Design of a low frequency, density profile reflectometer system for the MAST-U spherical tokamak

被引：0

作者：

Rhodes, T. L. ^{[1
]}

Peebles, W. A. ^{[1
]}

Zeng, Lei ^{[1
]}

Hall-Chen, Valerian ^{[2
]}

Ronald, Kevin ^{[3
]}

Kubota, S. ^{[1
]}

Meng, Yusong ^{[4
]}

Lantsov, R. ^{[1
]}

Michael, C. M. ^{[1
]}

Crocker, N. A. ^{[1
]}

Scannell, R. ^{[5
]}

机构：

[1] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[2] ASTAR, Inst High Performance Comp, Singapore, Singapore

[3] Univ Strathclyde, Glasgow, Scotland

[4] ASTAR, NMC, Singapore, Singapore

[5] UKAEA, Culham Ctr Fus Energy, Culham, England

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2024年 / 95卷 / 08期

关键词：

ULTRASHORT-PULSE REFLECTOMETRY; RADAR REFLECTOMETER; MICROWAVE REFLECTOMETRY; MODULATION;

D O I：

10.1063/5.0219578

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Validated and accurate edge profiles (temperature, density, etc.) are vitally important to the Mega Ampere Spherical Tokamak Upgrade (MAST-U) divertor and confinement effort. Density profile reflectometry has the potential to significantly add to the measurement capabilities currently available on MAST-U (e.g., Thomson scattering and Langmuir probes). This work presents the diagnostic requirements, problems, and solutions facing profile reflectometry in spherical tokamaks and MAST-U in particular. Requirements include density measurements near zero electron density in the scrape off layer region, coverage for a broad range of MAST-U plasma parameters, high time (<= 10 microseconds) and spatial resolutions (<= 1 cm), reliability, and identification of the plasma start frequency.

引用

页数：6

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