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Morgan W. Shafer, Ph.D. - Publications

Affiliations: 
2009 University of Wisconsin, Madison, Madison, WI 
Area:
Fluid and Plasma Physics
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54 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2020 Bortolon A, Maingi R, Nagy A, Ren J, Duran JD, Maan A, Donovan D, Boedo JA, Rudakov DL, Hyatt AW, Wilks TM, Shafer M, Samuell C, Fenstermacher ME, Gilson E, et al. Observations of wall conditioning by means of boron powder injection in DIII D H-mode plasmas Nuclear Fusion. DOI: 10.1088/1741-4326/Abaf31  0.469
2020 Chrystal C, Grierson B, Haskey S, Sontag A, Poli F, Shafer M, deGrassie J. Predicting the rotation profile in ITER Nuclear Fusion. 60: 036003. DOI: 10.1088/1741-4326/Ab6434  0.657
2020 Nelson AO, Laggner FM, Groebner R, Grierson BA, Izacard O, Eldon D, Shafer MW, Leonard A, Shiraki D, Sontag AC, Kolemen E. Setting the H-mode pedestal structure: Variations of particle source location using gas puff and pellet fueling Nuclear Fusion. 60: 46003. DOI: 10.1088/1741-4326/Ab5E65  0.662
2020 Casali L, Osborne TH, Grierson BA, McLean AG, Meier ET, Ren J, Shafer MW, Wang H, Watkins JG. Improved core-edge compatibility using impurity seeding in the small angle slot (SAS) divertor at DIII-D Physics of Plasmas. 27: 62506. DOI: 10.1063/1.5144693  0.472
2020 Moser AL, Casali L, Covele BM, Leonard AW, McLean AG, Shafer MW, Wang HQ, Watkins JG. Separating divertor closure effects on divertor detachment and pedestal shape in DIII-D Physics of Plasmas. 27: 032506. DOI: 10.1063/1.5109027  0.411
2019 Hollmann E, Eidietis N, Herfindal J, Parks P, Pigarov A, Shiraki D, Austin M, Bardoczi L, Baylor L, Bykov I, Carlstrom T, Kaplan D, Lasnier C, Lvovskiy A, Moser A, ... ... Shafer M, et al. Study of argon assimilation into the post-disruption runaway electron plateau in DIII-D and comparison with a 1D diffusion model Nuclear Fusion. 59: 106014. DOI: 10.1088/1741-4326/Ab32B2  0.378
2019 Du XD, Shafer MW, Evans TE, Eidietis NW, Paz-Soldan C, Humphreys DA, Strait EJ, Shiraki D, Austin ME, Hu QM, Logan NC, Barr JL, Zeeland MAV, Ohdachi S, Suzuki Y. First observation of plasma healing via helical equilibrium in tokamak disruptions Nuclear Fusion. 59: 94002. DOI: 10.1088/1741-4326/Ab30Bf  0.391
2019 Guo HY, Wang HQ, Watkins JG, Casali L, Covele B, Moser AL, Osborne T, Samuell CM, Shafer MW, Stangeby PC, Thomas DM, Boedo J, Buttery RJ, Groebner R, Hill DN, et al. First experimental tests of a new small angle slot divertor on DIII-D Nuclear Fusion. 59: 86054. DOI: 10.1088/1741-4326/Ab26Ee  0.759
2019 Du XD, Shafer MW, Hu QM, Evans TE, Strait EJ, Ohdachi S, Suzuki Y. Direct measurements of internal structures of born-locked modes and the key role in triggering tokamak disruptions Physics of Plasmas. 26: 42505. DOI: 10.1063/1.5085329  0.411
2019 Shafer M, Covele B, Canik J, Casali L, Guo H, Leonard A, Lore J, McLean A, Moser A, Stangeby P, Taussig D, Wang H, Watkins J. Dependence of neutral pressure on detachment in the small angle slot divertor at DIII-D Nuclear Materials and Energy. 19: 487-492. DOI: 10.1016/J.Nme.2019.04.003  0.385
