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3. Overview of recent physics results from MAST

Author

Kirk, A, Adamek, J, Akers, RJ, Allan, S, Appel, L, Lucini, F Arese, Barnes, M, Barrett, T, Ayed, N Ben, Boeglin, W, Bradley, J, Browning, P K, Brunner, J, Cahyna, P, Carr, M, Casson, F, Cecconello, M, Challis, C, Chapman, IT, Chapman, S, Conroy, S, Conway, N, Cooper, WA, Cox, M, Crocker, N, Crowley, B, Cardnell, S, Chorley, J, Cunningham, G, Danilov, A, Darrow, D, Dendy, R, Dickinson, D, Dorland, W, Dudson, B, Easy, L, Elmore, S, Evans, M, Farley, T, Fedorczak, N, Field, A, Fitzgerald, I, Fox, M, Freethy, S, Garzotti, L, Ghim, YC, Gi, K, Gorelenkova, M, Gracias, W, Gurl, C, Guttenfelder, W, Ham, C, Harting, D, Havlickova, E, Hawkes, N, Hender, T, Henderson, S, Hillesheim, J, Hnat, B, Horacek, J, Howard, J, Howell, D, Dunai, D, Fishpool, G, Gibson, K, Harrison, J, Highcock, E, Huang, B, Inomoto, M, Imazawa, R, Jones, O, Kadowaki, K, Kaye, S, Keeling, D, Kocan, M, Kogan, L, Komm, M, Lai, W, Leddy, J, Leggate, H, Imada, K, Klimek, I, Hollocombe, J, Lipschultz, B, Lisgo, S, Liu, YQ, Lloyd, B, Lomanowski, B, Lukin, V, Maddison, G, Madsen, J, Mailloux, J, Martin, R, McArdle, G, Lupelli, I, McClements, K, McMillan, B, Meakins, A, Meyer, H, Michael, C, Militello, F, Milnes, J, Motojima, G, Muir, D, Naylor, G, Nielsen, A, O'Brien, M, O'Mullane, M, Olsen, J, Omotani, J, Ono, Y, Pamela, S, Morris, AW, O'Gorman, T, Pangione, L, Parra, F, Patel, A, Peebles, W, Perez, R, Pinches, S, Piron, L, Price, M, Reinke, M, Ricci, P, Riva, F, Roach, C, Romanelli, M, Ryan, D, Saarelma, S, Saveliev, A, Scannell, R, Schekochihin, A, Sharapov, S, Sharples, R, Shevchenko, V, Shinohara, K, Silburn, S, Simpson, J, Stanier, A, Storrs, J, Summers, H, Takase, Y, Tamain, P, Tanabe, H, Tanaka, H, Tani, K, Taylor, D, Thomas, D, Thomas-Davies, N, Thornton, A, Turnyanskiy, M, Valovic, M, Vann, R, Van Wyk, F, Walkden, N, Watanabe, T, Wilson, H, Wischmeier, M, Yamada, T, Young, J, Zoletnik, S, Team, the MAST, and Team, the EUROfusion MST1

Subjects
Physics - Plasma Physics
Abstract

New results from MAST are presented that focus on validating models in order to extrapolate to future devices. Measurements during start-up experiments have shown how the bulk ion temperature rise scales with the square of the reconnecting field. During the current ramp up models are not able to correctly predict the current diffusion. Experiments have been performed looking at edge and core turbulence. At the edge detailed studies have revealed how filament characteristic are responsible for determining the near and far SOL density profiles. In the core the intrinsic rotation and electron scale turbulence have been measured. The role that the fast ion gradient has on redistributing fast ions through fishbone modes has led to a redesign of the neutral beam injector on MAST Upgrade. In H-mode the turbulence at the pedestal top has been shown to be consistent with being due to electron temperature gradient modes. A reconnection process appears to occur during ELMs and the number of filaments released determines the power profile at the divertor. Resonant magnetic perturbations can mitigate ELMs provided the edge peeling response is maximised and the core kink response minimised. The mitigation of intrinsic error fields with toroidal mode number n>1 has been shown to be important for plasma performance., Comment: 34 pages, 10 figures. This is an author-created, un-copyedited version of an article submitted for publication in Nuclear Fusion. IoP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it

Published
2016
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4. Theory of Thomson scattering in inhomogeneous media

Author

Kozlowski, P. M., Crowley, B. J. B., Gericke, D. O., Regan, S. P., and Gregori, G.

Subjects
Physics - Plasma Physics, Astrophysics - Instrumentation and Methods for Astrophysics, Condensed Matter - Statistical Mechanics, Physics - Optics
Abstract

Thomson scattering of laser light is one of the most fundamental diagnostics of plasma density, temperature and magnetic fields. It relies on the assumption that the properties in the probed volume are homogeneous and constant during the probing time. On the other hand, laboratory plasmas are seldom uniform and homogeneous on the temporal and spatial dimensions over which data is collected. This is partic- ularly true for laser-produced high-energy-density matter, which often exhibits steep gradients in temperature, density and pressure, on a scale determined by the laser focus. Here, we discuss the modification of the cross section for Thomson scattering in fully-ionized media exhibiting steep spatial inhomogeneities and/or fast temporal fluctuations. We show that the predicted Thomson scattering spectra are greatly altered compared to the uniform case, and may even lead to violations of detailed balance. Therefore, careful interpretation of the spectra is necessary for spatially or temporally inhomogeneous systems., Comment: 18 pages, 4 figures. Publication with corrected referencing for submitted article: http://www.nature.com/articles/srep24283

Published
2016
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5. Control of power, torque, and instability drive using in-shot variable neutral beam energy in tokamaks

Author

Pace, DC, Collins, CS, Crowley, B, Grierson, BA, Heidbrink, WW, Pawley, C, Rauch, J, Scoville, JT, Van Zeeland, MA, and Zhu, YB

Subjects
Affordable and Clean Energy, neutral beam, tokamak, Alfven wave, plasma control, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Fluids & Plasmas
Abstract

A first-ever demonstration of controlling power and torque injection through time evolution of neutral beam energy has been achieved in recent experiments at the DIII-D tokamak (Luxon 2002 Nucl. Fusion 42 614). Pre-programmed waveforms for the neutral beam energy produce power and torque inputs that can be separately and continuously controlled. Previously, these inputs were tailored using on/off modulation of neutral beams resulting in large perturbations (e.g. power swings of over 1 MW). The new method includes, importantly for experiments, the ability to maintain a fixed injected power while varying the torque. In another case, different beam energy waveforms (in the same plasma conditions) produce significant changes in the observed spectrum of beam ion-driven instabilities. Measurements of beam ion loss show that one energy waveform results in the complete avoidance of coherent losses due to Alfvénic instabilities. This new method of neutral beam operation is intended for further application in a variety of DIII-D experiments including those concerned with high-performance steady state scenarios, fast particle effects, and transport in the low torque regime. Developing this capability would provide similar benefits and improved plasma control for other magnetic confinement fusion facilities.

Published
2017

6. Control of power, torque, and instability drive using in-shot variable neutral beam energy in tokamaks

Author

Diii-D Team, T, Pace, DC, Collins, CS, Crowley, B, Grierson, BA, Heidbrink, WW, Pawley, C, Rauch, J, Scoville, JT, Van Zeeland, MA, and Zhu, YB

Subjects
neutral beam, tokamak, Alfven wave, plasma control, Fluids & Plasmas, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract

A first-ever demonstration of controlling power and torque injection through time evolution of neutral beam energy has been achieved in recent experiments at the DIII-D tokamak (Luxon 2002 Nucl. Fusion 42 614). Pre-programmed waveforms for the neutral beam energy produce power and torque inputs that can be separately and continuously controlled. Previously, these inputs were tailored using on/off modulation of neutral beams resulting in large perturbations (e.g. power swings of over 1 MW). The new method includes, importantly for experiments, the ability to maintain a fixed injected power while varying the torque. In another case, different beam energy waveforms (in the same plasma conditions) produce significant changes in the observed spectrum of beam ion-driven instabilities. Measurements of beam ion loss show that one energy waveform results in the complete avoidance of coherent losses due to Alfvénic instabilities. This new method of neutral beam operation is intended for further application in a variety of DIII-D experiments including those concerned with high-performance steady state scenarios, fast particle effects, and transport in the low torque regime. Developing this capability would provide similar benefits and improved plasma control for other magnetic confinement fusion facilities.

Published
2017

7. Electron and ion heating characteristics during magnetic reconnection in MAST

Author

Tanabe, H., Yamada, T., Watanabe, T., Gi, K., Kadowaki, K., Inomoto, M., Imazawa, R., Gryaznevich, M., Michael, C., Crowley, B., Conway, N., Scannell, R., Harrison, J., Fitzgerald, I., Meakins, A., Hawkes, N., team, the MAST, Cheng, C. Z., and Ono, Y.

Subjects
Physics - Plasma Physics
Abstract

Local electron and ion heating characteristics during merging reconnection startup on the MAST spherical tokamak have been revealed for the first time using a 130 channel YAG-TS system and a new 32 chord ion Doppler tomography diagnostic. 2D local profile measurement of $T_e$, $n_e$ and $T_i$ detect highly localized electron heating at the X point and bulk ion heating downstream. For the push merging experiment under high guide field condition, thick layer of closed flux surface formed by reconnected field sustains the heating profile for more than electron and ion energy relaxation time $\tau^E_{ei}\sim4-10$ms, both heating profiles finally form triple peak structure at the X point and downstream. Toroidal guide field mostly contributes the formation of peaked electron heating profile at the X point. The localized heating increases with higher guide field, while bulk downstream ion heating is unaffected by the change in the guide field under MAST conditions ($B_t>3B_{rec}$)., Comment: The article has been submitted to the journal of "Physical Review Letters" on 05/May/2015 (Code number: LE15049 (5 pages, 5 figures))

Published
2015
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9. Measurements and modelling of fast-ion redistribution due to MHD instabilities in the Mega-Amp Spherical Tokamak

Author

Jones, O M, Michael, C A, Cecconello, M, Wodniak, I, McClements, K G, Keeling, D L, Challis, C D, Turnyanskiy, M, Meakins, A J, Conway, N J, Crowley, B J, Akers, R J, and team, MAST

Subjects
Physics - Plasma Physics
Abstract

The results of a comprehensive investigation into the effects of various MHD modes on the NBI-generated fast-ion population in MAST plasmas are reported. Fast-ion redistribution due to low-frequency (20-50 kHz) chirping energetic particle modes known as fishbones, as well as the long-lived internal kink mode, is observed with the Fast-Ion Deuterium Alpha (FIDA) spectrometer and radially-scanning collimated neutron camera. In addition, strongly-driven chirping toroidicity-induced Alfven eigenmodes are observed to cause fast-ion redistribution, as are sawteeth and large edge-localised modes. In each case, the modes affect fast ions in a region of real space governed by the eigenmode structure and principal toroidal mode number. Modelling using the global transport analysis code TRANSP, with ad hoc anomalous diffusion introduced, reproduces the coarsest features of the affected fast-ion distribution in the presence of energetic-particle-driven modes, but the spectrally and spatially resolved FIDA measurements suggest that the distribution exhibits structure on a finer scale than is accounted for by this model., Comment: 28 pages, 18 figures

Published
2014

10. Continuum Lowering -- A New Perspective

Author

Crowley, B. J. B.

