Articolo in rivista, 2022, ENG, 10.1088/1748-0221/17/02/C02015

First measurement of neutrons produced by deuterium fusion reactions in SPIDER

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

University of Milano-Bicocca, Italy; Consorzio RFX (CNR, ENEA, INFN, Università di Padova, Acciaierie Venete SpA), Padova, Italy; CNR ISTP - Istituto per la Scienza e Tecnologia dei Plasmi, Sedi di Milano e Padova, Italy; Sez. INFN Milano-Bicocca, Italy.

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 beam-target fusion reactions (2.45 MeV) have been recorded, occurring from the collision of accelerated deuterium with deuterium absorbed by the calorimeter 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 neutron-gamma pulse shape discrimination with the EJ276 device at SPIDER combined with 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.

Journal of instrumentation 17 (2), pp. C02015-1–C02015-5

Keywords

Instrumentation for neutron sources, Scintillators scintillation and light emission processes (solid gas and liquid scintillators)

CNR authors

Rigamonti Davide, Grosso Giovanni Maria, Croci Gabriele, Gorini Giuseppe, Zuin Matteo, Perelli Cippo Enrico, Rebai Marica, Muraro Andrea, Tardocchi Marco, Pasqualotto Roberto

CNR institutes

ISTP – Istituto per la Scienza e Tecnologia dei Plasmi

ID: 465391

Year: 2022

Type: Articolo in rivista

Creation: 2022-03-21 15:49:22.000

Last update: 2022-11-18 10:59:48.000

External IDs

CNR OAI-PMH: oai:it.cnr:prodotti:465391

DOI: 10.1088/1748-0221/17/02/C02015

Scopus: 2-s2.0-85125747030

ISI Web of Science (WOS): 000791423900003