Time dependent 14MeV neutrons measurement using a polycrystalline chemical vapor deposited diamond detector at the JET tokamak

Angelone, M.; Pillon, M.; Bertalot, L.; Orsitto, F.; Marinelli, M.; Pucella, G.; Tucciarone, A.; Verona-Rinati, G.; Popovichev, S.; Murari, A.

doi:10.1063/1.1834691

Cited by 33 publications

(14 citation statements)

References 18 publications

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“…Above 6 MeV, neutron spectroscopy is enabled by the 12 C(n,α) 9 Be reaction (energy threshold: 6.17 MeV) between the incoming neutrons and carbon nuclei of the diamond crystal. The α particle energy is deposited in the device and results in a peak, whose mean position and shape depend on the incoming neutron energies.…”

Section: Introductionmentioning

confidence: 99%

Single crystal diamond detector measurements of deuterium-deuterium and deuterium-tritium neutrons in Joint European Torus fusion plasmas

Cazzaniga¹,

Sundén²,

Binda³

et al. 2014

Review of Scientific Instruments

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First simultaneous measurements of deuterium-deuterium (DD) and deuterium-tritium neutrons from deuterium plasmas using a Single crystal Diamond Detector are presented in this paper. The measurements were performed at JET with a dedicated electronic chain that combined high count rate capabilities and high energy resolution. The deposited energy spectrum from DD neutrons was successfully reproduced by means of Monte Carlo calculations of the detector response function and simulations of neutron emission from the plasma, including background contributions. The reported results are of relevance for the development of compact neutron detectors with spectroscopy capabilities for installation in camera systems of present and future high power fusion experiments.

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Section: Introductionmentioning

confidence: 99%

Single crystal diamond detector measurements of deuterium-deuterium and deuterium-tritium neutrons in Joint European Torus fusion plasmas

Cazzaniga¹,

Sundén²,

Binda³

et al. 2014

Review of Scientific Instruments

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“…Due to the small size and high cost of natural diamonds, a chemical vapor deposited polycrystalline diamond films have been also tested at JET [8]. Both options have recently proved to cope well with the tokamak environment and operate reliably over long periods.…”

Section: Neutron Rate Measurements At Jetmentioning

confidence: 97%

Progress in neutron diagnostics at JET

Mlynář

Bonheure²,

Murari

et al. 2006

Czech J Phys

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In the ITER tokamak, diagnosing the plasma neutron emission will be essential to characterise fusion burning process and determine the performance of the machine. JET, currently the world largest tokamak, is the most suitable test bed for development of the fusion-relevant neutron diagnostics due to its plasma parameters and unique tritium operation capability. Current works aim at improving the spatial and spectral characteristics of the neutron measurements at JET, as well as on technological tasks. The present enhancements of neutron diagnostics and data analyses at JET make -together with new fast particle measuring techniques and tritium retention studies -part of the "burning plasma" diagnostic developments towards reactor-grade fusion facilities.PACS : 52.55.Fa

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“…Besides compact neutron spectrometers NDD [51], CVD diamond [52], NE-2I3 [53] and threshold ^^**U fission chamber [54] flux monitors also will be used in RNC and VNC.…”

Section: Neutron and Y-ray Diagnostics On Itermentioning

confidence: 99%

Neutron and Gamma-ray Measurements

Krasilnikov

Sasao

Kiptily³

et al. 2008

AIP Conference Proceedings

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Due to high neutron and gamma-ray yields and large size plasmas many future fusion reactor plasma parameters such as fusion power, fusion power density, ion temperature, fuel mixture, fast ion energy and spatial distributions can be well measured by various fusion product diagnostics. Neutron diagnostics provide information on fusion reaction rate, which indicates how close is the plasma to the ultimate goal of nuclear fusion and fusion power distribution in the plasma core, which is crucial for optimization of plasma breakeven and burn. Depending on the plasma conditions neutron and gamma-ray diagnostics can provide important information, namely about dynamics of fast ion energy and spatial distributions during neutral beam injection, ion cyclotron heating and generated by fast ions MHD instabilities. The influence of the fast particle population on the 2-D neutron source profile was clearly demonstrated in JET experiments. 2-D neutron and gamma-ray source measurements could be important for driven plasma heating profile optimization in fusion reactors. To meat the measurement requirements in ITER the planned set of neutron and gamma ray diagnostics includes radial and vertical neutron and gamma cameras, neutron flux monitors, neutron activation systems and neutron spectrometers. The necessity of using massive radiation shielding strongly influences the diagnostic designs in fusion reactor, determines angular fields of view of neutron and gamma-ray cameras and spectrometers and gives rise to unavoidable difficulties in the absolute calibration. The development, testing in existing tokomaks and a possible engineering integration of neuron and gamma-ray diagnostic systems into ITER are presented.

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Time dependent 14MeV neutrons measurement using a polycrystalline chemical vapor deposited diamond detector at the JET tokamak

Cited by 33 publications

References 18 publications

Single crystal diamond detector measurements of deuterium-deuterium and deuterium-tritium neutrons in Joint European Torus fusion plasmas

Single crystal diamond detector measurements of deuterium-deuterium and deuterium-tritium neutrons in Joint European Torus fusion plasmas

Progress in neutron diagnostics at JET

Neutron and Gamma-ray Measurements

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