Monitoring the leakage of 3.0 and 14.7 MeV protons from a fusion plasma

Raquel González De Orduña; Mikael Hult; Georges Bonheure; Matthias Laubenstein; Gerd Marissens; Peter Vermaercke; J. S. Elisabeth Wieslander; Andrea Murari

doi:10.1016/j.nima.2010.12.151

Monitoring the leakage of 3.0 and 14.7 MeV protons from a fusion plasma

Raquel González De Orduña
, Mikael Hult
, Georges Bonheure
, Matthias Laubenstein
, Gerd Marissens
, Peter Vermaercke
, J. S. Elisabeth Wieslander
, Andrea Murari

Laboratory for Plasma Physics

Inst. for Syst., Info., and Safely
Laboratori Nazionali del Gran Sasso
STUDIECENTRUM VOOR KERNENERGIE / CENTRE D'ETUDE DE L'ENERGIE NUCLEAIRE
Consorzio Rfx
CTBTO Preparatory Commission

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An experiment to study, separately, the leakage of protons of 3.0 and 14.7 MeV in the JET Tokamak, is presented. The activity of the activation products induced by the plasma in different samples that were placed inside the Tokamak was measured using ultra low-level gamma-ray spectrometry (ULGS). Stacking of some of the samples during activation allowed differentiating between the protons of 3.0 and 14.7 MeV that originated in two different reactions in the plasma. For the B₄C sample the ratio of the 3.0 and 14.7 MeV proton flux could be determined as 0.17(10) assuming normal incidence and 0.31(16) assuming 45° incidence. For LiF the result obtained was that, within the uncertainty, there was no contribution from the 3.0 MeV protons.

Originele taal-2	Engels
Pagina's (van-tot)	89-100
Aantal pagina's	12
Tijdschrift	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	632
Nummer van het tijdschrift	1
DOI's	https://doi.org/10.1016/j.nima.2010.12.151
Status	Gepubliceerd - 11 mrt 2011

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10.1016/j.nima.2010.12.151

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González De Orduña, R., Hult, M., Bonheure, G., Laubenstein, M., Marissens, G., Vermaercke, P., Elisabeth Wieslander, J. S., & Murari, A. (2011). Monitoring the leakage of 3.0 and 14.7 MeV protons from a fusion plasma. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 632(1), 89-100. https://doi.org/10.1016/j.nima.2010.12.151

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title = "Monitoring the leakage of 3.0 and 14.7 MeV protons from a fusion plasma",

abstract = "An experiment to study, separately, the leakage of protons of 3.0 and 14.7 MeV in the JET Tokamak, is presented. The activity of the activation products induced by the plasma in different samples that were placed inside the Tokamak was measured using ultra low-level gamma-ray spectrometry (ULGS). Stacking of some of the samples during activation allowed differentiating between the protons of 3.0 and 14.7 MeV that originated in two different reactions in the plasma. For the B4C sample the ratio of the 3.0 and 14.7 MeV proton flux could be determined as 0.17(10) assuming normal incidence and 0.31(16) assuming 45° incidence. For LiF the result obtained was that, within the uncertainty, there was no contribution from the 3.0 MeV protons.",

keywords = "Activation, Proton leakage, Thermonuclear fusion, Ultra low-level gamma-ray spectrometry, Underground laboratory",

author = "\{Gonz{\'a}lez De Ordu{\~n}a\}, Raquel and Mikael Hult and Georges Bonheure and Matthias Laubenstein and Gerd Marissens and Peter Vermaercke and \{Elisabeth Wieslander\}, \{J. S.\} and Andrea Murari",

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González De Orduña, R, Hult, M, Bonheure, G, Laubenstein, M, Marissens, G, Vermaercke, P, Elisabeth Wieslander, JS & Murari, A 2011, 'Monitoring the leakage of 3.0 and 14.7 MeV protons from a fusion plasma', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 632, nr. 1, blz. 89-100. https://doi.org/10.1016/j.nima.2010.12.151

Monitoring the leakage of 3.0 and 14.7 MeV protons from a fusion plasma. / González De Orduña, Raquel; Hult, Mikael; Bonheure, Georges et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 632, Nr. 1, 11.03.2011, blz. 89-100.

Onderzoeksoutput: Bijdrage aan een tijdschrift › Artikel › peer review

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T1 - Monitoring the leakage of 3.0 and 14.7 MeV protons from a fusion plasma

AU - González De Orduña, Raquel

AU - Hult, Mikael

AU - Bonheure, Georges

AU - Laubenstein, Matthias

AU - Marissens, Gerd

AU - Vermaercke, Peter

AU - Elisabeth Wieslander, J. S.

AU - Murari, Andrea

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AB - An experiment to study, separately, the leakage of protons of 3.0 and 14.7 MeV in the JET Tokamak, is presented. The activity of the activation products induced by the plasma in different samples that were placed inside the Tokamak was measured using ultra low-level gamma-ray spectrometry (ULGS). Stacking of some of the samples during activation allowed differentiating between the protons of 3.0 and 14.7 MeV that originated in two different reactions in the plasma. For the B4C sample the ratio of the 3.0 and 14.7 MeV proton flux could be determined as 0.17(10) assuming normal incidence and 0.31(16) assuming 45° incidence. For LiF the result obtained was that, within the uncertainty, there was no contribution from the 3.0 MeV protons.

KW - Activation

KW - Proton leakage

KW - Thermonuclear fusion

KW - Ultra low-level gamma-ray spectrometry

KW - Underground laboratory

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Monitoring the leakage of 3.0 and 14.7 MeV protons from a fusion plasma

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