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Michael Sumption

  • Professor, Materials Science Engineering
  • MSE Undergrad Studies Chair
  • 2041 College Rd
    Columbus, OH 43210
  • 614-688-3684

About

Mike Sumption serves as the associate director of the Center for Superconducting and Magnetic Materials, as well as the Superconducting Technology Center. Dr. Sumption’s background is in materials science and solid state physics. His area of research is materials physics with a concentration in superconductive, electronic, and magnetic materials, with particular interests in:

(i) high performance Nb3Sn, A15 phase formation, and transport properties,
(ii) MgB2 materials, with a focus on formation as well as dopant-induced enhancements of the upper critical fields and the related structural and transport properties,
(iii) Bi:2212 strands and their transport properties
(iv) nanoscale artificial pin structures in multilayer YBCO,
(v) magnetization, AC Losses, flux jumping, and current/field instabilities in superconducting strands,
(vi) flux pinning and connectivity in Nb3Sn and MgB2,
(vi) NbTi, Nb3Sn, Bi:2212, and YBCO-based cables in terms of loss, ICR, and current sharing related to HEP magnet applications.
(vii) oxipnictides, and
(viii) electronic materials and applications.

Efforts in modelling have included stability in Nb3Sn conductors and magnets, anisotropic continuum modeling of bridging and connectivity in superconducting composite structures, field modelling in coils, synergistic pinning in composites, AC loss in various conductors, and fault current limiter design. Materials studies have included rapid quenching and mechanical alloying in Nb3Al, proximity effects in NbTi, and the development of a new class of Nb3Sn strands.

Dr. Sumption’s research has been funded by various organizations, including the US Department of Energy, Division of High Energy Physics, NASA, the Navy, AFOSR, NIH, NRC, the Ohio Department of Development, and private industry. A number of national and international collaborations are ongoing, with universities, national labs, and industry. Dr. Sumption more than 225 publications, and serves on the editorial board of Superconducting Science and Technology and Cryogenics.

 

Honors

  • 20070101

    Lumley Research Award.

  • 19930101

    Award for best student paper.

Journal Articles

2018

  • Collings, E.W.; Sumption, M.D.; Majoros, M.; Wang, X. et al., 2018, "Influence of Compaction During Reaction Heat Treatment on the Interstrand Contact Resistances of Nb3Sn Rutherford Cables." IEEE Transactions on Applied Superconductivity

2017

  • Xu, X.; Peng, X.; Sumption, M.; Collings, E.W., 2017, "Recent Progress in Application of Internal Oxidation Technique in Nb3Sn Strands." IEEE Transactions on Applied Superconductivity 27, no. 4,
  • Parizh, M.; Lvovsky, Y.; Sumption, M., 2017, "Conductors for commercial MRI magnets beyond NbTi: Requirements and challenges." Superconductor Science and Technology 30, no. 1,
  • Baig, T.; Al Amin, A.; Deissler, R.J.; Sabri, L. et al., 2017, "Conceptual designs of conduction cooled MgB2magnets for 1.5 and 3.0 T full body MRI systems." Superconductor Science and Technology 30, no. 4,

2014

  • Xu,Xingchen; Collings,Edward; Sumption,Michael; Kovacs,Chris; Peng,Xuan, 2014, "The Effects of Ti Addition and High Cu/Sn Ratio on Tube Type (Nb, Ta)(3)Sn Strands, and a New Type of Strand Designed to Reduce Unreacted Nb Ratio." IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 24, no. 3, 6000904 - 6000904.
  • Susner,M,A; Carnevale,S,D; Kent,T,F; Gerber,L,M; Phillips,P,J; Sumption,M,D; Myers,R,C, 2014, "Catalyst-free ZnO nanowires on silicon by pulsed laser deposition with tunable density and aspect ratio." PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES 62, 95-103 - 95-103.

2011

  • Bohnenstiehl, S.D.; Susner, M.A.; Yang, Y.; Collings, E.W. et al., 2011, "Carbon doping of MgB2 by toluene and malic-acid-in-toluene." Physica C: Superconductivity 471, no. 3-4, 108-111 - 108-111.

2009

  • Gregory,Eric; Tomsic,Michael; Peng,Xuan; Sumption,Mike,D; Ghosh,Arup, 2009, "Nb3Sn Superconductors Made by an Economical Tubular Process." IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 19, no. 3, 2602-2605 - 2602-2605.
  • Bhartiya,S; Sumption,Mike,D; Peng,Xuan; Gregory,Eric; Tomsic,Michael,J; Collings,Edward,W, 2009, "Investigation of the Effects of Low Temperature Heat Treatments on the Microstructure and Properties of Multifilamentary, Tube-Type Nb3Sn Strands." IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 19, no. 3, 2588-2592 - 2588-2592.

2007

  • C.V. Varanasi, J. Burke, L. Brunke, H. Wang, M. Sumption, and P.N. Barnes, 2007, "Enhancement and Angular Dependence of Transport Critical Current Density in Pulsed Laser Deposited YBa2Cu3O7-x+BaSnO3 Films in Applied Magnetic Fields." J. Appl. Phys. 102, 063909 - 063909.
  • M.D. Sumption, S. Kawabata, and E.W. Collings, 2007, "AC Loss in YBCO Coated Conductors Exposed to External Magnetic Fields at 50-200 Hz." Physica C 466, no. (1-2), 29-36 - 29-36.

