| Title: |
Thermo-electromagnetic design, operation, and protection simulations of a 40 T HTS NI final cooling solenoid for a muon collider |
| Authors: |
Mulder, Tim; Vernassa, Gianluca; Teichröb, Leon; Bordini, Bernardo; de Sousa, Patricia Borges; Dudarev, Alexey; Wozniak, Mariusz; Verweij, Arjan; Bottura, Luca |
| Contributors: |
CERN Genève; École des Mines de Saint-Étienne (Mines Saint-Étienne MSE); Institut Mines-Télécom Paris (IMT); CERN (Meyrin, Suisse) |
| Source: |
ISSN: 1051-8223 ; IEEE Transactions on Applied Superconductivity ; https://hal-emse.ccsd.cnrs.fr/emse-05109428 ; IEEE Transactions on Applied Superconductivity, 2025, 35 (5), pp.1-5 / 4602805. ⟨10.1109/TASC.2025.3530379⟩ ; https://ieeexplore.ieee.org/abstract/document/10845151. |
| Publisher Information: |
CCSD; Institute of Electrical and Electronics Engineers |
| Publication Year: |
2025 |
| Collection: |
Mines de Saint-Etienne: Archives Ouvertes / Open Archive (HAL) |
| Subject Terms: |
final cooling solenoid; muon collider; quench protection; HTS; NI coils; conductors; voltage; windings; magnetomechanical effects; high-temperature superconductors; protection; cooling; solenoids; superconducting magnets; coils; [SPI.MAT]Engineering Sciences [physics]/Materials |
| Description: |
International audience ; 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-acceleration and subsequent injection of the beam into the collider ring. In the muon collider design, about 12 to 14 final cooling solenoids of different lengths are foreseen. The conceptual design of the final cooling solenoid that is currently pursued has a homogeneous (∼1%) magnetic field of >40 T over a length of approximately 0.5 m and features a stack of 52 No-Insulation (NI) High-Temperature Superconductor (HTS) pancake coils. Its ramp scheme has been investigated and a ramp profile has been derived for a constant dissipation of 200 W during the majority of the ramp, while keeping the overall magnet characteristic time at 2700 s. Protection calculations have been performed and show that these solenoids require active quench protection at nominal field to limit the Lorentz forces and thus tape tensile and magnet radial stress during a quench. This contribution provides an overview of the current state of the thermo-electromagnetic design, operational aspects, and several simulated quench and protection scenarios for our design of a final cooling solenoid for a muon collider. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| DOI: |
10.1109/TASC.2025.3530379 |
| Availability: |
https://hal-emse.ccsd.cnrs.fr/emse-05109428; https://hal-emse.ccsd.cnrs.fr/emse-05109428v1/document; https://hal-emse.ccsd.cnrs.fr/emse-05109428v1/file/TM_GV_IEEE_Transa_Applied_Superconduc_2025.pdf; https://doi.org/10.1109/TASC.2025.3530379 |
| Rights: |
http://creativecommons.org/licenses/by/ ; info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.66C44DD2 |
| Database: |
BASE |