Magnetic Analysis of the Nb3Sn Low-Beta Quadrupole for the High-Luminosity LHC

被引：3

作者：

Bermudez, Susana Izquierdo ^{[1
]}

Ambrosio, Giorgio ^{[2
]}

Chlachidze, Guram ^{[2
]}

Ferracin, Paolo ^{[1
]}

Holik, E. ^{[2
]}

DiMarco, Joseph ^{[2
]}

Todesco, Ezio ^{[1
]}

Sabbi, GianLuca ^{[3
]}

Vallone, Giorgio ^{[1
]}

Wang, Xiaorong ^{[3
]}

机构：

[1] CERN, CH-1211 Geneva, Switzerland

[2] Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA

[3] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2017年 / 27卷 / 04期

关键词：

High luminosity LHC; field quality; magnetic measurements; high field Nb3Sn magnet;

D O I：

10.1109/TASC.2017.2651358

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

As part of the Large Hadron Collider Luminosity upgrade (HiLumi-LHC) program, the US LARP collaboration and CERN are working together to design and build 150-mm aperture Nb3Sn quadrupoles for the LHC interaction regions. A first series of 1.5-m-long coils were fabricated, assembled, and tested in the first short model. This paper presents the magnetic analysis, comparing magnetic field measurements with the expectations and the field quality requirements. The analysis is focused on the geometrical harmonics, iron saturation effect, and cold-warm correlation. Three-dimensional effects such as the variability of the field harmonics along the magnet axis and the contribution of the coil ends are also discussed. Moreover, we present the influence of the conductor magnetization and the dynamic effects.

引用

页数：5

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