2004

  • M. Bhatia, M.D. Sumption, M. Tomsic, and E.W. Collings, 2004, "Influence of Heat Treatment Schedules on Magnetic Jc and Phase Formation in Bulk MgB2." Physica C 415, 158-162 - 158-162.
  • Haugan, T.; Barnes, P.N.; Wheeler, R.; Meisenkothen, F. et al., 2004, "Addition of nanoparticle dispersions to enhance flux pinning of the YBa2Cu3O7-x superconductor.." Nature 430, no. 7002, 867-870 - 867-870.
  • M.D. Sumption and E.W. Collings, 2004, "Stability and Instability in High Performance (Metastable) Composite Strands During I-V Measurement." Physica C 401, 66-74 - 66-74.

2003

  • T. Haugan, P.N. Barnes, I. Maartense, C.B. Cobb, E.J. Lee, and M.D. Sumption, 2003, "Island Growth Of Y2BaCuO5 Nanoparticles in (211(~1.5 nm)/123(~10nm))Xn Composite Multilayer Structures to Enhance Flux Pinning of YBa2Cu3O7-ï�¤ Films." J. Mat. Res. 18, 2618-2623 - 2618-2623.

2002

  • C.B. Cobb, P.N. Barnes, T.J. Haugan, J. Tolliver, E. Lee, M.D. Sumption, E.W. Collings, and C.E. Oberly, 2002, "Hysteretic Loss Reduction in Striated YBCO." Physica C 382, 52-56 - 52-56.

2001

  • M.D. Sumption, E.W. Collings, R.M. Scanlan, S.W. Kim, M. Wake, T. Shintomi, A. Nijhuis, and H.H.J. Ten Kate, 2001, "AC Loss in Cored Stabrite Cables in Response to External Compaction and Variation of Core Thickness and Width." Cryogenics 41, 733-744 - 733-744.
  • F. Buta, M.D. Sumption, and E.W. Collings, 2001, "Studies for Processing Nb3Al Using a Rapid Ohmic-Heating and Quenching Method." IEEE Trans. Appl. Supercond. 11, 3980-3983 - 3980-3983.

2000

  • Sumption, M.D.; Scanlan, R.M.; Nijhuis, A.; Collings, E.W., 2000, "AC loss and contact resistance in copperstabilized nb3al rutherford cables with and without a stainless steel core." IEEE Transactions on Applied Superconductivity 10, no. 1, 11961199 - 11961199.

1997

  • Sumption, M.D.; Collings, E.W.; Gulko, E.; Pyon, T. et al., 1997, "Analysis of Optically and Magnetically Determined Bridging in Internal-Tin Process Nb3Sn Strands." IEEE Transactions on Applied Superconductivity 7, no. 2 PART 2, 1368-1371 - 1368-1371.
  • Collings, E.W.; Sumption, M.D.; Kirn, S.W.; Wake, M. et al., 1997, "Suppression and control of coupling currents in stabrite-coated rutherford cable with cores of various materials and thicknesses." IEEE Transactions on Applied Superconductivity 7, no. 2 PART 1, 962-966 - 962-966.
  • M.D. Sumption, and E.W. Collings, 1997, "Effect Current Strengths in NbTi Multifilamentary Samples with and without Nb Barriers and Processed Under Various Conditions." IEEE Trans. Appl. Supercond. 7, 1117-1121 - 1117-1121.
  • Sumption, M.D., 1997, "Proximity effect current strengths in nbti multifilamentary samples with and without Nb barriers and processed under various conditions." IEEE Transactions on Applied Superconductivity 7, no. 2 PART 2, 1117-1121 - 1117-1121.

1995

  • L.R. Motowidlo, G. Galinsky, G. Ozeryansky, W. Zhang, E.E. Hellstrom, M.D. Sumption, and E.W. Collings, 1995, "The Influence of Filament Size and Atmosphere on the Microstructure and Jc of Round Filament Bi2Sr2Ca1Cu2Ox Wires." IEEE Trans. Applied Supercond. 5, 1162 - 1162.

1993

  • M.D. Sumption, K.R. Marken, Jr., and E.W. Collings, 1993, "Enhanced Static Magnetization and Creep in SCC-Type Strands via Cable and Twist Pitch Assisted Proximity Effects." IEEE Trans. Appl. Supercond. 3, 751-756 - 751-756.
  • M.D. Sumption and E.W. Collings, 1993, "Innovative Strand Design for Accelerator Magnets." Int. J. Mod. Phys. A no. Proc. Suppl. 2B, 662-664 - 662-664.

1992

  • E.W. Collings and M.D. Sumption, 1992, "AC Loss and Transverse Resistivity in Multifilamentary Strands with Matrices of Cu and CuMn." Cryogenics 32, 585-588 - 585-588.

Unknown

  • Sumption, M.D.; Bhatia, M.; Rindfleisch, M.; Phillips, J. et al., "MgB2/Cu Racetrack Coil: Winding and Transport Testing."
  • Sumption, M.D.; Peng, X.; Lee, E.; Tomsic, M. et al., "Transport Current in MgB2 based Superconducting Strand at 4.2 K and Self-Field."

