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Herman ten kate27/10/2026, 09:05
For over four decades, we have specialised in high-temperature superconductor (HTS) technology. The current-carrying capacity, manufacturability and practical performance of the conductors has increased significantly.
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A variety of materials were considered for use as practical conductors. However, the current focus of R&D and industrial efforts is primarily, although not exclusively, on ReBCO... -
Lutz Decker (Linde Kryotechnik AG)27/10/2026, 09:45Cryogenics for large scale applications
The discovery of high-temperature superconductors in 1986 seemed to herald the end of the era of large cryogenic systems. Phase transition temperatures of up to 138 K were achieved in ceramic materials within a short period of time. Superconductivity at room temperature seemed within reach. However, further success proved much more difficult than expected. The material class of hydrides, for...
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Yuhu Zhai (Princeton Plasma Physics Laboratory)27/10/2026, 10:05
Princeton Plasma Physics Laboratory (PPPL) is a DOE national laboratory focused on plasma physics and nuclear fusion science. Our primary mission is research into and development of fusion as an energy source. PPPL recently developed a REBCO coated conductor continuous in-field characterization system and tested a large warm bore conduction cooled Nb3Sn model coil capable of generating 6 T in...
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Vicente Climente-Alarcon (United Kingdom Atomic Energy Authority - UKAEA)27/10/2026, 10:20Cryogenics for large scale applicationsOral or Poster
Tokamaks rely upon a centre solenoid to initiate and warm up the plasma at the beginning of each pulse [1]. A conventional centre solenoid consisting of hollow copper conductors and insulated with epoxy resin-impregnated glass and kapton tape was used in JET [2]. In the larger ITER, however, it was decided that only a superconducting coil could fulfil the flux requirements. NbTi cooled down to...
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Markus Mueller (The University of Edinburgh)27/10/2026, 11:10
Electrification of energy, aviation and shipping requires lightweight, highly efficient electrical machines. Conventional permanent-magnet machines are difficult to scale to multi-megawatt wind systems while maintaining low mass, or to the power densities required for transport. The SuperMachine concept aligns the machine structure with the benefits of HTS materials and provides a highly...
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Mr Yuan Cheng (Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences), Mr Zhanguo Zong (Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences)27/10/2026, 11:50
REBCO coated conductors are regarded as an enabling material for next-generation high-field magnets due to their high current-carrying capacity at elevated fields and temperatures. The development of compact high-field HTS magnets has become increasingly important across a variety of scientific and technological applications. Among different coil configurations, the racetrack geometry is...
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Aya SBAI (Université de Lorraine, GREEN)27/10/2026, 12:05
High-temperature superconducting (HTS) cables are promising candidates for compact and efficient high-power electrical transmission, owing to their high current-carrying capability and negligible ohmic losses under superconducting operating conditions. However, in applications involving relatively short cable lengths, such as urban power links, railway infrastructures, or embedded electrical...
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Prof. Tabea Arndt (KIT)27/10/2026, 13:45
Historically and even today for selected applications, superconducting coils have been cooled by liquid helium pool cooling. The technical viability and business case in magnets and power applications has been widely influenced by the operating conditions and the available cooling devices. HTS have simplified cryogenic measures and considerably extended the devices’ suitable power range. For...
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Sastry Pamidi (FAMU-FSU College of Engineering & The Center for Advanced Power Systems)27/10/2026, 14:25
Interest in high-temperature superconducting (HTS) technologies is surging across fusion energy, large electric transport, data centers, and electric utilities due to their unmatched power density. Notably, liquid hydrogen (LH2) platforms simplify HTS integration by utilizing LH2 at 20 K as an effective cryogenic heat sink. However, the advancement of these technologies is heavily constrained...
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Prof. Cheng Shao27/10/2026, 14:45
A high-capacity closed-cycle 1 K cryostat based on a capillary Joule–Thomson (J–T) expansion stage is developed and experimentally characterized for low-temperature physical property measurements of superconducting detectors. The cryostat achieves a base temperature of 1.37 K and provides a cooling power of approximately 30 mW at 1.54 K. By employing a lower-impedance capillary, the cooling...
