2019
DOI: 10.1051/epjconf/201920303003
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Progress in ITER ECE Diagnostic Design and Integration

Abstract: The ITER Electron Cyclotron Emission (ECE) diagnostic is progressing towards its Preliminary Design Review (PDR). In parallel, the diagnostic integration in the Equatorial Port is ongoing. Port Integration has to address the structural integrity to withstand various loads, maintenance and the safety aspects of ECE diagnostic. The ITER ECE system includes radial and oblique lines-of-sight. Recently, a successful peer-review of the in-port plug Hot Calibration Source has taken place and its performance and integ… Show more

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Cited by 9 publications
(9 citation statements)
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“…The design, research and development of the ITER ECE diagnostic system have progressed very well since the last progress updates presented [2]. The preliminary design review on the transmission line, the Fourier transform spectrometer, and the low-frequency radiometer has been completed and is near closure.…”
Section: Discussionmentioning
confidence: 99%
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“…The design, research and development of the ITER ECE diagnostic system have progressed very well since the last progress updates presented [2]. The preliminary design review on the transmission line, the Fourier transform spectrometer, and the low-frequency radiometer has been completed and is near closure.…”
Section: Discussionmentioning
confidence: 99%
“…The ITER electron cyclotron emission (ECE) diagnostic system [1,2] has primary roles in providing measurements of the core electron temperature profile and the electron temperature fluctuation associated with neoclassical tearing mode (NTM) instabilities. Together with the Thomson scattering systems [3], they are adequate to provide the core electron temperature profile with specifications that meet the requirements from the perspective of plasma control and physics studies.…”
Section: Introductionmentioning
confidence: 99%
“…Trapped UH wave PDIs in the ITER full-field scenarios may create strong microwave signals with frequency shifts ∼ 10 GHz from f 0 = 170 GHz [1]. This makes them a potential risk to the ITER electron cyclotron emission (ECE) and low-field side reflectometer systems, operating in the frequency ranges 70−1000 GHz [67,68] and 30−165 GHz [69], respectively. PDIs involving a significant amount of X-mode ECRH power reflected from the high-field side wall reaching the UHR are unlikely to occur in the fullfield ITER scenario, as the fundamental ECR is located close to the plasma center and therefore expected to be optically thick for the O-mode ECRH waves [61].…”
Section: Potential O-mode Ecrh Pdi Scenarios At Itermentioning
confidence: 99%
“…This means that 110 GHz and 104 GHz ECRH waves are also likely to drive PDIs involving decay of the O-mode ECRH waves into trapped UH waves and low-frequency lower hybrid waves in regions allowing UH wave trapping on the highfield side in ITER half-field scenarios. Such trapped UH wave PDIs would again pose a risk to the ECE [67,68] and low-field side reflectometer [69] systems at ITER. Operation with pellet fueling above n G e would allow the trapped UH wave PDIs to occur near the plasma center and on the low-field side in addition to the high-field side; once again, the requirement of n e < n G e at the plasma edge means that there will always be some point with R < R 0 + a at which f 0 = f UH in stable plasmas.…”
Section: Potential O-mode Ecrh Pdi Scenarios At Itermentioning
confidence: 99%
“…In ITER, the electron cyclotron emission (ECE) diagnostic [1] will be used to determine the plasma electron temperature, plasma energy, ECE radiated power and runaway electrons in the frequency range 70 GHz -1 THz by measuring the cyclotron radiation. The typical ECE system consists of front end optics including in-situ calibration sources, a set of transmission lines (TLs), and ECE radiation measurement instruments like radiometers and Michelson interferometers.…”
Section: Introductionmentioning
confidence: 99%