A Virtual Frisch-Grid Geometry-Based CZT Gamma Detector for In-Field Radioisotope Identification
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arXiv
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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866915401468739584 |
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| author | Maj, Piotr Pinaroli, Giovanni Bolotnikov, Aleksey Carini, Gabriella A. Deptuch, Grzegorz W. Gorni, Dominik S. Herrmann, Sven Pinelli, Donald Pinz, Joseph Verderosa, Antonio |
| author_facet | Maj, Piotr Pinaroli, Giovanni Bolotnikov, Aleksey Carini, Gabriella A. Deptuch, Grzegorz W. Gorni, Dominik S. Herrmann, Sven Pinelli, Donald Pinz, Joseph Verderosa, Antonio |
| contents | We present a Virtual Frisch-Grid geometry-based CZT gamma detector developed for identifying different radioisotopes over an energy range from single keV up to 2 MeV, and useful for efficient characterization of CZT crystals. The detector is built with a 3 x 3 matrix of CZT crystals, each measuring approximately 6 mm x 6 mm x 15 mm. The charge generated within the sensor's active volume is read out via an anode connected directly to the AVG3_Dev integrated circuit. A current signal induced by charge drift is collected on side pads of the crystals, enabling reconstruction of a 3D interaction position. This paper discusses the design, development, and performance of the standalone, mobile detector system, which integrates the AVG3_Dev readout IC developed at Brookhaven National Laboratory, high-speed FPGA-based with per-channel digital signal processing, and embedded system capabilities. The device is compact, battery-powered, and supports wireless data streaming, making it suitable for field operations towards radioisotope identification. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_15177 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A Virtual Frisch-Grid Geometry-Based CZT Gamma Detector for In-Field Radioisotope Identification Maj, Piotr Pinaroli, Giovanni Bolotnikov, Aleksey Carini, Gabriella A. Deptuch, Grzegorz W. Gorni, Dominik S. Herrmann, Sven Pinelli, Donald Pinz, Joseph Verderosa, Antonio Instrumentation and Detectors We present a Virtual Frisch-Grid geometry-based CZT gamma detector developed for identifying different radioisotopes over an energy range from single keV up to 2 MeV, and useful for efficient characterization of CZT crystals. The detector is built with a 3 x 3 matrix of CZT crystals, each measuring approximately 6 mm x 6 mm x 15 mm. The charge generated within the sensor's active volume is read out via an anode connected directly to the AVG3_Dev integrated circuit. A current signal induced by charge drift is collected on side pads of the crystals, enabling reconstruction of a 3D interaction position. This paper discusses the design, development, and performance of the standalone, mobile detector system, which integrates the AVG3_Dev readout IC developed at Brookhaven National Laboratory, high-speed FPGA-based with per-channel digital signal processing, and embedded system capabilities. The device is compact, battery-powered, and supports wireless data streaming, making it suitable for field operations towards radioisotope identification. |
| title | A Virtual Frisch-Grid Geometry-Based CZT Gamma Detector for In-Field Radioisotope Identification |
| topic | Instrumentation and Detectors |
| url | https://arxiv.org/abs/2507.15177 |