Subjects
Physics - Plasma Physics
Abstract

What is meant by continuum lowering and ionization potential depression (IPD) in a Coulomb system depends upon precisely what question is being asked. It is shown that equilibrium (equation-of-state) phenomena and non-equilibrium dynamical processes like photoionization are characterised by different values of the IPD. In the former, the ionization potential of an atom embedded in matter is the difference in the free energy of the many-body system between states of thermodynamic equilibrium differing by the ionization state of just one atom. Typically, this energy is less than that required to ionize the same atom in vacuo. Probably, the best known example of such an IPD is that of Stewart and Pyatt (SP). However, it is a common misconception that this formula should apply directly to the energy of a photon causing photoionization, since this is a local adiabatic process that occurs in the absence of a response from the surrounding plasma. To achieve the prescribed final equilibrium state, additional energy, in the form of heat and work, is transferred between the atom and its surroundings. This additional relaxation energy is sufficient to explain the discrepancy between recent spectroscopic measurements of IPD in dense plasmas and the predictions of the SP formula. This paper provides a detailed account of an analytical approach to calculating thermodynamic and spectroscopic (adiabatic) IPDs in multicomponent Coulomb systems of arbitrary coupling strength. The ramifications are carefully examined in order to elucidate the roles of the various IPD forms. A formulation in terms of free energy leads to an analytical equation of state (EoS) that is thermodynamically self-consistent, provided that the bound and free electrons are dynamically separable. Of the various proposed formulae, the Spectroscopic (adiabatic) IPD gives the most consistent agreement with spectroscopic measurements., Comment: 80 pages 3 figures. S1. Expanded intro incl: summary of experiments; outline of ionization process & basis of local non-equilibrium hypothesis; revised para on connection with microfield. S2. New para on connection with self-energy; outline of basic continuum-lowering model used to illustrate the new ideas. S3. Rearranged text. S6. Revised & retitled. References: expanded. Minor changes throughout

Published
2013
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11. Fast-Ion Deuterium Alpha spectroscopic observations of the effects of fishbones in the Mega-Ampere Spherical Tokamak

Author

Jones, O. M., Michael, C. A., McClements, K. G., Conway, N. J., Crowley, B., Akers, R. J., Lake, R. J., and Pinches, S. D.

Subjects
Physics - Plasma Physics
Abstract

Using the recently-installed Fast-Ion Deuterium Alpha (FIDA) spectrometer, the effects of low-frequency (20-50 kHz) chirping energetic particle modes with toroidal mode number n \geq 1 on the fast-ion population in MAST plasmas are considered. Results from the FIDA diagnostic are presented and discussed in the light of the present theoretical understanding of these modes, known as fishbones, in plasmas with reversed shear. Measurements of the fast-ion population reveal strong redistribution of fast ions in both real and velocity space as a result of the fishbones. Time-resolved measurements throughout the evolution of a fishbone show radial redistribution of fast ions with energies up to 95% of the primary beam injection energy. Correlations between changes in the FIDA signal and the peak time derivative of the magnetic field perturbation are observed in a limited range of operating scenarios. The transient reduction in signal caused by a fishbone may in some cases reach 50% of the signal intensity before mode onset., Comment: 19 pages, 12 figures. Submitted to Plasma Phys. Control. Fusion

Published
2013
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12. Observation of inhibited electron-ion coupling in strongly heated graphite

Author

White, T. G., Vorberger, J., Brown, C. R. D., Crowley, B. J. B., Davis, P., Glenzer, S. H., Harris, J. W. O., Hochhaus, D. C., Pape, S. Le, Ma, T., Murphy, C. D., Neumayer, P., Pattison, L. K., Richardson, S., Gericke, D. O., and Gregori, G.

Subjects
Physics - Plasma Physics, Condensed Matter - Materials Science, J.2
Abstract

Creating non-equilibrium states of matter with highly unequal electron and lattice temperatures allows unsurpassed insight into the dynamic coupling between electrons and ions through time-resolved energy relaxation measurements. Recent studies on low-temperature laser-heated graphite suggest a complex energy exchange when compared to other materials. To avoid problems related to surface preparation, crystal quality and poor understanding of the energy deposition and transport mechanisms, we apply a different energy deposition mechanism, via laser-accelerated protons, to isochorically and non-radiatively heat macroscopic graphite samples up to temperatures close to the melting threshold. Using time-resolved x ray diffraction, we show clear evidence of a very small electron-ion energy transfer, yielding approximately three times longer relaxation times than previously reported. This is indicative of the existence of an energy transfer bottleneck in non-equilibrium warm dense matter., Comment: 5 Pages

Published
2013
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13. Dual view FIDA measurements on MAST

Author

Michael, C. A., Conway, N., Crowley, B., Jones, O., Heidbrink, W. W., Pinches, S., Braeken, E., Akers, R., Challis, C., Turnyanskiy, M., Patel, A., Muir, D., Gaffka, R., and Bailey, S.

Subjects
Physics - Plasma Physics
Abstract

A Fast Ion Deuterium Alpha (FIDA) spectrometer was installed on MAST to measure radially resolved information about the fast ion density and its distribution in energy and pitch angle. Toroidally and vertically-directed collection lenses are employed, to detect both passing and trapped particle dynamics, and reference views are installed to subtract the background. This background is found to contain a substantial amount of passive FIDA emission driven by edge neutrals, and to depend delicately on viewing geometry. Results are compared with theoretical expectations based on the codes NUBEAM (for fast ion distributions) and FIDASIM. Calibrating via the measured beam emission peaks, the toroidal FIDA signal profile agrees with classical simulations in MHD quiescent discharges where the neutron rate is also classical. Long-lived modes (LLM) and chirping modes decrease the core FIDA signal significantly, and the profile can be matched closely to simulations using anomalous diffusive transport; a spatially uniform diffusion coefficient is sufficient for chirping modes, while a core localized diffusion is better for a LLM. Analysis of a discharge with chirping mode activity shows a dramatic drop in the core FIDA signal and rapid increase in the edge passive signal at the onset of the burst indicating a very rapid redistribution towards the edge. Vertical viewing measurements show a discrepancy with simulations at higher Doppler shifts when the neutron rate is classical, which, combined with the fact that the toroidal signals agree, means that the difference must be occurring for pitch angles near the trapped-passing boundary. Further evidence of an anomalous transport mechanism for these particles is provided by the fact that an increase of beam power does not increase the higher energy vertical FIDA signals, while the toroidal signals do increase., Comment: submitted to PPCF

Published
2013

14. Dual view FIDA measurements on MAST

Author

Michael, CA, Conway, N, Crowley, B, Jones, O, Heidbrink, WW, Pinches, S, Braeken, E, Akers, R, Challis, C, Turnyanskiy, M, Patel, A, Muir, D, Gaffka, R, and Bailey, S

Subjects
physics.plasm-ph, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Other Physical Sciences, Fluids & Plasmas
Abstract

A fast-ion deuterium alpha (FIDA) spectrometer was installed on MAST to measure radially resolved information about the fast-ion density and its distribution in energy and pitch angle. Toroidally and vertically directed collection lenses are employed, to detect both passing and trapped particle dynamics, and reference views are installed to subtract the background. This background is found to contain a substantial amount of passive FIDA emission driven by edge neutrals, and to depend delicately on viewing geometry. Results are compared with theoretical expectations based on the codes NUBEAM (for fast-ion distributions) and FIDASIM. Calibrating via the measured beam emission peaks, the toroidal FIDA signal profile agrees with classical simulations in magnetohydrodynamic quiescent discharges where the neutron rate is also classical. Long-lived modes (LLMs) and chirping modes decrease the core FIDA signal significantly, and the profile can be matched closely to simulations using anomalous diffusive transport; a spatially uniform diffusion coefficient is sufficient for chirping modes, while a core localized diffusion is better for a LLM. Analysis of a discharge with chirping mode activity shows a dramatic drop in the core FIDA signal and rapid increase in the edge passive signal at the onset of the burst indicating a very rapid redistribution towards the edge. Vertical-viewing measurements show a discrepancy with simulations at higher Doppler shifts when the neutron rate is classical, which, combined with the fact that the toroidal signals agree, means that the difference must be occurring for pitch angles near the trapped-passing boundary, although uncertainties in the background subtraction, which are difficult to assess, may contribute to this. Further evidence of an anomalous transport mechanism for these particles is provided by the fact that an increase of beam power does not increase the higher energy vertical FIDA signals, while the toroidal signals do increase. © 2013 IOP Publishing Ltd.

