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Reducing the background temperature for cyclotron cooling in a cryogenic Penning–Malmberg trap

Submitted by kuroda on Fri, 09/01/2023 - 09:19
TitleReducing the background temperature for cyclotron cooling in a cryogenic Penning–Malmberg trap
Publication TypeJournal Article
Year of Publication2022
AuthorsAmsler, C, Breuker, H, Chesnevskaya, S, Costantini, G, Ferragut, R, Giammarchi, M, Gligorova, A, Gosta, G, Higaki, H, Hunter, ED, Killian, C, Kletzl, V, Kraxberger, V, Kuroda, N, Lanz, A, Leali, M, Mäckel, V, Maero, G, Malbrunot, C, Mascagna, V, Matsuda, Y, Migliorati, S, Murtagh, DJ, Nagata, Y, Nanda, A, Nowak, L, Pasino, E, Romé, M, Simon, MC, Tajima, M, Toso, V, Ulmer, S, Venturelli, L, Weiser, A, Widmann, E, Wolz, T, Yamazaki, Y, Zmeskal, J
JournalPhysics of Plasmas
Volume29
Pagination083303
Date Published08
ISSN1070-664X
Abstract

Magnetized nonneutral plasma composed of electrons or positrons couples to the local microwave environment via cyclotron radiation. The equilibrium plasma temperature depends on the microwave energy density near the cyclotron frequency. Fine copper meshes and cryogenic microwave absorbing material were used to lower the effective temperature of the radiation environment in ASACUSA's Cusp trap, resulting in significantly reduced plasma temperature.
URLhttps://doi.org/10.1063/5.0093360
DOI10.1063/5.0093360