Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Antonio C. Torrezan"'
Publikováno v:
Appl. Phys. Lett. 91, 204103 (2007)
In this work the authors implemented a resonator based upon microstrip cavities that permits the generation of microwaves with arbitrary polarization. Design, simulation, and implementation of the resonators were performed using standard printed circ
Externí odkaz:
http://arxiv.org/abs/0708.0777
Autor:
Yuri Gorelov, Paul Simmerling, Antonio C. Torrezan, David Su, Dan Ponce, Mirela Cengher, John Doane, Xi Chen, John Lohr
Publikováno v:
IEEE Transactions on Plasma Science. 48:1698-1702
The DIII-D electron cyclotron heating and current drive (ECH/ECCD) system has been operating with an annual average of 4268 individual gyrotron pulses into the plasma in the last four years and 3-3.6 MW average yearly power availability in the last t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::162d6f66161a5a1772e06fb7d2b1f12a
https://doi.org/10.1109/tps.2020.2978828
https://doi.org/10.1109/tps.2020.2978828
Autor:
Michael Brookman, J.G. Watkins, Kurt Zeller, Bruno Coriton, J.C. Rost, Taylor Raines, Daniel Geng, John Lohr, Huiqian Wang, J. Ren, Karl Schultz, Randy Nguyen, Antonio C. Torrezan, C.C. Petty, H. Torreblanca, C.J. Pawley, Charles P. Moeller, R.I. Pinsker, Miklos Porkolab, Dan Ponce, Bart Van Compernolle, A. Nagy, E.T. Hinson, Oliver Schmitz, Richard Kalling, A.M. Garofalo, Ray O’Neill, Jared Squire, Elijah Martin, Alessandro Marinoni
Publikováno v:
Nuclear Fusion. 61:116034
Helicon current drive (CD), also called fast wave CD in the lower hybrid range of frequencies, has long been regarded as a promising CD tool for reactor grade plasmas. A newly installed MW-level system at DIII-D will be the first test of this technol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c702babaa0258416a1a0b2d9bf587859
https://doi.org/10.1088/1741-4326/ac25c0
https://doi.org/10.1088/1741-4326/ac25c0
Autor:
John Lohr, Xi Chen, Yuri Gorelov, Antonio C. Torrezan, Mirela Cengher, R. Ellis, Dan Ponce, Charles P. Moeller
Publikováno v:
Fusion Engineering and Design. 123:295-298
The gyrotron complex on DIII-D has been updated and consists of six gyrotrons installed and routinely operating reliably for injection of up to 3.6 MW into the plasma. The eight sets of real time steerable mirrors that are installed on DIII-D inject
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a8f508290ba600e08fd3dfef1b06ec0
https://doi.org/10.1016/j.fusengdes.2017.05.022
https://doi.org/10.1016/j.fusengdes.2017.05.022
Autor:
John Lohr, Antonio C. Torrezan, Yuri Gorelov, Rigo Brambila, Dan Ponce, Mirela Cengher, W. H. Grosnickle
Publikováno v:
Fusion Science and Technology. 73:1-4
An imminent gyrotron body current fault can now be detected and avoided in less than 10 µs using a high-resolution, real-time, high-voltage reference waveform generator with signal analyzer subroutines. The gyrotron is restarted and full power resum
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ab2316522daf0cef8df25694b76fe7d
https://doi.org/10.1080/15361055.2017.1387009
https://doi.org/10.1080/15361055.2017.1387009
Autor:
Dan Ponce, Yuri Gorelov, Xi Chen, Antonio C. Torrezan, Charles P. Moeller, Mirela Cengher, John Lohr
Publikováno v:
IEEE Transactions on Plasma Science. 44:3465-3470
The DIII-D electron cyclotron heating (ECH) system consists of six 110-GHz gyrotrons with corrugated coaxial 31.75-mm waveguide transmission lines, and steerable launching mirrors. The system has been gradually updated, leading to an increased experi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13c7d11931f78b7d94e7d54f85f6191c
https://doi.org/10.1109/tps.2016.2571219
https://doi.org/10.1109/tps.2016.2571219
Autor:
Paul G. Kotula, Byung Joon Choi, Andrew J. Lohn, Matthew J. Marinella, R. Stanley Williams, Antonio C. Torrezan, Jianhua Yang, John Paul Strachan, Zhiyong Li
Publikováno v:
Advanced Functional Materials. 26:5290-5296
High-performance memristors based on AlN films have been demonstrated, which exhibit ultrafast ON/OFF switching times (≈85 ps for microdevices with waveguide) and relatively low switching current (≈15 μA for 50 nm devices). Physical characteriza
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32886afd93e8ec6d8736b3f238290c69
https://doi.org/10.1002/adfm.201600680
https://doi.org/10.1002/adfm.201600680
Publikováno v:
2017 42nd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
A new real time control system is being installed on the Electron Cyclotron (EC) heating system at the DIII-D tokamak, which opens new possibilities for plasma experiments while increasing the gyrotron system reliability. The control system allows re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58181a4af255d8624649e98a87ae2235
https://doi.org/10.1109/irmmw-thz.2017.8066851
https://doi.org/10.1109/irmmw-thz.2017.8066851
Autor:
John Lohr, Rigoberto Brambila, Kevin Felch, M. Blank, Lawrence Ives, Yuri Gorelov, Claudia Parisuaña, Michael D. Reed, Dan Ponce, Charles P. Moeller, Antonio C. Torrezan, W. H. Grosnickle, Alexandra LeViness, Mirela Cengher
Publikováno v:
EPJ Web of Conferences, Vol 149, p 01006 (2017)
The ECH system on DIII-D is continuing to be upgraded, while simultaneously being operated nearly daily for plasma experiments. The latest major hardware addition is a new 117.5 GHz gyrotron, which generated 1.7 MW for short pulses during factory tes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c39516624db6bc326d3be10177557f2
https://doaj.org/article/66f3453fabc84a918dfb552288e0c43e
https://doaj.org/article/66f3453fabc84a918dfb552288e0c43e
Autor:
Gilberto Medeiros-Ribeiro, Antonio C. Torrezan, R.S. Williams, John Paul Strachan, Matthew D. Pickett, Wei Yi, Jianhua Yang, Feng Miao
Publikováno v:
IEEE Transactions on Electron Devices. 60:2194-2202
A key requirement for using memristors in circuits is a predictive model for device behavior that can be used in simulations and to guide designs. We analyze one of the most promising materials, tantalum oxide, for high density, low power, and high-s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2c52b89947fef82d1a7232d78040f6b
https://doi.org/10.1109/ted.2013.2264476
https://doi.org/10.1109/ted.2013.2264476