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Fast-ion orbit sens...
Fast-ion orbit sensitivity of neutron and gamma-ray diagnostics for one-step fusion reactions
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- Järleblad, H. (författare)
- Tech Univ Denmark, Deparuneut Phys, DK-2800 Lyngby, Denmark.
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- Stagner, L. (författare)
- Gen Atom, POB 85608, San Diego, CA 92186 USA.
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- Salewski, M. (författare)
- Tech Univ Denmark, Deparuneut Phys, DK-2800 Lyngby, Denmark.
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- Eriksson, Jacob, Dr, 1985- (författare)
- Uppsala universitet,Tillämpad kärnfysik
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- Nocente, M. (författare)
- Univ Milano Bicocca, Dept Phys, I-20126 Milan, Italy.
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- Rasmussen, J. (författare)
- Tech Univ Denmark, Deparuneut Phys, DK-2800 Lyngby, Denmark.
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- Stancar, Z. (författare)
- Jozef Stefan Inst, Ljubljana 1000, Slovenia.;UKAEA, Culham Ctr Fus Energy, Abingdon OX14 3DB, Oxon, England.
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- Kazakov, Ye O. (författare)
- TEC Partner, LPP ERM KMS, Lab Plasma Phys, B-1000 Brussels, Belgium.
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- Simmendefeldt, B. (författare)
- Tech Univ Denmark, Deparuneut Phys, DK-2800 Lyngby, Denmark.
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Tech Univ Denmark, Deparuneut Phys, DK-2800 Lyngby, Denmark Gen Atom, POB 85608, San Diego, CA 92186 USA. (creator_code:org_t)
- 2022-09-29
- 2022
- Engelska.
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Ingår i: Nuclear Fusion. - : Institute of Physics (IOP). - 0029-5515 .- 1741-4326. ; 62:11
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Fast ions in the MeV-range can be diagnosed by neutron emission spectroscopy (NES) and gamma-ray spectroscopy (GRS). In this work, we present orbit weight functions for one-step fusion reactions, using NES and GRS diagnostics on perpendicular and oblique lines-of-sight (LOS) at Joint European Torus (JET) as examples. The orbit weight functions allow us to express the sensitivities of the diagnostics in terms of fast-ion (FI) orbits and can be used to swiftly reproduce synthetic signals that have been computed by established codes. For diagnostically relevant neutron energies for the D(D, n)He-3 reaction, the orbit sensitivities of the NES diagnostics follow a predictable pattern. As the neutron energy of interest increases, the pattern shifts upwards in FI energy. For the GRS diagnostic and the T(p,gamma)He-4 reaction, the orbit sensitivity is shown to be qualitatively different for red-shifted, blue-shifted and nominal gamma birth energies. Finally, we demonstrate how orbit weight functions can be used to decompose diagnostic signals into the contributions from different orbit types. For a TRANSP simulation of the JET discharge (a three-ion ICRF scenario) considered in this work, the NES signals for both the perpendicular and oblique LOS are shown to originate mostly from co-passing orbits. In addition, a significant fraction of the NES signal for the oblique LOS is shown to originate from stagnation orbits.
Ämnesord
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Nyckelord
- tomography
- plasma diagnostics
- neutron emission
- gamma-ray emission
- energetic particle physics
- energetic particle diagnostics
- one-step fusion reactions
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Järleblad, H.
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Stagner, L.
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Salewski, M.
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Eriksson, Jacob, ...
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Nocente, M.
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Rasmussen, J.
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visa fler...
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Stancar, Z.
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Kazakov, Ye O.
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Simmendefeldt, B ...
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