2021
DOI: 10.1016/j.fusengdes.2020.112205
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Design improvements, assembly and testing of the ICRH antenna for W7-X

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Cited by 10 publications
(7 citation statements)
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“…The ICRH antenna in W7-X will be in use for Operational Phase 2.1 (OP2.1) [10]. It is designed for up to 1.5 MW of RF power at 25.0 MHz to 37.5 MHz frequencies, transferred to the plasma via two antenna straps.…”
Section: Icrh Heating In W7-xmentioning
confidence: 99%
See 1 more Smart Citation
“…The ICRH antenna in W7-X will be in use for Operational Phase 2.1 (OP2.1) [10]. It is designed for up to 1.5 MW of RF power at 25.0 MHz to 37.5 MHz frequencies, transferred to the plasma via two antenna straps.…”
Section: Icrh Heating In W7-xmentioning
confidence: 99%
“…The water cooled limiter tiles are designed to withstand high power loads of 2 MW m −2 from both the thermal bulk plasma and fast ions and protect the sensitive straps from excess heat loads. The straps can withstand 100 kW m −2 plasma radiation and 100 kW RF resistive power, while the stainless steel antenna box is designed for loads less than 100 kW m −2 [10]. All of these safety limits are estimates for steady-state operation of up to 30 min.…”
Section: Icrh Heating In W7-xmentioning
confidence: 99%
“…NBI-startup in W7-X has been shown to be not possible due to beam dump thermal limits of roughly 500 ms unattenuated shine through [3]. With the installation of an Ion Cyclotron Resonance Heating (ICRH) antenna in W7-X, a non-resonant ICRH startup scenario should be possible [4,5]. It is envisioned that such a plasma can be overtaken by NBI allowing achievement finite beta plasmas without the need for an ECRH resonance in the plasma.…”
Section: Introductionmentioning
confidence: 99%
“…The optimized superconducting stellarator device Wendelstein 7-X (W7-X) in Greifswald, Germany, is the first HELIAS machine that aims to demonstrate that power plant requirements can be achieved in a stellarator [1]. The W7-X has several heating systems: tthe electron-cyclotron resonance heating (ECRH) [2], the neutral beam injection (NBI) [3] and the ion-cyclotron resonance heating (ICRH) [4,5]. The regular magnetic field of W7-X that fits to X2 ECRH is 2.5 T. The operation of W7-X at the magnetic field of 1.7 T is possible with usage of 3rd harmonic ECRH (X3-mode).…”
Section: Introductionmentioning
confidence: 99%
“…The experimental [6] studies and the theory [7] show a need to create a target plasma for X3-mode ECRH. The initial plasma can be created by radio-frequency ICRF system in the ion-cyclotron resonance range on W7-X [4,5], possibly with an intermediate heating step by NBI.…”
Section: Introductionmentioning
confidence: 99%