Development of a measuring technique based on JET second D-T campaign (DTE2) experience for assessing fusion power at ITER during D-T operation using the radial gamma-ray spectrometer

被引：0

作者：

Marcer, G. ^{[1
]}

Scioscioli, F. ^{[1
]}

Croci, G. ^{[1
]}

Dal Molin, A. ^{[2
]}

Gorini, G. ^{[1
]}

Muraro, A. ^{[2
]}

Nocente, M. ^{[1
]}

Perelli Cippo, E. ^{[2
]}

Rebai, M. ^{[2
]}

Rigamonti, D. ^{[2
]}

Coriton, B. ^{[3
]}

Kovalev, A. ^{[3
]}

Polevoi, A. ^{[3
]}

Khilkevitch, E. ^{[4
]}

Shevelev, A. ^{[4
]}

Bracco, A. ^{[4
]}

Camera, F. ^{[4
]}

Cazzaniga, C. ^{[5
]}

Tardocchi, M. ^{[2
]}

机构：

[1] Univ Milano Bicocca, Dept Phys, Milan, Italy

[2] CNR, Inst Plasma Sci & Technol, Milan, Italy

[3] ITER Org, Diagnost Program, St Paul Les Durance, France

[4] Univ Milan, Dept Phys, Milan, Italy

[5] Rutherford Appleton Lab, UKRI STFC, Didcot, England

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2024年 / 95卷 / 08期

关键词：

D O I：

10.1063/5.0217677

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The ITER Radial Gamma-Ray Spectrometer (RGRS) consists of three gamma-ray detectors observing the plasma through three collimated, coplanar, radial lines of sight (LoS). The system was initially designed to monitor the runaway electron emission and the alpha-particle density profile [Nocente et al., Nucl. Fusion 57, 076016 (2017)]. This work presents a novel technique for measuring the fusion power during D-T operation using the RGRS. This method is based on the absolute measurement of the 17 MeV fusion gamma-rays and a semi-analytical computation of their transport from the plasma source to the detectors. This approach was initially developed and tested at JET during the second D-T campaign (DTE2) on a single LoS diagnostic [Dal Molin et al., Phys. Rev. Lett. (submitted) (2024); Rebai et al., Phys. Rev. C (submitted) (2024); and Marcer et al., Nucl. Fusion (unpublished) (2024)]. This work exploits the multiple LoS of the RGRS to create a combined virtual diagnostic whose detected fraction of the total plasma emission is less affected by variations in the plasma emission profile, reducing systematic uncertainties on the estimated total emission, compared to the individual detectors.

引用

页数：6

共 2 条

[1] DETECTOR DEVELOPMENT FOR GAMMA-RAY DIAGNOSTICS OF D-T FUSION REACTIONS
MORAN, MJ
REVIEW OF SCIENTIFIC INSTRUMENTS, 1985, 56 (05): : 1066 - 1068
[2] ITER materials irradiation within the D-T neutron environment at JET: post-irradiation radioactivity analysis following the DTE2 experimental campaign
Packer, L. W.
Batistoni, P.
Bearcroft, C.
Bradnam, S. C.
Eardley, E.
Fabbri, M.
Fonnesu, N.
Gilbert, M. R.
Ghani, Z.
Gorzkiewicz, K.
Grove, C. L.
Kierepko, R.
Laszynska, E.
Lengar, I.
Litaudon, X.
Loreti, S.
Mietelski, J. W.
Pillon, M.
Savva, M. I.
Shand, C. R.
Stamatelatos, I. E.
Turner, A. N.
Vasilopoulou, T.
Villari, R.
Wojcik-Gargula, A.
Zohar, A.
NUCLEAR FUSION, 2024, 64 (10)

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