Activation material selection for multiple foil activation detectors in JET TT campaign

Igor Lengar, Aljaž Čufar, Vladimir Radulović, Paola Batistoni, Sergey Popovichev, Lee Packer, Zamir Ghani, Ivan A. Kodeli, Sean Conroy, Luka Snoj

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In the preparation for the Deuterium-Tritium campaign, JET will operate with a tritium plasma. The T + T reaction consists of two notable channels: (1) T + T →4He + 2n, (2) T + T →5He + n →4He + 2n. The reaction channel (1) is the reaction with the highest branching ratio and a continuum of neutron energies being produced. Reaction channel (2) produces a spectrum with a peak at 8.8 MeV. A particular problem is the ratio between the individual TT reaction channels, which is highly dependent on the energy of the reacting tritium ions. There are very few measurements on the TT spectrum and the study at JET would be interesting. The work is focused on the determination of the spectral characteristics in the TT plasma discharges, especially on the presence of the 8.8 MeV peak, a consequence of channel (2) of the TT reaction. The possibility to use an optimized set of activation materials in order to target the measurement of the 8.8 MeV peak is studied. The lower limit of detection for the channel (2) ratio within the TT reaction is estimated and the influence of DT source neutrons, which are a consequence of deuterium traces in the plasma, is investigated.
Original languageEnglish
Pages (from-to)-
JournalFusion Engineering and Design
DOIs
Publication statusAccepted/In press - 2018
Externally publishedYes

Fingerprint

Tritium
Metal foil
Deuterium
Chemical activation
Detectors
Plasmas
Neutron sources
Neutrons
Ions

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Nuclear Energy and Engineering
  • Materials Science(all)
  • Mechanical Engineering

Cite this

Lengar, Igor ; Čufar, Aljaž ; Radulović, Vladimir ; Batistoni, Paola ; Popovichev, Sergey ; Packer, Lee ; Ghani, Zamir ; Kodeli, Ivan A. ; Conroy, Sean ; Snoj, Luka. / Activation material selection for multiple foil activation detectors in JET TT campaign. In: Fusion Engineering and Design. 2018 ; pp. -.
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abstract = "In the preparation for the Deuterium-Tritium campaign, JET will operate with a tritium plasma. The T + T reaction consists of two notable channels: (1) T + T →4He + 2n, (2) T + T →5He + n →4He + 2n. The reaction channel (1) is the reaction with the highest branching ratio and a continuum of neutron energies being produced. Reaction channel (2) produces a spectrum with a peak at 8.8 MeV. A particular problem is the ratio between the individual TT reaction channels, which is highly dependent on the energy of the reacting tritium ions. There are very few measurements on the TT spectrum and the study at JET would be interesting. The work is focused on the determination of the spectral characteristics in the TT plasma discharges, especially on the presence of the 8.8 MeV peak, a consequence of channel (2) of the TT reaction. The possibility to use an optimized set of activation materials in order to target the measurement of the 8.8 MeV peak is studied. The lower limit of detection for the channel (2) ratio within the TT reaction is estimated and the influence of DT source neutrons, which are a consequence of deuterium traces in the plasma, is investigated.",
author = "Igor Lengar and Aljaž Čufar and Vladimir Radulović and Paola Batistoni and Sergey Popovichev and Lee Packer and Zamir Ghani and Kodeli, {Ivan A.} and Sean Conroy and Luka Snoj",
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Lengar, I, Čufar, A, Radulović, V, Batistoni, P, Popovichev, S, Packer, L, Ghani, Z, Kodeli, IA, Conroy, S & Snoj, L 2018, 'Activation material selection for multiple foil activation detectors in JET TT campaign', Fusion Engineering and Design, pp. -. https://doi.org/10.1016/j.fusengdes.2018.04.052

Activation material selection for multiple foil activation detectors in JET TT campaign. / Lengar, Igor; Čufar, Aljaž; Radulović, Vladimir; Batistoni, Paola; Popovichev, Sergey; Packer, Lee; Ghani, Zamir; Kodeli, Ivan A.; Conroy, Sean; Snoj, Luka.

In: Fusion Engineering and Design, 2018, p. -.

Research output: Contribution to journalArticle

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T1 - Activation material selection for multiple foil activation detectors in JET TT campaign

AU - Lengar, Igor

AU - Čufar, Aljaž

AU - Radulović, Vladimir

AU - Batistoni, Paola

AU - Popovichev, Sergey

AU - Packer, Lee

AU - Ghani, Zamir

AU - Kodeli, Ivan A.

AU - Conroy, Sean

AU - Snoj, Luka

PY - 2018

Y1 - 2018

N2 - In the preparation for the Deuterium-Tritium campaign, JET will operate with a tritium plasma. The T + T reaction consists of two notable channels: (1) T + T →4He + 2n, (2) T + T →5He + n →4He + 2n. The reaction channel (1) is the reaction with the highest branching ratio and a continuum of neutron energies being produced. Reaction channel (2) produces a spectrum with a peak at 8.8 MeV. A particular problem is the ratio between the individual TT reaction channels, which is highly dependent on the energy of the reacting tritium ions. There are very few measurements on the TT spectrum and the study at JET would be interesting. The work is focused on the determination of the spectral characteristics in the TT plasma discharges, especially on the presence of the 8.8 MeV peak, a consequence of channel (2) of the TT reaction. The possibility to use an optimized set of activation materials in order to target the measurement of the 8.8 MeV peak is studied. The lower limit of detection for the channel (2) ratio within the TT reaction is estimated and the influence of DT source neutrons, which are a consequence of deuterium traces in the plasma, is investigated.

AB - In the preparation for the Deuterium-Tritium campaign, JET will operate with a tritium plasma. The T + T reaction consists of two notable channels: (1) T + T →4He + 2n, (2) T + T →5He + n →4He + 2n. The reaction channel (1) is the reaction with the highest branching ratio and a continuum of neutron energies being produced. Reaction channel (2) produces a spectrum with a peak at 8.8 MeV. A particular problem is the ratio between the individual TT reaction channels, which is highly dependent on the energy of the reacting tritium ions. There are very few measurements on the TT spectrum and the study at JET would be interesting. The work is focused on the determination of the spectral characteristics in the TT plasma discharges, especially on the presence of the 8.8 MeV peak, a consequence of channel (2) of the TT reaction. The possibility to use an optimized set of activation materials in order to target the measurement of the 8.8 MeV peak is studied. The lower limit of detection for the channel (2) ratio within the TT reaction is estimated and the influence of DT source neutrons, which are a consequence of deuterium traces in the plasma, is investigated.

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