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Preliminary Results for Coded Aperture Plasma Diagnostic

Author: Magnus A Haw
Requested Type: Poster Only
Submitted: 2014-05-28 15:47:23

Co-authors: Paul Bellan

Contact Info:
Caltech
1200 E. California Blvd.
Pasadena, CA   91106
USA

Abstract Text:
A 1D coded aperture camera has been developed as a prototype for a high speed, wavelength-independent, plasma imaging diagnostic. Images are obtained via a coded or masked aperture that modulates incoming light to produce an invertible linear transform of the image on a detector. The system requires no lenses or mirrors and can be thought of as a multiplexed pinhole camera (with comparable resolution and greater signal than a single pinhole). The inexpensive custom-built system has a 13x1cm field of view, a vertical spatial resolution of 2mm, and a temporal resolution of 10ns. Visible light images of the Caltech MHD-driven jet experiment agree with simultaneous images obtained with a conventional camera. For the simple jet geometry, the system can also extract depth information from single images. Further work will revolve around improving shielding and acquiring X-ray and EUV scintillators for imaging in those wavelengths.
This work was supported by US DOE, NSF, NSERC.

Characterization: 4.0

Comments:

Workshop on Exploratory Topics in Plasma and Fusion Research (EPR) and US-Japan Compact Torus (CT) Workshop
August 5-8, 2014
Madison, Wisconsin

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