scholarly journals Superconducting Magnets for Particle Accelerators

2013 ◽  
pp. 51-89 ◽  
Author(s):  
Lucio Rossi ◽  
Luca Bottura
Keyword(s):  
Superconducting Magnets ◽  
Particle Accelerators

scholarly journals Superconducting Magnets for Particle Accelerators

2012 ◽  
Vol 05 ◽  
pp. 51-89 ◽  
Author(s):  
Lucio Rossi ◽  
Luca Bottura
Keyword(s):  
Large Scale ◽  
Superconducting Magnets ◽  
Future Generation ◽  
High Energy ◽  
Particle Accelerators ◽  
Rf Cavities ◽  
Very High Energy ◽  
History Of ◽  
Superconducting Accelerator ◽  
Very High

Superconductivity has been the most influential technology in the field of accelerators in the last 30 years. Since the commissioning of the Tevatron, which demonstrated the use and operability of superconductivity on a large scale, superconducting magnets and rf cavities have been at the heart of all new large accelerators. Superconducting magnets have been the invariable choice for large colliders, as well as cyclotrons and large synchrotrons. In spite of the long history of success, superconductivity remains a difficult technology, requires adequate R&D and suitable preparation, and has a relatively high cost. Hence, it is not surprising that the development has also been marked by a few setbacks. This article is a review of the main superconducting accelerator magnet projects; it highlights the main characteristics and main achievements, and gives a perspective on the development of superconducting magnets for the future generation of very high energy colliders.

Microcrystallography and chemical microanalysis of polycrystalline Nb3Sn superconductors

1984 ◽  
Vol 42 ◽  
pp. 512-513
Author(s):  
J. Taftϕ ◽  
R. L. Sabatini ◽  
M. Suenaga
Keyword(s):  
Superconducting Magnets ◽  
High Energy ◽  
Alloying Elements ◽  
High Energy Particle ◽  
Particle Accelerators ◽  
X Rays ◽  
Crystal Unit Cell ◽  
Magnetically Confined ◽  
Analytical Electron ◽  
Spatial Composition

Polycrystalline Nb3Sn is a superconductor with a high superconducting temperature, 18 K. The material can withstand a high magnetic field which makes it especially useful in strong superconducting magnets for magnetically confined fusion reactors and high energy particle accelerators. Several metallurgical factors influence the superconducting properties of Nb3Sn, e.g. grain size, compositional inhomogenities and small amounts of alloying elements. We have used a 100 keV analytical electron microscope (AEM) to detect the characteristic x rays (EDS) in order to study spatial composition variations, and to locate alloying elements in the crystal unit cell using ALCHEMI (Atom Location by Channeling Enhanced Microanalysis).

Quench position reconstruction through harmonic field analysis in superconducting magnets

2021 ◽  
Author(s):  
Samuele Mariotto ◽  
Massimo Sorbi
Keyword(s):  
Superconducting Magnets ◽  
Magnetic Measurement ◽  
Measurement Techniques ◽  
Field Analysis ◽  
Particle Accelerators ◽  
Resistive State ◽  
Harmonic Field ◽  
Zero Current ◽  
Superconducting Coils ◽  
Field Quality

Abstract The performances of superconducting magnets for particle accelerators are limited by instabilities or disturbances which lead to the transition of the superconducting material to the normal resistive state and the activation of the quench protection system to prevent damage to the magnet. To locate the position of the state transition, voltage taps or quench antenna are the most commonly used technologies for their reliability and accuracy. However, during the production phase of a magnet, the number of voltage taps is commonly reduced to simplify the construction process, and quench antennae are generally used only for dipoles or quadrupoles to limit the antenna design complexity. To increase the accuracy in the reconstruction of the quench event position, a novel method, suitable for magnets with independent superconducting coils and quench protected without the use of quench heaters is proposed in this paper. This method, based on standard magnetic measurement techniques for field harmonic analysis, can locate the position of the superconductor transition inside the magnet after the quench event when the magnet has been discharged. Analyzing the not allowed harmonics produced in the field quality at zero current, the position of the quenched coils can be retrieved for any magnet orders without increasing the complexity of the dedicated measurement technique.

scholarly journals Superconducting Magnets for Particle Accelerators

2016 ◽  
Vol 63 (2) ◽  
pp. 751-776 ◽  
Author(s):  
Luca Bottura ◽  
Stephen A. Gourlay ◽  
Akira Yamamoto ◽  
Alexander V. Zlobin
Keyword(s):  
Superconducting Magnets ◽  
Particle Accelerators
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