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Dr Vicente Climente-Alarcon (United Kingdom Atomic Energy Authority - UKAEA)27/10/2026, 15:00
Viable nuclear fusion reactors will need to gather in a constrained space a wide variety of elements related to the fuel cycle, and plasma initiation, shaping, and positioning, amongst others. Tokamaks rely upon several sets of coils for plasma control [1]. The large currents circulating through those magnets make the use of superconductors advantageous. For practical purposes, superconductors...
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Patrik Fröhlich27/10/2026, 15:15
Turbomachinery based cooling systems have advantages compared to other cooling systems in terms of low maintenance due to the oil-free gas bearing, low micro-vibration emission as they are continuous flow machines with well-balanced rotor, and the low specific energy consumption (W per W of cooling) due to their high efficiency. In a first concept, they are applied as turbo compressor and...
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Shrikant Pattalwar (UKRI- STFC Daresbury Laboratory)27/10/2026, 16:00
Superconductivity plays a significant role in modern high-energy accelerators as it enables:
- High field magnets for bending, focusing, and wiggling charged particle beams
- High field magnets in large detectors for particle identification from colliders
- Superconducting RF cavities for charged particle beam acceleration
In this talk I will give a briefely describe the role of...
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Haruumi Yamamoto (National Institute for Materials Science)27/10/2026, 16:20
Magnetic refrigeration and hydrogen liquefaction based on the active magnetic regenerator cycle require the applied field to be ramped up and down repeatedly. In a superconducting drive coil the resulting AC loss is dissipated directly into the cryogenic environment, so it competes with the useful cooling power of the device and sets a practical ceiling on the achievable cycle rate. Reducing...
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Shinnosuke Matsunaga (National Institute of Technology, Gifu College)27/10/2026, 16:35
Below the 77 K of liquid nitrogen, the practical liquid-cryogen candidates are essentially three, namely helium, hydrogen, and neon. Among them neon is distinctive. It liquefies near 27 K, possesses an exceptionally high volumetric latent heat, about forty times that of helium and three times that of hydrogen, and, as an inert noble gas, is non-flammable and does not embrittle materials. It...
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Mr Tsuyoshi Shirai (National Institute for Materials Science)27/10/2026, 16:50
Tandem active magnetic regenerator (AMR) configurations, in which two AMR beds are magnetized and demagnetized in antiphase, are attractive because the magnetic forces acting on the beds largely cancel each other and the mechanical work required to drive the beds is reduced. In our previous force-based evaluation, however, the achieved reduction of the magnetic work was smaller than that...
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Taketsune Nakamura28/10/2026, 08:55
Liquid hydrogen serves as an excellent medium for transporting hydrogen, a clean energy source for the next generation. Also, its atmospheric boiling point (20 K) is well-suited to the operating environment of high-temperature superconducting equipment; thus, a synergistic effect between the liquid hydrogen—acting as both an energy source and a coolant—and the superconducting equipment enables...
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Jaap Kosse (PSI)28/10/2026, 09:35
The HTS4 project, part of the CHART framework and the FCC Feasibility Study, investigates energy-efficient nested high-temperature superconducting (HTS) magnet systems for the FCC-ee short straight sections (SSS). Replacing selected normal-conducting magnets with nested ReBCO-based variants can reduce electricity consumption through two mechanisms: elimination of ohmic magnet losses and an...
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Dr Jeroen van Nugteren (Little Beast B.V.)28/10/2026, 09:55
One of the great advantages of High Temperature Superconductor (HTS) magnets is their high thermal stability. Yet many protection concepts envisioned for large magnets deliberately work against this property by improving normal-zone propagation through partial insulation, heaters, or other means. Better propagation may help distribute energy, but it also makes the coil itself less...
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Gerard Willering (CERN)28/10/2026, 10:15
The SM18 superconducting magnet test facility has a long-standing history and large capacity for testing superconducting magnets for accelerators. Existing cooling capacity includes 1.9 K or 4.5 K helium bath cooling, as used in LHC and HL-LHC magnets, and helium gas cooling from 5 to 80 K, used for HTS magnet tests, mostly within the HFM program. For 2027, a new cryostat insert is in...
