Ferrites with a Minimized Secondary Electron Yield

Ferrites with a Minimized Secondary Electron Yield

Abstract Ferrites are an essential material in modern industry due to their exceptional magnetic properties and high resistivity. Many applications of ferrites necessitate exposure to high energy electrons, particularly space science and particle accelerators, where charging, multipacting, and elect...

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Bibliographic Details
Main Authors: Robin Uren, Manuel Hoffman, Amin Din, Stefan Wackerow, Holger Neupert, Stephan Pfeiffer, Alice Moros, Michael Barnes, Giorgia Favia, Marcel Himmerlich, Amin Abdolvand
Format: Article
Language:English
Published: Wiley 2025-03-01
Series:Advanced Science
Subjects:
ferrites
laser materials processing
secondary electron yield
Online Access:https://doi.org/10.1002/advs.202410083
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Summary:Abstract Ferrites are an essential material in modern industry due to their exceptional magnetic properties and high resistivity. Many applications of ferrites necessitate exposure to high energy electrons, particularly space science and particle accelerators, where charging, multipacting, and electron clouds (ECs) are major issues. ECs are of particular concern around the Ni/Zn soft ferrite kicker magnets as the large hadron collider (LHC) undergoes its high luminosity upgrade. Here, laser engineered surface structures (LESS) are used to reduce the secondary electron yield (SEY) of Ni/Zn ferrites from 2.1 to its experimentally determined minimum of 0.81, eliminating the ferrites ability to contribute to the formation of ECs. This demonstrates the applicability of LESS outside of metals and its broader applicability to reducing the SEY of technical materials.
ISSN:2198-3844

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