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The neutron camera upgrade for MAST Upgrade.
Cecconello, M; Sperduti, A; Fitzgerald, I; Conroy, S; Holm, S J; Weiszflog, M.
Afiliação
  • Cecconello M; Department of Physics and Astronomy, Uppsala University, EURATOM-VR Association, Uppsala, Sweden.
  • Sperduti A; Department of Physics and Astronomy, Uppsala University, EURATOM-VR Association, Uppsala, Sweden.
  • Fitzgerald I; EURATOM/CCFE Fusion Association, Culham Science Centre, Abingdon, United Kingdom.
  • Conroy S; Department of Physics and Astronomy, Uppsala University, EURATOM-VR Association, Uppsala, Sweden.
  • Holm SJ; Department of Physics and Astronomy, Uppsala University, EURATOM-VR Association, Uppsala, Sweden.
  • Weiszflog M; Department of Physics and Astronomy, Uppsala University, EURATOM-VR Association, Uppsala, Sweden.
Rev Sci Instrum ; 89(10): 10I110, 2018 Oct.
Article em En | MEDLINE | ID: mdl-30399869
The Neutron Camera Upgrade (NCU) is a neutron flux monitor consisting of six lines of sight (LoSs) under installation on Mega Ampere Spherical Tokamak (MAST) Upgrade. The NCU is expected to contribute to the study of the confinement of fast ions and on the efficiency of non-inductive current drive in the presence of on-axis and off-axis neutral beam injection by measuring the neutron emissivity profile along the equatorial plane. This paper discusses the NCU main design criteria, the engineering and interfacing issues, and the solutions adopted. In addition, the results from the characterization and performance studies of the neutron detectors using standard γ-rays sources and a 252Cf source are discussed. The proposed design has a time resolution of 1 ms with a statistical uncertainty of less than 10% for all MAST Upgrade scenarios with a spatial resolution of 10 cm: higher spatial resolution is possible by moving the LoSs in-between plasma discharges. The energy resolution of the neutron detector is better than 10% for a light output of 0.8 MeVee, and the measured pulse shape discrimination is satisfactory.

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Rev Sci Instrum Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Suécia

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Rev Sci Instrum Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Suécia