Magnetic Quench Antenna for MQXF Quadrupoles

被引：10

作者：

Marchevsky, Maxim ^{[1
]}

Sabbi, GianLuca ^{[1
]}

Prestemon, Soren ^{[1
]}

Strauss, Thomas ^{[2
]}

Stoynev, Stoyan ^{[2
]}

Chlachidze, Guram ^{[2
]}

机构：

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

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

来源：

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

关键词：

Accelerator magnets; quench; magnetic analysis; magnetic sensors; CURRENT REDISTRIBUTION; LOCALIZATION; PROPAGATION;

D O I：

10.1109/TASC.2016.2642983

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：

High-field MQXF-series quadrupoles are presently under development by LARP and CERN for the upcoming LHC luminosity upgrade. Quench training and protection studies on MQXF prototypes require a capability to accurately localize quenches and measure their propagation velocity in the magnet coils. The voltage tap technique commonly used for such purposes is not a convenient option for the 4.2-m-long MQXF-A prototype, nor can it be implemented in the production model. We have developed and tested a modular inductive magnetic antenna for quench localization. The base element of our quench antenna is a round-shaped printed circuit board containing two orthogonal pairs of flat coils integrated with low-noise preamplifiers. The elements are aligned axially and spaced equidistantly in 8-element sections using a supporting rod structure. The sections are installed in the warm bore of the magnet, and can be stacked together to adapt for the magnet length. We discuss the design, operational characteristics and preliminary qualification of the antenna. Axial quench localization capability with an accuracy of better than 2 cm has been validated during training test campaign of the MQXF-S1 quadrupole.

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页数：5

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