Soft X-ray diagnostic system upgrades and data quality monitoring features for tokamak usage

Andrzej Wojeński, Pawel Linczuk, Piotr Kolasinski, Maryna Chernyshova, Didier Mazon, Grzegorz Kasprowicz, Krzysztof T. Pozniak, Michal Gaska, Tomasz Czarski, Rafal Krawczyk

Abstract


The validation of the measurements quality after on-site diagnostic system installation is necessary in order to provide reliable data and output results. This topic is often neglected or not discussed in detail regarding measurement systems. In the paper recently installed system for soft X-ray measurements is described in introduction. The system is based on multichannel GEM detector and the data is collected and sent in special format to PC unit for further postprocessing. The unique feature of the system is the ability to compute final data based on raw data only. The raw data is selected upon algorithms by FPGA units. The FPGAs are connected to the analog front-end of the system and able to register all of the signals and collect the useful data. The interface used for data streaming is PCIe Gen2 x4 for each FPGA, therefore high throughput of the system is ensured. The paper then discusses the properties of the installation environment of the system and basic functionality mode. New features are described, both in theoretical and practical approach. New modes correspond to the data quality monitoring features implemented for the system, that provide extra information to the postprocessing stage and final algorithms. In the article is described also additional mode to perform hardware simulation of signals in a tokamak-like environment using FPGAs. The summary describes the implemented features of the data quality monitoring features and additional modes of the system.

Full Text:

PDF

References


M. Chernyshova et al., “First exploitation results of recently developed SXR GEM-based diagnostics at the WEST project,” Nuclear Materials and Energy, vol. 25, p. 100850, Dec. 2020, DOI: 10.1016/j.nme.2020.100850.

A. Wojenski et al., “Multichannel GEM-based soft X-ray FPGA measurement system for WEST tokamak: hardware, installation and first plasma acquisition,” Review of Scientific Instruments, vol. under revi, no. HTPD2020 Conference, 2020.

T. Czarski et al., “Algorithms development for the GEM-based detection system,” in Proceedings of SPIE - The International Society for Optical Engineering, vol. 10031, 2016, DOI: 10.1117/12.2249573.

P. Linczuk et al., “Performance evaluation of developed GEM-based X-Ray diagnostic system,” Acta Physica Polonica B, Proceedings Supplement.

A. Wojenski, K. T. Pozniak, D. Mazon, and M. Chernyshova, “FPGA-based firmware model for extended measurement systems with data quality monitoring,” in Proceedings of SPIE - The International Society for Optical Engineering, vol. 10445, 2017, DOI: 10.1117/12.2281052.

A. Wojenski, K. T. Pozniak, D. Mazon, and M. Chernyshova, “FPGA-based novel real-time evaluation and data quality monitoring system for tokamak high-performance GEM soft X-ray diagnostic,” Journal of Instrumentation, vol. 13, no. 12, 2018, DOI: 10.1088/1748-0221/13/12/P12024.

A. Wojenski et al., “Data Quality Monitoring Considerations for Implementation in High Performance Raw Signal Processing Real-time Systems with Use in Tokamak Facilities,” Journal of Fusion Energy, vol. 39, no. 5, pp. 221–229, Oct. 2020, DOI: 10.1007/s10894-020-00243-8.

P. Kolasinski et al., “Zero-Suppression Trigger Mode for GEM detector measurement system,” International Journal of Electronics and Telecommunications, vol. under rev, 2020.

P. Kolasinski et al., “Modeling of serial data acquisition structure for GEM detector system in Matlab,” in Proceedings of SPIE - The International Society for Optical Engineering, vol. 10031, 2016, DOI: 10.1117/12.2249057.

P. Linczuk et al., “Measurement capabilities upgrade of GEM soft X-ray measurement system for hot plasma diagnostics,” International Journal of Electronics and Telecommunications, vol. under rev, 2020.

G. Kasprowicz et al., “Multichannel Data Acquisition System for GEM Detectors,” Journal of Fusion Energy, vol. 38, no. 3–4, 2019, DOI: 10.1007/s10894-018-0167-0.

A. Wojenski et al., “Multichannel measurement system for extended SXR plasma diagnostics based on novel radiation-hard electronics,” Fusion Engineering and Design, 2016, DOI: 10.1016/j.fusengdes.2017.04.134.

A. E. Shumack et al., “X-ray crystal spectrometer upgrade for ITER-like wall experiments at JET,” Review of Scientific Instruments, vol. 85, no. 11, 2014, DOI: 10.1063/1.4891182.

G. Kasprowicz et al., “Fast ADC based multichannel acquisition system for the GEM detector,” Proceedings of SPIE - The International Society for Optical Engineering, vol. 8454, 2012, DOI: 10.1117/12.2000211.


Refbacks

  • There are currently no refbacks.


International Journal of Electronics and Telecommunications
is a periodical of Electronics and Telecommunications Committee
of Polish Academy of Sciences

eISSN: 2300-1933