Role of neutron attenuators for gamma-ray measurements in deuterium–tritium magnetic confinement plasmas-Reference-Cited by-同舟云学术

Role of neutron attenuators for gamma-ray measurements in deuterium–tritium magnetic confinement plasmas

Published:2022-09-01 Issue:9 Volume:93 Page:093515
ISSN:0034-6748
Container-title:Review of Scientific Instruments
language:en
Short-container-title:Review of Scientific Instruments

Author:

Rigamonti D.¹^ORCID,Dal Molin A.¹,Gorini G.¹²^ORCID,Marcer G.²^ORCID,Nocente M.¹²,Rebai M.¹,Craciunescu T.³,Ghani Z.⁴,Kiptily V.⁴^ORCID,Maslov M.⁴,Shevelev A.⁵^ORCID,Zohar A.⁶,Tardocchi M.¹^ORCID,

Affiliation:

1. Institute for Plasma Science and Technology, National Research Council of Italy, Milan, Italy

2. Department of Physics, University of Milano-Bicocca, Milan, Italy

3. Institute of Atomic Physics, Magurele-Bucharest, Romania

4. Culham Centre for Fusion Energy, Abingdon, United Kingdom

5. Ioffe Institute, St. Petersburg, Russian Federation

6. Reactor Physics Department, Jožef Stefan Institute, Ljubljana, Slovenia

Abstract

The Joint European Torus (JET) is the only tokamak in the world able to operate in Deuterium–Tritium (DT) plasmas. A successful DT experimental campaign, the DTE2, has recently been carried out, providing unique opportunities for studying both physics and technological aspects. In particular, it allowed us to investigate and benchmark the solutions adopted to attenuate the significant 14 MeV neutron flux, needed to enable high-resolution gamma-ray spectroscopy measurements on a tokamak. While in inertial confinement experiments, gamma-rays and neutrons are discriminated through time-of-flight techniques; in magnetic confinement experiments, the neutron attenuators are a key element to allow gamma-ray measurements in order to reestablish the 1 × 105 to 1 background to signal ratio. In this paper, the role of the reference neutron attenuators at JET, based on LiH, has been analyzed and described.

Funder

EUROfusion

Publisher

AIP Publishing

Subject

Instrumentation

Link

https://aip.scitation.org/doi/pdf/10.1063/5.0101783

Reference18 articles.

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5. A new tangential gamma-ray spectrometer for fast ion measurements in deuterium and deuterium–tritium plasmas of the Joint European Torus