Demonstration of Muon-Beam Transverse Phase-Space Compression
| Autor: | Andreas Eggenberger, K. S. Khaw, Florian M. Piegsa, Gunther Wichmann, Andreas Knecht, Ryoto Iwai, Narongrit Ritjoho, C. Petitjean, Angela Papa, Thomas J. Phillips, N. J. Ayres, V. Bondar, Klaus Kirch, Aldo Antognini, D. Taqqu, Daniel M. Kaplan, Ivana Belosevic, Alexey Stoykov, Malte Hildebrandt |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Physics
Accelerator Physics (physics.acc-ph) Muon Density gradient 010308 nuclear & particles physics Muonium General Physics and Astronomy FOS: Physical sciences 01 natural sciences Magnetic field Transverse plane Compression (functional analysis) Phase space 0103 physical sciences Physics::Accelerator Physics Physics - Accelerator Physics Atomic physics 010306 general physics Beam (structure) |
| Zdroj: | Physical Review Letters, 125 (16) |
| ISSN: | 0031-9007 1079-7114 |
| Popis: | We demonstrate efficient transverse compression of a 12.5 MeV/c muon beam stopped in a helium gas target featuring a vertical density gradient and crossed electric and magnetic fields. The muon stop distribution extending vertically over 14 mm was reduced to a 0.25 mm size (rms) within 3.5 μs. The simulation including cross sections for low-energy μ+-He elastic and charge exchange (μ+↔ muonium) collisions describes the measurements well. By combining the transverse compression stage with a previously demonstrated longitudinal compression stage, we can improve the phase space density of a μ+ beam by a factor of 1010 with 10−3 efficiency. Physical Review Letters, 125 (16) ISSN:0031-9007 ISSN:1079-7114 |
| Databáze: | OpenAIRE |
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