Published
2013

21. DIII-D research advancing the physics basis for optimizing the tokamak approach to fusion energy

Author

Fenstermacher, M.E., Abbate, J., Abe, S., Abrams, T., Adams, M., Adamson, B., Aiba, N., Akiyama, T., Aleynikov, P., Allen, E., Allen, S., Anand, H., Anderson, J., Andrew, Y., Andrews, T., Appelt, D., Arbon, R., Ashikawa, N., Ashourvan, A., Aslin, M., Asnis, Y., Austin, M., Ayala, D., Bak, J., Bandyopadhyay, I., Banerjee, S., Barada, K., Bardoczi, L., Barr, J., Bass, E., Battaglia, D., Battey, A., Baumgartner, W., Baylor, L., Beckers, J., Beidler, M., Belli, E., Berkery, J., Bernard, T., Bertelli, N., Beurskens, M., Bielajew, R., Bilgili, S., Biswas, B., Blondel, S., Boedo, J., Bogatu, I., Boivin, R., Bolzonella, T., Bongard, M., Bonnin, X., Bonoli, P., Bonotto, M., Bortolon, A., Bose, S., Bosviel, N., Bouwmans, S., Boyer, M., Boyes, W., Bradley, L., Brambila, R., Brennan, D., Bringuier, S., Brodsky, L., Brookman, M., Brooks, J., Brower, D., Brown, G., Brown, W., Burke, M., Burrell, K., Butler, K., Buttery, R., Bykov, I., Byrne, P., Cacheris, A., Callahan, K., Callen, J., Campbell, G., Candy, J., Canik, J., Cano-Megias, P., Cao, N., Carayannopoulos, L., Carlstrom, T., Carrig, W., Carter, T., Cary, W., Casali, L., Cengher, M., Cespedes Paz, G., Chaban, R., Chan, V., Chapman, B., Char, I., Chattopadhyay, A., Chen, R., Chen, J., Chen, X., Chen, M., Chen, Z., Choi, M., Choi, W., Choi, G., Chousal, L., Chrobak, C., Chrystal, C., Chung, Y., Churchill, R., Cianciosa, M., Clark, J., Clement, M., Coda, S., Cole, A., Collins, C., Conlin, W., Cooper, A., Cordell, J., Coriton, B., Cote, T., Cothran, J., Creely, A., Crocker, N., Crowe, C., Crowley, B., Crowley, T., Cruz-Zabala, D., Cummings, D., Curie, M., Curreli, D., Dal Molin, A., Dannels, B., Dautt-Silva, A., Davda, K., De Tommasi, G., de Vries, P., Degrandchamp, G., Degrassie, J., Demers, D., Denk, S., Depasquale, S., Deshazer, E., Diallo, A., Diem, S., Dimits, A., Ding, R., Ding, S., Ding, W., Do, T., Doane, J., Dong, G., Donovan, D., Drake, J., Drews, W., Drobny, J., Du, X., Du, H., Duarte, V., Dudt, D., Dunn, C., Duran, J., Dvorak, A., Effenberg, F., Eidietis, N., Elder, D., Eldon, D., Ellis, R., Elwasif, W., Ennis, D., Erickson, K., Ernst, D., Fasciana, M., Fedorov, D., Feibush, E., Ferraro, N., Ferreira, J., Ferron, J., Fimognari, P., Finkenthal, D., Fitzpatrick, R., Fox, P., Fox, W., Frassinetti, L., Frerichs, H., Frye, H., Fu, Y., Gage, K., Galdon Quiroga, J., Gallo, A., Gao, Q., Garcia, A., Garcia Munoz, M., Garnier, D., Garofalo, A., Gattuso, A., Geng, D., Gentle, K., Ghosh, D., Giacomelli, L., Gibson, S., Gilson, E., Giroud, C., Glass, F., Glasser, A., Glibert, D., Gohil, P., Gomez, R., Gomez, S., Gong, X., Gonzales, E., Goodman, A., Gorelov, Y., Graber, V., Granetz, R., Gray, T., Green, D., Greenfield, C., Greenwald, M., Grierson, B., Groebner, R., Grosnickle, W., Groth, M., Grunloh, H., Gu, S., Guo, W., Guo, H., Gupta, P., Guterl, J., Guttenfelder, W., Guzman, T., Haar, S., Hager, R., Hahn, S., Halfmoon, M., Hall, T., Hallatschek, K., Halpern, F., Hammett, G., Han, H., Hansen, E., Hansen, C., Hansink, M., Hanson, J., Hanson, M., Hao, G., Harris, A., Harvey, R., Haskey, S., Hassan, E., Hassanein, A., Hatch, D., Hawryluk, R., Hayashi, W., Heidbrink, W., Herfindal, J., Hicok, J., Hill, D., Hinson, E., Holcomb, C., Holland, L., Holland, C., Hollmann, E., Hollocombe, J., Holm, A., Holmes, I., Holtrop, K., Honda, M., Hong, R., Hood, R., Horton, A., Horvath, L., Hosokawa, M., Houshmandyar, S., Howard, N., Howell, E., Hoyt, D., Hu, W., Hu, Y., Hu, Q., Huang, J., Huang, Y., Hughes, J., Human, T., Humphreys, D., Huynh, P., Hyatt, A., Ibanez, C., Ibarra, L., Icasas, R., Ida, K., Igochine, V., In, Y., Inoue, S., Isayama, A., Izacard, O., Izzo, V., Jackson, A., Jacobsen, G., Jaervinen, A., Jalalvand, A., Janhunen, J., Jardin, S., Jarleblad, H., Jeon, Y., Ji, H., Jian, X., Joffrin, E., Johansen, A., Johnson, C., Johnson, T., Jones, C., Joseph, I., Jubas, D., Junge, B., Kalb, W., Kalling, R., Kamath, C., Kang, J., Kaplan, D., Kaptanoglu, A., Kasdorf, S., Kates-Harbeck, J., Kazantzidis, P., Kellman, A., Kellman, D., Kessel, C., Khumthong, K., Kim, E., Kim, H., Kim, J., Kim, S., Kim, K., Kim, C., Kimura, W., King, M., King, J., Kinsey, J., Kirk, A., Kiyan, B., Kleiner, A., Klevarova, V., Knapp, R., Knolker, M., Ko, W., Kobayashi, T., Koch, E., Kochan, M., Koel, B., Koepke, M., Kohn, A., Kolasinski, R., Kolemen, E., Kostadinova, E., Kostuk, M., Kramer, G., Kriete, D., Kripner, L., Kubota, S., Kulchar, J., Kwon, K., La Haye, R., Laggner, F., Lan, H., Lantsov, R., Lao, L., Lasa Esquisabel, A., Lasnier, C., Lau, C., Leard, B., Lee, J., Lee, R., Lee, M., Lee, Y., Lee, C., Lee, S., Lehnen, M., Leonard, A., Leppink, E., Lesher, M., Lestz, J., Leuer, J., Leuthold, N., Li, X., Li, K., Li, E., Li, G., Li, L., Li, Z., Li, J., Li, Y., Lin, Z., Lin, D., Liu, X., Liu, J., Liu, Y., Liu, T., Liu, C., Liu, Z., Liu, D., Liu, A., Loarte-Prieto, A., Lodestro, L., Logan, N., Lohr, J., Lombardo, B., Lore, J., Luan, Q., Luce, T., Luda Di Cortemiglia, T., Luhmann, N., Lunsford, R., Luo, Z., Lvovskiy, A., Lyons, B., Ma, X., Madruga, M., Madsen, B., Maggi, C., Maheshwari, K., Mail, A., Mailloux, J., Maingi, R., Major, M., Makowski, M., Manchanda, R., Marini, C., Marinoni, A., Maris, A., Markovic, T., Marrelli, L., Martin, E., Mateja, J., Matsunaga, G., Maurizio, R., Mauzey, P., Mauzey, D., McArdle, G., McClenaghan, J., McCollam, K., McDevitt, C., McKay, K., McKee, G., McLean, A., Mehta, V., Meier, E., Menard, J., Meneghini, O., Merlo, G., Messer, S., Meyer, W., Michael, C., Michoski, C., Milne, P., Minet, G., Misleh, A., Mitrishkin, Y., Moeller, C., Montes, K., Morales, M., Mordijck, S., Moreau, D., Morosohk, S., Morris, P., Morton, L., Moser, A., Moyer, R., Moynihan, C., Mrazkova, T., Mueller, D., Munaretto, S., Munoz Burgos, J., Murphy, C., Murphy, K., Muscatello, C., Myers, C., Nagy, A., Nandipati, G., Navarro, M., Nave, F., Navratil, G., Nazikian, R., Neff, A., Neilson, G., Neiser, T., Neiswanger, W., Nelson, D., Nelson, A., Nespoli, F., Nguyen, R., Nguyen, L., Nguyen, X., Nichols, J., Nocente, M., Nogami, S., Noraky, S., Norausky, N., Nornberg, M., Nygren, R., Odstrcil, T., Ogas, D., Ogorman, T., Ohdachi, S., Ohtani, Y., Okabayashi, M., Okamoto, M., Olavson, L., Olofsson, E., Omullane, M., Oneill, R., Orlov, D., Orvis, W., Osborne, T., Pace, D., Paganini Canal, G., Pajares Martinez, A., Palacios, L., Pan, C., Pan, Q., Pandit, R., Pandya, M., Pankin, A., Park, Y., Park, J., Parker, S., Parks, P., Parsons, M., Patel, B., Pawley, C., Paz-Soldan, C., Peebles, W., Pelton, S., Perillo, R., Petty, C., Peysson, Y., Pierce, D., Pigarov, A., Pigatto, L., Piglowski, D., Pinches, S., Pinsker, R., Piovesan, P., Piper, N., Pironti, A., Pitts, R., Pizzo, J., Plank, U., Podesta, M., Poli, E., Poli, F., Ponce, D., Popovic, Z., Porkolab, M., Porter, G., Powers, C., Powers, S., Prater, R., Pratt, Q., Pusztai, I., Qian, J., Qin, X., Ra, O., Rafiq, T., Raines, T., Raman, R., Rauch, J., Raymond, A., Rea, C., Reich, M., Reiman, A., Reinhold, S., Reinke, M., Reksoatmodjo, 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A., Kellman, D., Kessel, C., Khumthong, K., Kim, E., Kim, H., Kim, J., Kim, S., Kim, K., Kim, C., Kimura, W., King, M., King, J., Kinsey, J., Kirk, A., Kiyan, B., Kleiner, A., Klevarova, V., Knapp, R., Knolker, M., Ko, W., Kobayashi, T., Koch, E., Kochan, M., Koel, B., Koepke, M., Kohn, A., Kolasinski, R., Kolemen, E., Kostadinova, E., Kostuk, M., Kramer, G., Kriete, D., Kripner, L., Kubota, S., Kulchar, J., Kwon, K., La Haye, R., Laggner, F., Lan, H., Lantsov, R., Lao, L., Lasa Esquisabel, A., Lasnier, C., Lau, C., Leard, B., Lee, J., Lee, R., Lee, M., Lee, Y., Lee, C., Lee, S., Lehnen, M., Leonard, A., Leppink, E., Lesher, M., Lestz, J., Leuer, J., Leuthold, N., Li, X., Li, K., Li, E., Li, G., Li, L., Li, Z., Li, J., Li, Y., Lin, Z., Lin, D., Liu, X., Liu, J., Liu, Y., Liu, T., Liu, C., Liu, Z., Liu, D., Liu, A., Loarte-Prieto, A., Lodestro, L., Logan, N., Lohr, J., Lombardo, B., Lore, J., Luan, Q., Luce, T., Luda Di Cortemiglia, T., Luhmann, N., Lunsford, R., Luo, Z., Lvovskiy, A., 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J., Nocente, M., Nogami, S., Noraky, S., Norausky, N., Nornberg, M., Nygren, R., Odstrcil, T., Ogas, D., Ogorman, T., Ohdachi, S., Ohtani, Y., Okabayashi, M., Okamoto, M., Olavson, L., Olofsson, E., Omullane, M., Oneill, R., Orlov, D., Orvis, W., Osborne, T., Pace, D., Paganini Canal, G., Pajares Martinez, A., Palacios, L., Pan, C., Pan, Q., Pandit, R., Pandya, M., Pankin, A., Park, Y., Park, J., Parker, S., Parks, P., Parsons, M., Patel, B., Pawley, C., Paz-Soldan, C., Peebles, W., Pelton, S., Perillo, R., Petty, C., Peysson, Y., Pierce, D., Pigarov, A., Pigatto, L., Piglowski, D., Pinches, S., Pinsker, R., Piovesan, P., Piper, N., Pironti, A., Pitts, R., Pizzo, J., Plank, U., Podesta, M., Poli, E., Poli, F., Ponce, D., Popovic, Z., Porkolab, M., Porter, G., Powers, C., Powers, S., Prater, R., Pratt, Q., Pusztai, I., Qian, J., Qin, X., Ra, O., Rafiq, T., Raines, T., Raman, R., Rauch, J., Raymond, A., Rea, C., Reich, M., Reiman, A., Reinhold, S., Reinke, M., Reksoatmodjo, R., Ren, Q., 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Abstract

DIII-D physics research addresses critical challenges for the operation of ITER and the next generation of fusion energy devices. This is done through a focus on innovations to provide solutions for high performance long pulse operation, coupled with fundamental plasma physics understanding and model validation, to drive scenario development by integrating high performance core and boundary plasmas. Substantial increases in off-axis current drive efficiency from an innovative top launch system for EC power, and in pressure broadening for Alfven eigenmode control from a co-/counter-I p steerable off-axis neutral beam, all improve the prospects for optimization of future long pulse/steady state high performance tokamak operation. Fundamental studies into the modes that drive the evolution of the pedestal pressure profile and electron vs ion heat flux validate predictive models of pedestal recovery after ELMs. Understanding the physics mechanisms of ELM control and density pumpout by 3D magnetic perturbation fields leads to confident predictions for ITER and future devices. Validated modeling of high-Z shattered pellet injection for disruption mitigation, runaway electron dissipation, and techniques for disruption prediction and avoidance including machine learning, give confidence in handling disruptivity for future devices. For the non-nuclear phase of ITER, two actuators are identified to lower the L-H threshold power in hydrogen plasmas. With this physics understanding and suite of capabilities, a high poloidal beta optimized-core scenario with an internal transport barrier that projects nearly to Q = 10 in ITER at ∼8 MA was coupled to a detached divertor, and a near super H-mode optimized-pedestal scenario with co-I p beam injection was coupled to a radiative divertor. The hybrid core scenario was achieved directly, without the need for anomalous current diffusion, using off-axis current drive actuators. Also, a controller to assess proximity to stability limit

