A new tangential gamma-ray spectrometer has been developed for fast ion measurements in deuterium and deuterium-tritium plasmas of the Joint European Torus (JET). The instrument is based on a LaBr3 crystal with a photo-multiplier tube and replaces a pre-existing bismuth germanate detector, providing enhanced energy resolution and a counting rate capability in the MHz range. The line of sight is equipped with a LiH attenuator, which reduces the background due to 14 MeV neutron interactions with the crystal by more than two orders of magnitude and enables the observation of gamma-ray emission from confined ? particles in JET deuterium-tritium plasmas. Thanks to its tangential line of sight, the detector can distinguish co- and counter-passing ions. The performance of the instrument is demonstrated through the results of recent JET fast ion experiments in deuterium plasmas.
A new tangential gamma-ray spectrometer for fast ion measurements in deuterium and deuterium-tritium plasmas of the Joint European Torus
Nocente M.; Craciunescu T.; Gorini G.; Kiptily V.; Tardocchi M.; Braic V.; Curuia M.; Dal Molin A.; Figueiredo J.; Giacomelli L.; Iliasova M.; Kazakov Y.; Khilkevitch E.; Marcer G.; Panontin E.; Rigamonti D.; Salewski M.; Shevelev A.; Soare S.; Zoita V.; Zychor I.
ID | 454023 |
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DOI | 10.1063/5.0043806 |
PRODUCT TYPE | Journal Article |
LAST UPDATE | 2022-04-11T18:11:22Z |
EU PROJECT | EUROfusion |
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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 |