Presentations

  • "Stability in Nb3Sn -- Explicit Functional Dependence of Js on deff and RRR, Local RRR Degradation, Adiabatic considerations." 2007, Presented at The Low Temperature Superconductor Workshop,
  • "Phase Formation and Performance Potential in Tube-Type Nb3Sn." 2007, Presented at The Low Temperature Superconductor Workshop,
  • "Effects of Simultaneous Titanium and Tantalum Additions on The Properties of Internal - Tin Type Nb3Sn Strands." 2007, Presented at The 20th International Conference on Magnet Technology,
  • "AC Loss in YBCO and MgB2 Conductors: External Field loss, Transport losses, Influence of Magnetic Elements and Dynamic Resistance." 2007, Presented at MRS Spring Meeting,
  • "YBCO Loss Measurements and Analysis for AFRL needs." 2007, Presented at AFRL Review,
  • "AC Loss for YBCO and MgB2 for Various Applications – i.e. How bad is YBCO? When is (round) MgB2 needed?." 2007, Presented at The European Applied Superconductivity Conference,
  • "Superconductivity, Superconductors, and Energy Needs." 2009, Presented at ENCOMM,
  • "OSU-FNAL Collaboration Presentation." 2009,
  • "Homogeneity and Connectivity of Doped MgB2 Bulks and Strands as Probed by Cp and Current Transport." 2009, Presented at APS March meeting,
  • "Losses in YBCO Strands/Cables and Quench in YBCO Coils." 2009, Presented at 9th European Applied Superconductivity Conference,
  • "NbAl and MgB2 Development in the US." 2002, Presented at Conference on New Materials,
  • "Proposal for a Round Robin for AC Loss Measurements in YBCO Coated Conductors." 2003, Presented at the VAMAS Versilles Agreement on Measurements and Standards,
  • "MgB2 Applications in the US." 2004, Presented at SCEnet,
  • "YBCO at High Frequencies for Air Force Applications." 2005, Presented at Workshop for Coated Conductors and Applications,
  • "AC Loss for YBCO and MgB2." 2007, Presented at The US-Japan Workshop,
  • "AC Loss For YBCO and MgB2 for Various Applications – i.e. How bad is YBCO? When is (round) MgB2 needed?." 2007, Presented at the International Symposium on Superconductivity,
  • "Stability in Nb3Sn -- Explicit Functional Dependence of Js on deff and RRR, Local RRR Degradation, Adiabatic considerations." 2008, Presented at the Workshop on Accelerator Magnet Design and Optimization, CERN,
  • "MgB2 Superconducting Strands: Bc2, Birr, Doping, Connectivity, Phase Formation, Flux Pinning." 2008, Presented at APS March meeting,
  • "Thermal diffusion and Quench Propagation in YBCO Coils with ZnO-Based Insulations." 2008, Presented at AFRL Review,
  • "Transport, flux pinning, and connectivity in MgB2." 2008, Presented at NIMS Week,
  • "Influence of Artificial Nanostructure Pinning on the Critical Current Density in YBa2Cu3O7-x Thin Films." 2009, Presented at The Materials Research Society Meeting,
  • "Flux Pinning, Homogeneity, and Connectivity of Doped MgB2 Bulks and Strands." 2009, Presented at The Materials Research Society Meeting,
  • "Model Superconducting Helical Undulators Wound from Wind and React MgB2 and Nb3Sn Conductors." 2009, Presented at The 21st International Magnet Technology Conference,
  • "MgB2 Materials and Applications." 2009,
  • "Losses in YBCO Strands/Cables and Quench in YBCO Coils." 2009,
  • "MgB2; Niche Application or New Conductor." 2005, Presented at MT19,
  • "MgB2 Conductor Development." 2005, Presented at the US-Japan Workshop,
  • "Losses in YBCO Conductors." 2005, Presented at the US-Japan Workshop,
  • "AC Loss For YBCO Coated Conductor In Utility Power Applications." 2006, Presented at The Electric Power Research Institute Workshop, Sixth Annual EPRI Superconductivity Conference and Task Force Meeting,
  • "Loss and Stability Issues for YBCO and MgB2 in Motors/Generators -- a Simplified Look." 2009, Presented at NASA Workshop on Distributed Turboelectric Propulsion for Large Transport Aircraft,
  • "Flux Pinning, Homogeneity, and Connectivity of Doped MgB2 Bulks and Strands." 2009, Presented at The International Cryogenic Materials Conference,
  • "Stability in Nb3Sn Conductors; Magnetic and Self Field Instability Considerations at 4 K And 2 K." 2009, Presented at The International Cryogenic Materials Conference,

Papers in Proceedings

2017

  • Zhang, D.; Li, X.; Wan, F.; Thong, C.J. et al. "Influence of oxygen doping on critical fields in MgB2bulk superconductors." (12 2017).
  • Kim, H.S.; Kovacs, C.; Rochester, J.; Sumption, M.D. et al. "Measurement of a Conduction Cooled Nb3Sn Racetrack Coil." (12 2017).
  • Dong, K.; Sumption, M.; Collings, E.W.; Majoros, M. et al. "Influence of field penetration ratios and filamentation on end-effect related hysteretic loss reductions for superconducting strips." (12 2017).
  • Collings, E.W.; Sumption, M.D.; Myers, C.S.; Wang, X. et al. "Persistent-current magnetizations of Nb3Sn Rutherford cables and extracted strands." (12 2017).
  • Wan, F.; Sumption, M.D.; Rindfleisch, M.A.; Collings, E.W. "Pressure-induced property improvement of magnesium diboride wire." (12 2017).
  • Dong, K.; Sumption, M.; Collings, E.W.; Majoros, M. et al. "Influence of field penetration ratios and filamentation on end-effect related hysteretic loss reductions for superconducting strips." (1 2017).
  • Collings, E.W.; Sumption, M.D.; Myers, C.S.; Wang, X. et al. "Persistent-current magnetizations of Nb3Sn Rutherford cables and extracted strands." (1 2017).
  • Dong, K.; Sumption, M.; Collings, E.W.; Majoros, M. et al. "Influence of field penetration ratios and filamentation on end-effect related hysteretic loss reductions for superconducting strips." in Joint Cryogenic Engineering Conference (CEC) / International Cryogenic Materials Conference. (1 2017).
  • Collings, E.W.; Sumption, M.D.; Myers, C.S.; Wang, X. et al. "Persistent-current magnetizations of Nb3Sn Rutherford cables and extracted strands." in Joint Cryogenic Engineering Conference (CEC) / International Cryogenic Materials Conference. (1 2017).

