Phase space compression of a positive muon beam in two spatial dimensions
We present the first demonstration of simultaneous phase space compression in two spatial dimensions of a positive muon beam, the first stage of the novel high-brightness muon beam under development by the muCool collaboration at the Paul Scherrer Institute. The keV-energy, sub-mm size beam would enable a factor 10^5 <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:msup> <mml:mn>10</mml:mn> <mml:mn>5</mml:mn> </mml:msup> </mml:math> improvement in brightness for precision \mu <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mi>μ</mml:mi> </mml:math> SR, and atomic and particle physics measurements with positive muons. This compression is achieved within a cryogenic helium gas target with a strong density gradient, placed in a homogeneous magnetic field, under the influence of a complex electric field. In the next phase, the muon beam will be extracted into vacuum.
Authors
- Aldo Antognini (ORCID: https://orcid.org/0000-0002-1837-0419)
- V. Bondar
- K. Kirch (ORCID: https://orcid.org/0000-0002-1720-7636)
- A. Knecht (ORCID: https://orcid.org/0000-0002-3767-950X)
- I. Belošević (ORCID: https://orcid.org/0000-0002-8001-8889)
- Alessandro Papa (ORCID: https://orcid.org/0000-0001-8984-3036)
- N. J. Ayres (ORCID: https://orcid.org/0000-0002-5565-0807)
- M. Sakurai (ORCID: https://orcid.org/0000-0001-5876-0748)
- M. Hildebrandt (ORCID: https://orcid.org/0000-0002-9425-5543)
- A. Eggenberger
- Ivan Solovyev (ORCID: https://orcid.org/0000-0003-4254-6012)
- R. Iwai (ORCID: https://orcid.org/0009-0002-3645-5683)
- J. Nuber (ORCID: https://orcid.org/0000-0001-5257-5891)
- Giuseppe Lospalluto (ORCID: https://orcid.org/0009-0002-5499-6758)
- D. Taqqu (ORCID: https://orcid.org/0000-0001-9707-7490)
- T. Yan (ORCID: https://orcid.org/0009-0000-2293-8030)
Institutions
- University of Pisa (IT)
- Paul Scherrer Institute (CH)
- ETH Zurich (CH)
- Istituto Nazionale di Fisica Nucleare, Sezione di Pisa (IT)
- École Polytechnique Fédérale de Lausanne (CH)
- Suranaree University of Technology (TH)
Publication Details
- Journal
- SciPost Physics Core
- Published
- 2025-10-20
- DOI
- https://doi.org/10.21468/scipostphyscore.8.4.071
- Citations
- 1
- Primary Topic
- Muon and positron interactions and applications
- Type
- article
- Field-Weighted Citation Impact
- 0.86