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The neutron camera upgrade for MAST Upgrade.
M Cecconello1, A Sperduti1, I Fitzgerald2
1Department of Physics and Astronomy, Uppsala University, EURATOM-VR Association, Uppsala, Sweden.
The Neutron Camera Upgrade (NCU) enhances fusion energy research by measuring neutron emissivity profiles. This advanced diagnostic tool provides crucial data for understanding fast ion confinement and current drive efficiency in tokamaks.
Area of Science:
- Nuclear Fusion Engineering
- Plasma Diagnostics
- Particle Confinement Studies
Background:
- The Mega Ampere Spherical Tokamak (MAST) Upgrade requires advanced diagnostics for detailed plasma analysis.
- Understanding fast ion confinement and non-inductive current drive is critical for future fusion reactors.
Purpose of the Study:
- To detail the design, engineering, and performance of the Neutron Camera Upgrade (NCU).
- To evaluate the NCU's capability in measuring neutron emissivity profiles for fusion plasma studies.
Main Methods:
- Installation of a six-line-of-sight neutron flux monitor (NCU) on the MAST Upgrade.
- Characterization of neutron detectors using gamma-ray and Californium-252 sources.
- Analysis of design criteria, engineering, and interfacing solutions for the NCU system.
Main Results:
- The NCU achieves a time resolution of 1 ms and spatial resolution of 10 cm.
- Statistical uncertainty is below 10% for all MAST Upgrade scenarios.
- Neutron detectors demonstrate energy resolution better than 10% and satisfactory pulse shape discrimination.
Conclusions:
- The NCU is a well-characterized diagnostic system ready for installation on MAST Upgrade.
- The NCU will provide essential data for fast ion confinement and current drive efficiency studies.
- The achieved performance metrics meet the requirements for advanced tokamak plasma diagnostics.
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