Published
2022

22. DIII-D research advancing the physics basis for optimizing the tokamak approach to fusion energy

Author

Fenstermacher, M, Abbate, J, Abe, S, Abrams, T, Adams, M, Adamson, B, Aiba, N, Akiyama, T, Aleynikov, P, Allen, E, Allen, S, Anand, H, Anderson, J, Andrew, Y, Andrews, T, Appelt, D, Arbon, R, Ashikawa, N, Ashourvan, A, Aslin, M, Asnis, Y, Austin, M, Ayala, D, Bak, J, Bandyopadhyay, I, Banerjee, S, Barada, K, Bardoczi, L, Barr, J, Bass, E, Battaglia, D, Battey, A, Baumgartner, W, Baylor, L, Beckers, J, Beidler, M, Belli, E, Berkery, J, Bernard, T, Bertelli, N, Beurskens, M, Bielajew, R, Bilgili, S, Biswas, B, Blondel, S, Boedo, J, Bogatu, I, Boivin, R, Bolzonella, T, Bongard, M, Bonnin, X, Bonoli, P, Bonotto, M, Bortolon, A, Bose, S, Bosviel, N, Bouwmans, S, Boyer, M, Boyes, W, Bradley, L, Brambila, R, Brennan, D, Bringuier, S, Brodsky, L, Brookman, M, Brooks, J, Brower, D, Brown, G, Brown, W, Burke, M, Burrell, K, Butler, K, Buttery, R, Bykov, I, Byrne, P, Cacheris, A, Callahan, K, Callen, J, Campbell, G, Candy, J, Canik, J, Cano-Megias, P, Cao, N, Carayannopoulos, L, Carlstrom, T, Carrig, W, Carter, T, Cary, W, Casali, L, Cengher, M, Paz, G, Chaban, R, Chan, V, Chapman, B, Char, I, Chattopadhyay, A, Chen, R, Chen, J, Chen, X, Chen, M, Chen, Z, Choi, M, Choi, W, Choi, G, Chousal, L, Chrobak, C, Chrystal, C, Chung, Y, Churchill, R, Cianciosa, M, Clark, J, Clement, M, Coda, S, Cole, A, Collins, C, Conlin, W, Cooper, A, Cordell, J, Coriton, B, Cote, T, Cothran, J, Creely, A, Crocker, N, Crowe, C, Crowley, B, Crowley, T, Cruz-Zabala, D, Cummings, D, Curie, M, Curreli, D, Dal Molin, A, Dannels, B, Dautt-Silva, A, Davda, K, De Tommasi, G, De Vries, P, Degrandchamp, G, Degrassie, J, Demers, D, Denk, S, Depasquale, S, Deshazer, E, Diallo, A, Diem, S, Dimits, A, Ding, R, Ding, S, Ding, W, Do, T, Doane, J, Dong, G, Donovan, D, Drake, J, Drews, W, Drobny, J, Du, X, Du, H, Duarte, V, Dudt, D, Dunn, C, Duran, J, Dvorak, A, Effenberg, F, Eidietis, N, Elder, D, Eldon, D, Ellis, R, Elwasif, W, Ennis, D, Erickson, K, Ernst, D, Fasciana, M, Fedorov, D, Feibush, E, Ferraro, N, 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Tala, T, Tanaka, K, Tang, X, Tang, S, Tao, Y, Tao, R, Taussig, D, Taylor, T, Teixeira, K, Teo, K, Theodorsen, A, Thomas, D, Thome, K, Thorman, A, Thornton, A, Ti, A, Tillack, M, Timchenko, N, Tinguely, R, Tompkins, R, Tooker, J, De Sousa, A, Trevisan, G, Tripathi, S, Ochoa, A, Truong, D, Tsui, C, Turco, F, Turnbull, A, Umansky, M, Unterberg, E, Vaezi, P, Vail, P, Valdez, J, Valkis, W, Van Compernolle, B, Van Galen, J, Van Kampen, R, Van Zeeland, M, Verdoolaege, G, Vianello, N, Victor, B, Viezzer, E, Vincena, S, Wade, M, Waelbroeck, F, Wai, J, Wakatsuki, T, Walker, M, Wallace, G, Waltz, R, Wampler, W, Wang, L, Wang, H, Wang, Y, Wang, Z, Wang, G, Ward, S, Watkins, M, Watkins, J, Wehner, W, Wei, Y, Weiland, M, Weisberg, D, Welander, A, White, A, White, R, Wiesen, S, Wilcox, R, Wilks, T, Willensdorfer, M, Wilson, H, Wingen, A, Wolde, M, Wolff, M, Woller, K, Wolz, A, Wong, H, Woodruff, S, Wu, M, Wu, Y, Wukitch, S, Wurden, G, Xiao, W, Xie, R, Xing, Z, Xu, X, Xu, C, Xu, G, Yan, Z, Yang, X, Yang, S, Yokoyama, T, Yoneda, R, Yoshida, M, You, K, Younkin, T, Yu, J, Yu, M, Yu, G, Yuan, Q, Zaidenberg, L, Zakharov, L, Zamengo, A, Zamperini, S, Zarnstorff, M, Zeger, E, Zeller, K, Zeng, L, Zerbini, M, Zhang, L, Zhang, X, Zhang, R, Zhang, B, Zhang, J, Zhao, L, Zhao, B, Zheng, Y, Zheng, L, Zhu, B, Zhu, J, Zhu, Y, Zsutty, M, Zuin, M, Fenstermacher, ME, Paz, GC, Quiroga, JG, Munoz, MG, Esquisabel, AL, Di Cortemiglia, TL, Burgos, JM, Canal, GP, Martinez, AP, Fernandez, PR, Ruiz, JR, De Sousa, AT, and Ochoa, AT

Abstract

DIII-D physics research addresses critical challenges for the operation of ITER and the next generation of fusion energy devices. This is done through a focus on innovations to provide solutions for high performance long pulse operation, coupled with fundamental plasma physics understanding and model validation, to drive scenario development by integrating high performance core and boundary plasmas. Substantial increases in off-axis current drive efficiency from an innovative top launch system for EC power, and in pressure broadening for Alfven eigenmode control from a co-/counter-I (p) steerable off-axis neutral beam, all improve the prospects for optimization of future long pulse/steady state high performance tokamak operation. Fundamental studies into the modes that drive the evolution of the pedestal pressure profile and electron vs ion heat flux validate predictive models of pedestal recovery after ELMs. Understanding the physics mechanisms of ELM control and density pumpout by 3D magnetic perturbation fields leads to confident predictions for ITER and future devices. Validated modeling of high-Z shattered pellet injection for disruption mitigation, runaway electron dissipation, and techniques for disruption prediction and avoidance including machine learning, give confidence in handling disruptivity for future devices. For the non-nuclear phase of ITER, two actuators are identified to lower the L-H threshold power in hydrogen plasmas. With this physics understanding and suite of capabilities, a high poloidal beta optimized-core scenario with an internal transport barrier that projects nearly to Q = 10 in ITER at similar to 8 MA was coupled to a detached divertor, and a near super H-mode optimized-pedestal scenario with co-I (p) beam injection was coupled to a radiative divertor. The hybrid core scenario was achieved directly, without the need for anomalous current diffusion, using off-axis current drive actuators. Also, a controller to assess proximity to stab

