The neutron camera upgrade for MAST Upgrade

Cecconello, M.; Sperduti, A.; Fitzgerald, I.; Conroy, S.; Holm, S. J.; Weiszflog, M.

doi:10.1063/1.5038948

Title: The neutron camera upgrade for MAST Upgrade

Journal Article · Thu Sep 20 00:00:00 EDT 2018 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.5038948· OSTI ID:1610537

Cecconello, M. ^[1];

^[1]; Fitzgerald, I. ^[2]; Conroy, S. ^[1]; Holm, S. J. ^[1]; Weiszflog, M. ^[1]

Uppsala Univ. (Sweden)
Culham Science Centre, Abingdon (United Kingdom)

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. Finally, 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.

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Research Organization:: Florida International Univ. (FIU), Miami, FL (United States); Princeton Univ., NJ (United States)

Sponsoring Organization:: USDOE Office of Science (SC); Swedish Research Council (SRC); European Union (EU)

Grant/Contract Number:: SC0001157; AC02-09CH11466; EP/P012450/1; 633053

OSTI ID:: 1610537

Journal Information:: Review of Scientific Instruments, Vol. 89, Issue 10; ISSN 0034-6748

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 2 works

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References (15)

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