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Dr Mariusz Wozniak (CERN)28/10/2026, 11:05
High-temperature superconducting (HTS) coated conductor (CC) magnets have the potential to reach high fields for accelerators, fusion devices, and user magnets, but protecting them against quench-induced damage remains a central obstacle to their deployment. Compared with low-temperature superconductors (LTS), HTS combine slow normal-zone propagation and high minimum quench energy. Passive and...
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Adithya Harithas Venkatesh (Helmut-Schmidt Universität, Universität der Bundeswehr, Hamburg)28/10/2026, 11:45Novel Cryogenic and HTS TechnologiesOral
The increasing demand for renewable electricity is driving the deployment of larger and more powerful offshore wind turbines. Electrical machines employing second generation high temperature superconducting (2G HTS) field windings offer the potential for high magnetic loading, increased torque density and reduced active mass. However, conventional conductive energization of these 2G HTS...
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Shuangrong You (The University of Edinburgh)28/10/2026, 12:00
AC loss in high-temperature superconducting (HTS) stator windings is a key constraint in fully HTS rotating electrical machines, as it directly determines the cryogenic cooling load and thermal management requirements. In practical operation, HTS stator windings are exposed simultaneously to rotating magnetic fields and AC transport currents. The resulting AC loss is therefore not simply the...
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Mathijs van Gorcum (VDL ETG Technology & Development)28/10/2026, 12:15Novel Cryogenic and HTS TechnologiesOral
Superconductivity has the potential to be an enabling technology for future high-tech systems. Coils wound from commercially available superconducting (REBCO) tape are uniquely suited to produce high magnetic fields at high current densities. This has applications in varying fields from motors and actuators to plasma containment in fusion, from MRI and NMR to high-voltage power transport.
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In... -
Margreet ter Schure (University of Twente)28/10/2026, 13:45
We present the design, assembly and commissioning of a modular test bench to investigate the electrical and thermal performance of aviation-relevant power cables and terminations under a wide range of steady-state or dynamic loading conditions.
Particular focus is placed on demountable custom cryogenic flanges and high current feedthroughs, providing a high degree of flexibility for the...
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Xiaotao Wang (Technical Institute of Physics and Chemistry of the Chinese Academy of Sciences (TIPC-CAS)), Mr Haibing Li (Lihan Cryogenics)28/10/2026, 13:45
High-temperature superconducting (HTS) power cables are moving toward large-scale and long-distance applications, placing increasing demands on the efficiency, reliability, and maintainability of cryogenic systems. Conventional cooling architectures generally rely on centralized cryogenic stations and long-distance circulation of subcooled liquid nitrogen. As cable length increases, this...
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Rise Takagi (National Institute of Technology, Gifu College)28/10/2026, 13:45
To expand the application range of high-temperature superconducting (HTS) conductors, the transport characteristics of REBCO coated conductors were evaluated under liquid hydrogen and liquid neon cooling conditions. Although REBCO conductors maintain their superconducting state at the liquid nitrogen temperature of 77 K, their intrinsic performance cannot always be fully exploited in...
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Dr Yingzhe Wu (Shanghai HyMaster Technology, Co., Ltd.)28/10/2026, 13:45
HTS applications demand Gifford-McMahon (GM) cryocoolers with higher cooling capacity and efficiency at relatively higher temperatures. HyMaster has developed a high-efficiency single-stage GM cryocooler (HMR1020) achieving 104.4 W at 20 K, corresponding to a relative Carnot efficiency (rCOP) of 11.5%. Reliability testing is performing currently being performed to ensure long-term product...
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Jacob Cornelis Maris (VDL ETG Technology & Development B.V.)28/10/2026, 13:45
Cryocoolers are increasingly favored over bath or forced-flow cooling systems for providing heat removal and thermal stability in High Temperature Superconducting (HTS) magnets. Efficient heat transfer between coil and cryocooler is crucial to the operation of such a system. Compared to conventional thermal buses, which are typically made of solid materials such as high-purity copper braids,...
