National Laboratory, Mail Stop F663, Los Alamos, New Mexico 87545, USA
| | - C R Weber
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - C Wild
- Diamond Materials Gmbh, 79108 Freiburg, Germany
| | - D T Woods
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - S T Yang
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
| | - C V Young
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808, USA
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9
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Spiers BT, Aboushelbaya R, Feng Q, Mayr MW, Ouatu I, Paddock RW, Timmis R, Wang RHW, Norreys PA. Methods for extremely sparse-angle proton tomography. Phys Rev E 2021; 104:045201. [PMID: 34781464 DOI: 10.1103/physreve.104.045201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 08/18/2021] [Indexed: 11/07/2022]
Abstract
Proton radiography is a widely fielded diagnostic used to measure magnetic structures in plasma. The deflection of protons with multi-MeV kinetic energy by the magnetic fields is used to infer their path-integrated field strength. Here the use of tomographic methods is proposed for the first time to lift the degeneracy inherent in these path-integrated measurements, allowing full reconstruction of spatially resolved magnetic field structures in three dimensions. Two techniques are proposed which improve the performance of tomographic reconstruction algorithms in cases with severely limited numbers of available probe beams, as is the case in laser-plasma interaction experiments where the probes are created by short, high-power laser pulse irradiation of secondary foil targets. A new configuration allowing production of more proton beams from a single short laser pulse is also presented and proposed for use in tandem with these analytical advancements.
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Affiliation(s)
- B T Spiers
- Department of Physics, Atomic and Laser Physics sub-Department, University of Oxford, Clarendon Laboratory, Oxford OX1 3PU, United Kingdom
| | - R Aboushelbaya
- Department of Physics, Atomic and Laser Physics sub-Department, University of Oxford, Clarendon Laboratory, Oxford OX1 3PU, United Kingdom
| | - Q Feng
- Department of Physics, Atomic and Laser Physics sub-Department, University of Oxford, Clarendon Laboratory, Oxford OX1 3PU, United Kingdom
| | - M W Mayr
- Department of Physics, Atomic and Laser Physics sub-Department, University of Oxford, Clarendon Laboratory, Oxford OX1 3PU, United Kingdom
| | - I Ouatu
- Department of Physics, Atomic and Laser Physics sub-Department, University of Oxford, Clarendon Laboratory, Oxford OX1 3PU, United Kingdom
| | - R W Paddock
- Department of Physics, Atomic and Laser Physics sub-Department, University of Oxford, Clarendon Laboratory, Oxford OX1 3PU, United Kingdom
| | - R Timmis
- Department of Physics, Atomic and Laser Physics sub-Department, University of Oxford, Clarendon Laboratory, Oxford OX1 3PU, United Kingdom
| | - R H-W Wang
- Department of Physics, Atomic and Laser Physics sub-Department, University of Oxford, Clarendon Laboratory, Oxford OX1 3PU, United Kingdom
| | - P A Norreys
- Department of Physics, Atomic and Laser Physics sub-Department, University of Oxford, Clarendon Laboratory, Oxford OX1 3PU, United Kingdom.,Central Laser Facility, UKRI-STFC Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire OX11 0QX, United Kingdom.,John Adams Institute, Denys Wilkinson Building, Oxford OX1 3RH, United Kingdom
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