The Cleopatra ASIC is a 12-channel prototype ASIC for the readout of hydrogenated amorphous silicon sensors used for real-time dosimetry in radiation diagnostic and radiation therapy. The architecture is based on a current to frequency conversion based on the recycling integrator principle in order to cover a dynamic range of four orders of magnitude with high linearity. Three different input amplifier configurations have been implemented in order to check the trade-off between detector capacitance and maximum output frequency. Cleopatra has been designed in CMOS 28 nm technology and succesfully tested in laboratory.
Cleopatra: a 12-channel recycling integrator ASIC for the readout of hydrogenated amorphous silicon detectors in radiotherapy dosimetry / Mazza, G.; Wheadon, R.; Lenta, F.; Buti, C.; Fabi, M.; Grimani, C.; Pallotta, S.; Sabbatini, F.; Talamonti, C.; Villani, M.; Aziz, S.; Calcagnile, L.; Caricato, A.P.; Martino, M.; Maruccio, G.; Monteduro, A.G.; Quarta, G.; Rizzato, S.; Catalano, R.; Cirrone, G.A.P.; Cuttone, G.; Guarrera, M.C.; Petringa, G.; Frontini, L.; Liberali, V.; Stabile, A.; Vasquez, M.; Croci, T.; Ionica, M.; Kanxheri, K.; Menichelli, M.; Morozzi, A.; Moscatelli, F.; Passeri, D.; Pedio, M.; Peverini, F.; Placidi, P.; Servoli, L.; Tosti, L.; Zema, N.; Caputo, D.; De Cesare, G.; Lovecchio, N.; Nascetti, A.; Calvo, D.; Cirio, R.; De Remigis, P.; Dunand, S.; Thomet, J.E.; Large, M.; Petasecca, M.; Bashiri, A.; Piccolo, L.; Wyrsch, N.; null, null. - In: JOURNAL OF INSTRUMENTATION. - ISSN 1748-0221. - ELETTRONICO. - 20:(2025), pp. C01034.0-C01034.0. [10.1088/1748-0221/20/01/c01034]
Cleopatra: a 12-channel recycling integrator ASIC for the readout of hydrogenated amorphous silicon detectors in radiotherapy dosimetry
Buti, C.;Fabi, M.;Pallotta, S.;Talamonti, C.;Villani, M.;
2025
Abstract
The Cleopatra ASIC is a 12-channel prototype ASIC for the readout of hydrogenated amorphous silicon sensors used for real-time dosimetry in radiation diagnostic and radiation therapy. The architecture is based on a current to frequency conversion based on the recycling integrator principle in order to cover a dynamic range of four orders of magnitude with high linearity. Three different input amplifier configurations have been implemented in order to check the trade-off between detector capacitance and maximum output frequency. Cleopatra has been designed in CMOS 28 nm technology and succesfully tested in laboratory.
I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
