6 October 2011 Optimization of FPGA processing of GEM detector signal
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Proceedings Volume 8008, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2011; 80080F (2011) https://doi.org/10.1117/12.905427
Event: Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2011, 2011, Wilga, Poland
Abstract
This paper presents analysis of processing method of the signal from Gas Electron Multiplier (GEM) detector acquired in our Field-Programmable Gate Array (FPGA) based readout system. We have found that simple processing of GEM signal received from the charge amplifier, sampled at 100MHz with 10-bit resolution, after low-pass filtering with 15 MHz cut-off frequency, provides accuracy similar to obtained by processing of the raw GEM signal sampled at 2.5 GHz frequency with 8-bit resolution. Even when 3 bits are lost due to long term instability of the detector and analog part of the system - resulting in 7-bit effective resolution, the reasonable accuracy is still preserved. Additionally we have analyzed computational power required to perform the real-time analysis of the GEM signal, taking into consideration resources offered by the FPGA chip used in the prototype platform.
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Wojciech M. Zabołotny, Tomasz Czarski, Maryna Chernyshova, Henryk Czyrkowski, Ryszard Dąbrowski, Wojciech Dominik, Katarzyna Jakubowska, Lesław Karpiński, Grzegorz Kasprowicz, Krzysztof Kierzkowski, Ignacy M. Kudła, Krzysztof Poźniak, Jacek Rzadkiewicz, Zbigniew Sałapa, Marek Scholz, "Optimization of FPGA processing of GEM detector signal", Proc. SPIE 8008, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2011, 80080F (6 October 2011); doi: 10.1117/12.905427; https://doi.org/10.1117/12.905427
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