First neutron spectroscopy measurements with a pixelated diamond detector at JET

A. Muraro, L. Giacomelli, M. Nocente, M. Rebai, D. Rigamonti, F. Belli, P. Calvani, J. Figueiredo, M. Girolami, G. Gorini, G. Grosso, A. Murari, S. Popovichev, D.M. Trucchi, M. Tardocchi, Jet Contributors

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Abstract

A prototype Single crystal Diamond Detector (SDD) was installed at the Joint European Torus (JET) in 2013 along an oblique line of sight and demonstrated the possibility to carry out neutron spectroscopy measurements with good energy resolution and detector stability in discharges heated by neutral beam injection and radio-frequency waves. Starting from these positive results, within the Vertical Neutron Spectrometer project of the Joint European Torus, we have developed a pixelated instrument consisting of a matrix of 12 independent SDDs, called the Diamond Vertical Neutron Spectrometer (DVNS), which boosts the detection efficiency of a single SDD by an order of magnitude. In this paper we describe the main features of the DVNS, including the detector design, energy resolution, and data acquisition system for on-line processing. Preliminary spectroscopy measurements of 2.5 MeV neutrons from the present deuterium plasma at JET are finally presented.
Original languageEnglish
Article number11D833
Pages (from-to)-
JournalReview of Scientific Instruments
Volume87
Issue number11
DOIs
Publication statusPublished - 1 Nov 2016
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Instrumentation

Cite this

Muraro, A., Giacomelli, L., Nocente, M., Rebai, M., Rigamonti, D., Belli, F., Calvani, P., Figueiredo, J., Girolami, M., Gorini, G., Grosso, G., Murari, A., Popovichev, S., Trucchi, D. M., Tardocchi, M., & Contributors, J. (2016). First neutron spectroscopy measurements with a pixelated diamond detector at JET. Review of Scientific Instruments, 87(11), -. [11D833]. https://doi.org/10.1063/1.4961557