ITER relevant developments in neutron diagnostics during the JET Trace Tritium campaign

L. Bertalot; J. M. Adams; M. Angelone; S. Conroy; B. Esposito; Y. Kaschuck; H. Henriksson; P. Lamalle; D. Marocco; A. Murari; N. Hawkes; M. Pillon; S. Popovichev; M. Reginatto; M. Riva; H. Schuhmacher; D. Stork; K. D. Zastrow; A. Zimbal

doi:10.1016/j.fusengdes.2005.06.213

ITER relevant developments in neutron diagnostics during the JET Trace Tritium campaign

L. Bertalot, J. M. Adams, M. Angelone, S. Conroy, B. Esposito, Y. Kaschuck, H. Henriksson, P. Lamalle, D. Marocco, A. Murari, N. Hawkes, M. Pillon, S. Popovichev, M. Reginatto, M. Riva, H. Schuhmacher, D. Stork, K. D. Zastrow, A. Zimbal

Laboratory for Plasma Physics

Research output: Contribution to journal › Article › peer-review

Abstract

During the JET Trace Tritium campaign a few new neutron diagnostic systems were deployed under different plasma scenarios to provide information on the total neutron emission and its spatial and energy distribution. The 14 MeV neutron yield was measured with a chemical vapour deposited (CVD) diamond detector. Comparison with the JET 14 MeV monitors (Si diodes) illustrates the good performance of the CVD device. Key information on the tritium transport and the behaviour of fast particles in the plasma was obtained from the spatially and temporally measurements of neutron emission from the upgraded neutron profile cameras which also provide an independent measure of the total neutron yield. Spatial asymmetries in the neutron emission were observed which is evidence for the influence of fast particles on the plasma. With regard to the energy distribution of the neutron emission, a spectrometer based on a liquid organic scintillator with n-γ pulse shape discrimination (PSD) features was installed. The results demonstrate that such system can operate in real fusion experiments as compact broadband neutron (1.5 MeV < E_n < 20 MeV) spectrometer with high energy resolution. A fast transient recorder has been successfully applied for digital pulse shape discrimination (DPSD) of neutron and gamma events acquired with an organic scintillator at high count rate operation (MHz range). The experience gained at JET indicates that these neutron measurement systems are suitable for large fusion devices such as JET-EP and ITER where fusion neutron diagnostics will play an increasingly important role.

Original language	English
Pages (from-to)	835-839
Number of pages	5
Journal	Fusion Engineering and Design
Volume	74
Issue number	1-4
DOIs	https://doi.org/10.1016/j.fusengdes.2005.06.213
Publication status	Published - Nov 2005

Keywords

Chemical vapour deposited detectors
Digital pulse shape discrimination
ITER diagnostics
JET Trace Tritium
Neutron detection
Scintillation detectors

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10.1016/j.fusengdes.2005.06.213

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Bertalot, L., Adams, J. M., Angelone, M., Conroy, S., Esposito, B., Kaschuck, Y., Henriksson, H., Lamalle, P., Marocco, D., Murari, A., Hawkes, N., Pillon, M., Popovichev, S., Reginatto, M., Riva, M., Schuhmacher, H., Stork, D., Zastrow, K. D., & Zimbal, A. (2005). ITER relevant developments in neutron diagnostics during the JET Trace Tritium campaign. Fusion Engineering and Design, 74(1-4), 835-839. https://doi.org/10.1016/j.fusengdes.2005.06.213

@article{9a52d5e16f80475d899e8b5e2de50ef3,

title = "ITER relevant developments in neutron diagnostics during the JET Trace Tritium campaign",

abstract = "During the JET Trace Tritium campaign a few new neutron diagnostic systems were deployed under different plasma scenarios to provide information on the total neutron emission and its spatial and energy distribution. The 14 MeV neutron yield was measured with a chemical vapour deposited (CVD) diamond detector. Comparison with the JET 14 MeV monitors (Si diodes) illustrates the good performance of the CVD device. Key information on the tritium transport and the behaviour of fast particles in the plasma was obtained from the spatially and temporally measurements of neutron emission from the upgraded neutron profile cameras which also provide an independent measure of the total neutron yield. Spatial asymmetries in the neutron emission were observed which is evidence for the influence of fast particles on the plasma. With regard to the energy distribution of the neutron emission, a spectrometer based on a liquid organic scintillator with n-γ pulse shape discrimination (PSD) features was installed. The results demonstrate that such system can operate in real fusion experiments as compact broadband neutron (1.5 MeV < En < 20 MeV) spectrometer with high energy resolution. A fast transient recorder has been successfully applied for digital pulse shape discrimination (DPSD) of neutron and gamma events acquired with an organic scintillator at high count rate operation (MHz range). The experience gained at JET indicates that these neutron measurement systems are suitable for large fusion devices such as JET-EP and ITER where fusion neutron diagnostics will play an increasingly important role.",

keywords = "Chemical vapour deposited detectors, Digital pulse shape discrimination, ITER diagnostics, JET Trace Tritium, Neutron detection, Scintillation detectors",

author = "L. Bertalot and Adams, {J. M.} and M. Angelone and S. Conroy and B. Esposito and Y. Kaschuck and H. Henriksson and P. Lamalle and D. Marocco and A. Murari and N. Hawkes and M. Pillon and S. Popovichev and M. Reginatto and M. Riva and H. Schuhmacher and D. Stork and Zastrow, {K. D.} and A. Zimbal",

year = "2005",

month = nov,

doi = "10.1016/j.fusengdes.2005.06.213",

language = "English",

volume = "74",

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journal = "Fusion Engineering and Design",

