First capture of antiprotons in a penning trap: A kiloelectronvolt source

G. Gabrielse*, X. Fei, K. Helmerson, S. L. Rolston, R. Tjoelker, T. A. Trainor, H. Kalinowsky, J. Haas, W. Kells

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

57 Scopus citations


Antiprotons from the Low Energy Antiproton Ring of CERN are slowed from 21 MeV to below 3 keV by being passed through 3 mm of material, mostly Be. While still in flight, the kiloelectronvolt antiprotons are captured in a Penning trap created by the sudden application of a 3-kV potential. Antiprotons are held for 100 s and more. Prospects are now excellent for much longer trapping times under better vacuum conditions. This demonstrates the feasibility of a greatly improved measurement of the inertial mass of the antiproton and opens the way to other intriguing experiments.

Original languageEnglish (US)
Pages (from-to)2504-2507
Number of pages4
JournalPhysical review letters
Issue number20
StatePublished - 1986

ASJC Scopus subject areas

  • Physics and Astronomy(all)


Dive into the research topics of 'First capture of antiprotons in a penning trap: A kiloelectronvolt source'. Together they form a unique fingerprint.

Cite this