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- W4289938360 abstract "We report spectral and imaging performance of a pixelated CdZnTe detector custom designed for the emph{MeVCube} project: a small Compton telescope on a CubeSat platform. emph{MeVCube} is expected to cover the energy range between $200;mathrm{keV}$ and $4;mathrm{MeV}$, with performance comparable to the last generation of larger satellites. In order to achieve this goal, an energy resolution of few percent in full width at half maximum (FWHM) and a $3$-D spatial resolution of few millimeters for the individual detectors are needed. The severe power constraints present in small satellites require very low power read-out electronics for the detector. Our read-out is based on the VATA450.3 ASIC developed by emph{Ideas}, with a power consumption of only $0.25;mathrm{mW/channel}$, which exhibits good performance in terms of dynamic range, noise and linearity. A $2.0;mathrm{cm} times 2.0;mathrm{cm} times 1.5;mathrm{cm}$ CdZnTe detector, with a custom $8 times 8$ pixel anode structure read-out by a VATA450.3 ASIC, has been tested. A preliminary read-out system for the cathode, based on a discrete emph{Amptek} A250F charge sensitive pre-amplifier and a DRS4 ASIC, has been implemented. An energy resolution around $3%$ FWHM has been measured at a gamma energy of $662;mathrm{keV}$; at $200;mathrm{keV}$ the average energy resolution is $6.5%$, decreasing to $lesssim 2%$ at energies above $1;mathrm{MeV}$. A $3$-D spatial resolution of $approx 2,mathrm{mm}$ is achieved." @default.
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- W4289938360 date "2022-08-01" @default.
- W4289938360 modified "2023-10-18" @default.
- W4289938360 title "Characterization of a CdZnTe detector for a low-power CubeSat application" @default.
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