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Integration of a secondary line for non-scattering plasma signals and gyrotron’s spectrum monitoring

Bin, W.; Bruschi, A.; D’Arcangelo, O.; Fanale, F.; Baiocchi, B.; Gittini, G.; Pallotta, F.; Garavaglia, S.; Granucci, G.; Grosso, G.; Moro, A.; Orsitto, F.; Tartari, U.

During the last years the Collective Thomson Scattering (CTS) system installed on the Frascati Tokamak Upgrade (FTU), operating at 140 GHz, has been exploited to investigate different kinds of phenomena: high-frequency daughter waves by Parametric Decay Instabilities, which, under certain conditions, are recently presumed to be conceivable even under routine ECRH scenarios, and bulk ions thermal emissions stimulated by a 140 GHz gyrotron beam. A new receiving line, giving rise to a second further line of sight from the plasma during the scattering experiments and integrated in the CTS antenna, has been recently completed and installed. Such new line will be useful to recognise signals originating in the volume of beams cross from the ones coupled outside or also to monitor the gyrotron’s spectrum in real-time during the shot. The present status of this new installation is shown in the paper.

ID 400956
DOI 10.1088/1748-0221/14/03/C03003
PRODUCT TYPE Journal Article
LAST UPDATE 2023-02-06T16:40:30Z
EU PROJECT EUROfusion
TITLE Implementation of activities described in the Roadmap to Fusion during Horizon 2020 through a Joint programme of the members of the EUROfusion consortium
FOUNDING PROGRAM H2020
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