Special Sessions


1SPOr1A – Special Session: Screening Currents in HTS Magnets I
Monday, Sept. 5 10:00 a.m. – 12:00 p.m.
Thanks to the effort of many material scientists and conductor manufacturers, long coated conductors became available commercially in the first decade of the 21st century, and many coils were wound with them during the last decade. Most of their target applications are NMR, MRI, or particle accelerators, and magnets for such applications must generate very precise (spatially controlled and temporally stable / controlled) magnetic fields. In 2008, it was pointed out that the large magnetization caused by screening currents, also called as shielding currents or persistent currents, can seriously deteriorate the field qualities of magnets. Since then, this screening (shielding) – current – induced field (SCIF) is one of the hot topics in the R&D of the coils wound with coated conductors.

In this special session, at first, the invited speaker will review the extensive studies made by various groups in the last eight years. Then, the latest progress on the characterizations of SCIF and the countermeasures against it will be presented in the series of contributed talks.
This special session, “Screening Currents in HTS Magnets I”, is complemented with the other two poster sessions, 3LPo1K and 3LPo1L, “Screening Currents in HTS Magnets II, III”, on Wednesday morning. 2MOr3C, “Time Dependent Magnetization and Losses”, on Tuesday afternoon is on a related topic. The session organizer encourages the audience to visit these sessions as well in order to get the overall perspective.

Invited Speaker:
Amemiya_N Dr. Naoyuki Amemiya is a Professor in the Department of Electrical Engineering, Kyoto University. He received his Dr. Eng. Degree from the University of Tokyo in March, 1990. He joined Yokohama National University in April 1990 (Lecturer in April, 1992; Associate Professor in October, 1993; Professor in April, 2005) and transferred to Kyoto University in April, 2008. He stayed at the National High Magnetic Field Laboratory in 1996 as a Visiting Scientist and at University of Twente from 2000 to 2001 as an Exchange Scientist between JSPS and NWO. His research interests include electromagnetic phenomena of superconductors such as magnetizations, ac losses, stabilities etc. and magnet applications of HTS. He is currently leading a collaborating team for an R&D project of fundamental technologies of HTS accelerator magnets for carbon cancer therapy funded by the Japan Science and Technology Agency. He served for many ASCs and MTs as a program committee member. He is a Program Chair of ASC 2016 and a Board Member of ASC, Inc.
1SPOr2A – Special Session: What will Drive Market Maturity for HTS Applications in the Electric Power Sector?
Monday, Sept. 5 2:30 p.m. – 4:30 p.m.
Is cheaper and higher performance wire the key solution for energizing more HTS based electric power devices in the grid? Or is today’s wire price and performance sufficient? What are the challenges for HTS equipment to be a key solution for grid modernization efforts? These and other questions will be explored by expert panelists from around the globe in an interactive and dynamic session. Short presentations providing HTS project updates will be followed up by an expanded Q&A with the panelists. The audience will have the opportunity to ask questions and participate in real-time survey questions using a web-enabled software tool.

A 2015-2030 Roadmap document for HTS in the electric power sector was developed to outline the current state of the industry and what steps could be taken to reach market maturity. The roadmap will serve as the overview presentation for this session and set the stage for the discussion. At the end of the session, participants will have a better understanding of the challenges and needs for HTS applications in the electric power sector and how strong partnerships have developed successful projects.

