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Journal Article
by Wolf, R.C and Ali, A and Alonso, A and Baldzuhn, J and Beidler, C and Beurskens, M and Biedermann, C and Bosch, H.S and Bozhenkov, S and Brakel, R and Dinklage, A and Feng, Y and Fuchert, G and Geiger, J and Grulke, O and Helander, P and Hirsch, M and Höfel, U and Jakubowski, M and Knauer, J and Kocsis, G and König, R and Kornejew, P and Kràmer-Flecken, A and Krychowiak, M and Laneman, M and Langenberg, A and Laqua, H. P and Lazerson, S and Maaßberg, H and Marsen, S and Marushchenko, M and Moseev, D and Niemann, H and Pablant, N and Pasch, E and Rahbarnia, K and Schlisio, G and Stange, T and Sunn Pedersen, T and Svensson, J and Szepesi, T and Trimino Mora, H and Turkin, Y and Wauters, T and Weir, G and Wenzel, U and Windisch, T and Wurden, G and Zhang, D and Abramovic, I and Äkàslompolo, S and Aleynikov, P and Aleynikova, K and Alzbutas, R and Anda, G and Aneeva, T and Ascasibar, E and Assmann, J and Baek, S. G and Banduch, M and Barbui, T and Barlak, M and Baumann, K and Behr, W and Benndorf, A and Bertuch, O and Biel, W and Birus, D and Blackwell, B and Blanco, E and Blatzheim, M and Bluhm, T and Böckenhoff, D and Bolgert, P and Borchardt, M and Borsuk, V and Boscary, J and Böttger, L. G and Brand, H and Brandt, Ch and Bràuer, T and Braune, H and Brezinsek, S and Brunner, K. J and Brünner, B and Burhenn, R and Buttenschön, B and Bykov, V and Calvo, I and Cannas, B and Cappa, A and Carls, A and Carraro, L and Carvalho, B and Castejon, F and Charl, A and Chernyshev, F and Cianciosa, M and Citarella, R and ... and Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States) and Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States) and Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Nuclear Fusion, ISSN 0029-5515, 07/2017, Volume 57, Issue 10, p. 102020
After completing the main construction phase of Wendelstein 7-X (W7-X) and successfully commissioning the device, first plasma operation started at the end of... 
Condensed Matter Physics | magnetic confinement | Nuclear and High Energy Physics | plasma heating | stellarator | current drive | TRANSPORT | PHYSICS, FLUIDS & PLASMAS | CONFINEMENT | PHYSICS | Magnetic Fusion Energy | 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Journal Article
by Krychowiak, M and Adnan, A and Alonso, A and Aneeva, T and Baldzuhn, J and Barbui, T and Beurskens, Marc N.A and Biel, W and Biedermann, C and Blackwell, B.D and Bosch, H.S and Bozhenkov, S and Brakel, R and Bräuer, T and Brotas de Carvalho, B and Burhenn, R and Buttenschön, B and Cappa, A and Cseh, G and Czarnecka, A and Dinklage, A and ws, P and Dzikowicka, A and Effenberg, F and Endler, M and Erckmann, V and Estrada, T and Ford, O and Fornal, T and Frerichs, H and Fuchert, G and Geiger, J and Grulke, O and Harris, J.H and Hartfuß, H.J and Hartmann, D and Hathiramani, D and Hirsch, M and Höfel, U and Jabłoński, S and Jakubowski, M.W and Kaczmarczyk, J and Klinger, T and Klose, S and Knauer, J and Kocsis, G and König, R and Kornejew, P and Krämer-Flecken, A and Krawczyk, N and Kremeyer, T and Ksiazek, I and Kubkowska, M and Langenberg, A and Laqua, H.P and Laux, M and Lazerson, S and Liang, Y and Liu, S.C and Lorenz, A and Marchuk, A.O and Marsen, S and Moncada, V and Naujoks, D and Neilson, H and Neubauer, O and Neuner, U and Niemann, H and Oosterbeek, J.W and Otte, M and Pablant, N and Pasch, E and Sunn Pedersen, T and Pisano, F and Rahbarnia, K and Ryć, L and Schmitz, O and Schmuck, S and Schneider, W and Schröder, T and Schuhmacher, H and Schweer, B and Standley, B and Stange, T and Stephey, L and Svensson, J and Szabolics, T and Szepesi, T and Thomsen, H and Travère, J.M and Trimino Mora, H and Tsuchiya, H and Weir, G.M and Wenzel, U and Werner, A and Wiegel, B and Windisch, T and Wolf, R and Wurden, G.A and Zhang, D and ... and W7-X Team and Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Review of Scientific Instruments, ISSN 0034-6748, 11/2016, Volume 87, Issue 11, p. 11D304
Wendelstein 7-X, a superconducting optimized stellarator built in Greifswald/Germany, started its first plasmas with the last closed flux surface (LCFS)... 
