During Particle Therapy treatments the patient irradiation produces, among different types of secondary radiation, an abundant flux of neutrons that can release a significant dose far away from the tumour region. A precise measurement of their flux, energy and angle distributions is eagerly needed in order to improve the Treatment Planning Systems software and to properly take into account the risk of late complications in the whole body. The technical challenges posed by a neutron detector aiming for high detection efficiency and good backtracking precision will be addressed within the MONDO project, whose main goal is to develop a tracking detector targeting fast and ultra-fast secondary neutrons. The neutron tracking principle is based on the reconstruction of two consequent elastic scattering interactions of a neutron with a target material. Reconstructing the recoiling protons it is hence possible to measure the energy and incoming direction of the neutron. Plastic scintillators will be used as scattering and detection media: the tracker is being developed as a matrix of squared scintillating fibres of 250μm side. The light produced and collected in fibres will be amplified using a triple GEM-based image intensifier and acquired using CMOS Single Photon Avalanche Diode arrays. Using therapeutic beams, the principal detector goal will be the measurement of the neutron production yields, as a function of production angle and energy.
The MONDO project : A secondary neutron tracker detector for particle therapy / S.M. Valle, G. Battistoni, V. Patera, D. Pinci, A. Sarti, A. Sciubba, E. Spiriti, M. Marafini. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - 845(2017 Feb 11), pp. 556-559. ((Intervento presentato al 14. convegno Vienna Conference on Instrumentation tenutosi a Wien nel 2016.
|Titolo:||The MONDO project : A secondary neutron tracker detector for particle therapy|
VALLE, SERENA MARTA (Primo)
|Parole Chiave:||GEM; neutrons; particle therapy; spad; tracking detectors; instrumentation; nuclear and high energy physics|
|Settore Scientifico Disciplinare:||Settore FIS/07 - Fisica Applicata(Beni Culturali, Ambientali, Biol.e Medicin)|
|Data di pubblicazione:||11-feb-2017|
|Enti collegati al convegno:||Institute of High Energy Physics (HEPHY)|
Atominstitut, TU Wien
|Data ahead of print / Data di stampa:||mag-2016|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1016/j.nima.2016.05.001|
|Appare nelle tipologie:||01 - Articolo su periodico|