Invited Speakers:
 Marchionini Brian Marchionini is a Program Director with Energetics Incorporated and provides analysis, strategic planning, facilitation, communications, and writing support to public and private sector customers. His work has focused on electricity delivery areas such as high temperature superconductivity, smart grid, energy storage, and power electronics. Mr. Marchionini has more than 15 years of experience leading the development and production of roadmaps, strategic plans, multi-year plans, and communications products to help with public private partnership development. He currently serves as an operating agent for the International Energy Agency’s Technology Collaboration Program on High Temperature Superconductivity. In this capacity he conducts technical, policy and market research and analysis and crafts communications and outreach materials for stakeholders worldwide. Mr. Marchionini has a Bachelor’s Degree in Environmental Engineering from the University of Maryland, College Park and a Master’s Degree in Engineering Management from the George Washington University.
Martini Luciano Martini works for RSE (Italy); he is the Director of the “Transmission and Distribution Technologies” Department whose activities include, among others, HV lab testing, power electronics, plug-in electric vehicles, applied superconductivity, and pilot applications of smart grids. Luciano Martini has 25 years’ experience on Research & Development activities dealing with innovative materials, renewable energies, superconductivity, and smart grids. He is the Chairman of the Executive Committee of the International Energy Agency (IEA) Implementing Agreement for a “Co-Operative Programme for Assessing the Impacts of High-Temperature Superconductivity on the Electric Power Sector”, and member of several CIGRE and IEC international working groups. Moreover, he is the Coordinator of the EERA Joint Programme on Smart Grids, which includes 41 research organizations representing 18 European countries. He is a member of the steering committee of the European Technology Platform SmartGrids, of the EEGI-Team, and the coordinator of ELECTRA the European Integrated Research Programme on smart grids. He has been repeatedly recruited by organizations as the European Commission and the US DOE as independent expert to review research proposals and publicly funded R&D projects.
2SPOr3A – Special Session: No-insulation HTS Coils – sponsored by NHMFL
Tuesday, Sept. 6 4:00 p.m. – 6:00 p.m.
Firstly introduced in 2010, notable progress has been made in the no-insulation (NI) high temperature superconductor (HTS) coil technology in expectation of building substantially more compact and reliable high-field HTS magnets than the conventional insulated counterparts. Yet, multiple engineering issues still need to be resolved for application of the NI technique to actual user magnets. This session intends to introduce the latest progress in the NI HTS coil R&Ds and provide in-depth discussion on potential opportunities and technical challenges.
Invited Speaker:
Hahn_S Dr. Seungyong Hahn is currently an Associate Professor in the Department of Mechanical Engineering, Florida State University (FSU) and the National High Magnetic Field Laboratory (NHMFL). He received his PhD in Electrical Engineering and Computer Science at the Seoul National University in Korea (2003). Before he joined the NHMFL-FSU in 2015, he had served the MIT Francis Bitter Magnet Laboratory during 2003 – 2015. His research is in the field of superconducting magnet technology for various applications including biomedical imaging (NMR/MRI), renewable energy (wind generator, high-current power cable), high energy physics (fusion, accelerator), and transportation (MagLev). He invented the no-insulation (NI) high temperature superconductor (HTS) winding technique in 2010 and has been pioneering its research. He also identified the detrimental impact of “screening current” on the spatial field homogeneity of high temperature superconductor NMR magnet for the first time in 2008.
3SPOr3A – Special Session: The Development of Applied Superconductivity over the Last 50 Years
Wednesday, Sept. 7 4:00 p.m. – 6:30 p.m.

This session discusses the development of applied large scale devices,  the development of applied superconducting electronic devices and the conductors that made these applications possible from the perspective of those who were involved with the developments in the field of applied superconductivity for the last fifty or so years.

Prominent scientists in Electronics, Large Scale and Materials will share how lessons from the past may help in future developments.
4SPOr2A – Special Session: HTS High Current Cables III and 4SPOr3A – Special Session: HTS High Current Cables IV
Thursday, Sept. 8 3:00 p.m. – 4:30 p.m. and 4:45 p.m. – 6:15 p.m.

The development of cables based on High Temperature Superconducting (HTS) materials has grown significantly in recent years. Many concepts and demonstrators have been proposed for different applications, where requirements are beyond Low Temperature Superconductors properties. The possibility to operate HTS at fields above 18 T or at high temperature is fundamental for a broad spectrum of applications, as for example in high field magnets or in power transmission cables. Different cable parameters need to be optimized for the specific application, as: engineering current density, current redistribution, AC losses, or mechanical resistance.

This special session will open with an overview given by Pierluigi Bruzzone of the different cable concepts being investigated, with their pros and cons. Within the session, cable concepts based on either REBCO or BSCCO materials will be discussed. Some of the talks will focus more on cable properties, some more on specific applications of those cables. New or improved concepts with respect to the most known ones (like CORC or Roebel cables, or those based on stacks of tapes) will be introduced.

We kindly invite all those interested in cable development or in applications based on HTS materials, as well as all potential users, to attend this highly interesting special session on HTS High Current Cables.