Published
2022

23. DIII-D research advancing the physics basis for optimizing the tokamak approach to fusion energy

Author

Fenstermacher, M. E., Abbate, J., Abe, S., Abrams, T., Adams, M., Adamson, B., Aiba, N., Akiyama, T., Aleynikov, P., Allen, E., Allen, S., Anand, H., Anderson, J., Andrew, Y., Andrews, T., Appelt, D., Arbon, R., Ashikawa, N., Ashourvan, A., Aslin, M., Asnis, Y., Austin, M., Ayala, D., Bak, J., Bandyopadhyay, I., Banerjee, S., Barada, K., Bardoczi, L., Barr, J., Bass, E., Battaglia, D., Battey, A., Baumgartner, W., Baylor, L., Beckers, J., Beidler, M., Belli, E., Berkery, J., Bernard, T., Bertelli, N., Beurskens, M., Bielajew, R., Bilgili, S., Biswas, B., Blondel, S., Boedo, J., Bogatu, I., Boivin, R., Bolzonella, T., Bongard, M., Bonnin, X., Bonoli, P., Bonotto, M., Bortolon, A., Bose, S., Bosviel, N., Bouwmans, S., Boyer, M., Boyes, W., Bradley, L., Brambila, R., Brennan, D., Bringuier, S., Brodsky, L., Brookman, M., Brooks, J., Brower, D., Brown, G., Brown, W., Burke, M., Burrell, K., Butler, K., Buttery, R., Bykov, I., Byrne, P., Cacheris, A., Callahan, K., Callen, J., Campbell, G., Candy, J., Canik, J., Cano-Megias, P., Cao, N., Carayannopoulos, L., Carlstrom, T., Carrig, W., Carter, T., Cary, W., Casali, L., Cengher, M., Cespedes Paz, G., Chaban, R., Chan, V., Chapman, B., Char, I., Chattopadhyay, A., Chen, R., Chen, J., Chen, X., Chen, M., Chen, Z., Choi, M., Choi, W., Choi, G., Chousal, L., Chrobak, C., Chrystal, C., Chung, Y., Churchill, R., Cianciosa, M., Clark, J., Clement, M., Coda, S., Cole, A., Collins, C., Conlin, W., Cooper, A., Cordell, J., Coriton, B., Cote, T., Cothran, J., Creely, A., Crocker, N., Crowe, C., Crowley, B., Crowley, T., Cruz-Zabala, D., Cummings, D., Curie, M., Curreli, D., Dal Molin, A., Dannels, B., Dautt-Silva, A., Davda, K., De Tommasi, G., De Vries, P., Degrandchamp, G., Degrassie, J., Demers, D., Denk, S., Depasquale, S., Deshazer, E., Diallo, A., Diem, S., Dimits, A., Ding, R., Ding, S., Ding, W., Do, T., Doane, J., Dong, G., Donovan, D., Drake, J., Drews, W., Drobny, J., Du, X., Du, H., Duarte, V., Dudt, D., Dunn, C., Duran, J., Dvorak, A., Effenberg, F., Eidietis, N., Elder, D., Eldon, D., Ellis, R., Elwasif, W., Ennis, D., Erickson, K., Ernst, D., Fasciana, M., Fedorov, D., Feibush, E., Ferraro, N., Ferreira, J., Ferron, J., Fimognari, P., Finkenthal, D., Fitzpatrick, R., Fox, P., Fox, W., Frassinetti, L., Frerichs, H., Frye, H., Fu, Y., Gage, K., Galdon Quiroga, J., Gallo, A., Gao, Q., Garcia, A., Garcia Munoz, M., Garnier, D., Garofalo, A., Gattuso, A., Geng, D., Gentle, K., Ghosh, D., Giacomelli, L., Gibson, S., Gilson, E., Giroud, C., Glass, F., Glasser, A., Glibert, D., Gohil, P., Gomez, R., Gomez, S., Gong, X., Gonzales, E., Goodman, A., Gorelov, Y., Graber, V., Granetz, R., Gray, T., Green, D., Greenfield, C., Greenwald, M., Grierson, B., Groebner, R., Grosnickle, W., Groth, M., Grunloh, H., Gu, S., Guo, W., Guo, H., Gupta, P., Guterl, J., Guttenfelder, W., Guzman, T., Haar, S., Hager, R., Hahn, S., Halfmoon, M., Hall, T., Hallatschek, K., Halpern, F., Hammett, G., Han, H., Hansen, E., Hansen, C., Hansink, M., Hanson, J., Hanson, M., Hao, G., Harris, A., Harvey, R., Haskey, S., Hassan, E., Hassanein, A., Hatch, D., Hawryluk, R., Hayashi, W., Heidbrink, W., Herfindal, J., Hicok, J., Hill, D., Hinson, E., Holcomb, C., Holland, L., Holland, C., Hollmann, E., Hollocombe, J., Holm, A., Holmes, I., Holtrop, K., Honda, M., Hong, R., Hood, R., Horton, A., Horvath, L., Hosokawa, M., Houshmandyar, S., Howard, N., Howell, E., Hoyt, D., Hu, W., Hu, Y., Hu, Q., Huang, J., Huang, Y., Hughes, J., Human, T., Humphreys, D., Huynh, P., Hyatt, A., Ibanez, C., Ibarra, L., Icasas, R., Ida, K., Igochine, V., In, Y., Inoue, S., Isayama, A., Izacard, O., Izzo, V., Jackson, A., Jacobsen, G., Jaervinen, A., Jalalvand, A., Janhunen, J., Jardin, S., Jarleblad, H., Jeon, Y., Ji, H., Jian, X., Joffrin, E., Johansen, A., Johnson, C., Johnson, T., Jones, C., Joseph, I., Jubas, D., Junge, B., Kalb, W., Kalling, R., Kamath, C., Kang, J., Kaplan, D., Kaptanoglu, A., Kasdorf, S., Kates-Harbeck, J., Kazantzidis, P., Kellman, A., Kellman, D., Kessel, C., Khumthong, K., Kim, E., Kim, H., Kim, J., Kim, S., Kim, K., Kim, C., Kimura, W., King, M., King, J., Kinsey, J., Kirk, A., Kiyan, B., Kleiner, A., Klevarova, V., Knapp, R., Knolker, M., Ko, W., Kobayashi, T., Koch, E., Kochan, M., Koel, B., Koepke, M., Kohn, A., Kolasinski, R., Kolemen, E., Kostadinova, E., Kostuk, M., Kramer, G., Kriete, D., Kripner, L., Kubota, S., Kulchar, J., Kwon, K., La Haye, R., Laggner, F., Lan, H., Lantsov, R., Lao, L., Lasa Esquisabel, A., Lasnier, C., Lau, C., Leard, B., Lee, J., Lee, R., Lee, M., Lee, Y., Lee, C., Lee, S., Lehnen, M., Leonard, A., Leppink, E., Lesher, M., Lestz, J., Leuer, J., Leuthold, N., Li, X., Li, K., Li, E., Li, G., Li, L., Li, Z., Li, J., Li, Y., Lin, Z., Lin, D., Liu, X., Liu, J., Liu, Y., Liu, T., Liu, C., Liu, Z., Liu, D., Liu, A., Loarte-Prieto, A., Lodestro, L., Logan, N., Lohr, J., Lombardo, B., Lore, J., Luan, Q., Luce, T., Luda Di Cortemiglia, T., Luhmann, N., Lunsford, R., Luo, Z., Lvovskiy, A., Lyons, B., Ma, X., Madruga, M., Madsen, B., Maggi, C., Maheshwari, K., Mail, A., Mailloux, J., Maingi, R., Major, M., Makowski, M., Manchanda, R., Marini, C., Marinoni, A., Maris, A., Markovic, T., Marrelli, L., Martin, E., Mateja, J., Matsunaga, G., Maurizio, R., Mauzey, P., Mauzey, D., McArdle, G., McClenaghan, J., McCollam, K., McDevitt, C., McKay, K., McKee, G., McLean, A., Mehta, V., Meier, E., Menard, J., Meneghini, O., Merlo, G., Messer, S., Meyer, W., Michael, C., Michoski, C., Milne, P., Minet, G., Misleh, A., Mitrishkin, Y., Moeller, C., Montes, K., Morales, M., Mordijck, S., Moreau, D., Morosohk, S., Morris, P., Morton, L., Moser, A., Moyer, R., Moynihan, C., Mrazkova, T., Mueller, D., Munaretto, S., Munoz Burgos, J., Murphy, C., Murphy, K., Muscatello, C., Myers, C., Nagy, A., Nandipati, G., Navarro, M., Nave, F., Navratil, G., Nazikian, R., Neff, A., Neilson, G., Neiser, T., Neiswanger, W., Nelson, D., Nelson, A., Nespoli, F., Nguyen, R., Nguyen, L., Nguyen, X., Nichols, J., Nocente, M., Nogami, S., Noraky, S., Norausky, N., Nornberg, M., Nygren, R., Odstrcil, T., Ogas, D., Ogorman, T., Ohdachi, S., Ohtani, Y., Okabayashi, M., Okamoto, M., Olavson, L., Olofsson, E., Omullane, M., Oneill, R., Orlov, D., Orvis, W., Osborne, T., Pace, D., Paganini Canal, G., Pajares Martinez, A., Palacios, L., Pan, C., Pan, Q., Pandit, R., Pandya, M., Pankin, A., Park, Y., Park, J., Parker, S., Parks, P., Parsons, M., Patel, B., Pawley, C., Paz-Soldan, C., Peebles, W., Pelton, S., Perillo, R., Petty, C., Peysson, Y., Pierce, D., Pigarov, A., Pigatto, L., Piglowski, D., Pinches, S., Pinsker, R., Piovesan, P., Piper, N., Pironti, A., Pitts, R., Pizzo, J., Plank, U., Podesta, M., Poli, E., Poli, F., Ponce, D., Popovic, Z., Porkolab, M., Porter, G., Powers, C., Powers, S., Prater, R., Pratt, Q., Pusztai, I., Qian, J., Qin, X., Ra, O., Rafiq, T., Raines, T., Raman, R., Rauch, J., Raymond, A., Rea, C., Reich, M., Reiman, A., Reinhold, S., Reinke, M., Reksoatmodjo, R., Ren, Q., Ren, Y., Ren, J., Rensink, M., Renteria, J., Rhodes, T., Rice, J., Roberts, R., Robinson, J., Rodriguez Fernandez, P., Rognlien, T., Rosenthal, A., Rosiello, S., Rost, J., Roveto, J., Rowan, W., Rozenblat, R., Ruane, J., Rudakov, D., Ruiz Ruiz, J., Rupani, R., Saarelma, S., Sabbagh, S., Sachdev, J., Saenz, J., Saib, S., Salewski, M., Salmi, A., Sammuli, B., Samuell, C., Sandorfi, A., Sang, C., Sarff, J., Sauter, O., Schaubel, K., Schmitz, L., Schmitz, O., Schneider, J., Schroeder, P., Schultz, K., Schuster, E., Schwartz, J., Sciortino, F., Scotti, F., Scoville, J., Seltzman, A., Seol, S., Sfiligoi, I., Shafer, M., Sharapov, S., Shen, H., Sheng, Z., Shepard, T., Shi, S., Shibata, Y., Shin, G., Shiraki, D., Shousha, R., Si, H., Simmerling, P., Sinclair, G., Sinha, J., Sinha, P., Sips, G., Sizyuk, T., Skinner, C., Sladkomedova, A., Slendebroek, T., Slief, J., Smirnov, R., Smith, J., Smith, S., Smith, D., Snipes, J., Snoep, G., Snyder, A., Snyder, P., Solano, E., Solomon, W., Song, J., Sontag, A., Soukhanovskii, V., Spendlove, J., Spong, D., Squire, J., Srinivasan, C., Stacey, W., Staebler, G., Stagner, L., Stange, T., Stangeby, P., Stefan, R., Stemprok, R., Stephan, D., Stillerman, J., Stoltzfus-Dueck, T., Stonecipher, W., Storment, S., Strait, E., Su, D., Sugiyama, L., Sun, Y., Sun, P., Sun, Z., Sun, A., Sundstrom, D., Sung, C., Sungcoco, J., Suttrop, W., Suzuki, Y., Suzuki, T., Svyatkovskiy, A., Swee, C., Sweeney, R., Sweetnam, C., Szepesi, G., Takechi, M., Tala, T., Tanaka, K., Tang, X., Tang, S., Tao, Y., Tao, R., Taussig, D., Taylor, T., Teixeira, K., Teo, K., Theodorsen, A., Thomas, D., Thome, K., Thorman, A., Thornton, A., Ti, A., Tillack, M., Timchenko, N., Tinguely, R., Tompkins, R., Tooker, J., Torrezan De Sousa, A., Trevisan, G., Tripathi, S., Trujillo Ochoa, A., Truong, D., Tsui, C., Turco, F., Turnbull, A., Umansky, M., Unterberg, E., Vaezi, P., Vail, P., Valdez, J., Valkis, W., Van Compernolle, B., Van Galen, J., Van Kampen, R., Van Zeeland, M., Verdoolaege, G., Vianello, N., Victor, B., Viezzer, E., Vincena, S., Wade, M., Waelbroeck, F., Wai, J., Wakatsuki, T., Walker, M., Wallace, G., Waltz, R., Wampler, W., Wang, L., Wang, H., Wang, Y., Wang, Z., Wang, G., Ward, S., Watkins, M., Watkins, J., Wehner, W., Wei, Y., Weiland, M., Weisberg, D., Welander, A., White, A., White, R., Wiesen, S., Wilcox, R., Wilks, T., Willensdorfer, M., Wilson, H., Wingen, A., Wolde, M., Wolff, M., Woller, K., Wolz, A., Wong, H., Woodruff, S., Wu, M., Wu, Y., Wukitch, S., Wurden, G., Xiao, W., Xie, R., Xing, Z., Xu, X., Xu, C., Xu, G., Yan, Z., Yang, X., Yang, S., Yokoyama, T., Yoneda, R., Yoshida, M., You, K., Younkin, T., Yu, J., Yu, M., Yu, G., Yuan, Q., Zaidenberg, L., Zakharov, L., Zamengo, A., Zamperini, S., Zarnstorff, M., Zeger, E., Zeller, K., Zeng, L., Zerbini, M., Zhang, L., Zhang, X., Zhang, R., Zhang, B., Zhang, J., Zhao, L., Zhao, B., Zheng, Y., Zheng, L., Zhu, B., Zhu, J., Zhu, Y., Zsutty, M., Zuin, M., Fenstermacher, M. E., Abbate, J., Abe, S., Abrams, T., Adams, M., Adamson, B., Aiba, N., Akiyama, T., Aleynikov, P., Allen, E., Allen, S., Anand, H., Anderson, J., Andrew, Y., Andrews, T., Appelt, D., Arbon, R., Ashikawa, N., Ashourvan, A., Aslin, M., Asnis, Y., Austin, M., Ayala, D., Bak, J., Bandyopadhyay, I., Banerjee, S., Barada, K., Bardoczi, L., Barr, J., Bass, E., Battaglia, D., Battey, A., Baumgartner, W., Baylor, L., Beckers, J., Beidler, M., Belli, E., Berkery, J., Bernard, T., Bertelli, N., Beurskens, M., Bielajew, R., Bilgili, S., Biswas, B., Blondel, S., Boedo, J., Bogatu, I., Boivin, R., Bolzonella, T., Bongard, M., Bonnin, X., Bonoli, P., Bonotto, M., Bortolon, A., Bose, S., Bosviel, N., Bouwmans, S., Boyer, M., Boyes, W., Bradley, L., Brambila, R., Brennan, D., Bringuier, S., Brodsky, L., Brookman, M., Brooks, J., Brower, D., Brown, G., Brown, W., Burke, M., Burrell, K., Butler, K., Buttery, R., Bykov, I., Byrne, P., Cacheris, A., Callahan, K., Callen, J., Campbell, G., Candy, J., Canik, J., Cano-Megias, P., Cao, N., Carayannopoulos, L., Carlstrom, T., Carrig, W., Carter, T., Cary, W., Casali, L., Cengher, M., Cespedes Paz, G., Chaban, R., Chan, V., Chapman, B., Char, I., Chattopadhyay, A., Chen, R., Chen, J., Chen, X., Chen, M., Chen, Z., Choi, M., Choi, W., Choi, G., Chousal, L., Chrobak, C., Chrystal, C., Chung, Y., Churchill, R., Cianciosa, M., Clark, J., Clement, M., Coda, S., Cole, A., Collins, C., Conlin, W., Cooper, A., Cordell, J., Coriton, B., Cote, T., Cothran, J., Creely, A., Crocker, N., Crowe, C., Crowley, B., Crowley, T., Cruz-Zabala, D., Cummings, D., Curie, M., Curreli, D., Dal Molin, A., Dannels, B., Dautt-Silva, A., Davda, K., De Tommasi, G., De Vries, P., Degrandchamp, G., Degrassie, J., Demers, D., Denk, S., Depasquale, S., Deshazer, E., Diallo, A., Diem, S., Dimits, A., Ding, R., Ding, S., Ding, W., Do, T., Doane, J., Dong, G., Donovan, D., Drake, J., Drews, W., Drobny, J., Du, X., Du, H., Duarte, V., Dudt, D., Dunn, C., Duran, J., Dvorak, A., Effenberg, F., Eidietis, N., Elder, D., Eldon, D., Ellis, R., Elwasif, W., Ennis, D., Erickson, K., Ernst, D., Fasciana, M., Fedorov, D., Feibush, E., Ferraro, N., Ferreira, J., Ferron, J., Fimognari, P., Finkenthal, D., Fitzpatrick, R., Fox, P., Fox, W., Frassinetti, L., Frerichs, H., Frye, H., Fu, Y., Gage, K., Galdon Quiroga, J., Gallo, A., Gao, Q., Garcia, A., Garcia Munoz, M., Garnier, D., Garofalo, A., Gattuso, A., Geng, D., Gentle, K., Ghosh, D., Giacomelli, L., Gibson, S., Gilson, E., Giroud, C., Glass, F., Glasser, A., Glibert, D., Gohil, P., Gomez, R., Gomez, S., Gong, X., Gonzales, E., Goodman, A., Gorelov, Y., Graber, V., Granetz, R., Gray, T., Green, D., Greenfield, C., Greenwald, M., Grierson, B., Groebner, R., Grosnickle, W., Groth, M., Grunloh, H., Gu, S., Guo, W., Guo, H., Gupta, P., Guterl, J., Guttenfelder, W., Guzman, T., Haar, S., Hager, R., Hahn, S., Halfmoon, M., Hall, T., Hallatschek, K., Halpern, F., Hammett, G., Han, H., Hansen, E., Hansen, C., Hansink, M., Hanson, J., Hanson, M., Hao, G., Harris, A., Harvey, R., Haskey, S., Hassan, E., Hassanein, A., Hatch, D., Hawryluk, R., Hayashi, W., Heidbrink, W., Herfindal, J., Hicok, J., Hill, D., Hinson, E., Holcomb, C., Holland, L., Holland, C., Hollmann, E., Hollocombe, J., Holm, A., Holmes, I., Holtrop, K., Honda, M., Hong, R., Hood, R., Horton, A., Horvath, L., Hosokawa, M., Houshmandyar, S., Howard, N., Howell, E., Hoyt, D., Hu, W., Hu, Y., Hu, Q., Huang, J., Huang, Y., Hughes, J., Human, T., Humphreys, D., Huynh, P., Hyatt, A., Ibanez, C., Ibarra, L., Icasas, R., Ida, K., Igochine, V., In, Y., Inoue, S., Isayama, A., Izacard, O., Izzo, V., Jackson, A., Jacobsen, G., Jaervinen, A., Jalalvand, A., Janhunen, J., Jardin, S., Jarleblad, H., Jeon, Y., Ji, H., Jian, X., Joffrin, E., Johansen, A., Johnson, C., Johnson, T., Jones, C., Joseph, I., Jubas, D., Junge, B., Kalb, W., Kalling, R., Kamath, C., Kang, J., Kaplan, D., Kaptanoglu, A., Kasdorf, S., Kates-Harbeck, J., Kazantzidis, P., Kellman, A., Kellman, D., Kessel, C., Khumthong, K., Kim, E., Kim, H., Kim, J., Kim, S., Kim, K., Kim, C., Kimura, W., King, M., King, J., Kinsey, J., Kirk, A., Kiyan, B., Kleiner, A., Klevarova, V., Knapp, R., Knolker, M., Ko, W., Kobayashi, T., Koch, E., Kochan, M., Koel, B., Koepke, M., Kohn, A., Kolasinski, R., Kolemen, E., Kostadinova, E., Kostuk, M., Kramer, G., Kriete, D., Kripner, L., Kubota, S., Kulchar, J., Kwon, K., La Haye, R., Laggner, F., Lan, H., Lantsov, R., Lao, L., Lasa Esquisabel, A., Lasnier, C., Lau, C., Leard, B., Lee, J., Lee, R., Lee, M., Lee, Y., Lee, C., Lee, S., Lehnen, M., Leonard, A., Leppink, E., Lesher, M., Lestz, J., Leuer, J., Leuthold, N., Li, X., Li, K., Li, E., Li, G., Li, L., Li, Z., Li, J., Li, Y., Lin, Z., Lin, D., Liu, X., Liu, J., Liu, Y., Liu, T., Liu, C., Liu, Z., Liu, D., Liu, A., Loarte-Prieto, A., Lodestro, L., Logan, N., Lohr, J., Lombardo, B., Lore, J., Luan, Q., Luce, T., Luda Di Cortemiglia, T., Luhmann, N., Lunsford, R., Luo, Z., Lvovskiy, A., Lyons, B., Ma, X., Madruga, M., Madsen, B., Maggi, C., Maheshwari, K., Mail, A., Mailloux, J., Maingi, R., Major, M., Makowski, M., Manchanda, R., Marini, C., Marinoni, A., Maris, A., Markovic, T., Marrelli, L., Martin, E., Mateja, J., Matsunaga, G., Maurizio, R., Mauzey, P., Mauzey, D., McArdle, G., McClenaghan, J., McCollam, K., McDevitt, C., McKay, K., McKee, G., McLean, A., Mehta, V., Meier, E., Menard, J., Meneghini, O., Merlo, G., Messer, S., Meyer, W., Michael, C., Michoski, C., Milne, P., Minet, G., Misleh, A., Mitrishkin, Y., Moeller, C., Montes, K., Morales, M., Mordijck, S., Moreau, D., Morosohk, S., Morris, P., Morton, L., Moser, A., Moyer, R., Moynihan, C., Mrazkova, T., Mueller, D., Munaretto, S., Munoz Burgos, J., Murphy, C., Murphy, K., Muscatello, C., Myers, C., Nagy, A., Nandipati, G., Navarro, M., Nave, F., Navratil, G., Nazikian, R., Neff, A., Neilson, G., Neiser, T., Neiswanger, W., Nelson, D., Nelson, A., Nespoli, F., Nguyen, R., Nguyen, L., Nguyen, X., Nichols, J., Nocente, M., Nogami, S., Noraky, S., Norausky, N., Nornberg, M., Nygren, R., Odstrcil, T., Ogas, D., Ogorman, T., Ohdachi, S., Ohtani, Y., Okabayashi, M., Okamoto, M., Olavson, L., Olofsson, E., Omullane, M., Oneill, R., Orlov, D., Orvis, W., Osborne, T., Pace, D., Paganini Canal, G., Pajares Martinez, A., Palacios, L., Pan, C., Pan, Q., Pandit, R., Pandya, M., Pankin, A., Park, Y., Park, J., Parker, S., Parks, P., Parsons, M., Patel, B., Pawley, C., Paz-Soldan, C., Peebles, W., Pelton, S., Perillo, R., Petty, C., Peysson, Y., Pierce, D., Pigarov, A., Pigatto, L., Piglowski, D., Pinches, S., Pinsker, R., Piovesan, P., Piper, N., Pironti, A., Pitts, R., Pizzo, J., Plank, U., Podesta, M., Poli, E., Poli, F., Ponce, D., Popovic, Z., Porkolab, M., Porter, G., Powers, C., Powers, S., Prater, R., Pratt, Q., Pusztai, I., Qian, J., Qin, X., Ra, O., Rafiq, T., Raines, T., Raman, R., Rauch, J., Raymond, A., Rea, C., Reich, M., Reiman, A., Reinhold, S., Reinke, M., Reksoatmodjo, R., Ren, Q., 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Abstract

