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First measurement of neutrons produced by deuterium fusion reactions in SPIDER

McCormack O.; Muraro A.; Rigamonti D.; Perelli Cippo E.; Croci G.; Grosso G.; Gorini G.; Mario I.; Giacomelli L.; Cordaro L.; Tardocchi M.; Rebai M.; Zuin M.; Pasqualotto R.

Conference: International Conference on Diagnostics For Fusion Reactors - ICFRD 2020, , Varenna, LC, Italy , 6-10 September 2021 Year: 2021
ISTP Authors:
Davide Rigamonti
Giovanni Grosso
Matteo Zuin
Enrico Perelli Cippo
Marica Rebai
Andrea Muraro
Marco Tardocchi
Roberto Pasqualotto

Keywords: , ,
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The inaugural Deuterium acceleration campaign in the SPIDER negative ion source facility in Padua has recently taken place. The first neutrons generated by Deuterium-Deuterium fusion reactions (2.5 MeV) have been recorded, occurring from the collision of accelerated Deuterium with Deuterium absorbed by the beam dump of SPIDER. A neutron detector based on a novel EJ276 plastic scintillator has been employed to successfully measure the neutron flux, which shows strong agreement with the extracted current of the acceleration grid. We have performed a neutron-gamma pulse shape discrimination characterization of the EJ276 detector at the ISIS Neutron source (241AmBe up to 10 MeV), as well as direct spectroscopic comparisons of the D-D neutrons with data from the Frascati Neutron Generator (241AmB quasi-monoenergetic 2.5 MeV). Despite the low statistics produced in this first campaign, both pulse shape discrimination and spectral analysis of the fusion neutrons was viable. The success of these first measurements has led to the installation of an array of 6 new scintillators to be used for further physical studies in future campaigns.

ID 456351
PRODUCT TYPE Proceeding Paper
LAST UPDATE 2022-11-18T11:48:40Z