Zobrazeno 1 - 10
of 159
pro vyhledávání: '"Robert Barchfeld"'
Autor:
Walter Guttenfelder, D J Battaglia, Elena Belova, Nicola Bertelli, Mark D Boyer, Choong Seock Chang, Ahmed Diallo, Vinicius N Duarte, Fatima Ebrahimi, Eric Emdee, N Ferraro, Eric Fredrickson, Nikolai N Gorelenkov, William W Heidbrink, Zeki Ilhan, Stanley M Kaye, Eun-Hwa Kim, Andreas Kleiner, Florian M. Laggner, Mate Lampert, Jeff Lestz, Chang Liu, Deyong Liu, Tom Looby, Noah Mandell, Rajesh Maingi, James R Myra, Stefano Munaretto, Mario Podesta, Tariq Rafiq, Roger Raman, Matthew Reinke, Yang Ren, Juan Ruiz Ruiz, Filippo Scotti, Syun'ichi Shiraiwa, Vlad Soukhanovskii, Patrick Vail, Zhirui Wang, Will P Wehner, Anne E White, Roscoe B White, Benjamin J Q Woods, James Yang, Stewart Zweben, Santanu Banerjee, Robert Barchfeld, Ronald E Bell, John Berkery, Amitawa Bhattacharjee, Andreas Bierwage, Gustavo Paganini Canal, Xiang Chen, Cesar Fernando Clauser, Neal A Crocker, C W Domier, Todd E Evans, Manaure Francisquez, Kaifu Gan, Stefan P Gerhardt, Robert James Goldston, Travis K Gray, Ammar Hakim, Gregory W Hammett, Stephen C Jardin, Robert Kaita, Bruce E Koel, Egemen Kolemen, Seung-Hoe Ku, Shigeyuki Kubota, Benoit P LeBlanc, Fred Levinton, Jeremy D Lore, Neville C Luhmann, R. Lunsford, Ricardo Maqueda, Jonathan E Menard, Jacob H Nichols, Masayuki Ono, Jong-Kyu Park, Francesca M Poli, Terry L Rhodes, Juan Riquezes, Dave A Russell, Steve A Sabbagh, Eugenio Schuster, David Smith, Daren P Stotler, Brentley Stratton, Kevin Tritz, Weixing Wang, Brian D Wirth
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
The mission of the low aspect ratio spherical tokamak NSTX-U is to advance the physics basis and technical solutions required for optimizing the configuration of next-step steady-state tokamak fusion devices. NSTX-U will ultimately operate at up to 2
Autor:
John Atkinson, Calvin Domier, Anisullah Baig, Diana Gamzina, Logan Himes, Neville C. Luhmann, Takuji Kimura, Branko Popovic, Robert Barchfeld, Mark Field
Publikováno v:
IEEE Transactions on Electron Devices. 64:2390-2397
We report on hot test measurements of a wide-bandwidth, 220-GHz sheet beam traveling wave tube amplifier developed under the Defense advanced research projects agency (DARPA) HiFIVE program. Nano-computer numerical control (CNC) milling techniques we
Autor:
Logan Himes, EunMi Choi, Claudio Paoloni, Branko Popovic, Neville C. Luhmann, Diana Gamzina, Robert Barchfeld, Yuan Zheng
Publikováno v:
IEEE Transactions on Electron Devices. 63:4067-4073
Nano-computer numerical control (CNC) machining technology is employed for the fabrication of sub-THz (100-1000 GHz) vacuum electron devices. Submicron feature tolerances and placement accuracy have been achieved and surface roughness of a few tens o
Autor:
Logan Himes, Pan Pan, Yuan Zheng, Mauro Mineo, Hanyan Li, Ye Tang, Branko Popovic, Claudio Paoloni, Jinjun Feng, Xiaopin Tang, Rosa Letizia, Diana Gamzina, Lingna Yue, Robert Barchfeld, Neville C. Luhmann
Publikováno v:
IEEE Transactions on Plasma Science. 44:369-376
Understanding of the anomalous transport attributed to short-scale length microturbulence through collective scattering diagnostics is key to the development of nuclear fusion energy. Signals in the subterahertz (THz) range (0.1–0.8 THz) with adequ
Autor:
Diana Gamzina, Hanyan Li, Xiang Li, Robert Barchfeld, Jinjun Feng, Rosa Letizia, Logan Himes, Claudio Paoloni, Ye Tang, Neville C. Luhmann, Pan Pan, Michelle Gonzalez, Branko Popovic
Nuclear fusion energy is perhaps one of the most demanding challenges that the scientific community is facing. Unfortunately, the plasma is affected by microturbulence, which is still not fully understood, but which can degrade plasma confinement. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6db5f3a0bbdc9a627137573f66c0c3d5
https://doi.org/10.1109/TED.2018.2821683
https://doi.org/10.1109/TED.2018.2821683
Autor:
Jinjun Feng, Rosa Letizia, Ye Tang, Robert Barchfeld, Hanyan Li, Pan Pan, Michelle Gonzales, Logan Himes, Diana Gamzina, Branko Popovic, Neville C. Luhmann, Yuan Zheng, Xiang Li, Claudio Paoloni
Publikováno v:
2018 IEEE International Vacuum Electronics Conference (IVEC).
The fabrication of slow wave structures for THz vacuum electronic devices presents substantial technology challenges and requires tight tolerances as the frequency increases. The fabrication of the 0.346 THz backward wave oscillator for plasma diagno
Autor:
Pan Pan, Jinjun Feng, Rosa Letizia, Hanyan Li, Diana Gamzina, Robert Barchfeld, Claudio Paoloni, Xiang Li, Xuejiao Huang, Branko Popovic, Logan Himes, Neville C. Luhmann, Ye Tang
Publikováno v:
2017 Eighteenth International Vacuum Electronics Conference (IVEC).
Nuclear fusion is probably the most demanding challenge the scientific community is facing. The plasma is a delicate material that has to be properly shaped to achieve a high efficiency fusion process. Unfortunately, the plasma is affected by micro-t
Autor:
Robert Kaita, Paul Riemenschneider, Robert Barchfeld, Nicole Allen, Neville C. Luhmann, B. Stratton, Jon Dannenberg, Yang Ren, Robert Ellis, Calvin Domier, Yilun Zhu
Publikováno v:
Review of Scientific Instruments. 89:10C114
An 8-channel, high-k poloidal far-infrared (FIR) scattering system is under development for the National Spherical Torus eXperiment Upgrade (NSTX-U). The 693 GHz poloidal scattering system replaces a 5-channel, 280 GHz high-k toroidal scattering syst
Autor:
Jinjun Feng, Rosa Letizia, Robert Barchfeld, Jun Zhang, Xiang Li, Branko Popovic, Pan Pan, Logan Himes, Ye Tang, Robert Waring, Hanyan Li, Neville C. Luhmann, Diana Gamzina, Claudio Paoloni
Publikováno v:
2016 41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz).
An international consortium including the University of California, Davis (UC Davis), Beijing Vacuum Electronics Research Institute (BVERI), and Lancaster University is involved in the design and fabrication of 0.346 THz BWOs to replace the bulky FIR
Publikováno v:
2016 IEEE International Vacuum Electronics Conference (IVEC).
Research conducted in parallel with the construction of various vacuum electronic devices, including a 220 GHz Sheet Beam Traveling Wave Tube (SBTWT), a 263 GHz SBTWT, and two 346 GHz Backward Wave Oscillators (BWOs), has demonstrated that data garne