2016

  • Loder, D.; Sanchez, R.; Feddersen, M.; Haran, K. et al. "A conduction cooled Nb3Sn racetrack coil: Design, construction, and testing." (4 2016).

2015

  • Majoros, M.; Sumption, M.D.; Collings, E.W.; Long, N.J. "Inter-strand current sharing and ac loss measurements in superconducting YBCO Roebel cables." (5 2015).
  • Majoros, M.; Sumption, M.D.; Collings, E.W.; Long, N.J. "Inter-strand current sharing and ac loss measurements in superconducting YBCO Roebel cables." in 4th International Workshop on Numerical Modelling of High Temperature Superconductors (HTSs)3. (5 2015).
  • Majoros, M.; D Sumption, M.; Collings, E.W.; Long, N.J. "Inter-strand current sharing and ac loss measurements in superconducting YBCO Roebel cables." (5 2015).

2012

  • Collings, E.W.; Sumption, M.D.; Susner, M.A.; Dietderich, D.R. et al. "MAGNETIC MEASUREMENT OF INTERSTRAND CONTACT RESISTANCE AND PERSISTENT-CURRENT MAGNETIZATION OF Nb3Sn RUTHERFORD CABLES WITH CORES OF MgO TAPE AND WOVEN S-GLASS RIBBON." in Joint Conference on Transactions of the Cryogenic Engineering Conference (CEC)/International Cryogenic Materials Conference (ICMC). (1 2012).
  • Mentink, M.G.T.; Dhalle, M.M.J.; Dietderich, D.R.; Godeke, A. et al. "The effect of Ta and Ti additions on the strain sensitivity of bulk Niobium-Tin`." (1 2012).
  • Collings, E.W.; Sumption, M.D.; Susner, M.A.; Dietderich, D.R. et al. "Interstrand Contact Resistance and Magnetization of Nb3Sn Rutherford Cables With Cores of Different Materials and Widths." (6 2012).
  • Kim, H.S.; Sumption, M.D.; Lim, H.; Collings, E.W. "ANALYSIS OF MATERIALS PROPERTIES OF NIOBIUM TUBE FROM THE RESULTS OF A VIRTUAL BULGE TEST." (1 2012).
  • Mentink, M.G.T.; Dhalle, M.M.J.; Dietderich, D.R.; Godeke, A. et al. "The effect of Ta and Ti additions on the strain sensitivity of bulk Niobium-Tin`." in Superconductivity Centennial Conference (SCC). (1 2012).
  • Majoros, M.; Sumption, M.D.; Collings, E.W. "Stability and Normal Zone Propagation in a 50 Tesla Solenoid Wound of YBCO Coated Conductor Tape-FEM Modeling." (6 2012).
  • Majoros, M.; Sumption, M.D.; Collings, E.W. "Stability and normal zone propagation in a 50 tesla solenoid wound of YBCO coated conductor tape-FEM modeling." (6 2012).
  • Collings, E.W.; Sumption, M.D.; Susner, M.A.; Dietderich, D.R. et al. "Interstrand contact resistance and magnetization of Nb 3Sn Rutherford cables with cores of different materials and widths." (6 2012).
  • Collings, E.W.; Sumption, M.D.; Susner, M.A.; Dietderich, D.R. et al. "MAGNETIC MEASUREMENT OF INTERSTRAND CONTACT RESISTANCE AND PERSISTENT-CURRENT MAGNETIZATION OF Nb3Sn RUTHERFORD CABLES WITH CORES OF MgO TAPE AND WOVEN S-GLASS RIBBON." (1 2012).
  • Collings, E.W.; Sumption, M.; Susner, M.A.; Dietderich, D.R. et al. "Magnetic measurement of interstrand contact resistance and persistent-current magnetization of Nb3Sn Rutherford cables with cores of MgO tape and woven S-glass ribbon." (12 2012).
  • Majoros, M.; Sumption, M.D.; Collings, E.W. "Stability and Normal Zone Propagation in a 50 Tesla Solenoid Wound of YBCO Coated Conductor Tape-FEM Modeling." in 22nd International Conference on Magnet Technology (MT). (6 2012).
  • Kim, H.S.; Sumption, M.; Lim, H.; Collings, E.W. "Analysis of materials properties of niobium tube from the results of a virtual bulge test." (12 2012).
  • Collings, E.W.; Sumption, M.D.; Susner, M.A.; Dietderich, D.R. et al. "Interstrand Contact Resistance and Magnetization of Nb3Sn Rutherford Cables With Cores of Different Materials and Widths." in 22nd International Conference on Magnet Technology (MT). (6 2012).
  • Kim, H.S.; Sumption, M.D.; Lim, H.; Collings, E.W. "ANALYSIS OF MATERIALS PROPERTIES OF NIOBIUM TUBE FROM THE RESULTS OF A VIRTUAL BULGE TEST." in Joint Conference on Transactions of the Cryogenic Engineering Conference (CEC)/International Cryogenic Materials Conference (ICMC). (1 2012).
  • Mentink, M.G.T.; Dhalle, M.M.J.; Dietderich, D.R.; Godeke, A. et al. "The effect of Ta and Ti additions on the strain sensitivity of bulk niobium-tin." (1 2012).