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Dr Yunhao Cui (Technical Institute of Physics and Chemistry of the Chinese Academy of Sciences (TIPC-CAS))28/10/2026, 13:45
The Joule-Thomson (JT) cryocooler precooled by Gifford-Mcmahon (GM) cryocooler features high cooling efficiency and large cooling capacity, with a compact configuration, no moving parts at the cold end, and the capability for long-distance cooling power transport, making it suitable for applications such as superconducting electric levitation, gas liquefaction, and pre-cooling of...
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Jurrie Bruggeman (University of Twente)28/10/2026, 13:45
For models of HTS cables for large-current transfer applications, an accurate prediction of current distribution over the strands is important, as this forms the basis for many AC loss- and stability simulations. Especially in non-fully transposed multiple-strand cables, such as those of the CORC geometry, carrying a non-DC transport current, strand current distributions may be highly...
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Prof. Wei Wang (Sichuan university)28/10/2026, 13:45
Future electric aircraft require lightweight and high-power-density electrical transmission systems. High-temperature superconducting (HTS) cables are therefore promising for cryogenic electric propulsion, but their practical application requires coordinated evaluation of the cable, terminations, electromagnetic behaviour, and insulation. This work develops a modular single-cable cryogenic...
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Charles Janeke (ASME)28/10/2026, 13:45
Because state of the art cryocoolers suffer from (CARNOT) inversion syndrome because of the 2nd law of thermodynamics wherein (heat/energy/charges) can only flow from higher to lower/charge levels, the HSS (hypersonic stochastic switch) an eigenvalue (condition of optimality in nature underscoring the power of Boltzmann “distributions” (i.e. extreme ((quantum/relativistic)) stochastic...
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Mr Jakob Reichert (Karlsruhe Institute of Technology)28/10/2026, 13:45
Cryogenic mixed-refrigerant cycles (CMRC) are a promising technology for the efficient cooling of HTS applications including power cables and current leads. Their efficiencies and lowest achievable temperatures are largely determined by the mixture composition and the heat exchanger design, both of which can be optimized using evolutionary algorithms.
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Current modeling concepts involve first... -
SHURUI ZHANG (Tongji University; Cardiff University)28/10/2026, 13:45
Achieving hundred-watt-class cooling near 20 K is critical for the development of high-temperature superconducting (HTS) magnets, yet remains challenging for regenerative cryocoolers. This work presents recent advances at Tongji University in three pulse tube cryocooler (PTC) configurations designed to improve phase control, recover expansion power, and enhance cooling capacity.
The...
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Charles Janeke (ASME)28/10/2026, 13:45
ABSTRACT;
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Because state of the art cryocoolers suffer from (CARNOT) inversion syndrome because of the 2nd law of thermodynamics wherein (heat/energy/charges) can only flow from higher to lower/charge levels, the HSS (hypersonic stochastic switch) an eigenvalue (condition of optimality in nature underscoring the power of Boltzmann “distributions” (i.e. extreme ((quantum/relativistic))... -
Koji Kamiya (National Institute for Materials Science)28/10/2026, 15:00
At the National Institute for Materials Science (NIMS) in Japan, a project on high-efficiency hydrogen liquefaction by magnetic refrigeration is being carried out under the JST-Mirai Program. Liquid hydrogen is a key medium for storing and transporting hydrogen as an energy carrier, yet conventional gas-cycle liquefiers rely on compression work and reach only 20–30% of the Carnot limit....
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Jingxin Zheng (Hefei Institutes of Physical Science, Chinese Academy of Sciences)28/10/2026, 15:15
In order to improve the stability and comprehensiveness of the performance test of HTS conductor, a cryogenic system based on a 360 W@4.2 K helium refrigerator has been designed to provide 4.5 K-50 K test environment. This study conducts process simulation of the system, establishes the objective function for control parameters, and designs the optimal operation modes under different test...
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Ruben Keijzer (University of Twente)28/10/2026, 15:30
With ReBCO tape conductors increasingly being applied in electrical machines, understanding their rich behaviour in terms of current distribution and AC loss under applied currents and – magnetic fields in environments that include ferromagnetic materials is crucial. Such behaviour is often simulated with commercial Finite Element Method (FEM) software using, among many other techniques, the...
