Magnetic and Mechanical Design of the Large Aperture HTS Superconducting Dipoles for the Accelerator Ring of the Muon Collider

To further explore the physics beyond the capabilities of the LHC and its High-Luminosity Upgrade (HL-LHC), particle physicists are studying advanced accelerators in order to perform finer measurements and/or reach higher energies. Upon the recommendation of the Updated European Strategy for Particle Physics (ESPP), an International Muon Collider Collaboration has been established to investigate the feasibility of a muon collider facility with a center-of-mass energy of 10 TeV. This endeavor is confronted with several technical challenges, primarily arising from the brief muon lifetime at rest, which is only 2.2

{\mu }

s. Addressing this stringent constraint necessitates the deployment of innovative technologies, including challengingmagnets, RF systems, targets, shielding, and cooling methodologies. This paper focuses on optimizing the electromagnetic and mechanical aspects of high-temperature superconducting (HTS) dipoles with large rectangular aperture for the accelerator ring, with a bore field up to 10 T, using finite element techniques. The objectives include ensuring a precise control over magnetic field uniformity and a preliminary evaluation of the mechanical behaviour of the HTS coils. The study is aligned with the priority set by ESPP on technological advancements, notably in high-field superconducting magnets, crucial components for any forthcoming circular collider.

Superconducting magnets
High-temperature superconductors
Mesons
Conductors
Harmonic analysis
Thermal stability
Muon colliders
Magnetomechanical effects
Electromagnetics
Computational modeling

References(20)

Figures(0)

[1]

Towards a muon collider

Carlotta Accettura
(
- CERN
)
,
Dean Adams
(
- Rutherford
)
,
Rohit Agarwal
(
- UC, Berkeley (main)
)
,
Claudia Ahdida
(
- CERN
)
,
Chiara Aimè
(
- Pavia U. and
- INFN, Pavia
)

et al.

- Eur.Phys.J.C 83 (2023) 9, 864,
- Eur.Phys.J.C 84 (2024) 1, 36 (erratum)
•
e-Print:
- 2303.08533
•
DOI:
- 10.1140/epjc/s10052-023-11889-x

[2]

Modern and Future Colliders

Vladimir Shiltsev
(
- Fermilab
)
,
Frank Zimmermann
(
- CERN
)

- Rev.Mod.Phys. 93 (2021) 015006
•
e-Print:
- 2003.09084
•
DOI:
- 10.1103/RevModPhys.93.015006

[3]

On the feasibility of future colliders: report of the Snowmass'21 Implementation Task Force

et al.

- JINST 18 (2023) 05, P05018
•
e-Print:
- 2208.06030
•
DOI:
- 10.1088/1748-0221/18/05/P05018

[4]

European strategy for particle physics—accelerator R&D roadmap

C. Adolphsen

- CERN Yellow Rep.Monogr. 1 (2022) 1-270

[5]

The muon collider

[6]

Magnets for a muon collider—needs and plans

L. Bottura

[7]

Comparative analysis of resistive dipole accelerator magnets for a muon collider

M. Breschi

8., [online] Available:

[9]

An update on IRIS demonstrators

L. Rossi

[10]

Design and plan of a 10 T HTS energy saving dipole magnet for the italian facility IRIS

S. Maffezzoli Felis

[11]

Estimation of quench protection limits in REBCO dipoles and quadrupoles

T. Salmi

[12]

Magnetic field lorentz forces and stored energy of multipole cos( \$ntheta\$ ) and sector magnets with and without iron yoke

S. Farinon
,
D. Novelli

[13]

Analytical evaluation of dipole performance limits for a muon collider

D. Novelli

[14]

A new approach to analytical and numerical analysis of dipole and quadrupole performance limits for a muon collider

D. Novelli

[15]

Preliminary design of a block-coil magnet for the muon collider ring

L. Alfonso

[16]

ROXIE-A computer code for the integrated design of accelerator magnets

S. Russenschuck

17., [online] Available:

[18]

Metal-as-insulation HTS coils

T. Lécrevisse

•
DOI:
- 10.1088/1361-6668/ac49a5

19., [online] Available:

•
- https://www.ansys.com/

[20]

Electro-mechanical properties of REBCO coated conductors from various industrial manufacturers at 77 K. self-field and 4.2 K. 19 T

C. Barth

•
DOI:
- 10.1088/0953-2048/28/4/045011