Neutron profile measurements for trace tritium experiments

M. J. Loughlin; N. Watkins; J. M. Adams; N. Basse; N. P. Hawkes; O. N. Jarvis; G. Matthews; F. B. Marcus; M. O'Mullane; G. Sadler; J. D. Strachan; P. Van Belle; K. D. Zastrow

doi:10.1063/1.1149330

Neutron profile measurements for trace tritium experiments

M. J. Loughlin, N. Watkins, J. M. Adams, N. Basse, N. P. Hawkes, O. N. Jarvis, G. Matthews, F. B. Marcus, M. O'Mullane, G. Sadler, J. D. Strachan, P. Van Belle, K. D. Zastrow

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15 Scopus citations

Abstract

The JET neutron profile monitor was used to study the transport of tritium into a magnetically confined deuterium plasma. Trace amounts of tritium were introduced through a gas valve beyond the plasma edge into a variety of plasma confinement regimes. The d(t,n)α fusion cross section is two orders of magnitude greater than the d(d,n)³He cross section and so a puff of tritium which has a negligible effect on the plasma nevertheless produces a large d-t neutron signal. The profile monitor consists of two cameras each made up of a fan-shaped array of collimated lines of sight. It was used to measure the d-d and d-t neutron profiles simultaneously. This article describes the detection system, its operation and assesses the difficulties due to scattered neutrons. The profiles can be used to determine tritium density and transport coefficients.

Original language	English
Pages (from-to)	1123-1125
Number of pages	3
Journal	Review of Scientific Instruments
Volume	70
Issue number	1 II
DOIs	https://doi.org/10.1063/1.1149330
State	Published - Jan 1999
Externally published	Yes

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title = "Neutron profile measurements for trace tritium experiments",

abstract = "The JET neutron profile monitor was used to study the transport of tritium into a magnetically confined deuterium plasma. Trace amounts of tritium were introduced through a gas valve beyond the plasma edge into a variety of plasma confinement regimes. The d(t,n)α fusion cross section is two orders of magnitude greater than the d(d,n)3He cross section and so a puff of tritium which has a negligible effect on the plasma nevertheless produces a large d-t neutron signal. The profile monitor consists of two cameras each made up of a fan-shaped array of collimated lines of sight. It was used to measure the d-d and d-t neutron profiles simultaneously. This article describes the detection system, its operation and assesses the difficulties due to scattered neutrons. The profiles can be used to determine tritium density and transport coefficients.",

author = "Loughlin, {M. J.} and N. Watkins and Adams, {J. M.} and N. Basse and Hawkes, {N. P.} and Jarvis, {O. N.} and G. Matthews and Marcus, {F. B.} and M. O'Mullane and G. Sadler and Strachan, {J. D.} and {Van Belle}, P. and Zastrow, {K. D.}",

year = "1999",

month = jan,

doi = "10.1063/1.1149330",

language = "English",

volume = "70",

pages = "1123--1125",

journal = "Review of Scientific Instruments",

issn = "0034-6748",

publisher = "American Institute of Physics",

number = "1 II",

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TY - JOUR

T1 - Neutron profile measurements for trace tritium experiments

AU - Loughlin, M. J.

AU - Watkins, N.

AU - Adams, J. M.

AU - Basse, N.

AU - Hawkes, N. P.

AU - Jarvis, O. N.

AU - Matthews, G.

AU - Marcus, F. B.

AU - O'Mullane, M.

AU - Sadler, G.

AU - Strachan, J. D.

AU - Van Belle, P.

AU - Zastrow, K. D.

PY - 1999/1

Y1 - 1999/1

N2 - The JET neutron profile monitor was used to study the transport of tritium into a magnetically confined deuterium plasma. Trace amounts of tritium were introduced through a gas valve beyond the plasma edge into a variety of plasma confinement regimes. The d(t,n)α fusion cross section is two orders of magnitude greater than the d(d,n)3He cross section and so a puff of tritium which has a negligible effect on the plasma nevertheless produces a large d-t neutron signal. The profile monitor consists of two cameras each made up of a fan-shaped array of collimated lines of sight. It was used to measure the d-d and d-t neutron profiles simultaneously. This article describes the detection system, its operation and assesses the difficulties due to scattered neutrons. The profiles can be used to determine tritium density and transport coefficients.

AB - The JET neutron profile monitor was used to study the transport of tritium into a magnetically confined deuterium plasma. Trace amounts of tritium were introduced through a gas valve beyond the plasma edge into a variety of plasma confinement regimes. The d(t,n)α fusion cross section is two orders of magnitude greater than the d(d,n)3He cross section and so a puff of tritium which has a negligible effect on the plasma nevertheless produces a large d-t neutron signal. The profile monitor consists of two cameras each made up of a fan-shaped array of collimated lines of sight. It was used to measure the d-d and d-t neutron profiles simultaneously. This article describes the detection system, its operation and assesses the difficulties due to scattered neutrons. The profiles can be used to determine tritium density and transport coefficients.

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JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 1 II

ER -

Neutron profile measurements for trace tritium experiments

Abstract

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