Skip to main content

News about Scitation

In December 2016 Scitation will launch with a new design, enhanced navigation and a much improved user experience.

To ensure a smooth transition, from today, we are temporarily stopping new account registration and single article purchases. If you already have an account you can continue to use the site as normal.

For help or more information please visit our FAQs.

banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.
H. Zohm, Plasma Phys. Controlled Fusion 38, 105 (1996).
R. Scannell, M. Walsh, M. Dunstan, J. Figueiredo, G. Naylor, T. O’Gorman, S. Shibaev, K. Gibson, and H. Wilson, Rev. Sci. Instrum. 81, 10D520 (2010).
B. LeBlanc, A. Diallo, G. Labik, and D. Stevens, Rev. Sci. Instrum. 83, 10D527 (2012).
B. S. Victor, C. T. Holcomb, S. L. Allen, W. H. Meyer, M. A. Makowski, and A. Thorman, Rev. Sci. Instrum. 87, 11E126 (2016).
E. Viezzer, R. Dux, M. G. Dunne, and ASDEX Upgrade Team, Rev. Sci. Instrum. 87, 11E528 (2016).
O. Meneghini and F. A. Volpe, Rev. Sci. Instrum. 87, 11E120 (2016).
M. Ryle and A. Hewish, Mon. Not. R. Astron. Soc. 120, 220 (1960).
M. Ryle, Nature 239, 435 (1972).
A. Thompson, J. Moran, and G. Swenson, Jr., Interferometry and Synthesis in Radio Astronomy (John Wiley & Sons, 2008).
E. Holzhauer, M. Hirsch, T. Grossmann, B. Brañas, and F. Serra, Plasma Phys. Controlled Fusion 40, 1869 (1998).
D. Thomas, K. Brunner, S. Freethy, B. Huang, V. Shevchenko, and R. Vann, Nucl. Fusion 56, 026013 (2016).
V. F. Shevchenko, R. G. Vann, S. J. Freethy, and B. K. Huang, J. Instrum. 7, P10016 (2012).
S. Freethy, V. Shevchenko, and R. Vann, IEEE Trans. Antennas Propag. 60, 5442 (2012).
B. Huang et al., Fusion Eng. Des. 87, 2106 (2012).
K. Brunner, J. Chorley, N. Dipper, G. Naylor, R. Sharples, G. Taylor, D. Thomas, and R. Vann, Rev. Sci. Instrum. 87, 11E129 (2016).
J. Chorley, R. Akers, K. Brunner, N. Dipper, S. J. Freethy, R. Sharples, V. Shevchenko, D. A. Thomas, and R. G. Vann, Fusion Sci. Technol. 69, 643 (2016).
I. Chapman et al., Nucl. Fusion 55, 104008 (2015).
S. Freethy, B. Huang, V. Shevchenko, and R. Vann, Plasma Phys. Controlled Fusion 55, 124010 (2013).
S. Freethy, K. McClements, S. C. Chapman, R. Dendy, W. Lai, S. Pamela, V. F. Shevchenko, and R. Vann, Phys. Rev. Lett. 114, 125004 (2015).
J. Menard et al., Nucl. Fusion 52, 083015 (2012).

Data & Media loading...


Article metrics loading...



The Synthetic Aperture Microwave Imaging (SAMI) system is a novel diagnostic consisting of an array of 8 independently phased antennas. At any one time, SAMI operates at one of the 16 frequencies in the range 10-34.5 GHz. The imaging beam is steered in software post-shot to create a picture of the entire emission surface. In SAMI’s active probing mode of operation, the plasma edge is illuminated with a monochromatic source and SAMI reconstructs an image of the Doppler back-scattered (DBS) signal. By assuming that density fluctuations are extended along magnetic field lines, and knowing that the strongest back-scattered signals are directed perpendicular to the density fluctuations, SAMI’s 2-D DBS imaging capability can be used to measure the pitch of the edge magnetic field. In this paper, we present preliminary pitch angle measurements obtained by SAMI on the Mega Amp Spherical Tokamak (MAST) at Culham Centre for Fusion Energy and on the National Spherical Torus Experiment Upgrade at Princeton Plasma Physics Laboratory. The results demonstrate encouraging agreement between SAMI and other independent measurements.


Full text loading...


Access Key

  • FFree Content
  • OAOpen Access Content
  • SSubscribed Content
  • TFree Trial Content
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd