5th IWC-HTS International Workshop on Cooling Systems for HTS Applications

Session

Oral Session - Novel Cryogenic and HTS Technologies III

28 Oct 2026, 15:00

Waaier (University of Twente)

Conveners

Oral Session - Novel Cryogenic and HTS Technologies III

• Adil Shah (The University of Edinburgh)

Description

Session chair: TBD

111. High-efficiency hydrogen liquefaction by active magnetic refrigeration

Koji Kamiya (National Institute for Materials Science)

28/10/2026, 15:00

Novel Cryogenic and HTS Technologies

Oral

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....

115. Numerical Analysis and Experimental Research of Cryogenic System for the High-Magnetic Field HTS Test Platform

Jingxin Zheng (Hefei Institutes of Physical Science, Chinese Academy of Sciences)

28/10/2026, 15:15

Novel Cryogenic and HTS Technologies

Oral

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...

116. Integral Formulation for Simulating Current Distribution and AC loss in ReBCO Tape Conductors in a Ferromagnetic Environment

Ruben Keijzer (University of Twente)

28/10/2026, 15:30

HTS cable development

Oral

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...

113. Development of a Compact Two-Stage Stirling Cryocooler for Superconducting Applications

Xiaotao Wang (Technical Institute of Physics and Chemistry of the Chinese Academy of Sciences (TIPC-CAS))

28/10/2026, 15:45

Novel Cryogenic and HTS Technologies

Oral

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...

109. Multiscale Simulation Framework for Stirling Cryocoolers

Rick Spijkers

28/10/2026, 16:00

Technology Transfer for Novel Cryogenic Concepts

Oral

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...

118. Performance of a ReBCO linear-actuator under dynamic operation

Wouter Verbruggen (University of Twente)

28/10/2026, 16:15

Superconducting motors

Oral

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...