Measurements of triton burnup in low q discharges in the FT tokamak

Batistoni, P.; Martone, M.; Pillon, M.; Podda, S.; Rapisarda, M.

doi:10.1088/0029-5515/27/6/017

Cited by 32 publications

(43 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The use of neutron activation methods for determining the neutron fluence at the measuring points has a long history in the neutron metrology and methods have been developed that permit the full energy spectrum to be deduced for neutron energies ranging from thermal up to 20 MeV. Tokamak applications of the neutron activation method are well developed [16,17,18,19,20,21,22] and are concentrated in the interesting neutron energies band at 2.5 and 14 MeV. The activation technique was also used to measure time-integrated neutron spectra [23].…”

Section: Time-integrated Neutron Emissionmentioning

confidence: 99%

Neutron Diagnostics for Reactor Scale Fusion Experiments

Bonheure¹,

Angelone²,

Barnsley³

et al. 2007

Proceedings of International Workshop on Fast Neutron Detectors and Applications — PoS(FNDA2006)

Self Cite

View full text Add to dashboard Cite

8 See annex of Pamela J et al 2003 Overview of recent JET results Nucl.Fusion 43.Fusion is preparing for and moving towards reactor scale plasma experiments. The ITER project requires stepping up the capabilities of neutron measurement systems because in a fusion reactor, measurements of neutron yield and of fusion power and power density are essential. Fast neutron measurement systems for fusion applications include neutron flux measurement systems, neutron imaging systems and neutron spectrometers. The JET tokamak is the most suitable test bed for the development of these systems due to its plasma parameters and unique tritium operation capability. Existing systems include 2 neutron cameras composed of multi-collimator arrays and which allow the development of more advanced applications such as 2-D neutron imaging for the study of critical physical phenomena. The spectral width of the neutron emission should be a reliable indicator of ion temperature in a reactor grade plasma. Therefore, three types of neutron spectrometers are currently being developed. The different approaches, methods and calibration techniques are summarised. Finally, since the needs for development of robust and proved neutron measurement systems for ITER are increasingly recognised, JET has now started a series of interesting technological developments in various fields including new radiation hard detectors, new electronics and data acquisition.

show abstract

Section: Time-integrated Neutron Emissionmentioning

confidence: 99%

Neutron Diagnostics for Reactor Scale Fusion Experiments

Bonheure¹,

Angelone²,

Barnsley³

et al. 2007

Proceedings of International Workshop on Fast Neutron Detectors and Applications — PoS(FNDA2006)

Self Cite

View full text Add to dashboard Cite

show abstract

“…1). This picture applies to either D-D plasmas (where 14 MeV neutrons came from triton burn-up 16 ) and D-T plasmas. The ratio between 14 MeV and 2.5 MeV neutrons for D-D plasmas is lower than 0.02, while for D-T plasmas it depends upon the D/T ratio.…”

Section: High Quality Polycrystalline Cvd Diamond Film For Radiatmentioning

confidence: 99%

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

Angelone

Pillon

Bertalot

et al. 2004

Review of Scientific Instruments

Self Cite

View full text Add to dashboard Cite

A polycrystalline chemical vapor deposited (CVD) diamond detector was installed on a JET tokamak in order to monitor the time dependent 14MeV neutron emission produced by D–T plasma pulses during the Trace Tritium Experiment (TTE) performed in October 2003. This was the first tentative ever attempted to use a CVD diamond detector as neutron monitor in a tokamak environment. Despite its small active volume, the detector was able to detect the 14MeV neutron emission (>1.0×1015n∕shot) with good reliability and stability during the experimental campaign that lasted five weeks. The comparison with standard silicon detectors presently used at JET as 14MeV neutron monitors is reported, showing excellent correlation between the measurements. The results prove that CVD diamond detectors can be reliably used in a tokamak environment and therefore confirm the potential of this technology for next step machines like ITER.

show abstract

“…A relatively high DT neutron emission rate indicates that tritons slow properly because the DT reaction cross section has a peak of approximately 100 keV. Shot-integrated triton burnup ratio research has been performed mainly by neutron activation systems to show alpha confinement capability in existing magnetic confinement fusion devices [3][4][5][6][7][8][9][10][11]. The other important topic is the transport of alpha particles due to the magnetohydrodynamic (MHD) instabilities in a fusion reactor.…”

Section: Introductionmentioning

confidence: 99%

Time-resolved secondary triton burnup 14 MeV neutron measurement by a new scintillating fiber detector in middle total neutron emission ranges in deuterium large helical device plasma experiments

et al. 2021

View full text Add to dashboard Cite

A middle-sensitivity scintillating fiber detector (hereafter middle Sci-Fi detector) that works at a deuterium-tritium neutron flux of ~105-107 cm−2s−1 was utilized to measure secondary deuterium-tritium neutron emission rates with high temporal resolution at a total neutron emission rate of 1013 to 1015 n/s, where strong magnetohydrodynamic (MHD) instabilities were observed in the large helical device deuterium plasma experiments. The gain and angular characteristics of the middle Sci-Fi detector were evaluated in an accelerator-based deuterium-tritium neutron source in the intense 14 MeV neutron source facility at Osaka University. Observation of 1 MeV triton transport due to MHD instability was performed by a middle Sci-Fi detector whose deuterium-tritium neutron counting rate was approximately 20 times higher than that of the conventional Sci-Fi detector. Fusion-born triton transport due to energetic-particle-driven MHD instability was observed using the middle Sci-Fi detector due to its high detection efficiency and high discrimination ability of deuterium-tritium neutrons from the sea of deuterium-deuterium neutrons.

show abstract

Measurements of triton burnup in low q discharges in the FT tokamak

Cited by 32 publications

References 3 publications

Neutron Diagnostics for Reactor Scale Fusion Experiments

Neutron Diagnostics for Reactor Scale Fusion Experiments

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

Time-resolved secondary triton burnup 14 MeV neutron measurement by a new scintillating fiber detector in middle total neutron emission ranges in deuterium large helical device plasma experiments

Contact Info

Product

Resources

About