2010

  • Collings, E.W.; Sumption, M.D.; Susner, M.A.; Barzi, E. et al. "Coupling-and persistent-current magnetizations of Nb3Sn rutherford cables." (6 2010).
  • Majoros, M.; Sumption, M.D.; Susner, M.A.; Bhartiya, S. et al. "A Nb3Sn-based, model superconducting helical undulator fabricated using a wind and react process." (6 2010).
  • Bhartiya, S.; Sumption, M.D.; Peng, X.; Gregory, E. et al. "COMPARISON OF A15 STOICHIOMETRY AND GRAIN MORPHOLOGY IN INTERNAL Sn AND TUBE TYPE STRANDS; INFLUENCE OF STRAND DESIGN, HTs AND ALLOYING." (1 2010).
  • Collings, E.W.; Sumption, M.D.; Susner, M.A.; Dietderich, D.R. et al. "COUPLING-CURRENT AND PERSISTENT-CURRENT MAGNETIZATIONS IN Nb3Sn RUTHERFORD CABLES AND STRANDS." (1 2010).
  • Majoros, M.; Sumption, M.D.; Susner, M.A.; Bhartiya, S. et al. "A Nb3Sn-Based, Model Superconducting Helical Undulator Fabricated Using a Wind and React Process." (6 2010).
  • Collings, E.W.; Sumption, M.D.; Susner, M.A.; Barzi, E. et al. "Coupling- and Persistent-Current Magnetizations of Nb3Sn Rutherford Cables." (6 2010).
  • Marzik, J.V.; Lewis, R.C.; Nickles, M.R.; Finnemore, D.K. et al. "PLASMA SYNTHESIZED BORON NANO-SIZED POWDER FOR MgB2 WIRES." (1 2010).
  • Marzik, J.V.; Lewis, R.C.; Nickles, M.R.; Finnemore, D.K. et al. "Plasma synthesized boron nano-sized powder for MgB2 wires." (9 2010).
  • Marzik, J.V.; Lewis, R.C.; Nickles, M.R.; Finnemore, D.K. et al. "PLASMA SYNTHESIZED BORON NANO-SIZED POWDER FOR MgB2 WIRES." in Joint Cryogenic Engineering Conference/International Cryogenic Materials Conference. (1 2010).
  • Varanasi, C.V.; Reichart, J.; Burke, J.; Wang, H. et al. "SECOND PHASE (BaGeO3, BaSiO3) NANOCOLUMNS IN YBa2Cu3O7-x FILMS." (1 2010).
  • Varanasi, C.V.; Reichart, J.; Burke, J.; Wang, H. et al. "SECOND PHASE (BaGeO3, BaSiO3) NANOCOLUMNS IN YBa2Cu3O7-x FILMS." in Joint Cryogenic Engineering Conference/International Cryogenic Materials Conference. (1 2010).
  • Varanasi, C.V.; Reichart, J.; Burke, J.; Wang, H. et al. "Second phase (BaGeO3, BaSiO3) nanocolumns in YBa 2Cu3O7-x films." (9 2010).
  • Collings, E.W.; Sumption, M.D.; Susner, M.A.; Barzi, E. et al. "Coupling- and Persistent-Current Magnetizations of Nb3Sn Rutherford Cables." in 21st International Conference on Magnet Technology (MT-21). (6 2010).
  • Collings, E.W.; Sumption, M.D.; Susner, M.A.; Dietderich, D.R. et al. "COUPLING-CURRENT AND PERSISTENT-CURRENT MAGNETIZATIONS IN Nb3Sn RUTHERFORD CABLES AND STRANDS." in Joint Cryogenic Engineering Conference/International Cryogenic Materials Conference. (1 2010).
  • Majoros, M.; Sumption, M.D.; Susner, M.A.; Bhartiya, S. et al. "A Nb3Sn-Based, Model Superconducting Helical Undulator Fabricated Using a Wind and React Process." in 21st International Conference on Magnet Technology (MT-21). (6 2010).
  • Bhartiya, S.; Sumption, M.D.; Peng, X.; Gregory, E. et al. "Comparison of A15 stoichiometry and grain morphology in internal Sn and tube type strands; Influence of strand design, HTS and alloying." (9 2010).
  • Bhartiya, S.; Sumption, M.D.; Peng, X.; Gregory, E. et al. "COMPARISON OF A15 STOICHIOMETRY AND GRAIN MORPHOLOGY IN INTERNAL Sn AND TUBE TYPE STRANDS; INFLUENCE OF STRAND DESIGN, HTs AND ALLOYING." in Joint Cryogenic Engineering Conference/International Cryogenic Materials Conference. (1 2010).
  • Collings, E.W.; Sumption, M.D.; Susner, M.A.; Dietderich, D.R. et al. "Coupling-current and persistent-current magnetizations in Nb3Sn Rutherford cables and strands." (9 2010).

2009

  • Collings, E.W.; Sumption, M.D. "Interstrand coupling and magnetization in Nb3Sn rutherford cables." (1 2009).

2007

  • Majoras, M.; Ye, L.; Campbell, A.M.; Coombs, T.A. et al. "Fault current limiting properties of MgB2 superconducting wires." (6 2007).