Instrumentation | Journal Article | SPECTROMETER | DESIGN | INSTRUMENTS & INSTRUMENTATION | PHYSICS, APPLIED | Manometers | Neutral gases | Cameras | Diagnostic systems | Short pulses | Plasmas | Plasma (physics) | Discharge | INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Journal Article
by Klinger, T and Andreeva, T and Bozhenkov, S and Brandt, C and Burhenn, R and Buttenschon, B and Fuchert, G and Geiger, B and Grulke, O and Laqua, HP and Pablant, N and Rahbarnia, K and Stange, T and von Stechow, A and Tamura, N and Thomsen, H and Turkin, Y and Wegner, T and Abramovic, I and Akaslompolo, S and Alcuson, J and Aleynikov, P and Aleynikova, K and Ali, A and Alonso, A and Anda, G and Ascasibar, E and Bahner, JP and Baek, SG and Balden, M and Baldzuhn, J and Banduch, M and Barbui, T and Behr, W and Beidler, C and Benndorf, A and Biedermann, C and Biel, W and Blackwell, B and Blanco, E and Blatzheim, M and Ballinger, S and Bluhm, T and Bockenhoff, D and Boswirth, B and Bottger, LG and Borchardt, M and Borsuk, V and Boscary, J and Bosch, HS and Beurskens, M and Brakel, R and Brand, H and Brauer, T and Braune, H and Brezinsek, S and Brunner, KJ and Bussiahn, R and Bykov, V and Cai, J and Calvo, I and Cannas, B and Cappa, A and Carls, A and Carralero, D and Carraro, L and Carvalho, B and Castejon, F and Charl, A and Chaudhary, N and Chauvin, D and Chernyshev, F and Cianciosa, M and Citarella, R and Claps, G and Coenen, J and Cole, M and Cole, MJ and Cordella, F and Cseh, G and Czarnecka, A and Czerski, K and Czerwinski, M and Czymek, G and da Molin, A and da Silva, A and Damm, H and de la Pena, A and Degenkolbe, S and Dhard, CP and Dibon, M and Dinklage, A and Dittmar, T and Drevlak, M and Drewelow, P and Drews, P and Durodie, F and Edlund, E and van Eeten, P and Effenberg, F and ...
NUCLEAR FUSION, ISSN 0029-5515, 11/2019, Volume 59, Issue 11, p. 112004
The optimized superconducting stellarator device Wendelstein 7-X (with major radius R = 5.5 m, minor radius a = 0.5 m, and 30 m(3) plasma volume) restarted... 
SYSTEM | W7-X | PHYSICS, FLUIDS & PLASMAS | impurities | DENSITY LIMIT | plasma performance | turbulence | NBI heating | stellarator | CONFINEMENT | ECR heating | PHYSICS | divertor
Journal Article
Nature Physics, ISSN 1745-2473, 09/2018, Volume 14, Issue 10, pp. 1067 - 1067
In the version of this Article originally published, and in the associated Publisher Correction, the members of the W7-X Team were not included. All versions... 