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Bertalot, L, Adams, JM, Angelone, M, Conroy, S, Esposito, B, Kaschuck, Y, Henriksson, H, Lamalle, P, Marocco, D, Murari, A, Hawkes, N, Pillon, M, Popovichev, S, Reginatto, M, Riva, M, Schuhmacher, H, Stork, D, Zastrow, KD & Zimbal, A 2005, 'ITER relevant developments in neutron diagnostics during the JET Trace Tritium campaign', Fusion Engineering and Design, vol. 74, no. 1-4, pp. 835-839. https://doi.org/10.1016/j.fusengdes.2005.06.213

TY - JOUR

T1 - ITER relevant developments in neutron diagnostics during the JET Trace Tritium campaign

AU - Bertalot, L.

AU - Adams, J. M.

AU - Angelone, M.

AU - Conroy, S.

AU - Esposito, B.

AU - Kaschuck, Y.

AU - Henriksson, H.

AU - Lamalle, P.

AU - Marocco, D.

AU - Murari, A.

AU - Hawkes, N.

AU - Pillon, M.

AU - Popovichev, S.

AU - Reginatto, M.

AU - Riva, M.

AU - Schuhmacher, H.

AU - Stork, D.

AU - Zastrow, K. D.

AU - Zimbal, A.

PY - 2005/11

Y1 - 2005/11

N2 - During the JET Trace Tritium campaign a few new neutron diagnostic systems were deployed under different plasma scenarios to provide information on the total neutron emission and its spatial and energy distribution. The 14 MeV neutron yield was measured with a chemical vapour deposited (CVD) diamond detector. Comparison with the JET 14 MeV monitors (Si diodes) illustrates the good performance of the CVD device. Key information on the tritium transport and the behaviour of fast particles in the plasma was obtained from the spatially and temporally measurements of neutron emission from the upgraded neutron profile cameras which also provide an independent measure of the total neutron yield. Spatial asymmetries in the neutron emission were observed which is evidence for the influence of fast particles on the plasma. With regard to the energy distribution of the neutron emission, a spectrometer based on a liquid organic scintillator with n-γ pulse shape discrimination (PSD) features was installed. The results demonstrate that such system can operate in real fusion experiments as compact broadband neutron (1.5 MeV < En < 20 MeV) spectrometer with high energy resolution. A fast transient recorder has been successfully applied for digital pulse shape discrimination (DPSD) of neutron and gamma events acquired with an organic scintillator at high count rate operation (MHz range). The experience gained at JET indicates that these neutron measurement systems are suitable for large fusion devices such as JET-EP and ITER where fusion neutron diagnostics will play an increasingly important role.

AB - During the JET Trace Tritium campaign a few new neutron diagnostic systems were deployed under different plasma scenarios to provide information on the total neutron emission and its spatial and energy distribution. The 14 MeV neutron yield was measured with a chemical vapour deposited (CVD) diamond detector. Comparison with the JET 14 MeV monitors (Si diodes) illustrates the good performance of the CVD device. Key information on the tritium transport and the behaviour of fast particles in the plasma was obtained from the spatially and temporally measurements of neutron emission from the upgraded neutron profile cameras which also provide an independent measure of the total neutron yield. Spatial asymmetries in the neutron emission were observed which is evidence for the influence of fast particles on the plasma. With regard to the energy distribution of the neutron emission, a spectrometer based on a liquid organic scintillator with n-γ pulse shape discrimination (PSD) features was installed. The results demonstrate that such system can operate in real fusion experiments as compact broadband neutron (1.5 MeV < En < 20 MeV) spectrometer with high energy resolution. A fast transient recorder has been successfully applied for digital pulse shape discrimination (DPSD) of neutron and gamma events acquired with an organic scintillator at high count rate operation (MHz range). The experience gained at JET indicates that these neutron measurement systems are suitable for large fusion devices such as JET-EP and ITER where fusion neutron diagnostics will play an increasingly important role.

KW - Chemical vapour deposited detectors

KW - Digital pulse shape discrimination

KW - ITER diagnostics

KW - JET Trace Tritium

KW - Neutron detection

KW - Scintillation detectors

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U2 - 10.1016/j.fusengdes.2005.06.213

DO - 10.1016/j.fusengdes.2005.06.213

M3 - Article

AN - SCOPUS:27844441368

SN - 0920-3796

VL - 74

SP - 835

EP - 839

JO - Fusion Engineering and Design

JF - Fusion Engineering and Design

IS - 1-4

ER -

ITER relevant developments in neutron diagnostics during the JET Trace Tritium campaign

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Keywords

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