2006

  • M.D. Sumption, A. Contractor, S. Kawabata, and E.W. Collings "AC Loss (50-200 Hz) in YBCO Conductors with Filaments and Cu Stabilization." in Adv. Cryo. Eng.. (1 2006).

2005

  • Barnes, P.N.; Rhoads, G.L.; Tolliver, J.C.; Sumption, M.D. et al. "Compact, lightweight, superconducting power generators." (1 2005).
  • Barnes, P.N.; Rhoads, G.L.; Tolliver, J.C.; Sumption, M.D. et al. "Compact, lightweight, superconducting power generators." (1 2005).
  • Barnes, P.N.; Rhoads, G.L.; Tolliver, J.C.; Sumption, M.D. et al. "Compact, lightweight, superconducting power generators." in 12th International Electronmagnetic Launch Technology Symposium. (1 2005).
  • Sumption, M.D.; Barnes, P.N.; Collings, E.W. "AC losses of coated conductors in perpendicular fields and concepts for twisting." (6 2005).

2004

  • Sumption, M.D.; Peng, X.; Collings, E.W. "Magnetization and d(eff) in HEP relevant RIT type Nb3Sn strands - influence of internal barriers." (1 2004).
  • Hascicek, Y.S.; Aslanoglu, Z.; Arda, L.; Akin, Y. et al. "Fabrication and testing of W&R MgB2 coils using CTFF Cu/M9B2 wires and the sol-gel insulation process.." (1 2004).
  • Hascicek, Y.S.; Aslanoglu, Z.; Arda, L.; Akin, Y. et al. "Fabrication and testing of W&R MgB2 coils using CTFF Cu/M9B2 wires and the sol-gel insulation process.." in Joint Cryogenic Engineering Conference/International Cryogenic Materials Conference (CEC-ICMC). (1 2004).
  • M.D. Sumption, X. Peng, and E.W. Collings "Magnetization and deff in HEP Relevant Nb3Sn Strands-Influence of Interfilamentary Barriers." in Adv. Cryo. Eng.. (1 2004).
  • E. Lee, M.D. Sumption, E.W. Collings "Finite Element Modeling of AC Losses in Rutherford Cables with and without Resistive Cores." in Adv. Cryo. Eng.. (1 2004).
  • Lee, E.; Sumption, M.D.; Collings, E.W. "FEM modeling of AC loss in rutherford cables with and without resistive cores." (1 2004).
  • Lee, E.; Sumption, M.D.; Collings, E.W. "FEM modeling of AC loss in rutherford cables with and without resistive cores." in Joint Cryogenic Engineering Conference/International Cryogenic Materials Conference (CEC-ICMC). (1 2004).
  • Sumption, M.D.; Peng, X.; Collings, E.W. "Magnetization and d(eff) in HEP relevant RIT type Nb3Sn strands - influence of internal barriers." in Joint Cryogenic Engineering Conference/International Cryogenic Materials Conference (CEC-ICMC). (1 2004).

2003

  • Sumption, M.D.; Lee, E.; Cobb, C.B.; Barnes, P.N. et al. "Hysteretic loss vs. filament width in thin YBCO films near the penetration field." (6 2003).
  • Sumption, M.D.; Collings, E.W.; Scanlan, R.M.; Nijhuis, A. "AC loss of Nb3Sn-based rutherford cables with internally and externally added Cu." (6 2003).
  • Sumption, M.D.; Collings, E.W.; Scanlan, R.M.; Nijhuis, A. "AC loss of Nb3Sn-based Rutherford cables with internally and externally added Cu." in Applied Superconductivity Conference. (6 2003).
  • Sumption, M.D.; Collings, E.W.; Scanlan, R.M.; Nijhuis, A. "AC loss of Nb3Sn-based Rutherford cables with internally and externally added Cu." (6 2003).

2002

  • S.X. Dou, S. Soltanian, X.L. Wang, I. Kusevic, E. Babic, A.H. Li, M.J. Qin, J. Horvat, K.K. Liu, E.W. Collings, and M.D. Sumption "High Transport Critical Current Density Above 30 K in MgB2 Tape with Magnetic Shielding." in Adv. Cryo. Eng.. (1 2002).

2001

  • Buta, F.; Sumption, M.D.; Tomsic, M.; Hascicek, Y. et al. "Optimization studies for processing Nb3Al by a rapid ohmic-heating and quenching method." in 2000 Applied Superconductivity Conference. (3 2001).
  • Buta, F.; Sumption, M.D.; Tomsic, M.; Hascicek, Y. et al. "Optimization studies for processing Nb3Al by a rapid ohmic-heating and quenching method." (3 2001).
  • Buta, F.; Sumption, M.D.; Tomsic, M.; Hascicek, Y. et al. "Optimization studies for processing Nb3Al by a rapid ohmic-heating and quenching method." (3 2001).

2000

  • M.D. Sumption, and E.W. Collings "Aspect Ratio Dependence of Effective Transverse Matrix Resistivity in Multifilamentary HTSC/Ag Strands." in Advances in Superconductivity XII. (1 2000).
  • F. Buta, M.D. Sumption, E.W. Collings, and M. Tomsic "Progress in the Pilot Scale Production of High-Temperature Processed Nb3Al Strand." in Adv. Cryo. Eng.. (1 2000).

