64-element photodiode array for scintillation detection of x-rays

Maciej Węgrzecki; Dariusz Wolski; Jan Bar; Tadeusz Budzyński; Arkadiusz Chłopik; Piotr Grabiec; Helena Kłos; Andrzej Panas; Tadeusz Piotrowski; Wojciech Słysz; Maciej Stolarski; Dariusz Szmigiel; Iwona Węgrzecka; Michał Zaborowski

doi:10.1117/12.2069837

19 August 2014 64-element photodiode array for scintillation detection of x-rays

Maciej Węgrzecki, Dariusz Wolski, Jan Bar, Tadeusz Budzyński, Arkadiusz Chłopik, Piotr Grabiec, Helena Kłos, Andrzej Panas, Tadeusz Piotrowski, Wojciech Słysz, Maciej Stolarski, Dariusz Szmigiel, Iwona Węgrzecka, Michał Zaborowski

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Proceedings Volume 9291, 13th International Scientific Conference on Optical Sensors and Electronic Sensors; 929104 (2014) https://doi.org/10.1117/12.2069837
Event: 13th International Scientific Conference on Optical Sensors and Electronic Sensors, 2014, Lodz, Poland

Abstract

The paper presents the design, technology and parameters of a new, silicon 64-element linear photodiode array developed at the Institute of Electron Technology (ITE) for the detection of scintillations emitted by CsI scintillators (λ≈550 nm). The arrays are used in a device for examining the content of containers at border crossings under development at the National Centre for Nuclear Research. Two arrays connected with a scintillator block (128 CsI scintillators) form a 128-channel detection module. The array consists of 64 epiplanar photodiode structures (5.1 × 7.2 mm) and a 5.3 mm module. p+-ν-n+ photodiode structures are optimised for the detection of radiation of λ≈ 550 nm wavelength with no voltage applied (photovoltaic mode). The structures are mounted on an epoxy-glass laminate substrate, copper-clad on both sides, on which connections with a common anode and separate cathode leads are located. The photosensitive surface of photodiodes is covered with a special silicone gel, which protects photodiodes against the mechanical impact of scintillators

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Maciej Węgrzecki, Dariusz Wolski, Jan Bar, Tadeusz Budzyński, Arkadiusz Chłopik, Piotr Grabiec, Helena Kłos, Andrzej Panas, Tadeusz Piotrowski, Wojciech Słysz, Maciej Stolarski, Dariusz Szmigiel, Iwona Węgrzecka, and Michał Zaborowski "64-element photodiode array for scintillation detection of x-rays", Proc. SPIE 9291, 13th International Scientific Conference on Optical Sensors and Electronic Sensors, 929104 (19 August 2014); https://doi.org/10.1117/12.2069837

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