Conceptual Design of a Large-Aperture Dipole Magnet for HL-LHC Upgrade

Author

Xu, Q. ; Nakamoto, Takamichi ; Ogitsu, T. ; Sasaki, Kazuhiko ; Terashima, A. ; Tsuchiya, K. ; Yamamoto, Akiyasu ; Todesco, E. ; Kikuchi, A. ; Takeuchi, T.

Author_Institution

High Energy Accel. Res. Organ. (KEK), Tsukuba, Japan

Volume

22

Issue

3

fYear

2012

fDate

6/1/2012 12:00:00 AM

Firstpage

4901404

Lastpage

4901404

Abstract

The development of a large-aperture (120-180 mm) dipole magnet is proposed in the framework of the CERN-KEK cooperation program. The application target is the D1 magnet (separation dipoles) replacement for the HL-LHC (High Luminosity-Large Hadron Collider) upgrade. The Cos-theta type coil cross section and the shell-based structure are adopted in the conceptual design of this magnet. The nominal field is estimated to be 6-10 T at 1.9 K with a 30-mm-width coil arranged in two layers. The candidates of superconductor are Nb₃Al, and Nb-Ti. We present the analytical estimation of the key parameters of this magnet and the simulation of the actual design which includes the field quality, the stray field, and the stress distribution in the coil.

Keywords

accelerator magnets; niobium alloys; superconducting magnets; CERN-KEK cooperation program; D1 magnet; HL-LHC upgrade; Nb₃Al; Nb₃Sn; NbTi; field quality; high luminosity-large hadron collider; large-aperture dipole magnet; separation dipoles; shell-based structure; size 120 mm to 180 mm; size 30 mm; stray field; stress distribution; superconductor; temperature 1.9 K; Apertures; Iron; Magnetomechanical effects; Stress; Superconducting coils; Superconducting magnets; Cos-theta type coil; large-aperture; shell-based structure; superconducting accelerator magnets;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2011.2180293

Filename

6107563