2019 Groth M, Hollmann E, Jaervinen A, Leonard A, McLean A, Samuell C, Reiter D, Allen S, Boerner P, Brezinsek S, Bykov I, Corrigan G, Fenstermacher M, Harting D, Lasnier C, ... ... Shafer M, et al. EDGE2D-EIRENE predictions of molecular emission in DIII-D high-recycling divertor plasmas Nuclear Materials and Energy. 19: 211-217. DOI: 10.1016/J.Nme.2019.02.035  0.431
2018 Cianciosa M, Hirshman SP, Seal SK, Shafer MW. 3D equilibrium reconstruction with islands Plasma Physics and Controlled Fusion. 60: 044017. DOI: 10.1088/1361-6587/Aaaf90  0.373
2018 Wilcox RS, Rhodes TL, Shafer MW, Sugiyama LE, Ferraro NM, Lyons BC, McKee GR, Paz-Soldan C, Wingen A, Zeng L. Helical variation of density profiles and fluctuations in the tokamak pedestal with applied 3D fields and implications for confinement Physics of Plasmas. 25: 056108. DOI: 10.1063/1.5024378  0.47
2017 Wilcox RS, Wingen A, Cianciosa MR, Ferraro NM, Hirshman SP, Paz-Soldan C, Seal SK, Shafer MW, Unterberg EA. Modeling of 3D magnetic equilibrium effects on edge turbulence stability during RMP ELM suppression in tokamaks Nuclear Fusion. 57: 116003. DOI: 10.1088/1741-4326/Aa7Bad  0.711
2017 Briesemeister AR, Ahn J-, Canik JM, Fenstermacher ME, Frerichs H, Lasnier CJ, Lore JD, Leonard AW, Makowski MA, McLean AG, Meyer WH, Schmitz O, Shafer MW, Unterberg EA, Wang HQ, et al. Changes in divertor conditions in response to changing core density with RMPs Nuclear Fusion. 57: 76038. DOI: 10.1088/1741-4326/Aa70Bd  0.648
2017 Kobayashi T, Ida K, Inagaki S, Tsuchiya H, Tamura N, Choe GH, Yun GS, Park HK, Ko WH, Evans TE, Austin ME, Shafer MW, Ono M, López-bruna D, Ochando MA, et al. Analysis of higher harmonics on bidirectional heat pulse propagation experiment in helical and tokamak plasmas Nuclear Fusion. 57: 76013. DOI: 10.1088/1741-4326/Aa6F1F  0.339
2017 Lore JD, Briesemeister AR, Ferraro NM, Frerichs H, Lyons B, McLean A, Park J-, Shafer MW. Pedestal-to-wall 3D fluid transport simulations on DIII-D* Nuclear Fusion. 57: 56025. DOI: 10.1088/1741-4326/Aa64Ad  0.516
2017 Wingen A, Wilcox RS, Cianciosa MR, Seal SK, Unterberg EA, Hanson JM, Hirshman SP, Lao LL, Logan NC, Paz-Soldan C, Shafer MW. Use of reconstructed 3D VMEC equilibria to match effects of toroidally rotating discharges in DIII-D Nuclear Fusion. 57: 16013. DOI: 10.1088/0029-5515/57/1/016013  0.712
2016 Wilcox RS, Shafer MW, Ferraro NM, McKee GR, Zeng L, Rhodes TL, Canik JM, Paz-Soldan C, Nazikian R, Unterberg EA. Evidence of Toroidally Localized Turbulence with Applied 3D Fields in the DIII-D Tokamak. Physical Review Letters. 117: 135001. PMID 27715095 DOI: 10.1103/Physrevlett.117.135001  0.712
2016 Hirshman SP, Shafer MW, Seal SK, Canik JM. Investigation of island formation due to RMPs in DIII-D plasmas with the SIESTA resistive MHD equilibrium code Journal of Plasma Physics. 82. DOI: 10.1017/S0022377816000143  0.438
2015 Ida K, Kobayashi T, Evans TE, Inagaki S, Austin ME, Shafer MW, Ohdachi S, Suzuki Y, Itoh SI, Itoh K. Self-regulated oscillation of transport and topology of magnetic islands in toroidal plasmas. Scientific Reports. 5: 16165. PMID 26530273 DOI: 10.1038/Srep16165  0.37
