Results 31 to 40 of about 1,068 (190)

105-GHz Notch Filter Design for Collective Thomson Scattering [PDF]

Fusion Science and Technology, 2011
A millimeter-wave notch filter with 105-GHz center frequency, >20-GHz passband coverage, and 1-GHz rejection bandwidth has been constructed. The design is based on a fundamental rectangular waveguide with cylindrical cavities coupled by narrow iris gaps, i.e., small elongated holes of negligible thickness.
Furtula, Vedran, Michelsen, Poul, Leipold, Frank, Johansen, T., Korsholm, Søren Bang; id_orcid 0000-0001-7160-8361, Meo, Fernando, Moseev, Dmitry, Nielsen, Stefan Kragh, Salewski, Mirko; id_orcid 0000-0002-3699-679X, Stejner Pedersen, Morten   +9 more
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Recovering non-Maxwellian particle velocity distribution functions from collective Thomson-scattered spectra

AIP Advances, 2023
Collective optical Thomson scattering (TS) is a diagnostic commonly used to characterize plasma parameters. These parameters are typically extracted by a fitting algorithm that minimizes the difference between a measured scattered spectrum and an ...
B. C. Foo, D. B. Schaeffer, P. V. Heuer
doaj   +1 more source

Interaction of 0.53 μm laser pulse with millimeter-scale plasmas generated with gas-bag target

EPJ Web of Conferences, 2013
Reported are the interactions of 0.53 μm laser pulse with millimeter-scale plasmas that are produced with gas-bag target irradiated with 0.35 μm laser pulses.
Zheng Jian, Li Zhi-chao, Jiang Xiao-hua, Wang Zhe-bin, Zhao Bin, Hu Guang-yue, Yin Qiang, Wang Feng, Peng Xiao-shi, Zhu Fang-hua, Li San-wei, Yuan Zheng, Liu Yong-gang, Chen Li, Yuan Peng, Guo Liang, Liu Shen-ye, Ding Yong-kun   +17 more
doaj   +1 more source

Collision correction on collective Thomson scattering spectra and its application in inertial confinement fusion hohlraum plasmas [PDF]

Matter and Radiation at Extremes
Collective Thomson scattering (CTS) is crucial for inertial confinement fusion (ICF) hohlraum diagnostics, but measurement of the electron plasma wave (EPW) feature remains challenging.
Hang Zhao, Yaoyuan Liu, Zhichao Li, Tao Gong, Chaoxin Chen, Jianhua Zheng, Longyu Kuang, Xin Li, Kaiqiang Pan, Qi Li, Sanwei Li, Xuelong Qin, Liang Guo, Dong Yang   +13 more
doaj   +1 more source

Side emissions during EC injection for PDI studies in FTU tokamak [PDF]

EPJ Web of Conferences, 2019
The evidence of Parametric Decay Instabilities (PDI) excited by the ECH power injected in O-Mode has been explored in FTU Tokamak, using the Collective Thomson Scattering (CTS) diagnostic.
Bruschi Alessandro, Alessi Edoardo, Baiocchi Benedetta, Bin William, D’Arcangelo Ocleto, Fanale Francesco, Figini Lorenzo, Galperti Cristian, Garavaglia Saul, Gittini Giuseppe, Granucci Gustavo, Grosso Giovanni, Lubyako Lev, Mazzotta Cristina, Mellera Vittoria, Moro Alessandro, Orsitto Francesco, Pallotta Fabrizio, Rocchi Giuliano, Simonetto Alessandro, Tartari Umberto, Tudisco Onofrio   +21 more
doaj   +1 more source

Effects of relativistic electrons on the calculated collective Thomson scattered spectra [PDF]

Physical Review E, 1995
The effects of relativistic electrons on the spectral density function {ital S}({bold k},{omega}) are evaluated in the collective Thomson scattering regime for ion diagnostics. An electromagnetic code that calculates the electron density fluctuation term of {ital S}({bold k},{omega}) has been modified by treating the electrons with a relativistic ...
, Rhee, , Woskov, , Machuzak
openaire   +2 more sources

Collective Thomson scattering data analysis for Wendelstein 7-X [PDF]

, 2017
Collective Thomson scattering (CTS) diagnostic is being installed on the Wendelstein 7-X stellarator to measure the bulk ion temperature in the upcoming experimental campaign.
Wolf, RC, H.P. Laqua, R.C. Wolf, Cardozo, N.J. Lopes, Svensson, J., Lopes Cardozo, N.J., Salewski, Mirko, Laqua, H.P., N.J. Lopes Cardozo, Lopes Cardozo, N., Lopes Cardozo, NJ Niek, Moseev, D., Salewski, M., Laqua, HP, Wolf, R., Wolf, R.C., D. Moseev, Pavone, A., A. Pavone, Pavone, Andrea, Salewski, M, I. Abramovic, Moseev, D, Svensson, J, Laqua, H., M. Salewski, Abramovic, I Ivana, Abramovic, I., Laqua, H. P., J. Svensson   +29 more
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Collective Thomson scattering diagnostic with in situ calibration system for velocity space analysis in large helical device

, 2022
0000-0002-2752-3333A collective Thomson scattering (CTS) diagnostic with a ±3 GHz band around a 77 GHz gyrotron probe beam was developed to measure the velocity distribution of bulk and fast ions in high-temperature plasmas.
Masaki Nishiura, Hideo Nuga, Teruo Saito, Ryoma Yanai, Takashi Shimozuma, KENMOCHI, Naoki, YANAI, Ryoma, Shin Kubo, ADACHI, Shun, SAITO, Teruo, Kenji Tanaka, Naoki Kenmochi, SHIMOZUMA, Takashi, Ryosuke Seki, SEKI, Ryosuke, YANAI, Ryohma, KUBO, Shin, NUGA, Hideo, TANAKA, Kenji, Shun Adachi, NISHIURA, Masaki   +20 more
core   +1 more source

Design and development of the ITER CTS diagnostic [PDF]

EPJ Web of Conferences, 2019
The Collective Thomson Scattering (CTS) diagnostic will be a primary diagnostic for measuring the dynamics of the confined fusion born alpha particles in ITER and will be the only diagnostic for alphas below 1.7 MeV [1].
Korsholm Søren B., Gonçalves Bruno, Gutierrez Heidi E., Henriques Elsa, Infante Virginia, Jensen Thomas, Jessen Martin, Klinkby Esben B., Larsen Axel W., Leipold Frank, Lopes André, Luis Raul, Naulin Volker, Nielsen Stefan K., Nonbøl Erik, Rasmussen Jesper, Salewski Mirko, Stejner Morten, Taormina Arianna, Vale Alberto, Vidal Catarina, Sanchez Laura, Ballester Raul M., Udintsev Victor   +23 more
doaj   +1 more source

Mode-Converting Corrugations for Cavities of Second-Harmonic Gyrotrons with Improved Performance

East European Journal of Physics, 2021
A new method of improving mode selection in cavities of sub-terahertz second-harmonic gyrotrons is investigated. As an example, a second-harmonic gyrotron with frequency of 0.3 THz is considered. The gyrotron is designed for collective Thomson scattering
Tetiana Tkachova, Vitalii Shcherbinin, Viktor Tkachenko   +2 more
doaj   +1 more source