The FOOT (FragmentatiOn Of Target) experiment aims to measure double differential fragmentation cross-sections for applications in Particle Therapy and space radiation protection. A critical component of the apparatus is its magnetic spectrometer, composed of two Halbach-configured dipole magnets (M1 and M2) using NdFeB permanent magnets, designed for high field uniformity and stability. A full 3D magnetic model was developed using the OPERA solver, incorporating detailed BH curves and a refined meshing strategy to ensure precision along the beam axis. The resulting field map, essential for Monte Carlo simulations in FLUKA, was validated through high-resolution magnetic measurements along the longitudinal and radial axes using a Hall probe. The comparison revealed agreement within 1.4% over most of the field region. Radial scans confirmed uniformity within 1% up to 10 mm from the axis, with minor misalignments attributed to mechanical tolerances. These results confirm the accuracy of the magnetic model and its suitability for precise momentum reconstruction in the FOOT spectrometer.
Characterization of a permanent magnetic dipolar system for the FOOT experiment / Trigilio, Antonio; Sabbatini, Lucia; Alexandrov, Andrey; Alpat, Behcet; Ambrosi, Giovanni; Argirò, Stefano; Barbanera, Mattia; Bartosik, Nazar; Battistoni, Giuseppe; Bisogni, Maria Giuseppina; Boccia, Vincenzo; Brambilla, Sergio; Cavanna, Francesca; Cerello, Piergiorgio; Ciarrocchi, Esther; D'Ambrosio, Nicola; De Gregorio, Angelica; De Lellis, Giovanni; Di Crescenzo, Antonia; Di Ruzza, Benedetto; Dondi, Matilde; Donetti, Marco; Dong, Yunsheng; Durante, Marco; Faccini, Riccardo; Ferrero, Veronica; Finck, Christian; Fiorina, Elisa; Francesconi, Marco; Franchini, Matteo; Franciosini, Gaia; Galati, Giuliana; Galli, Luca; Ionica, Maria; Iuliano, Antonio; Kanxheri, Keida; Kharpuse, Bharat; Kraan, Aafke Christine; Lauria, Adele; Lopez Torres, Ernesto; Maggipinto, Tommaso; Magi, Marco; Manna, Alice; Marafini, Michela; Masci, Simone; Massa, Maurizio; Massimi, Cristian; Mattei, Ilaria; Mengarelli, Alberto; Mereghetti, Alessio; Mirabelli, Riccardo; Moggi, Andrea; Montesi, Maria Cristina; Morone, Maria Cristina; Morrocchi, Matteo; Muraro, Silvia; Pastrone, Nadia; Patera, Vincenzo; Pennazio, Francesco; Peverini, Francesca; Pisanti, Claudia; Placidi, Pisana; Pullia, Marco; Quattrini, Flaminia; Ramello, Luciano; Reidel, Claire-Anne; Ridolfi, Riccardo; Salvi, Lucia; Sanelli, Claudio; Sarti, Alessio; Sato, Osamu; Savazzi, Simone; Scavarda, Lorenzo; Schiavi, Angelo; Schuy, Christoph; Scifoni, Emanuele; Servoli, Leonello; Silvestre, Gianluigi; Sitta, Mario; Spadavecchia, Benedetto; Spighi, Roberto; Spiriti, Eleuterio; Testa, Luana; Tioukov, Valeri; Tomassini, Sandro; Tommasino, Francesco; Toppi, Marco; Traini, Giacomo; Ubaldi, Giacomo; Valetti, Alessandro; Vanstalle, Marie; Villa, Mauro; Weber, Ulrich; Zarrella, Roberto; Zoccoli, Antonio; Vannozzi, Alessandro. - In: JOURNAL OF INSTRUMENTATION. - ISSN 1748-0221. - 20:09(2025), pp. T09010.01-T09010.16. [10.1088/1748-0221/20/09/t09010]
Characterization of a permanent magnetic dipolar system for the FOOT experiment
Di Ruzza, Benedetto;Durante, Marco;Galli, Luca;Scifoni, Emanuele;Tommasino, Francesco;
2025-01-01
Abstract
The FOOT (FragmentatiOn Of Target) experiment aims to measure double differential fragmentation cross-sections for applications in Particle Therapy and space radiation protection. A critical component of the apparatus is its magnetic spectrometer, composed of two Halbach-configured dipole magnets (M1 and M2) using NdFeB permanent magnets, designed for high field uniformity and stability. A full 3D magnetic model was developed using the OPERA solver, incorporating detailed BH curves and a refined meshing strategy to ensure precision along the beam axis. The resulting field map, essential for Monte Carlo simulations in FLUKA, was validated through high-resolution magnetic measurements along the longitudinal and radial axes using a Hall probe. The comparison revealed agreement within 1.4% over most of the field region. Radial scans confirmed uniformity within 1% up to 10 mm from the axis, with minor misalignments attributed to mechanical tolerances. These results confirm the accuracy of the magnetic model and its suitability for precise momentum reconstruction in the FOOT spectrometer.| File | Dimensione | Formato | |
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