1999

  • Sumiyoshi, F.; Kawabata, S.; Gohda, T.; Kawagoe, A. et al. "AC losses in Nb3Sn Rutherford cables with a stainless steel core." in 1998 Applied Superconductivity Conference. (6 1999).
  • Sumiyoshi, F.; Kawabata, S.; Gohda, T.; Kawagoe, A. et al. "AC losses in Nb3Sn Rutherford cables with a stainless steel core." (6 1999).
  • Sumiyoshi, F.; Kawabata, S.; Gohda, T.; Kawagoe, A. et al. "AC losses in Nb3Sn rutherford cables with a stainless steel core." (12 1999).

1998

  • E.W. Collings, M.D. Sumption, R.M. Scanlan, D.R. Dietderich, L.R. Motowidlo, R.S. Sokolowski, Y. Aoki, and T. Hasegawa "Design, Processing, and Properties of Bi:2212/Ag Rutherford Cables." in Superconductivity XI. (1 1998).
  • E.W. Collings, F. Buta, M.D. Sumption, E. Gregory, and M. Tomsic "Melt Quenched Nb3al Processing and Properties." in Proc. Workshop on Nb3Al Superconductor and its Applications. (4 1998).

1997

  • E.W. Collings, M.D. Sumption, R.M. Scanlan, S.W. Kim, M. Wake, and T. Shintomi "Magnetic Studies of AC Loss in Pressurized Rutherford Cables with Coated Strands and Resistive Cores." in Adv. Cryo. Eng.. (1 1997).
  • E.W. Collings, M.D. Sumption, S. Kim, M. Wake, and T. Shintomi "Suppression of Eddy Current Loss in Bare-Copper Rutherford Cables Using Stainless Steel Cores of Various Thicknesses." in Proc. 16thICEC/ICMC Conference. (1 1997).
  • Sumption, M.D.; Collings, E.W. "Proximity effect current strengths in NbTi multifilamentary samples with and without Nb barriers and processed under various conditions." (6 1997).
  • M. D. Sumption, E. W. Collings, N.V. Vo, and S. X. Dou "Eddy Current and Creep-Based Losses in CTFF-Type Bi:2223/Ag Multifilamentary Tapes." in Proc. 16thICEC/ICMC Conference. (1 1997).
  • Sumption, M.D.; Collings, E.W. "Proximity effect current strengths in NbTi multifilamentary samples with and without Nb barriers and processed under various conditions." in 1996 Applied Superconductivity Conference. (6 1997).
  • M.D. Sumption, L.R. Motowidlo, G. Ozeryansky, G. Galinsky, and E.W. Collings "Critical Current, Flux Pinning, and Hysteretic Loss in Round Multifilamentary Bi:2212/Ag Strands." in Adv. Cryo. Eng.. (1 1997).
  • M.D. Sumption, H. Liu, E. Gregory, and E.W. Collings "Enhanced Proximity Effect Coupling Due to the Presence of a Nb Barrier in Fine NbTi Multifilamentary Composites." in Adv. Cryo. Eng.. (1 1997).
  • M.D. Sumption, R.M. Scanlan, A. Nijhuis, H.H.J. Ten Kate and E.W. Collings "Calorimetric Measurements of the Effect of Nickel and Stabrite Coatings and Resistive Cores on AC Loss in Accelerator Cables Under Fixed Pressure." in Adv. Cryo. Eng.. (1 1997).

1995

  • E.W. Collings and M.D. Sumption "A Study of AC Losses in HTSC/Ag Multifilamentary Strands." in Proc. 7th Us-Japan Workshop on High-Tc Superconductors. (10 1995).
  • M.D. Sumption and E.W. Collings "Bridging in Superconductors." in Critical State in Superconductors. (1 1995).
  • E.W. Collings and M.D. Sumption "Flux Jump Stability During Magnetization of Bulk YBCO and Internal Mechanical Stresses in The Trapped Critical State." in Advances in Superconductivity VII. (1 1995).
  • H. Liu, S.X. Dou, M.D. Sumption and E.W. Collings "Microstructure Development and Phase Transformation of Ag-Sheathed Bi:2223 Tapes." in Superconductivity and Superconducting Materials Technologies. (1 1995).
  • M.D. Sumption, L.R. Motowidlo, G. Ozeryansky, G. Galinsky, and E.W. Collings "Bi:2212 Multifilamentary Round Wires -- Intrinsic and Extrinsic Jc Limitations, Comparisons to Monocrystal Properties." in Advances in Superconductivity VII. (1 1995).

1994

  • M.D. Sumption and E.W. Collings "Stability, Mechanical Considerations, and AC Loss in HTSC Monoliths, Coils, and Wires." in Proc. of the 4th World Congress on Superconductivity, NASA. (1 1994).
  • M.D. Sumption, K. Salama, T.S. Luhman, M. Strasik, and E.W. Collings "Lower Critical Field Studies of Melt-Textured and Melt-Grown YBa2Cu3O7-X." in Advances in Superconductivity VI. (1 1994).
  • M.D. Sumption, Y. Higashida, K. Michisihita, N. Koshizuka, G. Genda, and E.W. Collings "Static and Dynamic Magnetizations of 3-D Textured and Monocrystalline Bi:2212." in Advances In Superconductivity VI. (1 1994).

