155 lines
3.9 KiB
Markdown
155 lines
3.9 KiB
Markdown
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---
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title: GRAY user manual
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author:
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- D. Farina[^1]
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- L. Figini[^1]
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- A. Mariani[^1]
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- M. Guerini Rocco[^2]
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date: 'November 30, 2012. Updated: November 30, 2021'
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lang: en-GB
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language: english
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# Bibliography
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link-citations: true
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citation-style: res/style.csl
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reference-section-title: Bibliography
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references:
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- id: gray
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title: 'A quasi-optical beam-tracing code for electron cyclotron
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absorption and current drive: GRAY'
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author:
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- family: Farina
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given: D.
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container-title: Fusion Science and Technology
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doi: 10.13182/fst07-a1494
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issue: 2
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issued: 2007-08
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page: 154-160
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publisher: Informa UK Limited
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type: article-journal
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volume: 52
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- id: gaussian-beam
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title: 'Gaussian light beams with general astigmatism'
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author:
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- family: Arnaud
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given: J. A.
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- family: Kogelnik
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given: H.
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container-title: Applied Optics
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doi: 10.1364/ao.8.001687
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issue: 8
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issued: 1969-08
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page: 1687
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publisher: The Optical Society
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type: article-journal
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volume: 8
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- id: cocos
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title: 'Tokamak coordinate conventions: COCOS'
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author:
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- family: Sauter
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given: O.
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- family: Medvedev
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given: S.Yu.
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container-title: Computer Physics Communications
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doi: 10.1016/j.cpc.2012.09.010
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issue: 2
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issued: 2013-02
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page: 293-302
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publisher: Elsevier BV
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type: article-journal
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volume: 184
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- id: marushchenko
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title: 'Current drive calculations with an advanced adjoint approach'
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author:
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- family: Marushchenko
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given: N. B.
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- family: Beidler
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given: C. D.
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- family: Maassberg
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given: H.
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container-title: Fusion Science and Technology
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doi: 10.13182/fst55-180
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issue: 2
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issued: 2009-02
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page: 180-187
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publisher: Informa UK Limited
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type: article-journal
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volume: 55
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- id: dispersion
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title: 'Relativistic dispersion relation of electron cyclotron waves'
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author:
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- family: Farina
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given: Daniela
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container-title: Fusion Science and Technology
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doi: 10.13182/fst08-a1660
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issue: 1
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issued: 2008-01
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page: 130-138
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publisher: Informa UK Limited
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type: article-journal
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volume: 53
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- id: angles
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title: ???
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author:
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- family: Zvonkov
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given: A.
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- family: Gribov
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given: Y.
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- family: Bindslev
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given: H.
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issued: 2003-3-5, 2003-4-5
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# Font
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mainfont: Libertinus Serif
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mathfont: Libertinus Math
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monofont: Fira Mono
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# PDF output options
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classoptions:
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- a4paper
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- 14pt
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geometry:
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- top=2cm
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- bottom=2cm
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# HTML output options
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css: res/style.css
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# pandoc-crossref options
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linkReferences: true
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tableEqns: true
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...
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[^1]: Istituto per la Scienza e Tecnologia dei Plasmi,
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Consiglio Nazionale delle Ricerche
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Via R. Cozzi, 53 - 20125 Milano, Italy
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[^2]: Università degli Studi di Milano-Bicocca,
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Piazza dell'Ateneo Nuovo, 1 - 20126, Milano
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# Introduction
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The beam tracing code GRAY performs the computation of the quasi-optical
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propagation of a Gaussian beam of electron cyclotron waves in a general tokamak
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equilibrium, and of the power absorption and driven current [@gray].
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The propagation of a general astigmatic Gaussian beam is described within the
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framework of the complex eikonal approach in terms of a set of "extended" rays
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that allow for diffraction effects. The absorbed power and the driven current
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density are computed along each ray solving the fully relativistic dispersion
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relation for electron cyclotron wave and by means of the neoclassical response
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function for the current.
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The aim of the present note is to document the current version of the GRAY
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code, by describing the main code features and listing the inputs and outputs.
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To this goal in [@sec:physics] the main equations and models used in the GRAY
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code to compute Gaussian beam propagation, absorption and current drive are
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summarized shortly. In [@sec:io-files], the details on the code inputs and
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outputs are presented.
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