{
  "abstract": "CERN's AD/ELENA ``antimatter factory'' - unique worldwide - serves several experiments, all of which use electromagnetic traps to accumulate antiprotons for fundamental science. The GBAR experiment employs a charge-exchange reaction between an antiproton beam and a positronium cloud to produce antihydrogen for gravitational studies. GBAR has also pioneered an electrostatic scheme using a pulsed drift tube to decelerate the 100 keV antiproton beam, rather than slowing the antiprotons in a foil, as is commonly done in other experiments. Following first results producing a 6 keV antihydrogen beam directly after the decelerator, a trap has now been installed to increase the production rate. The emittance growth resulting from the deceleration is reduced in the trap by Coulomb interaction with a cold electron cloud. The antiproton cloud is further compressed using rotating wall cooling and can be re-accelerated up to energies of 10 keV, including a time focus. Here we describe the commissioning results, trapping 56(3)% of the ELENA beam, delivering $6.4(0.4)~\\times~10^{6}$ antiprotons per shot for improved production of antihydrogen, and a record accumulation of over $6.4(0.4)~\\times~10^{7}$ antiprotons in under 35 minutes.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2603.21168",
  "author_total": 38,
  "authors": [
    {
      "name": "B Lee"
    },
    {
      "name": "B Kim"
    },
    {
      "name": "P Adrich"
    },
    {
      "name": "I Belosevic"
    },
    {
      "name": "M Chung"
    },
    {
      "name": "P Comini"
    },
    {
      "name": "P Crivelli"
    },
    {
      "name": "P Debu"
    },
    {
      "name": "S Geffroy"
    },
    {
      "name": "P Guichard"
    },
    {
      "name": "P.A. Hervieux"
    },
    {
      "name": "L Hilico"
    },
    {
      "name": "P Indelicato"
    },
    {
      "name": "S Jonsell"
    },
    {
      "name": "S Kim"
    },
    {
      "name": "E.S Kim"
    },
    {
      "name": "N Kuroda"
    },
    {
      "name": "L Liszkay"
    },
    {
      "name": "D Lunney"
    },
    {
      "name": "G Manfredi"
    },
    {
      "name": "B Mansoulié"
    },
    {
      "name": "M Matusiak"
    },
    {
      "name": "V Nesvizhevsky"
    },
    {
      "name": "François Nez"
    },
    {
      "name": "K Park"
    },
    {
      "name": "E Pérez"
    },
    {
      "name": "P Pérez"
    },
    {
      "name": "C Regenfus"
    },
    {
      "name": "C Roumegou"
    },
    {
      "name": "J.Y Roussé"
    },
    {
      "name": "F. Schmidt Kaler"
    },
    {
      "name": "K Szymczyk"
    },
    {
      "name": "T.A Tanaka"
    },
    {
      "name": "B Tuchming"
    },
    {
      "name": "D.P van der Werf"
    },
    {
      "name": "D Won"
    },
    {
      "name": "S Wronka"
    },
    {
      "name": "P Yzombard"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/79410n297a5v7.bib",
  "cited_by": 0,
  "doi": "10.1088/1361-6471/ae7456",
  "fulltext_url": null,
  "id": "79410n297a5v7",
  "issns": [
    "0954-3899",
    "1361-6471"
  ],
  "landing_url": "https://hal.science/hal-05568908v1",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.phys"
    ],
    [
      "hal",
      "1.phys.hexp"
    ],
    [
      "openalex",
      "2202|Particle accelerators and beam dynamics"
    ]
  ],
  "openalex": "W7162632894",
  "pdf_url": "https://hal.science/hal-05568908/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-21",
  "publisher": "IOP Publishing",
  "ris": "https://research.draconitic.com/paper/79410n297a5v7.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:00Z",
      "native_id": "hal-05568908",
      "source": "hal",
      "url": "https://hal.science/hal-05568908v1"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "hal:1.phys.hexp",
      "subfield": "high-energy"
    }
  ],
  "title": "Record accumulation of antiprotons in a Penning-Malmberg Trap and their preparation for improved production of antihydrogen beams",
  "title_text": "Record accumulation of antiprotons in a Penning-Malmberg Trap and their preparation for improved production of antihydrogen beams",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:00Z",
  "url": "https://research.draconitic.com/paper/79410n297a5v7",
  "venue": "Journal of Physics G: Nuclear and Particle Physics",
  "versions": []
}