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| 001 | 859893 | ||
| 005 | 20240711114125.0 | ||
| 024 | 7 | _ | |a 10.1016/j.fusengdes.2018.05.041 |2 doi |
| 024 | 7 | _ | |a 0920-3796 |2 ISSN |
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| 100 | 1 | _ | |a Giacomelli, L. |0 P:(DE-HGF)0 |b 0 |e Corresponding author |
| 245 | _ | _ | |a Conceptual studies of gamma ray diagnostics for DEMO control |
| 260 | _ | _ | |a New York, NY [u.a.] |c 2018 |b Elsevier |
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| 336 | 7 | _ | |a Journal Article |0 0 |2 EndNote |
| 520 | _ | _ | |a The future tokamak demonstration fusion reactor (DEMO) will operate at unprecedented physical and technological conditions where high reliability of the system components is required. The conceptual study of a suite of DEMO diagnostics is on-going. Among these, a Gamma-Ray Spectrometric Instrument (GRSI) is being investigated to assess its performance and information quality in view of DEMO control. The GRSI foresees radial-orthogonal multi-line of sight viewing DEMO plasma across its poloidal section as a further development of the Gamma-Ray Camera of JET and of the Radial Gamma-Ray Spectrometers proposed for ITER but with stricter technological constraints. These include surface availability in the Tritium Breeding Blankets of DEMO vessel inner wall for diagnostics collimators openings, diagnostics distance from the plasma, neutron irradiation and activation of the reactor structures. On DEMO the gamma-ray (γ) emission from DT plasmas consists of T(d,γ)5He (Eγ = 16.63 MeV) and T(p,γ)4He (Eγ = 19.81 MeV) reactions which for their high Eγ would allow in principle for background-free measurements. This work reports the assessment on the GRSI diagnostic capability. Reactions cross sections are assessed and used for the calculations of the reactions γ emission energy spectrum under DEMO DT plasma conditions and compared with 14 MeV neutron emissions before and after the GRSI collimator. Investigation of the GRSI γ spectrometers performance is also presented. Measurement of the γ emission intensity of T(d,γ)5He can be in principle used as an independent assessment of DEMO DT plasmas fusion power. |
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| 700 | 1 | _ | |a Rigamonti, D. |0 P:(DE-HGF)0 |b 1 |
| 700 | 1 | _ | |a Nocente, M. |0 P:(DE-HGF)0 |b 2 |
| 700 | 1 | _ | |a Rebai, M. |0 P:(DE-HGF)0 |b 3 |
| 700 | 1 | _ | |a Tardocchi, M. |0 P:(DE-HGF)0 |b 4 |
| 700 | 1 | _ | |a Cecconello, M. |0 P:(DE-HGF)0 |b 5 |
| 700 | 1 | _ | |a Conroy, S. |0 P:(DE-HGF)0 |b 6 |
| 700 | 1 | _ | |a Hjalmarsson, A. |0 P:(DE-HGF)0 |b 7 |
| 700 | 1 | _ | |a Franke, T. |0 P:(DE-HGF)0 |b 8 |
| 700 | 1 | _ | |a Biel, W. |0 P:(DE-Juel1)129967 |b 9 |
| 773 | _ | _ | |a 10.1016/j.fusengdes.2018.05.041 |g Vol. 136, p. 1494 - 1498 |0 PERI:(DE-600)1492280-0 |n Part B |p 1494 - 1498 |t Fusion engineering and design |v 136 |y 2018 |x 0920-3796 |
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