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Xiaotao Wang (Technical Institute of Physics and Chemistry of the Chinese Academy of Sciences (TIPC-CAS))28/10/2026, 15:45
This paper presents the development and experimental investigation of a compact two-stage free-piston Stirling cryocooler for superconducting applications. The cryocooler adopts a coaxial configuration, in which the compressor piston and two-stage displacer are arranged along a single axis, providing a compact structure suitable for integration with superconducting systems. The original design...
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Rick Spijkers28/10/2026, 16:00Technology Transfer for Novel Cryogenic ConceptsOral
Several software packages are currently available for simulating the operation of Stirling cryocoolers. However, fully three-dimensional CFD models are computationally expensive and time-consuming, making one-dimensional models the preferred approach for system-level simulations. These models typically rely on empirical correlations to describe component behavior, yet such correlations are...
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Wouter Verbruggen (University of Twente)28/10/2026, 16:15
The performance of a superconducting linear-actuator demonstrator is evaluated under dynamic excitation. The voice-coil type of device consists of a ReBCO layer-wound stator and a permanent magnet mover. Its design and its static performance were presented earlier, showing a 100 000–fold higher efficiency than copper-based actuators [1]. Under dynamic excitation however, as relevant to various...
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Prof. Hans van Oort (University of Twente)29/10/2026, 09:00
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Gerard Willering (CERN)29/10/2026, 09:10
Overview of R&D in Magnet Technology at CERN with a focus on the HFM Programme
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Mr Jan van Steenlandt (University of Twente)29/10/2026, 09:30
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Dr Matheus Wanior (Bruker)29/10/2026, 09:45
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Mr Giulio Anniballi (University of Twente)29/10/2026, 10:05
Eurofusion Collaboration with Twente (TBC)
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Gideon Koekoek (Maastricht University)29/10/2026, 13:30
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Michiel van Limbeek (University of Twente)29/10/2026, 13:50
Speaker TBC
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Romaine Kunst29/10/2026, 14:10
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Dr Martijn Cloos (Donders Institute RU)29/10/2026, 14:30Medical applications
14T UHF MRI developments at Donders
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Ms Noa Avital (OostNL)29/10/2026, 14:45
OostNL
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29/10/2026, 14:55
Breakout sessions:
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one moderator from the project team in each group
(Draft for team: Noa, Matthias, Judith, Albert) -
Mr Mike Pearson (Tesla Engineering Ltd)29/10/2026, 15:10
Tesla Talk
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Mr Andries den Ouden (HFML-FELIX)29/10/2026, 15:25
HFML-FELIX HTS programs (TBC)
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Jurrie Bruggeman (University of Twente)29/10/2026, 15:45Novel Cryogenic and HTS Technologies
Jurrie Placeholder
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Albert van Dorssen (LIOF)29/10/2026, 15:50
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Sahadasan Khute (University of Twente)
This paper presents the development and experimental characterisation of a piezoelectric cryogenic heat switch based on mechanical contact. The switch is designed for applications requiring dynamic thermal control in the temperature range of 60--180~K, where low parasitic heat loads, compactness, and long-term stability are essential. Unlike conventional mechanical or gas-gap heat switches...
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bohyun Jang (Changwon national university)
Cryogenic systems must be cooled rapidly from ambient to operating temperature and must also reject heat stably during operation. Polymer coatings are known to shorten cool-down by destabilizing the vapor film, but their behavior under operational heat load has rarely been examined. This study evaluates partial polyimide (PI) coatings in liquid nitrogen. Cylindrical specimens of SUS316L,...
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Joins with main session drinks in the foyer
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UT work for Iceflight programme
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Mr jihoon seok (changwon national university)
Liquid hydrogen (LH2) can serve simultaneously as a fuel and a low-temperature heat sink for high-temperature superconducting devices. However, repeated testing of an LH2-cooled system is difficult because of the safety and facility requirements associated with hydrogen. This study presents a thermal-hydraulic similarity procedure for designing a liquid-nitrogen-based surrogate experiment for...
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