Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Garrard Conway"'
Publikováno v:
Nuclear Fusion
Geodesic acoustic modes (GAMs) are ubiquitous oscillatory flow phenomena observed in toroidal magnetic confinement fusion plasmas, such as tokamaks and stellarators. They are recognized as the non-stationary branch of the turbulence driven zonal flow
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f010e282a9c55ea7c93e048555a475aa
https://hdl.handle.net/21.11116/0000-0009-A549-B21.11116/0000-0009-A54B-9
https://hdl.handle.net/21.11116/0000-0009-A549-B21.11116/0000-0009-A54B-9
Autor:
Christian Koenen, Ulrich Stroth, Hans-Ulrich Nickel, Garrard Conway, Thomas F. Eibert, Uwe Siart, Gerhard F. Hamberger
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques
The design and performance of a broadband and low-reflectivity millimeter-wave vacuum window for rectangular hollow waveguides are presented. A reflectivity below −15 dB is achieved over almost the full ${W}$ -band. The vacuum window is sufficientl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f8416430462f7f5084e562e0b07060a2
https://doi.org/10.1109/tmtt.2017.2740171
https://doi.org/10.1109/tmtt.2017.2740171
Publikováno v:
Nuclear Fusion
To make predictions for and design fusion reactors, a multitude of physical processes must be considered. In the edge and scrape-off layer (SOL), turbulent fluctuations intertwine with the plasma background, which is largely determined by neutral gas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f39b86364833aa6ccea6550a43e0cc4
https://doi.org/10.1088/1741-4326/ac1e61
https://doi.org/10.1088/1741-4326/ac1e61
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques
In order to realize series-fed millimeter-wave hollow waveguide array antennas, small slots or holes can be used to couple a defined amount of power from the main feed line to the radiating elements. Due to the small size of these structures, they ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4ec64e5c61916a609341c74e07821d9
https://doi.org/10.1109/tmtt.2015.2495189
https://doi.org/10.1109/tmtt.2015.2495189
Publikováno v:
IEEE Microwave and Wireless Components Letters
The design of a WR10 waveguide coupling structure is presented. Electrically, it consists of an $E$ -plane (series) T-junction and a quarter-wave section. The resulting coupling factor is nearly constant over the entire ${W}$ -band. A milled split-bl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::034febfbfc11a791c886e23ca77eb472
https://doi.org/10.1109/lmwc.2017.2690820
https://doi.org/10.1109/lmwc.2017.2690820
Autor:
Garrard Conway, S. S. Denk, A.J. Creely, Simon Freethy, Christian Koenen, Anne White, T. Happel, Pascale Henniquin, Tobias Görler
Publikováno v:
20th Joint Workshop on Electron Cyclotron Emission and Resonance Heating (EC-20)
20th Joint Workshop on Electron Cyclotron Emission and Resonance Heating (EC-20), May 2018, Greifswald, Germany
EPJ Web of Conferences, Vol 203, p 03001 (2019)
EPJ Web of Conferences
20th Joint Workshop on Electron Cyclotron Emission and Resonance Heating (EC-20), May 2018, Greifswald, Germany
EPJ Web of Conferences, Vol 203, p 03001 (2019)
EPJ Web of Conferences
Guided by predictions from nonlinear gyrokinetic simulations, two new turbulence diagnostics were designed and installed at ASDEX Upgrade (AUG) to probe the fundamentals of ion-scale turbulent electron heat transport. The first, a 30-channel correlat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d9586837fd8dee957c7ffec331d9374b
https://hal.archives-ouvertes.fr/hal-02346027
https://hal.archives-ouvertes.fr/hal-02346027
Publikováno v:
EPJ Web of Conferences, Vol 187, p 01012 (2018)
EPJ Web of Conferences
EPJ Web of Conferences
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb7d66373a2e84bd6a52a206a96678ef
https://doaj.org/article/0f14a5dded004db88b8428e216900593
https://doaj.org/article/0f14a5dded004db88b8428e216900593
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques
A sliding short for millimeter-wave rectangular waveguides and its dedicated application in a reflection-type phase shifter are presented. The design of the sliding short has self-aligning properties, where the correct and stable positioning of the s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74498c024e6d8b2d8061de0a577422be
https://hdl.handle.net/11858/00-001M-0000-002C-E2BD-711858/00-001M-0000-002C-E2BB-B21.11116/0000-0000-F075-D
https://hdl.handle.net/11858/00-001M-0000-002C-E2BD-711858/00-001M-0000-002C-E2BB-B21.11116/0000-0000-F075-D
Publikováno v:
2016 IEEE International Symposium on Phased Array Systems and Technology (PAST).
A millimeter-wave phased array antenna for Doppler reflectometry within the ASDEX Upgrade tokamak experiment is presented. The antenna radiates a well defined Gaussian beam over almost the whole W-band (75 to 105 GHz). The crucial feed components (ph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32525a21668286a0000c08df1b85d9ed
https://doi.org/10.1109/array.2016.7832567
https://doi.org/10.1109/array.2016.7832567
Autor:
Sibylle Günter, M. Maraschek, K. Sassenberg, F. Serra, Garrard Conway, D. Borba, S. da Graca, M. E. Manso, L. Cupido, Philipp Lauber
Publikováno v:
Plasma Physics and Controlled Fusion
The radial structure of toroidal Alfven eigenmodes (TAEs) is of great importance for comparison with theoretical predictions. A dual-channel fast frequency hopping millimeter-wave reflectometer installed on the ASDEX Upgrade tokamak is capable of mea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d0b6a4b0012d86f99eb714571064c98f
https://doi.org/10.1088/0741-3335/49/11/007
https://doi.org/10.1088/0741-3335/49/11/007