2015 Nazikian R, Paz-Soldan C, Callen JD, deGrassie JS, Eldon D, Evans TE, Ferraro NM, Grierson BA, Groebner RJ, Haskey SR, Hegna CC, King JD, Logan NC, McKee GR, Moyer RA, ... ... Shafer MW, et al. Pedestal bifurcation and resonant field penetration at the threshold of edge-localized mode suppression in the DIII-D Tokamak. Physical Review Letters. 114: 105002. PMID 25815938 DOI: 10.1103/Physrevlett.114.105002  0.471
2015 Paz-Soldan C, Nazikian R, Haskey SR, Logan NC, Strait EJ, Ferraro NM, Hanson JM, King JD, Lanctot MJ, Moyer RA, Okabayashi M, Park JK, Shafer MW, Tobias BJ. Observation of a multimode plasma response and its relationship to density pumpout and edge-localized mode suppression. Physical Review Letters. 114: 105001. PMID 25815937 DOI: 10.1103/Physrevlett.114.105001  0.488
2015 Wingen A, Ferraro NM, Shafer MW, Unterberg EA, Canik JM, Evans TE, Hillis DL, Hirshman SP, Seal SK, Snyder PB, Sontag AC. Connection between plasma response and resonant magnetic perturbation (RMP) edge localized mode (ELM) suppression in DIII-D Plasma Physics and Controlled Fusion. 57. DOI: 10.1088/0741-3335/57/10/104006  0.794
2015 Wingen A, Shafer MW, Unterberg EA, Hill JC, Hillis DL. Regularization of soft-X-ray imaging in the DIII-D tokamak Journal of Computational Physics. 289: 83-95. DOI: 10.1016/J.Jcp.2015.02.040  0.641
2014 Wingen A, Ferraro NM, Shafer MW, Unterberg EA, Evans TE, Hillis DL, Snyder PB. Impact of plasma response on plasma displacements in DIII-D during application of external 3D perturbations Nuclear Fusion. 54: 64007. DOI: 10.1088/0029-5515/54/6/064007  0.719
2014 Shafer MW, Unterberg EA, Wingen A, Battaglia DJ, Evans TE, Ferraro NM, Harris JH, Hillis DL, Nazikian R. Plasma response measurements of non-axisymmetric magnetic perturbations on DIII-D via soft x-ray imaging Physics of Plasmas. 21. DOI: 10.1063/1.4905129  0.8
2013 Ferraro NM, Evans TE, Lao LL, Moyer RA, Nazikian R, Orlov DM, Shafer MW, Unterberg EA, Wade MR, Wingen A. Role of plasma response in displacements of the tokamak edge due to applied non-axisymmetric fields Nuclear Fusion. 53. DOI: 10.1088/0029-5515/53/7/073042  0.724
2012 Shafer MW, Fonck RJ, McKee GR, Holland C, White AE, Schlossberg DJ. 2D properties of core turbulence on DIII-D and comparison to gyrokinetic simulations Physics of Plasmas. 19. DOI: 10.1063/1.3691965  0.496
2011 Shafer MW, Battaglia DJ, Unterberg EA, Canik JM, Evans TE, Harris JH, Meitner SJ. Soft X-ray imaging design and analysis methods on DIII-D Plasma and Fusion Research. 6. DOI: 10.1585/Pfr.6.2402041  0.778
2010 Shafer MW, Battaglia DJ, Unterberg EA, Evans TE, Hillis DL, Maingi R. 2D soft x-ray system on DIII-D for imaging the magnetic topology in the pedestal region. The Review of Scientific Instruments. 81: 10E534. PMID 21034061 DOI: 10.1063/1.3481166  0.793
2010 Battaglia DJ, Shafer MW, Unterberg EA, Bell RE, Hillis DL, LeBlanc BP, Maingi R, Sabbagh S, Stratton BC. Simulation of a tangential soft x-ray imaging system. The Review of Scientific Instruments. 81: 10E533. PMID 21034060 DOI: 10.1063/1.3478883  0.791
