Calculated Collective Thomson Scattered Spectra from Energetic Ions in Tokamaks PDF Download
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Author: David Yoon Hee Rhee
Publisher:
ISBN:
Category :
Languages : en
Pages : 23
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Author: David Yoon Hee Rhee
Publisher:
ISBN:
Category :
Languages : en
Pages : 23
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 36
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This report summarizes the work performed under DOE grant DE-FG03-95ER54334. Lodestar was an active participant in the low power Collective Thomson Scattering (CTS) diagnostic experiment at TFTR in collaboration with MIT. A simple and effective fitting technique was developed to extract key parameters from the scattered data. Utilizing this new technique, the concept of lower hybrid resonance scattering was adapted for a feasibility study of a low/medium power collective scattering diagnostic for ITER. The implementation and the testing of such a technique for actual parameter extraction using TFTR data, however, was severely limited due to experimental and instrumentation complications. Based on the studies the authors have performed up to date, it is believed that a combination of non-physics related effects such as multiple wall reflection of incident signal and spectral impurity problem o the gyrotron can account for the anomalous signal strength. A collaborative effort with GA was initiated and a feasibility study of developing and implementing a collective thomson scattering (CTS) diagnostic for the detection of energetic particles at DIII-D was completed. Specifically, the process of selecting an optimum receiver location for the diagnostic is discussed in detailed. Results presented here include detailed signal to noise calculations and ray-tracing studies. Critical physics issues and selection criteria are discussed and a procedure to detect anisotropic energetic ion temperatures is also outlined. Favorable results, obtained in the feasibility study, indicate that it should be possible to develop and implement a CTS diagnostic at DIII-D.
Author: Jan Egedal Pedersen
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Category :
Languages : en
Pages : 0
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Category : Power resources
Languages : en
Pages : 444
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Category : Physics
Languages : en
Pages : 1094
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Category : Controlled fusion
Languages : en
Pages : 144
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Category : Aeronautics
Languages : en
Pages : 892
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Category : Nuclear energy
Languages : en
Pages : 1146
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Category : Controlled fusion
Languages : en
Pages : 862
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Category : Dissertations, Academic
Languages : en
Pages : 664
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