Physics and Astronomy(all)
Journal Article
Nature Physics, ISSN 1745-2473, 07/2018, Volume 14, Issue 8, pp. 1 - 867
In the version of this Article originally published, A. Mollén’s affiliation was incorrectly denoted as number 10; it should have been 1. Throughout the... 
Typesetting
Journal Article
Physical Review Letters, ISSN 0031-9007, 2009, Volume 103, Issue 12, pp. 125001 - 1/4
Journal Article
Plasma Physics and Controlled Fusion, ISSN 0741-3335, 2013, Volume 55, Issue 11, pp. 115003 - 1/11
Anomalous scattering of high power millimetre waves from gyrotrons at 140 and 110 GHz is investigated for plasma with rotating islands at TEXTOR. The magnetic... 
BEAM | ELECTRON-CYCLOTRON-RESONANCE | COLLECTIVE THOMSON SCATTERING | CURRENT DRIVE | PHYSICS, FLUIDS & PLASMAS | FIELD | ECE | PHYSICS, NUCLEAR | W7-AS | DIAGNOSTICS | TOKAMAK | INSTABILITIES | High density | Scattering | Gyrotrons | Rotating | Plasmas | Magnetic fields | Islands | Density
Journal Article
Carbon, ISSN 0008-6223, 12/2017, Volume 125, pp. 132 - 138
Coalescence of fullerenes into giant fullerenes (C n > 100) has been observed in the gas phase and inside carbon nanotubes. In this work, we demonstrate the... 
Giant fullerenes | Molecular cages | Fullerene formation | Fullerene coalescence | Nanoscale containers | MOLECULAR-DYNAMICS | COMBUSTION | CAGE | MATERIALS SCIENCE, MULTIDISCIPLINARY | CHEMISTRY, PHYSICAL | POTENTIALS | CARBON NANOTUBES | OXYGEN | REAXFF | COALESCENCE | C-60 | Mass spectrometry | Nanotubes | X-ray spectroscopy
Journal Article
Review of Scientific Instruments, ISSN 0034-6748, 08/2016, Volume 87, Issue 8, pp. 1 - 9
Here we report the first measurements of the power levels of stray radiation in the vacuum vessel of Wendelstein 7-X using absolutely calibrated sniffer... 
Journal Article | INSTRUMENTS & INSTRUMENTATION | PHYSICS, APPLIED | Q factors | Radiation measurement | Calibration | Coefficients | CONTAINERS | INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY | CALIBRATION | STRAY RADIATION | BEAMS | QUALITY FACTOR | PROBES
Journal Article
by Wolf, RC and Ali, A and Alonso, A and Baldzuhn, J and Beidler, C and Beurskens, M and Biedermann, C and Bosch, HS and Bozhenkov, S and Brakel, R and Dinklage, A and Feng, Y and Fuchert, G and Geiger, J and Grulke, O and Helander, P and Hirsch, M and Hofel, U and Jakubowski, M and Knauer, J and Kocsis, G and Konig, R and Kornejew, P and Kramer-Flecken, A and Krychowiak, M and Landreman, M and Langenberg, A and Laqua, HP and Lazerson, S and Maassberg, H and Marsen, S and Marushchenko, M and Moseev, D and Niemann, H and Pablant, N and Pasch, E and Rahbarnia, K and Schlisio, G and Stange, T and Pedersen, TS and Svensson, J and Szepesi, T and Mora, HT and Turkin, Y and Wauters, T and Weir, G and Wenzel, U and Windisch, T and Wurden, G and Zhang, D and Abramovic, I and Akaslompolo, S and Aleynikov, P and Aleynikova, K and Alzbutas, R and Anda, G and Andreeva, T and Ascasibar, E and Assmann, J and Baek, SG and Banduch, M and Barbui, T and Barlak, M and Baumann, K and Behr, W and Benndorf, A and Bertuch, O and Biel, W and Birus, D and Blackwell, B and Blanco, E and Blatzheim, M and Bluhm, T and Bockenhoff, D and Bolgert, P and Borchardt, M and Borsuk, V and Boscary, J and Bottger, LG and Brand, H and Brandt, C and Brauer, T and Braune, H and Brezinsek, S and Brunner, KJ and Brunner, B and Burhenn, R and Buttenschon, B and Bykov, V and Calvo, I and Cannas, B and Cappa, A and Carls, A and Carraro, L and Carvalho, B and Castejon, F and Charl, A and Chernyshev, F and Cianciosa, M and Citarella, R and ...
