Estimating the neutron yield in a deuterium plasma with the JET neutron camera

被引：1

作者：

Hagg, Linus ^{[1
]}

Binda, Federico ^{[2
]}

Conroy, Sean ^{[1
]}

Ericsson, Goeran ^{[1
]}

Ghani, Zamir ^{[3
]}

Giacomelli, Luca ^{[4
]}

Marocco, Daniele ^{[5
]}

Milocco, Alberto ^{[6
]}

Riva, Marco ^{[5
]}

Sunden, Erik Andersson ^{[1
]}

JET Contributors

机构：

[1] Uppsala Univ, Dept Phys & Astron, SE-75105 Uppsala, Sweden

[2] Oversattravagen 17, S-18470 Akersberga, Stockholms Lan, Sweden

[3] Culham Sci Ctr, United Kingdom Atom Energy Author, Abingdon OX14 3DB, Oxon, England

[4] European Commiss, Joint Res Ctr, I-21027 Ispra, VA, Italy

[5] ENEA, Fus & Technol Nucl Safety & Secur Dept, CR Frascati, Via E Fermi 45, I-00044 Rome, Italy

[6] Univ Milan, Bicocca Univ, Phys Dept G Occhialini, Milan, Italy

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2023年 / 94卷 / 07期

关键词：

DIAGNOSTICS; PROFILES;

D O I：

10.1063/5.0144654

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The JET neutron camera is a well-established detector system at JET, which has 19 sightlines each equipped with a liquid scintillator. The system measures a 2D profile of the neutron emission from the plasma. A first principle physics method is used to estimate the DD neutron yield that is based on JET neutron camera measurements and is independent of other neutron measurements. This paper details the data reduction techniques, models of the neutron camera, simulations of neutron transport, and detector responses used to this end. The estimate uses a simple parameterized model of the neutron emission profile. The method makes use of the JET neutron camera's upgraded data acquisition system. It also accounts for neutron scattering near the detectors and transmission through the collimator. These components together contribute to 9% of the detected neutron rate above a 0.5 MeVee energy threshold. Despite the simplicity of the neutron emission profile model, the DD neutron yield estimate falls on average within 10% agreement with a corresponding estimate from the JET fission chambers. The method can be improved by considering more advanced neutron emission profiles. It can also be expanded to estimate the DT neutron yield with the same methodology.

引用

页数：15

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