DIII-D physics research addresses critical challenges for the operation of ITER and the next generation of fusion energy devices. This is done through a focus on innovations to provide solutions for high performance long pulse operation, coupled with fundamental plasma physics understanding and model validation, to drive scenario development by integrating high performance core and boundary plasmas. Substantial increases in off-axis current drive efficiency from an innovative top launch system for EC power, and in pressure broadening for Alfven eigenmode control from a co-/counter-I p steerable off-axis neutral beam, all improve the prospects for optimization of future long pulse/steady state high performance tokamak operation. Fundamental studies into the modes that drive the evolution of the pedestal pressure profile and electron vs ion heat flux validate predictive models of pedestal recovery after ELMs. Understanding the physics mechanisms of ELM control and density pumpout by 3D magnetic perturbation fields leads to confident predictions for ITER and future devices. Validated modeling of high-Z shattered pellet injection for disruption mitigation, runaway electron dissipation, and techniques for disruption prediction and avoidance including machine learning, give confidence in handling disruptivity for future devices. For the non-nuclear phase of ITER, two actuators are identified to lower the L-H threshold power in hydrogen plasmas. With this physics understanding and suite of capabilities, a high poloidal beta optimized-core scenario with an internal transport barrier that projects nearly to Q = 10 in ITER at ∼8 MA was coupled to a detached divertor, and a near super H-mode optimized-pedestal scenario with co-I p beam injection was coupled to a radiative divertor. The hybrid core scenario was achieved directly, without the need for anomalous current diffusion, using off-axis current drive actuators. Also, a controller to assess proximity to stability limit

