| Title: |
The FAMU experiment at RIKEN-RAL for high-precision HFS muon spectroscopy |
| Authors: |
Bonesini, M.; Benocci, R.; Adamczak, A.; Bakalov, D.; Baldazzi, G.; Baruzzo, M.; Bertoni, R.; Capra, S.; Cirrincione, D.; Clemenza, M.; Colace, L.; Danailov, M.; Danev, P.; de Bari, A.; De Vecchi, C.; Di Ferdinando, D.; Fasci, E.; Gaigher, R.; Gianfrani, L.; Hillier, A.D.; Ishida, K.; Lord, J.S.; Menegolli, A.; Mocchiutti, E.; Monzani, S.; Moretti, L.; Morgante, G.; Pizzolotto, C.; Pullia, A.; Pullia, M.; Ramponi, R.; Roman, H.E.; Rossella, M.; Rossini, R.; Sbrizzi, A.; Stoilov, M.; Suárez-Vargas, J.J.; Toci, G.; Tortora, L.; Vallazza, E.; Yokoyama, K.; Vacchi, A. |
| Source: |
Journal of Instrumentation ; volume 21, issue 01, page C01029 ; ISSN 1748-0221 |
| Publisher Information: |
IOP Publishing |
| Publication Year: |
2026 |
| Description: |
The FAMU experiment at RIKEN-RAL aims to measure with high precision the ground state hyperfine splitting (1S HFS) of muonic hydrogen and thus determine the proton Zemach radius. A novel method based on the detection of X-rays emitted by μ O after the muon transfer from μH to oxygen is used. A high performance X-ray detectors' system and an innovative mid-infrared (MIR) laser system were therefore developed. The X-ray detector's system is mainly based on LaBr 3 :Ce crystals read by SiPM arrays. From the MIR laser frequency value, known with precision < 10 -5 , the energy of the HFS transition may be accurately measured, as Δ E HFS = hν HFS . |
| Document Type: |
article in journal/newspaper |
| Language: |
unknown |
| DOI: |
10.1088/1748-0221/21/01/c01029 |
| DOI: |
10.1088/1748-0221/21/01/C01029 |
| DOI: |
10.1088/1748-0221/21/01/C01029/pdf |
| Availability: |
https://doi.org/10.1088/1748-0221/21/01/c01029; https://iopscience.iop.org/article/10.1088/1748-0221/21/01/C01029; https://iopscience.iop.org/article/10.1088/1748-0221/21/01/C01029/pdf |
| Rights: |
http://creativecommons.org/licenses/by/4.0/ ; https://iopscience.iop.org/info/page/text-and-data-mining |
| Accession Number: |
edsbas.4306DE02 |
| Database: |
BASE |