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

fYear

2011

fDate

23-29 Oct. 2011

Firstpage

717

Lastpage

720

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2011 IEEE

Conference_Location

Valencia

ISSN

1082-3654

Print_ISBN

978-1-4673-0118-3

Type

conf

DOI

10.1109/NSSMIC.2011.6154089

Filename

6154089