Measuring issues in the GEM detector system for fusion plasma imaging
Tomasz Czarski , M. Chernyshova , K. Malinowski (Instytut Fizyki Plazmy i Laserowej Mikrosyntezy) , Krzysztof Poźniak , Grzegorz Henryk Kasprowicz , Piotr Kolasiński , Rafał Krawczyk , Andrzej Wojeński , Paweł Linczuk , Wojciech Zabołotny , Axel Jardin , Dider Mazon , K. Jakubowska , G. Boutoux , F. Burgy , S. Hulin , D. Batani
AbstractA measurement systems based on GEM (Gas Electron Multiplier) detectors is developed for X-ray diagnostics of tokamak plasmas. The multi-channel setup is designed for evaluation the X-ray source distribution in energy, space and time. The paper deals with the development of a fast analysis and elaboration of collected data, including charge cluster identification and the separation of coincided signals. The proposed algorithm can be applied iteratively for series of superimposed pulses. On-line separation of overlapped signals was implemented applying the FPGA (FPGA— Field-Programmable Gate Array) technology with relatively simple firmware processing. We demonstrate reconstruction of coinciding signals and retrieval of radiation source properties and energy spectra.
|Journal series||Journal of Instrumentation, ISSN 1748-0221, (A 35 pkt)|
|Pages||C08001-1 - C08001-12|
|Publication size in sheets||0.3|
|Keywords in English||Data acquisition concepts; Digital signal processing (DSP); Micropattern gaseous detectors (MSGC, GEM, THGEM, RETHGEM, MHSP, MICROPIC, MICROMEGAS, InGrid, etc)|
|Score||= 35.0, 05-12-2019, ArticleFromJournal|
|Publication indicators||= 1; = 1; : 2018 = 0.934; : 2018 = 1.366 (2) - 2018=1.314 (5)|
|Citation count*||3 (2019-12-06)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.