Radiation Damage Tests on Diamond and Scintillation Detector Components for the ITER Radial Neutron Camera

Baccaro, S.; Cemmi, Alessia; Sarcina, Ilaria Di; Esposito, B.; Ferrara, Giuseppe; Grossi, A.; Montecchi, M.; Podda, S.; Pompili, F.; Quintieri, L.; Riva, M.

doi:10.1109/tns.2018.2807841

Cited by 14 publications

(12 citation statements)

References 9 publications

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“…• The radiation hardness properties of diamond detector assemblies should be investigated further. Recent results have indicated issues, possibly related to the contacting of the detectors [35].…”

Section: Example 1: Semiconductor Detectors; Diamonds (C)mentioning

confidence: 99%

“…However, the 3-body final state, involving a neutron, does not make this reaction channel suitable for spectroscopy. • 35 Cl(n,p) 35 S with a Q = 0.61 MeV. This charged-only reaction channel has a potential for neutron spectroscopy that could be explored.…”

Section: Example 1: Semiconductor Detectors; Diamonds (C)mentioning

confidence: 99%

“…(left) Separation of events (reaction channels) through pulse shape discrimination (PSD). The neutron-induced reactions on35 Cl and 6 Li are indicated. (right) Projection on the pulse height axis of the neutron-induced events in the red rectangles.…”

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confidence: 99%

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Advanced Neutron Spectroscopy in Fusion Research

Ericsson

2019

J Fusion Energ

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This paper presents a review of the current state-of-the-art neutron spectroscopy in fusion research. The focus is on the fundamental nuclear physics and measurement principles. A brief introduction to relevant nuclear physics concepts is given and also a summary of the basic properties of neutron emission from a fusion plasma. Compact monitors/spectrometers like diamond, CLYC and the liquid scintillator are discussed. A longer section describes in some detail the more advanced, designed systems like those based on the thin-foil proton recoil and time-of-flight techniques. Examples of spectroscopy systems installed at JET and planned for ITER are given.

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Section: Example 1: Semiconductor Detectors; Diamonds (C)mentioning

confidence: 99%

Section: Example 1: Semiconductor Detectors; Diamonds (C)mentioning

confidence: 99%

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Advanced Neutron Spectroscopy in Fusion Research

Ericsson

2019

J Fusion Energ

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“…The experiments were carried out on three identical commercial sCD diamond detectors (size: 4.5 mm 4.5 mm, thickness: 500 lm, Ti-carbide/Ag contact) at the CALLIOPE facility (ENEA-Casaccia) with a 60 Co source in an air and room temperature testing environment with two dose rates (1.4 kGy/h and 0.3 kGy/h). Negligible effects were experienced in the sCD count rates [22,24] up to 3 MGy, while deterioration was found for higher doses.…”

Section: Resistance Of Scd Matrix and 238 U Fission Chamber To Enviro...mentioning

confidence: 91%

Progress of Design and Development for the ITER Radial Neutron Camera

et al. 2022

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The paper presents an overview of the design status of the Radial Neutron Camera (RNC), that, together with the Vertical Neutron Camera, will provide, through reconstruction techniques applied to the measured line-integrated neutron fluxes, the time resolved measurement of the ITER neutron and α-source profile (i.e. neutron emissivity, neutrons emitted per unit time and volume). The RNC is composed of two subsystems, the In-Port RNC and Ex-Port RNC located, respectively, inside and outside the Plug of Equatorial Port #01. The In-Port subsystem is in a more advanced design stage since it has recently undergone the Final Design Review in the ITER procurement process. The paper describes the diagnostic layout, the interfaces, the measurement capabilities and the main challenges in its realization. Prototyping and testing of neutron detectors and electronics components were carried out and led to the choice of the component solutions that can match the environmental and operational constraints in terms radiation hardness, high temperature and electromagnetic compatibility. The performance of the RNC in terms of neutron emissivity measurement capability was assessed through 1D and 2D reconstruction analysis. It is proven that the neutron emissivity can be reconstructed in real-time within the measurement requirements: 10% accuracy, 10 ms time resolution and a/10 (a = plasma minor radius) space resolution.

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“…GEM detectors are limited to operate below 50 • C and have no spectroscopic capabilities. At this stage, 238 U FCs and DDs are the best option although the radiation hardness of the latter has not yet been fully confirmed [12]. Of possible interest are detectors based on depleted 238 UO 2 thanks to their capabilities of operating at high temperatures (> 2600 K) and greater radiation and electromagnetic noise resistance [13].…”

Section: Neutron Detectorsmentioning

confidence: 99%

Pre-conceptual study of the European DEMO neutron diagnostics

et al. 2019

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A: This paper discusses the pre-conceptual design of the European DEMO neutron diagnostics aimed at the measurement of the fusion power, the plasma displacement and the fuel ion ratio for plasma burn control. The design has been based on the European DEMO design concept with a single divertor and on the so-called DEMO1 plasma scenario but limited only to the steady phased of the discharge. The suggested neutron diagnostics consist of neutron activation systems, fission chambers and vertical and horizontal collimated neutron flux monitors with spectroscopy capabilities. The fusion power can be measured with an accuracy of 1 % with a time resolution of one tenth of the energy confinement time and the plasma displacement with a time resolution of 1 ms. Central ion temperature and fuel ion ratio instead can be measured with a time resolution of about 1 s. Calibration and interfacing issues are discussed. K: Neutron detectors, Fast neutrons, Nuclear instruments and methods for hot plasma diagnostics.

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Radiation Damage Tests on Diamond and Scintillation Detector Components for the ITER Radial Neutron Camera

Cited by 14 publications

References 9 publications

Advanced Neutron Spectroscopy in Fusion Research

Advanced Neutron Spectroscopy in Fusion Research

Progress of Design and Development for the ITER Radial Neutron Camera

Pre-conceptual study of the European DEMO neutron diagnostics

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