FRONTier RADiography is an R&D project to assess the feasibility of digital mammography with Synchrotron Radiation at the ELETTRA Light Source in Trieste. In order to reach an acceptable time duration of the exam, a fast-and low-noise photon counting ASIC has been developed in collaboration with Aurelia Microelettronica, called Frontrad ReadOut SysTem. It is a multichannel counting system, each channel being made of a low-noise charge-sensitive preamplifier optimized for X-lay energy range (10 100 keV), a CR-RC2 shaper. a discriminator and a 16-bit counter. In older to set the discriminator threshold, a set of a global 6-bit DAC and a local (per channel) 3-bit DAC has been implemented within the ASIC. We report on the measurements done with the 8-channel prototype chip and the comparison with the simulation results.

FROST: a low-noise high-rate photon counting ASIC for X-ray applications

PREST, MICHELA;
2001

Abstract

FRONTier RADiography is an R&D project to assess the feasibility of digital mammography with Synchrotron Radiation at the ELETTRA Light Source in Trieste. In order to reach an acceptable time duration of the exam, a fast-and low-noise photon counting ASIC has been developed in collaboration with Aurelia Microelettronica, called Frontrad ReadOut SysTem. It is a multichannel counting system, each channel being made of a low-noise charge-sensitive preamplifier optimized for X-lay energy range (10 100 keV), a CR-RC2 shaper. a discriminator and a 16-bit counter. In older to set the discriminator threshold, a set of a global 6-bit DAC and a local (per channel) 3-bit DAC has been implemented within the ASIC. We report on the measurements done with the 8-channel prototype chip and the comparison with the simulation results.
Digital mammography; VLSI readout ASIC; single photon counting
Prest, Michela; Vallazza, E; Chiavacci, M; Mariani, R; Motto, S; Neri, M; Scantamburlo, N; Arfelli, F; Conighi, A; Lengo, R; Olivo, A; Pani, S; Poropat, P; Rashevsky, A; Rigon, L; Tromba, G; Castelli, E.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11383/1791116
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