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Optimizing Antihydrogen Production via Slow Plasma Merging

Fuente: arXiv

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Bibliographic Details
Main Authors:	Hunter, E D, Bumbar, M, Amsler, C, Bayo, M, Breuker, H, Cerwenka, M, Costantini, G, Ferragut, R, Giammarchi, M, Gligorova, A, Gosta, G, Hori, M, Killian, C, Kraxberger, V, Kuroda, N, Lanz, A, Leali, M, Maero, G, Malbrunot, C, Mascagna, V, Matsuda, Y, Migliorati, S, Murtagh, D J, Romé, M, Sheldon, R E, Simon, M C, Tajima, M, Toso, V, Ulmer, S, Venturelli, L, Weiser, A, Widmann, E
Format:	Preprint
Published:	2025
Subjects:	Atomic Physics High Energy Physics - Experiment Plasma Physics
Online Access:	Acceder al recurso
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_version_	1866914146579120128
author	Hunter, E D Bumbar, M Amsler, C Bayo, M Breuker, H Cerwenka, M Costantini, G Ferragut, R Giammarchi, M Gligorova, A Gosta, G Hori, M Killian, C Kraxberger, V Kuroda, N Lanz, A Leali, M Maero, G Malbrunot, C Mascagna, V Matsuda, Y Migliorati, S Murtagh, D J Romé, M Sheldon, R E Simon, M C Tajima, M Toso, V Ulmer, S Venturelli, L Weiser, A Widmann, E
author_facet	Hunter, E D Bumbar, M Amsler, C Bayo, M Breuker, H Cerwenka, M Costantini, G Ferragut, R Giammarchi, M Gligorova, A Gosta, G Hori, M Killian, C Kraxberger, V Kuroda, N Lanz, A Leali, M Maero, G Malbrunot, C Mascagna, V Matsuda, Y Migliorati, S Murtagh, D J Romé, M Sheldon, R E Simon, M C Tajima, M Toso, V Ulmer, S Venturelli, L Weiser, A Widmann, E
contents	We measure the time-dependent temperature and density distribution of antiprotons and positrons while slowly combining them to make antihydrogen atoms in a nested Penning-Malmberg trap. The total antihydrogen yield and the number of atoms escaping the trap as a beam are greatest when the positron temperature is lowest and when antiprotons enter the positron plasma at the smallest radius. We control these parameters by changing the rate at which we lower the electrostatic barrier between the antiproton and positron plasmas and by heating the positrons. With the optimal settings, we produce $2.3\times 10^6$ antihydrogen atoms per $15$-minute run, surpassing the previous state of the art -- $3.1\times 10^4$ atoms in $4$ minutes -- by a factor of $20$.
format	Preprint
id	arxiv_https___arxiv_org_abs_2511_06883
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	Optimizing Antihydrogen Production via Slow Plasma Merging Hunter, E D Bumbar, M Amsler, C Bayo, M Breuker, H Cerwenka, M Costantini, G Ferragut, R Giammarchi, M Gligorova, A Gosta, G Hori, M Killian, C Kraxberger, V Kuroda, N Lanz, A Leali, M Maero, G Malbrunot, C Mascagna, V Matsuda, Y Migliorati, S Murtagh, D J Romé, M Sheldon, R E Simon, M C Tajima, M Toso, V Ulmer, S Venturelli, L Weiser, A Widmann, E Atomic Physics High Energy Physics - Experiment Plasma Physics We measure the time-dependent temperature and density distribution of antiprotons and positrons while slowly combining them to make antihydrogen atoms in a nested Penning-Malmberg trap. The total antihydrogen yield and the number of atoms escaping the trap as a beam are greatest when the positron temperature is lowest and when antiprotons enter the positron plasma at the smallest radius. We control these parameters by changing the rate at which we lower the electrostatic barrier between the antiproton and positron plasmas and by heating the positrons. With the optimal settings, we produce $2.3\times 10^6$ antihydrogen atoms per $15$-minute run, surpassing the previous state of the art -- $3.1\times 10^4$ atoms in $4$ minutes -- by a factor of $20$.
title	Optimizing Antihydrogen Production via Slow Plasma Merging
topic	Atomic Physics High Energy Physics - Experiment Plasma Physics
url	https://arxiv.org/abs/2511.06883