Ferrites with a Minimized Secondary Electron Yield.

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Tác giả: Amin Abdolvand, Michael Barnes, Amin Din, Giorgia Favia, Marcel Himmerlich, Manuel Hoffman, Alice Moros, Holger Neupert, Stephan Pfeiffer, Robin Uren, Stefan Wackerow

Ngôn ngữ: eng

Ký hiệu phân loại: 331.21647 Conditions of employment

Thông tin xuất bản: Germany : Advanced science (Weinheim, Baden-Wurttemberg, Germany) , 2025

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 701154

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.
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