2010 McKee GR, Fonck RJ, Shafer MW, Uzun-Kaymak IU, Yan Z. Wide-field turbulence imaging with beam emission spectroscopy. The Review of Scientific Instruments. 81: 10D741. PMID 21033932 DOI: 10.1063/1.3495788  0.625
2010 Doyle EJ, Deboo JC, Ferron JR, Jackson GL, Luce TC, Murakami M, Osborne TH, Park JM, Politzer PA, Reimerdes H, Budny RV, Casper TA, Challis CD, Groebner RJ, Holcomb CT, ... ... Shafer MW, et al. Demonstration of ITER operational scenarios on DIII-D Nuclear Fusion. 50. DOI: 10.1088/0029-5515/50/7/075005  0.466
2010 White AE, Schmitz L, Peebles WA, Rhodes TL, Carter TA, McKee GR, Shafer MW, Staebler GM, Burrell KH, Deboo JC, Prater R. Simultaneous measurement of core electron temperature and density fluctuations during electron cyclotron heating on DIII-D Physics of Plasmas. 17. DOI: 10.1063/1.3318469  0.384
2009 Shafer MW, McKee GR, Austin ME, Burrell KH, Fonck RJ, Schlossberg DJ. Localized turbulence suppression and increased flow shear near the q=2 surface during internal-transport-barrier formation. Physical Review Letters. 103: 075004. PMID 19792652 DOI: 10.1103/Physrevlett.103.075004  0.602
2009 McKee G, Gohil P, Schlossberg D, Boedo J, Burrell K, deGrassie J, Groebner R, Moyer R, Petty C, Rhodes T, Schmitz L, Shafer M, Solomon W, Umansky M, Wang G, et al. Dependence of the L- to H-mode power threshold on toroidal rotation and the link to edge turbulence dynamics Nuclear Fusion. 49: 115016. DOI: 10.1088/0029-5515/49/11/115016  0.486
2009 Schlossberg DJ, McKee GR, Fonck RJ, Burrell KH, Gohil P, Groebner RJ, Shafer MW, Solomon WM, Wang G. Dependence of the low to high confinement mode transition power threshold and turbulence flow shear on injected torque Physics of Plasmas. 16: 080701. DOI: 10.1063/1.3192766  0.615
2009 Holcomb CT, Ferron JR, Luce TC, Petrie TW, Politzer PA, Challis C, Deboo JC, Doyle EJ, Greenfield CM, Groebner RJ, Groth M, Hyatt AW, Jackson GL, Kessel C, La Haye RJ, ... ... Shafer MW, et al. Optimizing stability, transport, and divertor operation through plasma shaping for steady-state scenario development in DIII-D Physics of Plasmas. 16. DOI: 10.1063/1.3125934  0.408
2009 Holland C, White AE, McKee GR, Shafer MW, Candy J, Waltz RE, Schmitz L, Tynan GR. Implementation and application of two synthetic diagnostics for validating simulations of core tokamak turbulence Physics of Plasmas. 16. DOI: 10.1063/1.3085792  0.445
2008 White AE, Schmitz L, Peebles WA, Carter TA, Rhodes TL, Doyle EJ, Gourdain PA, Hillesheim JC, Wang G, Holland C, Tynan GR, Austin ME, McKee GR, Shafer MW, Burrell KH, et al. A correlation electron cyclotron emission diagnostic and the importance of multifield fluctuation measurements for testing nonlinear gyrokinetic turbulence simulations. The Review of Scientific Instruments. 79: 103505. PMID 19044712 DOI: 10.1063/1.2981186  0.45
2008 Shafer MW, McKee GR, Schlossberg DJ. Singular value decomposition filtering for enhanced signal extraction from two-dimensional beam emission spectroscopy measurements. The Review of Scientific Instruments. 79: 10F534. PMID 19044676 DOI: 10.1063/1.2979879  0.369
