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Proton Radiography by Multiple Coulomb Scattering with Nuclear Emulsion Detectors

1
Albert Einstein Center for Fundamental Physics, Laboratory for High Energy Physics, University of Bern, 3012 Bern, Switzerland
2
Department of Physics “Ettore Pancini”, University of Napoli Federico II, Complesso Universitario di Monte S. Angelo, 80126 Napoli, Italy
*
Author to whom correspondence should be addressed.
Current address: Department of Physics, University of Rome “La Sapienza”, P.le Aldo Moro 5, 00185 Roma, Italy.
Instruments 2019, 3(1), 19; https://doi.org/10.3390/instruments3010019
Received: 14 January 2019 / Revised: 7 February 2019 / Accepted: 15 February 2019 / Published: 17 February 2019
(This article belongs to the Special Issue 2019 Selected Papers from Instruments’ Editorial Board Members)
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Abstract

The possibility of performing proton radiography by using the proton angular spread due to Coulomb multiple scattering was investigated, for the first time, with an emulsion film detector. Two different phantoms were irradiated with the therapeutic proton beam at the Paul Scherrer Institut (PSI) in Villigen, Switzerland. The first one is a simple polymethylmethacrylate (PMMA) block having two different thicknesses (4 cm and 3 cm), and the second one is a PMMA cube with five aluminum rods embedded along a diagonal. Only one emulsion film was needed to perform the radiography, an important issue as the analysis of this kind of detector is time-consuming. Furthermore, the method showed an enhanced contrast when high atomic-number materials are traversed. This gives an advantage, when compared to proton range radiography. View Full-Text
Keywords: proton radiography; nuclear emulsion; instrumentation for hadron therapy proton radiography; nuclear emulsion; instrumentation for hadron therapy
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Braccini, S.; Carzaniga, T.S.; Pisegna, G.; Scampoli, P. Proton Radiography by Multiple Coulomb Scattering with Nuclear Emulsion Detectors. Instruments 2019, 3, 19.

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