Tim Mulder
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View article: Influence of Critical Current Defect on Operation, Quench Detection and Protection of a Conduction-Cooled Pancake REBCO Coil
Influence of Critical Current Defect on Operation, Quench Detection and Protection of a Conduction-Cooled Pancake REBCO Coil Open
High-temperature superconductor (HTS) coated conductors (CC) are often wound into pancake coils with electrical insulation in-between the turns. The copper terminals are used for current injection and conduction cooling. An inherent variat…
Thermo-Electromagnetic Design, Operation, and Protection Simulations of a 40 T HTS NI Final Cooling Solenoid for a Muon Collider Open
The final stage of the cooling channel of a muon collider contains several cooling cells, each requiring a very high-field solenoid. Such a so-called ‘final cooling’ solenoid is key in strongly reducing the emittance of the beam during pre…
View article: Mechanical Design of a ReBCO Non/Metal-Insulated 40 T Solenoid for the Muon Collider
Mechanical Design of a ReBCO Non/Metal-Insulated 40 T Solenoid for the Muon Collider Open
In the framework of the design studies of a Muon Collider (MuC), the design of Ultra-High-Field (UHF) magnets is a crucial part, particularly for the MuC's final cooling stage. To address this, CERN has recently introduced a conceptual des…
View article: Magnets for a Muon Collider—Needs and Plans
Magnets for a Muon Collider—Needs and Plans Open
We describe the magnet challenges for a Muon Collider, an exciting option considered for the future of particle physics at the energy frontier. Starting from the comprehensive work performed by the US Muon Accelerator Program, we have revi…
Optimizing Secondary CLIQ for Protecting High-Field Accelerator Magnets Open
Future circular particle accelerators with collision energies significantly beyond the LHC will require magnets with higher magnetic field. Quench protection of such magnets is challenging for two main reasons. First, the high energy densi…
An Open-Source Finite Element Quench Simulation Tool for Superconducting Magnets Open
An open-source Finite Element Quench Simulator (FiQuS) is being developed as part of the STEAM framework following CERN's open science policy (CERN, 2022). The tool is based solely on open-source software and uses Python to generate geomet…
External Coil Coupled Loss Induced Quench (E-CLIQ) System for the Protection of LTS Magnets Open
The next generation of Nb$_{3}$Sn accelerator magnets are pushed to higher magnetic fields, higher stored energy and higher energy density. This brings additional challenges when it comes to quench protection. At CERN, a fast quench protec…
Advancing ReBCO-CORC wire and cable-in-conduit conductor technology for superconducting magnets Open
ReBCO Coated Conductors are ceramic flat tape High Temperature Superconductors (HTS) capable of carrying large currents in a broad temperature and magnetic field range. ReBCO tapes significantly exceed the performance reach of NbTi and Nb3Sn …
A 2.5-T, 1.25-m Free Bore Superconducting Magnet for the Magnum-PSI Linear Plasma Generator Open
DIFFER's main experiment Magnum-PSI is the only laboratory setup in the world capable of exposing materials to plasma conditions similar to those of future fusion reactors. The success of the Magnum-PSI experiment depends on the generation…
Design and Preparation of Two ReBCO-CORC<sup>®</sup>Cable-In-Conduit Conductors for Fusion and Detector Magnets Open
Two new ReBCO-CORC® based cable-in-conduit conductors (CICC) are developed by CERN in collaboration with ACT-Boulder. Both conductors feature a critical current of about 80 kA at 4.5 K and 12 T. One conductor is designed for operation in l…
Development of ReBCO-CORC Wires With Current Densities of 400–600 A/mm $^2$ at 10 T and 4.2 K Open
Thin ReBCO tapes of 2 mm in width and only 30-μ m substrate thickness allow production of thin CORC wires of 3–4 mm in diameter. These CORC wires feature high bending flexibility and high current densities as required for high field magnet…
Introduction of CORC<sup>®</sup>wires: highly flexible, round high-temperature superconducting wires for magnet and power transmission applications Open
Conductor on Round Core (CORC®) technology has achieved a long sought-after benchmark by enabling the production of round, multifilament, (RE)Ba2Ca3O7-x coated conductors with practical current densities for use in magnets and power applic…
Design and Manufacturing of a 45 kA at 10 T REBCO-CORC Cable-in-Conduit Conductor for Large-Scale Magnets Open
The European Organization for Nuclear Research (CERN) is developing high-current ReBCO-CORC strand-based cables for use in future large-scale detector magnets. A six-around-one, forced flow gas-cooled ReBCO-CORC cable-in-conduit conductor …
Development of Joint Terminals for a New Six-Around-One ReBCO-CORC Cable-in-Conduit Conductor Rated 45 kA at 10T/4K Open
The European Organization for Nuclear Research (CERN) is developing a six-around-one conductor on round core (CORC)-strand-based cable-in-conduit conductor (CICC) for use in detector and other large magnet systems. The CICC comprises six R…