DOE OSTI · 3097355
Improving Longitudinal Impedance of Inductive Inserts
Abstract
In this article, we discuss methods for improving the longitudinal impedance of inductive inserts used for space charge compensation in the proton storage ring (PSR) at Los Alamos Neutron Science Center (LANSCE) Facility. The PSR relies on inductive inserts to counteract the capacitive impedance produced by the space charge of the proton beam, which can otherwise lead to beam debunching. Existing inductive inserts, which utilize Toshiba M4C21A ferrite, have been effective but require heating to reduce resistive components that can cause instabilities at higher frequencies. This article explores the potential of alternative ferrite materials, specifically National Magnetics C2050, to enhance the performance of these inserts by reducing the need for heating and minimizing resistive impedance. Through both analytical modeling and CST Particle Studio simulations, it is demonstrated that optimized ferrite materials and geometries can significantly improve space charge compensation while mitigating instability risks, ultimately enhancing the performance of the PSR.
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Hall, Thomas Wesley [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000295172934), Henestroza, Enrique [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States). Los Alamos Neutron Science Center (LANSCE)], Huang, En-Chuan [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States). Los Alamos Neutron Science Center (LANSCE)] (ORCID:000000031857980X), Lewellen, John Wesley [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States). Los Alamos Neutron Science Center (LANSCE)] (ORCID:0000000166430845), Lyles, John T. Mccaw [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000309076178), Barrueta, Maria Sanchez [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000172807290), Guitron, Salvador Issac Sosa [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States). Los Alamos Neutron Science Center (LANSCE)] (ORCID:0000000279936121), Upadhyay, Janardan [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States). Los Alamos Neutron Science Center (LANSCE)] (ORCID:0000000313640579), Beidron, Sandra G. [Univ. of New Mexico, Albuquerque, NM (United States)], Taylor, Charles Edward [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States). Los Alamos Neutron Science Center (LANSCE)] (ORCID:000000019498153X). 2025-10-17. Improving Longitudinal Impedance of Inductive Inserts. https://doi.org/10.1109/tns.2025.3622124
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