Successful first tests in development of CZT Imaging Calorimeter

We want to congratulate NASA/ Goddard Space Flight Center (GSFC) scientists with their recent progress on the development of their new CZT Imaging Calorimeter. In the first test an excellent 0.8% energy resolution for Cs-137 radioactive source (662 keV) has been achieved.

Cs-137 spectrum obtained by NASA with the GDS-100.


The CZT Imaging Calorimeter is one of the main components of the gamma-ray astrophysical space mission concepts AMEGO (All-sky Medium Energy Gamma-ray Observatory) and GECCO (Galactic Explorer with a Coded Aperture Mask Compton Telescope), presently being developed by GSFC in collaboration with several other institutions . These missions will be focused on the main problems in astrophysics which include the origin of gravitational waves and high-energy neutrino, the Fermi Bubbles, astrophysical jets, compact objects, dark matter and nuclear line spectroscopy.

The CZT Imaging Calorimeter is being developed by GSFC and Brookhaven National Laboratory (BNL) and needs a compact and high-resolution readout system, customized for the space experiments. As part of this test, the team is considering the use of the GDS-100 by IDEAS. The GDS-100 has been developed around our ASICs with charge-sensitive pre-amplifier inputs and multiple gain settings. It can serve up to four 121-pixel CZT detectors.

This work is funded by NASA/APRA grant 80NSSC20K0573.

GDS-100 product page. For more information about the GDS-100, please contact IDEAS.

The GDS-100 readout system.

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