Published
2022

24. DIII-D research advancing the physics basis for optimizing the tokamak approach to fusion energy

Author

Fenstermacher, M. E., primary, Abbate, J., additional, Abe, S., additional, Abrams, T., additional, Adams, M., additional, Adamson, B., additional, Aiba, N., additional, Akiyama, T., additional, Aleynikov, P., additional, Allen, E., additional, Allen, S., additional, Anand, H., additional, Anderson, J., additional, Andrew, Y., additional, Andrews, T., additional, Appelt, D., additional, Arbon, R., additional, Ashikawa, N., additional, Ashourvan, A., additional, Aslin, M., additional, Asnis, Y., additional, Austin, M., additional, Ayala, D., additional, Bak, J., additional, Bandyopadhyay, I., additional, Banerjee, S., additional, Barada, K., additional, Bardoczi, L., additional, Barr, J., additional, Bass, E., additional, Battaglia, D., additional, Battey, A., additional, Baumgartner, W., additional, Baylor, L., additional, Beckers, J., additional, Beidler, M., additional, Belli, E., additional, Berkery, J., additional, Bernard, T., additional, Bertelli, N., additional, Beurskens, M., additional, Bielajew, R., additional, Bilgili, S., additional, Biswas, B., additional, Blondel, S., additional, Boedo, J., additional, Bogatu, I., additional, Boivin, R., additional, Bolzonella, T., additional, Bongard, M., additional, Bonnin, X., additional, Bonoli, P., additional, Bonotto, M., additional, Bortolon, A., additional, Bose, S., additional, Bosviel, N., additional, Bouwmans, S., additional, Boyer, M., additional, Boyes, W., additional, Bradley, L., additional, Brambila, R., additional, Brennan, D., additional, Bringuier, S., additional, Brodsky, L., additional, Brookman, M., additional, Brooks, J., additional, Brower, D., additional, Brown, G., additional, Brown, W., additional, Burke, M., additional, Burrell, K., additional, Butler, K., additional, Buttery, R., additional, Bykov, I., additional, Byrne, P., additional, Cacheris, A., additional, Callahan, K., additional, Callen, J., additional, Campbell, G., additional, Candy, J., additional, Canik, J., additional, Cano-Megias, P., additional, Cao, N., additional, Carayannopoulos, L., additional, Carlstrom, T., additional, Carrig, W., additional, Carter, T., additional, Cary, W., additional, Casali, L., additional, Cengher, M., additional, Cespedes Paz, G., additional, Chaban, R., additional, Chan, V., additional, Chapman, B., additional, Char, I., additional, Chattopadhyay, A., additional, Chen, R., additional, Chen, J., additional, Chen, X., additional, Chen, M., additional, Chen, Z., additional, Choi, M., additional, Choi, W., additional, Choi, G., additional, Chousal, L., additional, Chrobak, C., additional, Chrystal, C., additional, Chung, Y., additional, Churchill, R., additional, Cianciosa, M., additional, Clark, J., additional, Clement, M., additional, Coda, S., additional, Cole, A., additional, Collins, C., additional, Conlin, W., additional, Cooper, A., additional, Cordell, J., additional, Coriton, B., additional, Cote, T., additional, Cothran, J., additional, Creely, A., additional, Crocker, N., additional, Crowe, C., additional, Crowley, B., additional, Crowley, T., additional, Cruz-Zabala, D., additional, Cummings, D., additional, Curie, M., additional, Curreli, D., additional, Dal Molin, A., additional, Dannels, B., additional, Dautt-Silva, A., additional, Davda, K., additional, De Tommasi, G., additional, De Vries, P., additional, Degrandchamp, G., additional, Degrassie, J., additional, Demers, D., additional, Denk, S., additional, Depasquale, S., additional, Deshazer, E., additional, Diallo, A., additional, Diem, S., additional, Dimits, A., additional, Ding, R., additional, Ding, S., additional, Ding, W., additional, Do, T., additional, Doane, J., additional, Dong, G., additional, Donovan, D., additional, Drake, J., additional, Drews, W., additional, Drobny, J., additional, Du, X., additional, Du, H., additional, Duarte, V., additional, Dudt, D., additional, Dunn, C., additional, Duran, J., additional, Dvorak, A., additional, Effenberg, F., additional, Eidietis, N., additional, Elder, D., additional, Eldon, D., additional, Ellis, R., additional, Elwasif, W., additional, Ennis, D., additional, Erickson, K., additional, Ernst, D., additional, Fasciana, M., additional, Fedorov, D., additional, Feibush, E., additional, Ferraro, N., additional, Ferreira, J., additional, Ferron, J., additional, Fimognari, P., additional, Finkenthal, D., additional, Fitzpatrick, R., additional, Fox, P., additional, Fox, W., additional, Frassinetti, L., additional, Frerichs, H., additional, Frye, H., additional, Fu, Y., additional, Gage, K., additional, Galdon Quiroga, J., additional, Gallo, A., additional, Gao, Q., additional, Garcia, A., additional, Garcia Munoz, M., additional, Garnier, D., additional, Garofalo, A., additional, Gattuso, A., additional, Geng, D., additional, Gentle, K., additional, Ghosh, D., additional, Giacomelli, L., additional, Gibson, S., additional, Gilson, E., additional, Giroud, C., additional, Glass, F., additional, Glasser, A., additional, Glibert, D., additional, Gohil, P., additional, Gomez, R., additional, Gomez, S., additional, Gong, X., additional, Gonzales, E., additional, Goodman, A., additional, Gorelov, Y., additional, Graber, V., additional, Granetz, R., additional, Gray, T., additional, Green, D., additional, Greenfield, C., additional, Greenwald, M., additional, Grierson, B., additional, Groebner, R., additional, Grosnickle, W., additional, Groth, M., additional, Grunloh, H., additional, Gu, S., additional, Guo, W., additional, Guo, H., additional, Gupta, P., additional, Guterl, J., additional, Guttenfelder, W., additional, Guzman, T., additional, Haar, S., additional, Hager, R., additional, Hahn, S., additional, Halfmoon, M., additional, Hall, T., additional, Hallatschek, K., additional, Halpern, F., additional, Hammett, G., additional, Han, H., additional, Hansen, E., additional, Hansen, C., additional, Hansink, M., additional, Hanson, J., additional, Hanson, M., additional, Hao, G., additional, Harris, A., additional, Harvey, R., additional, Haskey, S., additional, Hassan, E., additional, Hassanein, A., additional, Hatch, D., additional, Hawryluk, R., additional, Hayashi, W., additional, Heidbrink, W., additional, Herfindal, J., additional, Hicok, J., additional, Hill, D., additional, Hinson, E., additional, Holcomb, C., additional, Holland, L., additional, Holland, C., additional, Hollmann, E., additional, Hollocombe, J., additional, Holm, A., additional, Holmes, I., additional, Holtrop, K., additional, Honda, M., additional, Hong, R., additional, Hood, R., additional, Horton, A., additional, Horvath, L., additional, Hosokawa, M., additional, Houshmandyar, S., additional, Howard, N., additional, Howell, E., additional, Hoyt, D., additional, Hu, W., additional, Hu, Y., additional, Hu, Q., additional, Huang, J., additional, Huang, Y., additional, Hughes, J., additional, Human, T., additional, Humphreys, D., additional, Huynh, P., additional, Hyatt, A., additional, Ibanez, C., additional, Ibarra, L., additional, Icasas, R., additional, Ida, K., additional, Igochine, V., additional, In, Y., additional, Inoue, S., additional, Isayama, A., additional, Izacard, O., additional, Izzo, V., additional, Jackson, A., additional, Jacobsen, G., additional, Jaervinen, A., additional, Jalalvand, A., additional, Janhunen, J., additional, Jardin, S., additional, Jarleblad, H., additional, Jeon, Y., additional, Ji, H., additional, Jian, X., additional, Joffrin, E., additional, Johansen, A., additional, Johnson, C., additional, Johnson, T., additional, Jones, C., additional, Joseph, I., additional, Jubas, D., additional, Junge, B., additional, Kalb, W., additional, Kalling, R., additional, Kamath, C., additional, Kang, J., additional, Kaplan, D., additional, Kaptanoglu, A., additional, Kasdorf, S., additional, Kates-Harbeck, J., additional, Kazantzidis, P., additional, Kellman, A., additional, Kellman, D., additional, Kessel, C., additional, Khumthong, K., additional, Kim, E., additional, Kim, H., additional, Kim, J., additional, Kim, S., additional, Kim, K., additional, Kim, C., additional, Kimura, W., additional, King, M., additional, King, J., additional, Kinsey, J., additional, Kirk, A., additional, Kiyan, B., additional, Kleiner, A., additional, Klevarova, V., additional, Knapp, R., additional, Knolker, M., additional, Ko, W., additional, Kobayashi, T., additional, Koch, E., additional, Kochan, M., additional, Koel, B., additional, Koepke, M., additional, Kohn, A., additional, Kolasinski, R., additional, Kolemen, E., additional, Kostadinova, E., additional, Kostuk, M., additional, Kramer, G., additional, Kriete, D., additional, Kripner, L., additional, Kubota, S., additional, Kulchar, J., additional, Kwon, K., additional, La Haye, R., additional, Laggner, F., additional, Lan, H., additional, Lantsov, R., additional, Lao, L., additional, Lasa Esquisabel, A., additional, Lasnier, C., additional, Lau, C., additional, Leard, B., additional, Lee, J., additional, Lee, R., additional, Lee, M., additional, Lee, Y., additional, Lee, C., additional, Lee, S., additional, Lehnen, M., additional, Leonard, A., additional, Leppink, E., additional, Lesher, M., additional, Lestz, J., additional, Leuer, J., additional, Leuthold, N., additional, Li, X., additional, Li, K., additional, Li, E., additional, Li, G., additional, Li, L., additional, Li, Z., additional, Li, J., additional, Li, Y., additional, Lin, Z., additional, Lin, D., additional, Liu, X., additional, Liu, J., additional, Liu, Y., additional, Liu, T., additional, Liu, C., additional, Liu, Z., additional, Liu, D., additional, Liu, A., additional, Loarte-Prieto, A., additional, Lodestro, L., additional, Logan, N., additional, Lohr, J., additional, Lombardo, B., additional, Lore, J., additional, Luan, Q., additional, Luce, T., additional, Luda Di Cortemiglia, T., additional, Luhmann, N., additional, Lunsford, R., additional, Luo, Z., additional, Lvovskiy, A., additional, Lyons, B., additional, Ma, X., additional, Madruga, M., additional, Madsen, B., additional, Maggi, C., additional, Maheshwari, K., additional, Mail, A., additional, Mailloux, J., additional, Maingi, R., additional, Major, M., additional, Makowski, M., additional, Manchanda, R., additional, Marini, C., additional, Marinoni, A., additional, Maris, A., additional, Markovic, T., additional, Marrelli, L., additional, Martin, E., additional, Mateja, J., additional, Matsunaga, G., additional, Maurizio, R., additional, Mauzey, P., additional, Mauzey, D., additional, Mcardle, G., additional, Mcclenaghan, J., additional, Mccollam, K., additional, Mcdevitt, C., additional, Mckay, K., additional, Mckee, G., additional, Mclean, A., additional, Mehta, V., additional, Meier, E., additional, Menard, J., additional, Meneghini, O., additional, Merlo, G., additional, Messer, S., additional, Meyer, W., additional, Michael, C., additional, Michoski, C., additional, Milne, P., additional, Minet, G., additional, Misleh, A., additional, Mitrishkin, Y., additional, Moeller, C., additional, Montes, K., additional, Morales, M., additional, Mordijck, S., additional, Moreau, D., additional, Morosohk, S., additional, Morris, P., additional, Morton, L., additional, Moser, A., additional, Moyer, R., additional, Moynihan, C., additional, Mrazkova, T., additional, Mueller, D., additional, Munaretto, S., additional, Munoz Burgos, J., additional, Murphy, C., additional, Murphy, K., additional, Muscatello, C., additional, Myers, C., additional, Nagy, A., additional, Nandipati, G., additional, Navarro, M., additional, Nave, F., additional, Navratil, G., additional, Nazikian, R., additional, Neff, A., additional, Neilson, G., additional, Neiser, T., additional, Neiswanger, W., additional, Nelson, D., additional, Nelson, A., additional, Nespoli, F., additional, Nguyen, R., additional, Nguyen, L., additional, Nguyen, X., additional, Nichols, J., additional, Nocente, M., additional, Nogami, S., additional, Noraky, S., additional, Norausky, N., additional, Nornberg, M., additional, Nygren, R., additional, Odstrcil, T., additional, Ogas, D., additional, Ogorman, T., additional, Ohdachi, S., additional, Ohtani, Y., additional, Okabayashi, M., additional, Okamoto, M., additional, Olavson, L., additional, Olofsson, E., additional, Omullane, M., additional, Oneill, R., additional, Orlov, D., additional, Orvis, W., additional, Osborne, T., additional, Pace, D., additional, Paganini Canal, G., additional, Pajares Martinez, A., additional, Palacios, L., additional, Pan, C., additional, Pan, Q., additional, Pandit, R., additional, Pandya, M., additional, Pankin, A., additional, Park, Y., additional, Park, J., additional, Parker, S., additional, Parks, P., additional, Parsons, M., additional, Patel, B., additional, Pawley, C., additional, Paz-Soldan, C., additional, Peebles, W., additional, Pelton, S., additional, Perillo, R., additional, Petty, C., additional, Peysson, Y., additional, Pierce, D., additional, Pigarov, A., additional, Pigatto, L., additional, Piglowski, D., additional, Pinches, S., additional, Pinsker, R., additional, Piovesan, P., additional, Piper, N., additional, Pironti, A., additional, Pitts, R., additional, Pizzo, J., additional, Plank, U., additional, Podesta, M., additional, Poli, E., additional, Poli, F., additional, Ponce, D., additional, Popovic, Z., additional, Porkolab, M., additional, Porter, G., additional, Powers, C., additional, Powers, S., additional, Prater, R., additional, Pratt, Q., additional, Pusztai, I., additional, Qian, J., additional, Qin, X., additional, Ra, O., additional, Rafiq, T., additional, Raines, T., additional, Raman, R., additional, Rauch, J., additional, Raymond, A., additional, Rea, C., additional, Reich, M., additional, Reiman, A., additional, Reinhold, S., additional, Reinke, M., additional, Reksoatmodjo, R., additional, Ren, Q., additional, Ren, Y., additional, Ren, J., additional, Rensink, M., additional, Renteria, J., additional, Rhodes, T., additional, Rice, J., additional, Roberts, R., additional, Robinson, J., additional, Rodriguez Fernandez, P., additional, Rognlien, T., additional, Rosenthal, A., additional, Rosiello, S., additional, Rost, J., additional, Roveto, J., additional, Rowan, W., additional, Rozenblat, R., additional, Ruane, J., additional, Rudakov, D., additional, Ruiz Ruiz, J., additional, Rupani, R., additional, Saarelma, S., additional, Sabbagh, S., additional, Sachdev, J., additional, Saenz, J., additional, Saib, S., additional, Salewski, M., additional, Salmi, A., additional, Sammuli, B., additional, Samuell, C., additional, Sandorfi, A., additional, Sang, C., additional, Sarff, J., additional, Sauter, O., additional, Schaubel, K., additional, Schmitz, L., additional, Schmitz, O., additional, Schneider, J., additional, Schroeder, P., additional, Schultz, K., additional, Schuster, E., additional, Schwartz, J., additional, Sciortino, F., additional, Scotti, F., additional, Scoville, J., additional, Seltzman, A., additional, Seol, S., additional, Sfiligoi, I., additional, Shafer, M., additional, Sharapov, S., additional, Shen, H., additional, Sheng, Z., additional, Shepard, T., additional, Shi, S., additional, Shibata, Y., additional, Shin, G., additional, Shiraki, D., additional, Shousha, R., additional, Si, H., additional, Simmerling, P., additional, Sinclair, G., additional, Sinha, J., additional, Sinha, P., additional, Sips, G., additional, Sizyuk, T., additional, Skinner, C., additional, Sladkomedova, A., additional, Slendebroek, T., additional, Slief, J., additional, Smirnov, R., additional, Smith, J., additional, Smith, S., additional, Smith, D., additional, Snipes, J., additional, Snoep, G., additional, Snyder, A., additional, Snyder, P., additional, Solano, E., additional, Solomon, W., additional, Song, J., additional, Sontag, A., additional, Soukhanovskii, V., additional, Spendlove, J., additional, Spong, D., additional, Squire, J., additional, 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Published
2022
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26. Therapeutic Use of Cytokines: Animal Models