1993

  • E. W. Collings, M. D. Sumption, Y. Higashida, and K. Michishita "Magnetic and Pinning Force Studies of Three-Dimensionally Textured Float-Zone-Processed Bi-Sr-Ca-Cu-O (2212/Ag)." in Advances in Superconductivity V. (1 1993).
  • D.S. Pyun, M.D. Sumption, E.W. Collings, Y. Higashida, and K. Michishita "Lower Critical Field Determination for a Rod of Float-Zone Processed BiSrCaCuO: 2212/Ag Composite." in Advances in Superconductivity V. (1 1993).
  • S.X. Dou, H.K. Liu, Y.C. Guo, D.L. Shi, M.D. Sumption, and E.W. Collings "Magnetic Properties and Irreversibility Behavior in Ag-Sheathed Bi-Based Superconducting Wires Fabricated Using a Controlled Melt Procedure." in Advances in Superconductivity V. (1 1993).
  • M.D. Sumption, T.S. Luhman, M. Strasik, and E.W. Collings "Magnetic and Microstructural Properties of Melt Grown YBa2Cu3O7-X." in Proceeding of the Sixth US-Japan Workshop on Superconductivity. (12 1993).
  • Sumption, M.D.; Marken, K.R.; Collings, E.W. "ENHANCED STATIC MAGNETIZATION AND CREEP IN FINE-FILAMENTARY AND SSC-PROTOTYPE STRANDS via HELICAL CABLING GEOMETRY ENHANCED PROXIMITY EFFECTS." (3 1993).
  • SUMPTION, M.D.; MARKEN, K.R.; COLLINGS, E.W. "ENHANCED STATIC MAGNETIZATION AND CREEP IN FINE-FILAMENTARY AND SSC-PROTOTYPE STRANDS VIA HELICAL CABLING GEOMETRY ENHANCED PROXIMITY EFFECTS." (1 1993).
  • Sumption, M.D.; Marken, K.R.; Collings, E.W. "Enhanced Static Magnetization and Creep in Fine-Filamentary and Ssc-Prototype Strands Via Helical Cabling Geometry Enhanced Proximity Effectst." (1 1993).

1992

  • COLLINGS, E.W.; SUMPTION, M.D.; CARR, W.J. "HYSTERETIC METHOD OF LOWER CRITICAL-FIELD DETERMINATION IN HIGH-TC SUPERCONDUCTORS." in 6TH INTERNATIONAL WORKSHOP ON CRITICAL CURRENTS. (1 1992).
  • M.D. Sumption and E.W. Collings "Temperature and Field Dependence of Short Term Decay and Loss In Multifilamentary Superconductors." in Adv. Cryo. Eng.. (1 1992).
  • SUMPTION, M.D.; COLLINGS, E.W. "TEMPERATURE AND FIELD-DEPENDENCE OF SHORT-TERM DECAY AND LOSS IN MULTIFILAMENTARY SUPERCONDUCTORS - A PROXIMITY EFFECT INTERPRETATION." (1 1992).
  • E.W. Collings, M.D. Sumption, K.R. Marken, Jr., Zhou Lian, M.V. Parish, and W.J. Carr, Jr. "AC Hysteresis Loss, Lower Critical Field, and Critical Current Density at 77 K in Melt Processed YBa2Cu3O7- Wires and Rods." in Advances in Superconductivity IV. (1 1992).
  • SUMPTION, M.D.; COLLINGS, E.W. "TEMPERATURE AND FIELD-DEPENDENCE OF SHORT-TERM DECAY AND LOSS IN MULTIFILAMENTARY SUPERCONDUCTORS - A PROXIMITY EFFECT INTERPRETATION." in 9TH INTERNATIONAL CRYOGENIC MATERIALS CONF / CRYOGENIC ENGINEERING CONF. (1 1992).
  • COLLINGS, E.W.; SUMPTION, M.D.; CARR, W.J. "HYSTERETIC METHOD OF LOWER CRITICAL-FIELD DETERMINATION IN HIGH-TC SUPERCONDUCTORS." (1 1992).

1991

  • E.W. Collings, K.R. Marken, Jr., and M.D. Sumption "Magnetization Studies of Multifilamentary Strands for Superconducting Supercollider (SSC) Applications -- Methods of Controlling Proximity-Effect Coupling and Residual Magnetization." in Proceedings of the International Atomic Energy (IAEA) Symposium on Materials for Fusion and High Energy Physics 1989 -- IAEA-TECDOC-594. (1 1991).
  • M.A. Green, E.W. Collings, K.R. Marken, and M.D. Sumption "Ferromagnetic Material in the Superconductor and its Effect on the Magnetization Sextupole and Decapole in the SSC Dipoles at Injection." in Supercollider 3. (1 1991).

1990

  • E.W. Collings, K.R. Marken, Jr., and M.D. Sumption "Design of Multifilamentary Strands For SSC Dipole Magnets." in Supercollider 2. (1 1990).
  • COLLINGS, E.W.; MARKEN, K.R.; SUMPTION, M.D. "DESIGN OF MULTIFILAMENTARY STRAND FOR SUPERCONDUCTING SUPERCOLLIDER (SSC) APPLICATIONS - REDUCTION OF MAGNETIZATIONS DUE TO PROXIMITY EFFECT AND PERSISTENT CURRENT." (1 1990).
  • COLLINGS, E.W.; MARKEN, K.R.; SUMPTION, M.D. "DESIGN OF MULTIFILAMENTARY STRAND FOR SUPERCONDUCTING SUPERCOLLIDER (SSC) APPLICATIONS - REDUCTION OF MAGNETIZATIONS DUE TO PROXIMITY EFFECT AND PERSISTENT CURRENT." in 2ND INTERNATIONAL INDUSTRIALIZATION SYMP ON THE SUPERCOLLIDER ( IISSC-90 ). (1 1990).