Title :
Autoranging readout electronics for the monitoring system of the TOP-IMPLART proton therapy beam
Author :
Basile, Emilia ; Carloni, Antonello ; Castelluccio, Donato Maurizio ; Cisbani, Evaristo ; Colilli, Stefano ; De Angelis, Giorgio ; Fratoni, Rolando ; Frullani, Salvatore ; Giuliani, Fausto ; Gricia, Massimo ; Lucentini, Maurizio ; Santavenere, Fabio ; Vac
Author_Institution :
Italian Nat. Inst. of Health (ISS), Rome, Italy
Abstract :
A new proton beam monitoring system and its dedicated electronics is under development for the TOP-IMPLART proton therapy facility, based on 10 to 100 Hz pulsed proton LINAC, with maximum kinetic energy of 230 MeV. The system consists of segmented ionization chambers that will measure the beam intensity profile, position and direction to monitor the fully active 3+1D beam. The chamber readout electronics, based on multiplexed multichannel sample and hold, dynamically adapts the integration capacitance on each of its input trans-impedance amplifier to the incoming charge, reaching a rather challenging dynamic range larger than 104 and relative sensitivity better than 3%.
Keywords :
linear accelerators; nuclear electronics; radiation therapy; readout electronics; TOP-IMPLART proton therapy beam; TOP-IMPLART proton therapy facility; autoranging readout electronics; chamber readout electronics; electron volt energy 230 MeV; proton beam monitoring system; pulsed proton LINAC; relative sensitivity; segmented ionization chambers; trans-impedance amplifier; Energy resolution; Monitoring; Multiplexing; Readout electronics;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2011 IEEE
Conference_Location :
Valencia
Print_ISBN :
978-1-4673-0118-3
DOI :
10.1109/NSSMIC.2011.6154089
