18-22 February 2019
Vienna University of Technology
Europe/Vienna timezone

First fragmentation measurements with the ΔE-TOF detector of the FOOT experiment

21 Feb 2019, 14:50
20m
EI8 ()

EI8

Talk Medical Applications Medical Applications

Speaker

Aafke Kraan

Description

The FOOT experiment was designed to identify the fragments produced in the human body during hadrontherapy and to measure their production cross-section. The ΔE-TOF detector of the FOOT apparatus estimates the atomic number Z and velocity β of the fragments by measuring the energy deposited (ΔE) in two layers of orthogonal plastic scintillator bars and the time-of-flight (TOF) with respect to a trigger detector. The detector performances have been already evaluated in a previous study at the CNAO hadrontherapy center of Pavia, obtaining 50 ps time resolution and 6% energy resolution, for 100-400 MeV/u carbon ions. In this work, the results of the first fragment identification measurements performed at CNAO are presented. A plastic target was irradiated with carbon ions of 330 MeV/u. Two plastic scintillator bars coupled to silicon photomultipliers were placed at a ~8° angle with respect to the beam line to remove the primary beam component and measure fragments interactions only. Events that triggered both bars were recorded with a WaveDAQ-based electronics. The energy deposited in the two bars and the TOF between them were measured. The atomic number of the detected fragments was determined, indicating that particles with Z=1 and Z=2 were detected at a ~8° angle. Currently, we are reproducing the experimental set-up with Monte Carlo simulations, and a preliminary comparison confirms these results.

Primary authors

Dr Esther Ciarrocchi (University of Pisa and INFN Section of Pisa) Nicola Belcari (University of Pisa and INFN Section of Pisa) Sandro Bianucci (INFN Section of Pisa) Niccolò Camarlinghi (University of Pisa and INFN Section of Pisa) Pietro Carra (University of Pisa and INFN Section of Pisa) Alberto Del Guerra (University of Pisa and INFN Section of Pisa) Patrizia De Maria (University of Pisa and INFN Section of Pisa) Marco Francesconi (University of Pisa and INFN Section of Pisa) Luca Galli (INFN Section of Pisa) Aafke Kraan Aafke Kraan (INFN Section of Pisa) Andrea Moggi (INFN Section of Pisa) Matteo Morrocchi (INFN Section of Pisa) Silvia Muraro (INFN Section of Pisa) Marco Pullia (Fondazione CNAO) Fabrizio Raffaelli (INFN Section of Pisa) Valeria Rosso (University of Pisa and INFN Section of Pisa) Giancarlo Sportelli (University of Pisa and INFN Section of Pisa) Maria Giuseppina Bisogni (University of Pisa and INFN Section of Pisa)

Presentation Materials