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First spatially resolved measurements of the D-3He alpha-particle source with the upgraded JET gamma-ray camera
Panontin E.; Rigamonti D.; Nocente M.; Dal Molin A.; Broslawski A.; Craciunescu T.; Croci G.; Cruz N.; Figueiredo J.; Giacomelli L.; Gorini G.; Gosk M.; Kaveney G.; Kazakov Y.O.; Kiptily V.; Korolczuk S.; Marcer G.; Murari A.; Perelli Cippo E.; Salewski M.; Urban A.; Zychor I.; Tardocchi M.
The Joint European Torus (JET) gamma-ray camera has been recently upgraded with the installation of new gamma-ray detectors, based on LaBr3(Ce) scintillation crystals, which add spectroscopic capability to the existing system allowing measurements with good energy resolution (5% at 0.622 MeV), a dynamic range from hundreds of keV up to about 30 MeV, and high counting rate capabilities of MCps. First gamma-ray measurements during the C38 campaign of the JET have been successfully carried out, in particular, in D-3He plasmas from three-ion ion cyclotron resonance heating experiments, where the detection of 16.4 MeV y-rays from D + 3He -> y + 5Li reactions with the gamma-ray camera upgrade allowed determining the spatial profile of alpha particles born in D + 3He fusion reactions.
