Micro Pattern Ionization Chamber with Adaptive Amplifiers as Dose Delivery Monitor for Therapeutic Proton LINAC

Cisbani, Evaristo; Ampollini, Alessandro; Basile, Emilia; Carloni, Antonello; Castelluccio, Donato; Colilli, Stefano; De Angelis, Giorgio; Frullani, Salvatore; Ghio, Francesco; Giuliani, Fausto; Gricia, Massimo; Lucentini, Maurizio; Nenzi, Paolo; Notaro, Carmelo; Picardi, Luigi; Placido, Cristina; Ronsivalle, Concetta; Santavenere, Fabio; Spurio, Alessandro; Vacca, Giuseppe; Vadrucci, Monia

doi:10.18429/JACoW-IBIC2016-TUPG51

Joint Accelerator Conferences Website

The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.

RIS citation export for TUPG51: Micro Pattern Ionization Chamber with Adaptive Amplifiers as Dose Delivery Monitor for Therapeutic Proton LINAC

TY - CONF
AU - Cisbani, E.
AU - Ampollini, A.
AU - Basile, E.
AU - Carloni, A.
AU - Castelluccio, D.M.
AU - Colilli, S.
AU - De Angelis, G.
AU - Frullani, S.
AU - Ghio, F.
AU - Giuliani, F.
AU - Gricia, M.
AU - Lucentini, M.
AU - Nenzi, P.
AU - Notaro, C.
AU - Picardi, L.
AU - Placido, C.
AU - Ronsivalle, C.
AU - Santavenere, F.
AU - Spurio, A.
AU - Vacca, G.
AU - Vadrucci, M.
ED - Schaa, Volker RW
TI - Micro Pattern Ionization Chamber with Adaptive Amplifiers as Dose Delivery Monitor for Therapeutic Proton LINAC
J2 - Proc. of IBIC2016, Barcelona, Spain, Sept. 13-18, 2016
C1 - Barcelona, Spain
T2 - International Beam Instrumentation Conference
T3 - 5
LA - english
AB - A dedicated dose delivery monitor is under development for the TOP-IMPLART proton accelerator, the first LINAC for cancer therapy. It is expected to measure the intensity profile to precisely monitor the fully active 3+1D (x/y/z and intensity) dose delivery of each short pulses (few micro-s, 0.1-10 micro-A pulse current at ~100 Hz) of the therapeutic proton beam (up to 230 MeV). The monitor system consists of planar gas chambers operating in ionization regime with cathode plane made ofμpattern pads alternately connected by orthogonal strips*. The dedicated readout electronics features trans-impedance amplifier that dynamically adapts its integrating feedback capacitance to the incoming amount of charge, then opportunistically changing its gain. The measured absolute sensitivity is about 100 fC (better than 0.03 relative sensitivity), the dynamic range up to 10000 (2 gain settings) with time response at the level of few ns, and virtually no dead time. Small scale chamber prototype (0.875 mm pitch pads) and readout electronics have been tested and characterized under both electron (5 MeV) and proton (up to 27 MeV) beams.
PB - JACoW
CP - Geneva, Switzerland
SP - 465
EP - 468
KW - proton
KW - electronics
KW - linac
KW - cathode
KW - factory
DA - 2017/02
PY - 2017
SN - 978-3-95450-177-9
DO - 10.18429/JACoW-IBIC2016-TUPG51
UR - http://jacow.org/ibic2016/papers/tupg51.pdf
ER -