Author

Rodrick, M. L., Moss, N. M., Gough, D. B., Horgan, P. G., Crowley, B. M., O’Riordain, M. G., Molloy, R. G., Mannick, J. A., Faist, Eugen, editor, Meakins, Jonathan L., editor, and Schildberg, Friedrich W., editor

Published
1993
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36. Global First Web Release in Clasped Thumb – An Anatomical Approach to Treatment

Author

Ng, L, Chin, Y, and Crowley, B

Subjects
musculoskeletal diseases, body regions, Arthrogryposis, ddc: 610, clasped thumb, web release, 610 Medical sciences, Medicine, congenital hand deformity
Abstract

Objectives/Interrogation: Congenital clasped thumb is a thumb flexion adduction deformity that may present as an isolated anomaly or as part of a spectrum of complex congenital anomalies. First web release may be indicated in selected cases. We present experience of our surgical technique using[for full text, please go to the a.m. URL], 14th Triennial Congress of the International Federation of Societies for Surgery of the Hand (IFSSH), 11th Triennial Congress of the International Federation of Societies for Hand Therapy (IFSHT), 11th Triennial Congress of the International Federation of Societies for Hand Therapy (IFSHT)

Published
2020
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37. Radial Polydactyly: The not so innocent floating radial duplicate

Author

Ng, L, Stevenson, S, Maraka, J, Stark, H, Lockwood, V, Diogo, R, and Crowley, B

Subjects
ddc: 610, triphalangeal, radial polydactyly, congenital hand, 610 Medical sciences, Medicine
Abstract

Objectives/Interrogation: In radial polydactyly radiological and clinical appearances can belie the underlying anatomical complexity. The floating radial duplicate we define as a radial duplicate with soft tissue attachment only to the ulnar duplicate. Such duplicates are often perceived to be [for full text, please go to the a.m. URL], 14th Triennial Congress of the International Federation of Societies for Surgery of the Hand (IFSSH), 11th Triennial Congress of the International Federation of Societies for Hand Therapy (IFSHT), 11th Triennial Congress of the International Federation of Societies for Hand Therapy (IFSHT)

Published
2020
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39. The Fungal PCR Initiative's evaluation of in-house and commercial Pneumocystis jirovecii qPCR assays: Toward a standard for a diagnostics assay

Author

Gits-Muselli, M., White, P.L., Mengoli, C., Chen, S., Crowley, B., Dingemans, G., Fréalle, E., Gorton, R., Guiver, M., Hagen, F., Halliday, C., Johnson, G., Lagrou, K., Lengerova, M., Melchers, W.J.G., Novak-Frazer, L., Rautemaa-Richardson, R., Scherer, E., Steinmann, J., Cruciani, M., Barnes, R., Donnelly, J.P., Loeffler, J., Bretagne, S., Alanio, A., Gits-Muselli, M., White, P.L., Mengoli, C., Chen, S., Crowley, B., Dingemans, G., Fréalle, E., Gorton, R., Guiver, M., Hagen, F., Halliday, C., Johnson, G., Lagrou, K., Lengerova, M., Melchers, W.J.G., Novak-Frazer, L., Rautemaa-Richardson, R., Scherer, E., Steinmann, J., Cruciani, M., Barnes, R., Donnelly, J.P., Loeffler, J., Bretagne, S., and Alanio, A.

Abstract

Contains fulltext : 226024.pdf (Publisher’s version ) (Closed access), Quantitative real-time PCR (qPCR) is increasingly used to detect Pneumocystis jirovecii for the diagnosis of Pneumocystis pneumonia (PCP), but there are differences in the nucleic acids targeted, DNA only versus whole nucleic acid (WNA), and also the target genes for amplification. Through the Fungal PCR Initiative, a working group of the International Society for Human and Animal Mycology, a multicenter and monocenter evaluation of PCP qPCR assays was performed. For the multicenter study, 16 reference laboratories from eight different countries, performing 20 assays analyzed a panel consisting of two negative and three PCP positive samples. Aliquots were prepared by pooling residual material from 20 negative or positive- P. jirovecii bronchoalveolar lavage fluids (BALFs). The positive pool was diluted to obtain three concentrations (pure 1:1; 1:100; and 1:1000 to mimic high, medium, and low fungal loads, respectively). The monocenter study compared five in-house and five commercial qPCR assays testing 19 individual BALFs on the same amplification platform. Across both evaluations and for all fungal loads, targeting WNA and the mitochondrial small sub-unit (mtSSU) provided the earliest Cq values, compared to only targeting DNA and the mitochondrial large subunit, the major surface glycoprotein or the beta-tubulin genes. Thus, reverse transcriptase-qPCR targeting the mtSSU gene could serve as a basis for standardizing the P. jirovecii load, which is essential if qPCR is to be incorporated into clinical care pathways as the reference method, accepting that additional parameters such as amplification platforms still need evaluation.

Published
2020

41. Overview of the JET neutral beam enhancement project

Author

Ćirić, D., Brown, D.P.D., Challis, C.D., Chuilon, B., Cox, S.J., Crowley, B., Day, I.E., Edwards, D.C., Evison, G., Hackett, L.J., Hotchin, S., Hudson, Z., Jenkins, I., Jones, T.T.C., King, R., Kovari, M., Martin, D., Milnes, J., Parkin, A., Puma, A. Li, Shannon, M., Stevens, A., Stork, D., Surrey, E., Waldon, C., Warren, R., Wilson, D., Young, D., and Young, I.D.

Published
2007
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