EFD-C(13)03/25 Calibration of an Infrared Camera on JET
| Main Authors: | S. Devaux, G. Arnoux, I. Balboa, A.L. Campergue, Ph. Jacquet, F. Marcotte, Y. Corre, J-L. Gardarein, B. Sieglin, JET EFDA contributors |
|---|---|
| Format: | Proceeding Journal |
| Terbitan: |
, 2013
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| Online Access: |
https://zenodo.org/record/12109 |
Daftar Isi:
- Installation of the JET ITER-Like Wall (ILW)has brought on the need of a reliable protection system as too high a temperature of the plasma facing components (PFCs) can result in beryllium (Be) melting or thermal fatigue of tungsten (W). A proper temperature measurement relies on the knowledge of three different parameters of equal importance: the sensitivity of the camera sensor, the transmission factor of the optics used and the emissivity of the monitored PFCs. In this paper we first present the calibration process of a wide angle infrared (IR) camera, which has involved the capabilities of the remote handling for introducing a calibrated hot source into the JET vacuum vessel. Then, we describe how the PFCs equipped with embedded thermocouples have been used to assess the emissivity of both Be and W.
- Preprint of Paper to be submitted for publication in Proceedings of the 40th EPS Conference on Plasma Physics, Espoo, Finland 1st July 2013 - 5th July 2013