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.
Journal:
Review of scientific instruments 92 (4),
pp. 043537-1 - 043537-5
Year:
2021
ISTP Authors: Giuseppe Gorini
Marco Tardocchi
Keywords: Photomultipliers, tritium, Deuterium, Neutron interactions, Alpha particles, tokamaks, Scintillators, gamma-ray spectroscopy
Research Activitie: JOURNAL ARTICLES
Related products
-
Nuclear fusion 61 (7), pp. 076013-1 - 076013-15 Year: 2021 DOI: 10.1088/1741-4326/abfcdf
Prediction of temperature barriers in weakly collisional plasmas by a Lagrangian coherent structures computational tool
Di Giannatale G.; Bonfiglio D.; Cappello S.; Chacon L.; Veranda M.
-
PCCP. Physical chemistry chemical physics (Print) 23 (29), pp. 15475 - 15479 Year: 2021 DOI: 10.1039/d1cp01976g
Reconciling experimental and theoretical vibrational deactivation in low-energy O + N2 collisions
Hong, Q., Bartolomei, M., Esposito, F., Sun, Q., Pirani, F.
-
The astrophysical journal. Letters (Online) 919 (2), pp. L30-1 - L30-8 Year: 2021 DOI: 10.3847/2041-8213/ac26c5
Turbulent Cascade and Energy Transfer Rate in a Solar Coronal Mass Ejection
Sorriso-Valvo, Luca; Yordanova, Emiliya; Dimmock, Andrew P.; Telloni, Daniele
English
Italiano