Modifications to the synthetic aperture microwave imaging diagnostic

Brunner, K. J.; Chorley, J. C.; Dipper, N. A.; Naylor, G.; Sharples, R. M.; Taylor, G.; Thomas, D. A.; Vann, R. G.  L.

doi:10.1063/1.4961283

Title: Modifications to the synthetic aperture microwave imaging diagnostic

Journal Article · Fri Sep 02 00:00:00 EDT 2016 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4961283· OSTI ID:1350951

^[1]; Chorley, J. C. ^[1]; Dipper, N. A. ^[1]; Naylor, G. ^[2];

^[1];

^[3]; Thomas, D. A. ^[4]; Vann, R. G. L. ^[5]

Durham Univ., Durham (United Kingdom)
Culham Centre for Fusion Energy, Abingdon (United Kingdom)
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Culham Centre for Fusion Energy, Abingdon (United Kingdom); York Plasma Institute - Univ. of York, York (United Kingdom)
York Plasma Institute–University of York, Heslington, York YO10 5DQ, United Kingdom

The synthetic aperture microwave imaging diagnostic has been operating on the MAST experiment since 2011. It has provided the first 2D images of B-X-O mode conversion windows and showed the feasibility of conducting 2D Doppler back-scattering experiments. The diagnostic heavily relies on field programmable gate arrays to conduct its work. Recent successes and newly gained experience with the diagnostic have led us to modify it. The enhancements will enable pitch angle profile measurements, O and X mode separation, and the continuous acquisition of 2D DBS data. Finally, the diagnostic has also been installed on the NSTX-U and is acquiring data since May 2016.

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Research Organization:: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-09CH11466

OSTI ID:: 1350951

Journal Information:: Review of Scientific Instruments, Vol. 87, Issue 11; 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 (11)

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GPU-Based Data Processing for 2-D Microwave Imaging on MAST Chorley, J. C.; Akers, R. J.; Brunner, K. J. Fusion Science and Technology, Vol. 69, Issue 3 https://doi.org/10.13182/FST15-188	journal	May 2016
Synthetic aperture microwave imaging with active probing for fusion plasma diagnostics Shevchenko, V. F.; Vann, R. G. L.; Freethy, S. J. Journal of Instrumentation, Vol. 7, Issue 10 https://doi.org/10.1088/1748-0221/7/10/P10016	journal	October 2012
Collisional Damping of Electron Bernstein Waves and its Mitigation by Evaporated Lithium Conditioning in Spherical-Tokamak Plasmas Diem, S. J.; Taylor, G.; Caughman, J. B. Physical Review Letters, Vol. 103, Issue 1 https://doi.org/10.1103/PhysRevLett.103.015002	journal	June 2009
Measurement of internal magnetic field pitch using Li pellet injection on TFTR (invited) Terry, J. L.; Marmar, E. S.; Howell, R. B. Review of Scientific Instruments, Vol. 61, Issue 10 https://doi.org/10.1063/1.1141775	journal	October 1990
2D Doppler backscattering using synthetic aperture microwave imaging of MAST edge plasmas Thomas, D. A.; Brunner, K. J.; Freethy, S. J. Nuclear Fusion, Vol. 56, Issue 2 https://doi.org/10.1088/0029-5515/56/2/026013	journal	January 2016
Preliminary measurements of the edge magnetic field pitch from 2-D Doppler backscattering in MAST and NSTX-U (invited) Vann, R. G. L.; Brunner, K. J.; Ellis, R. Review of Scientific Instruments, Vol. 87, Issue 11 https://doi.org/10.1063/1.4962253	journal	September 2016
Zeeman polarimetry measurement for edge current density determination using Li-beam probe on JT-60U Kamiya, K.; Fujita, T.; Kojima, A. Review of Scientific Instruments, Vol. 81, Issue 3 https://doi.org/10.1063/1.3309793	journal	March 2010
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