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poster_epr_kbchai.pdf2013-02-21 13:06:44K. B. Chai
development_of_euv_imaging_diagnostic_epr.pdf2013-02-21 12:55:31K. B. Chai

Development of a fast EUV movie camera for Caltech spheromak jet experiments

Author: K. B. Chai
Requested Type: Poster Only
Submitted: 2012-12-04 19:18:45

Co-authors: Paul M. Bellan

Contact Info:
1200 E. California Blvd.
Pasadena, CA   91125

Abstract Text:
The Caltech spheromak jet experiment is relevant to spheromak formation and to astrophysical jets. The plasma jet starts as eight flux tubes and then merges into a single magnetically driven collimated jet. The jet undergoes a kink instability as it stretches its length and a Rayleigh-Taylor instability which can reduce the plasma diameter to a small scale to allow magnetic reconnection [1]. It has been observed that there are highly transient EUV emissions when there is magnetic reconnection [1]. The first EUV peak occurs when the flux tubes merge and the second one occurs when a Rayleigh-Taylor instability causes the jet to break off from its source electrode. In order to understand magnetic reconnection further we are developing a high speed EUV movie camera that will measure the spatial and temporal behaviors of EUV bursts associated with magnetic reconnection. The camera consists of a fast decaying crystal scintillator, a focusing mirror, and an ultra fast framing camera. Details of the diagnostic and test results from actual plasmas will be presented.

[1] A. L. Moser and P. M. Bellan, Nature 482, 379 (2012).

Characterization: 4.0


University of Texas

Workshop on Exploratory Topics in Plasma and Fusion Research (EPR2013)
February 12-15, 2013
Fort Worth, Texas

EPR 2013