Design and Analysis of a Self-Centered Cold Mass Support for the MICE Coupling Magnet

Wang, L; Wu, Hong; Li, S Y; Guo, Xiaofeng; Pan, Heng; Zheng, S X; Green, M A

doi:10.1109/tasc.2010.2101040

Cited by 5 publications

(2 citation statements)

References 6 publications

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“…The 8-rod architecture has been found in the quadrupole doublets of the FAIR (Facility for Antiproton and Ion Research) [26,27] and the coils of an MRI at NeuroSpin [48,49]. The 8-double-band suspension system has been found in the analytical paper from the CAS (Chinese Academy of Sciences) [32], the wiggler of TLS (Taiwan Light Source) [24], the wiggler of IHEP (Institute of High Energy Physics of CAS) [22], the coupling solenoid of the MICE [25], and the undulator of SSRF [2,3]. The reasons why, in some designs, the double-band geometry has been preferred over the rod one have not been explicitly reported in the articles found.…”

Section: The "8-support" Architecture and Geometrymentioning

confidence: 99%

Literature Review of Suspension Systems for Superconducting Elements

Piacentini,

Dassa,

Perini

et al. 2023

Machines

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When designing suspension systems for superconducting elements, the primary challenge is to strike a balance between limiting the heat load to the cold mass and ensuring the proper mechanical resistance and/or stiffness of the system. This trade-off often leads engineers to choose from a limited set of materials and supporting architectures. The aim of this study is to provide an overview of the different overall designs. Scientific articles were searched within the Google Scholar database using advanced search operators to combine a defined set of keywords. Among the architectures found, the “multi-post” solution and the “8-support” solution are the two most commonly chosen classes. Additionally, a recurrent pattern for the supporting system of superconducting cavities has been identified. The choice of architecture can be correlated with the characteristics of the superconducting element being supported, such as its mass, length, and stiffness. Furthermore, the review provides a conceptual analysis of the possibility of extending these designs to the unconventional environment of rotating machines.

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Section: The "8-support" Architecture and Geometrymentioning

confidence: 99%

Literature Review of Suspension Systems for Superconducting Elements

Piacentini,

Dassa,

Perini

et al. 2023

Machines

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“…The HTS leads are often supported off of the top plate of the cryostat turret. The cold mass is often separately supported so that the center position of the magnet is unchanged [16]. There is motion between the cold mass and the bottom of the HTS leads as the cold mass is cooled-down.…”

Section: A Prevention Of Lts Lead Failurementioning

confidence: 99%

Protecting the Leads of a Powered Magnet That is Protected With Diodes and Resistors

Green

Pan

Prestemon

et al. 2012

IEEE Trans. Appl. Supercond.

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MRI magnets and other magnets that have a low current and high self-inductance are passively quench-protected with a system that includes sub-divided coils with resistors and diodes that are in parallel with sections of the coils. The primary purpose of coil sub-division is to protect the coil from the high voltages that can occur during a quench. In the event of a lead failure (conventional or superconducting) between the coil and its power supply or its persistent switch, the total current in the coil flows through the diodes and resistors in parallel with the coil. When a lead fails, the current decay time constant for the coil current can be quite long. It is desirable that the coil quench in a time that is short compared to the coil current decay time constant. Experience shows that the heating from the resistors and diodes will eventually quench the magnet. This paper presents methods for shortening the time between a lead failure or a persistent switch failure and the eventual magnet quench.

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