2008 McKee GR, Schlossberg DJ, Shafer MW. Ultrafast ion temperature and toroidal velocity fluctuation spectroscopy diagnostic design. The Review of Scientific Instruments. 79: 10F528. PMID 19044671 DOI: 10.1063/1.2974808  0.318
2008 Nazikian R, Fu GY, Austin ME, Berk HL, Budny RV, Gorelenkov NN, Heidbrink WW, Holcomb CT, Kramer GJ, McKee GR, Makowski MA, Solomon WM, Shafer M, Strait EJ, Zeeland MA. Intense geodesic acousticlike modes driven by suprathermal ions in a tokamak plasma. Physical Review Letters. 101: 185001. PMID 18999835 DOI: 10.1103/Physrevlett.101.185001  0.453
2008 White AE, Schmitz L, McKee GR, Holland C, Peebles WA, Carter TA, Shafer MW, Austin ME, Burrell KH, Candy J, Deboo JC, Doyle EJ, Makowski MA, Prater R, Rhodes TL, et al. Measurements of core electron temperature and density fluctuations in DIII-D and comparison to nonlinear gyrokinetic simulations Physics of Plasmas. 15. DOI: 10.1063/1.2895408  0.414
2007 McKEE GR, Fonck RJ, Gupta DK, Schlossberg DJ, Shafer MW, Boivin RL, Solomon W. Plasma Turbulence Imaging via Beam Emission Spectroscopy in the Core of the DIII-D Tokamak Plasma and Fusion Research. 2: 1025. DOI: 10.1585/Pfr.2.S1025  0.656
2006 Gupta DK, Fonck RJ, McKee GR, Schlossberg DJ, Shafer MW. Detection of zero-mean-frequency zonal flows in the core of a high-temperature tokamak plasma. Physical Review Letters. 97: 125002. PMID 17025976 DOI: 10.1103/PhysRevLett.97.125002  0.555
2006 McKee GR, Gupta DK, Fonck RJ, Schlossberg DJ, Shafer MW, Gohil P. Structure and scaling properties of the geodesic acoustic mode Plasma Physics and Controlled Fusion. 48. DOI: 10.1088/0741-3335/48/4/S09  0.604
2006 Austin ME, Burrell KH, Waltz RE, Gentle KW, Gohil P, Greenfield CM, Groebner RJ, Heidbrink WW, Luo Y, Kinsey JE, Makowski MA, McKee GR, Nazikian R, Petty CC, Prater R, ... ... Shafer MW, et al. Core barrier formation near integer q surfaces in DIII-D Physics of Plasmas. 13: 82502-82502. DOI: 10.1063/1.2245579  0.415
2006 Schlossberg DJ, Gupta DK, Fonck RJ, McKee GR, Shafer MW. Velocity fluctuation analysis via dynamic programming Review of Scientific Instruments. 77. DOI: 10.1063/1.2235169  0.572
2006 Shafer MW, Fonck RJ, McKee GR, Schlossberg DJ. Spatial transfer function for the beam emission spectroscopy diagnostic on DIII-D Review of Scientific Instruments. 77. DOI: 10.1063/1.2221908  0.6
2006 McKee GR, Fonck RJ, Gupta DK, Schlossberg DJ, Shafer MW, Boivin RL. High sensitivity beam emission spectroscopy for core plasma turbulence imaging (invited) Review of Scientific Instruments. 77. DOI: 10.1063/1.2219429  0.641
2004 McKee GR, Fonck RJ, Gupta DK, Schlossberg DJ, Shafer MW, Holland C, Tynan G. Turbulence velocimetry of density fluctuation imaging data Review of Scientific Instruments. 75: 3490-3492. DOI: 10.1063/1.1790043  0.59
2004 Gupta DK, Fonck RJ, McKee GR, Schlossberg DJ, Shafer MW. Enhanced sensitivity beam emission spectroscopy system for nonlinear turbulence measurements Review of Scientific Instruments. 75: 3493-3495. DOI: 10.1063/1.1787951  0.606
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