Invited Speaker:
P-Bruzzone Dr. Pierluigi Bruzzone was born in Genova, Italy. He graduated in Physics at the Un. of Genova in 1979. He was employed by the CNR (Italy) and SIN (Switzerland). He received the Ph.D. in Physics from the ETH Zurich in 1987 for a work on AC losses on high current superconducting cables. He moved to ABB, Oerlikon in the superconductivity department. In 1990 he joined the NET Team in Garching and later the ITER-project Central Team, Superconducting Coils and Structure Division (Naka, Ibaraki-ken, Japan). From 1997 he is at EPFL-Swiss Plasma Center (Villigen, Switzerland), where he leads the superconductivity section since 2001.
5SPOr1A – Special Session: Nano-scale Artificial Pinning for High Field Application/Low Temperature Applications
Friday, Sep. 9 8:00 a.m. – 10:00 a.m.
The study of pinning enhancements in superconductors has a long history. With the advent of well-connected coated conductors, much of the effort was on pinning in these complicated systems, typically at liquid nitrogen temperatures. Recently, however, interesting new work is focused at lower temperatures and higher fields. Here in this special session we focus on the nature of pinning for low temperatures and high fields, including efforts in a number of high-field relevant SC materials.
Invited Speakers:
Haugan Dr. Timothy J. Haugan is a Senior Physicist and Research Team Leader for the Power and Controls Division, Aerospace Systems Directorate, of the Air Force Research Laboratory. Author of over 125 scientific papers, 300 presentations, and 4 patents, his research includes superconductivity and cryogenic power, search for new superconductor materials, composite thin film deposition, and MW-class power components, with applications in hybrid-electric propulsion, MW-class electric power systems, and superconducting magnetic energy storage devices for aerospace.  Dr. Haugan earned his Ph.D. (1995, Electrical Engineering) at State University of New York at Buffalo, M.S. (1986, Physics) at Washington State University, Pullman, and B.S. (1983, Physics and Mathematics) at Whitworth University, Spokane.
V_Selvamanickam Venkat Selvamanickam is a M.D. Anderson Chair Professor of Mechanical Engineering at the University of Houston, the Director of the Texas Center for Superconductivity Applied Research Hub and the Founder of the industry-led consortium – Advanced Superconductor Manufacturing Institute. Previously, he was the Chief Technology Officer of SuperPower Inc. He led SuperPower to multiple world-records for the highest performance second-generation HTS wire over several length scales, the longest 2G HTS wire made and first to pilot manufacturing. At the University of Houston, he led the recently-completed, highly successful ARPA-E-funded program to achieve four-fold improvement in in-field performance of superconductor wires. Prof. Selvamanickam has published over 200 papers and holds 80 issued patents. He is the recipient of the Presidential Early Career Award for Scientists and Engineers (PECASE) from the White House, which is the highest award given to scientists and engineers beginning their independent careers. He has also received three R&D 100 awards, the Superconductor Industry Person of the Year award, Wire and Cable Technology International Award and the IEEE Dr. James Wong Award for Continuing and Significant Contributions to Applied Superconductivity Materials Technology. In 2014, Prof. Selvamanickam was elected to be inducted into the U.S. National Academy of Inventors.
TES Workshop
Transition-edge sensors, or TESs, are superconducting, thermal detectors. The energy of incoming photons or particles, or the energy of a nuclear reaction within an embedded material, is converted to heat in an absorber. A TES operates in the resistive transition between its superconducting and normal-metal states, where the electrical resistance is a strong function of temperature. Thus the heat of absorption raises the device temperature and resistance. A SQUID ammeter measures changes in the device current. TESs are increasingly used in many measurement fields, including cosmic-microwave-background cosmology, X-ray and gamma-ray spectroscopy, quantum information, dark-matter searches, and measurement of the neutrino mass.

The first TES Workshop was held in 2002, with the goal that TES researchers from across the globe could share, discuss, and understand confusing experimental results from their early TESs of different geometries and materials systems. The Workshop has been held every two years since, and has been joined to the Applied Superconductivity Conference since 2008.

TES devices provide interesting laboratories in which to study the nature of superconductivity itself; the Workshop has an oral and a poster session dedicated to device physics. Another pair of Workshop sessions (one oral, one poster) are about device readout: ever larger and more capable arrays of TES devices are being developed for various measurement applications, and new multiplexed readout schemes are required as an enabling technology. In a nod to the maturation of the TES field toward measurement instrumentation in an exploding number of fields, there are three oral sessions and one poster session about measurement applications. Fabrication of TES devices is covered in a Workshop poster session. Finally, an oral and a poster session are dedicated to other superconducting thermal detectors (such as magnetic calorimeters and hot-electron bolometers) that share some elements of design, physics, and readout with TESs, and are thus of interest to the TES community.

Special features of the TES Workshop (outside of standard ASC conference activities) are:

  • “Poster slide” presentations. At the end of session 1EOr3C (Monday), a block of time (6:00 – 6:30 p.m.) has been reserved. Each poster presenter in one of the TES Workshop sessions has the opportunity to present 1 slide (about 1 minute) to advertise the content of his/her poster.
  • Workshop dinner. To be held Monday evening at a restaurant near the Convention Center.

To be added to the email list for this and future TES Workshops, please contact Randy Doriese (NIST) at doriese@nist.gov. The TES-Workshop email list is separate from that of the wider ASC conference.

More information can be found at the following URL: https://sites.google.com/site/tesworkshop2016/.

Oral Sessions
Monday, Sept. 5 10:00 a.m. – 12:00 a.m. 1EOr1C – Physics of Transition-edge Sensors I
2:30 p.m. – 4:15 p.m. 1EOr2C – Readout of Transition-edge Sensors I
5:00 p.m. – 6:00 p.m. 1EOr3C – Application of Transition-edge Sensors I
Tuesday, Sept. 6 9:00 a.m. – 10:30 a.m. 2EOr1C – Applications of Transition-edge Sensors II
4:00 p.m. – 6:00 p.m. 2EOr3C – Applications of Transition-edge Sensors III
Wednesday, Sept. 7 9:00 p.m. – 10:30 p.m. 3EOr1C – Developments in Thermal Detectors
Poster Sessions
Tuesday, Sept. 6 2:00 p.m. – 4:00 p.m. 2EPo2A – Physics of Transition-edge Sensors II
2:00 p.m. – 4:00 p.m. 2EPo2B – Readout of Transition-edge Sensors II
Wednesday, Sept. 7 10:30 a.m. – 12:30 p.m. 3EPo1A – Device Development and Applications of Thermal Detectors
10:30 a.m. – 12:30 p.m. 3EPo1D – Fabrication of Transition-edge Sensors