Implementation of rapid imaging system on the COMPASS tokamak.

0482531 - ÚFP 2018 RIV CH eng J - Journal Article
Havránek, Aleš - Weinzettl, Vladimír - Fridrich, David - Cavalier, Jordan - Urban, Jakub - Komm, Michael
Implementation of rapid imaging system on the COMPASS tokamak.
Fusion Engineering and Design. Roč. 123, November (2017), s. 857-860. ISSN 0920-3796. E-ISSN 1873-7196.
[SOFT 2016: Symposium on Fusion Technology /29./. Prague, 05.09.2016-09.09.2016]
R&D Projects: GA MŠMT(CZ) LM2015045
Institutional support: RVO:61389021
Keywords : Camera * Data acquisition * Video processing * Tokamak
OECD category: Nuclear related engineering
Impact factor: 1.437, year: 2017
http://www.sciencedirect.com/science/article/pii/S092037961730354X

The COMPASS tokamak has been recently equipped with two new fast (max. 800 kfps) color cameras Photron FASTCAM Mini UX100 operating in the visible spectral range. A new data acquisition system called RIS (Rapid Imaging System), including both node’s software and hardware, was developed for these cameras to ensure automatic and reliable operation and its integration to the control and data acquisition system of COMPASS. The node provides camera function control, parameter setting, data transfer from the camera to the node computer, demosaicing, encoding of a preview video, and data saving to the COMPASS database. Raw data that keep full information are saved to HDF5 files (up to 10 GB per shot). Moreover the node encodes color video (less than 60 MB per shot) that is displayed on the COMPASS control room panel, logbook, and the COMPASS database. The video processing toolchain also allows to play HDF5 files with raw data in almost every media player on simple single double click. All data are available in 2 minutes after shot.
Permanent Link: http://hdl.handle.net/11104/0277960