29th Symposium on Fusion Technology (SOFT 2016)

P4.061 JUVIL: A New Innovative Software Framework for Data Analysis of JET Imaging Systems

8 Sep 2016, 14:20

1h 40m

Foyer 2A (2nd floor), 3A (3rd floor) (Prague Congress Centre)

Board: 61

Poster D. Diagnostics, Data Acquisition and Remote Participation P4 Poster session

Speaker

Valentina Huber (Forschungszentrum Jülich GmbH)

Description

Imaging systems are an indispensable technique for successful plasma operation of fusion devices. At the JET tokamak, numerous cameras in the VIS/NIR/MWIR spectral ranges are used for plasma physics studies as well as for the real time overheating protection of the first wall and for live plasma monitoring during operation. The protection system, on the basis of the NIR imaging cameras, is routinely used on JET for monitoring the surface temperature. A new powerful software framework JUVIL (JET Users Video Imaging Library) has been developed and successfully installed at JET for fast data visualization and advance analysis of all types of imaging data.The JUVIL framework is based on modular object-oriented components implemented in Python to simplify work with JET scientific data. It provides standard interfaces to access video data and post-processing, which are highly configurable and can be easily extended and adapted for new data formats and imaging cameras. One of the GUI components is the video player, widely used during the last JET campaign. It displays the video data for VIS/NIR/MWIR cameras and automatically carries out the post-processing (image rotation, data format conversion, scaling of non-interlaced fields to full frames).In addition, JUVIL loads the video background, calibration file, performs dead pixels and flat field corrections and provides general information such as frame geometry, camera filters, and exposure time. The software is able to plot maximum temperatures of ROIs (Region of Interest) from the Real-Time Processing System and to calculate maximum/average temperatures for the user’s own ROIs. There is an interface to retrieve VTM (Vessel Thermal Map) events, wall segments maximum temperatures and thresholds for each plasma pulse and to load the corresponding video image if a hot spot alarm is detected. Finally, the JUVIL hotspots editor is able to store the hotspots parameters and analyse their evolution.