NUCLEAR FUSION, ISSN 0029-5515, 10/2017, Volume 57, Issue 10
After completing the main construction phase of Wendelstein 7-X (W7-X) and successfully commissioning the device, first plasma operation started at the end of... 
TRANSPORT | ENERGY | PHYSICS, FLUIDS & PLASMAS | stellarator | plasma heating | CONFINEMENT | magnetic confinement | PHYSICS | current drive
Journal Article
Plasma Physics and Controlled Fusion, ISSN 0741-3335, 10/2010, Volume 52, Issue 10, pp. 104006 - 1/20
The stability and performance of tokamak plasmas is limited by instabilities such as neoclassical tearing modes. This paper reports on an experimental... 
SYSTEM | LIMITS | PHYSICS, FLUIDS & PLASMAS | STABILIZATION
Journal Article
Analyst, ISSN 0003-2654, 05/2017, Volume 142, Issue 10, pp. 1682 - 1688
The implausible combination of centrifugal disc microfluidics and un-covered channels provides a simple way in which Raman spectroscopy can be implemented in... 
SYSTEM | NANOPARTICLES | CHEMISTRY, ANALYTICAL | SERS | PLATFORMS | FUTURE | CAPILLARY | SCATTERING | FLOW
Journal Article
Journal of Applied Physics, ISSN 0021-8979, 08/2018, Volume 124, Issue 7, p. 73105
This work describes the broadband optical response of graphene grown by chemical vapor deposition by combining terahertz time-domain spectroscopy (THz-TDS) at... 
Physics and Astronomy(all) | DYNAMICS | COPPER FOILS | PHYSICS, APPLIED | FILMS | SUBSTRATE
Journal Article
Review of Scientific Instruments, ISSN 0034-6748, 10/2012, Volume 83, Issue 10, p. 10D730
The critical issues in the development of diagnostics, which need to work robust and reliable under quasi-steady state conditions for the discharge durations... 
WALL | INSTRUMENTS & INSTRUMENTATION | PHYSICS, APPLIED | W7-X | FILMS | WINDOWS | SOFT | Quasi-steady states | Diagnostic systems | Stellarators | Discharge
Journal Article
Journal of Instrumentation, ISSN 1748-0221, 10/2015, Volume 10, Issue 10, pp. 1 - 17
Wendelstein 7-X (W7-X) is a large optimized stellarator (B=2.5T, V=30m3) aiming at demonstrating the reactor relevance of the optimized stellarators. In 2015... 
Plasma diagnostics - probes | Plasma diagnostics - interferometry, spectroscopy and imaging | Nuclear instruments and methods for hot plasma diagnostics | SPECTROMETER | SYSTEM | DESIGN | INSTRUMENTS & INSTRUMENTATION | PRESSURE MEASUREMENT
Journal Article
Fusion Engineering and Design, ISSN 0920-3796, 11/2019, Volume 148, p. 111258
The reliability of gyrotron operation is significantly decreased approaching the individual maximum output power of the tube due to loss of the nominal... 
Field-programmable gate array | Mode recovery | Gyrotron | Satellite mode | Hysteretic behaviour | NUCLEAR SCIENCE & TECHNOLOGY | HYSTERESIS | Plasma | Electric potential | Automation | Recovery | Algorithms | Cyclotron resonance devices | Voltage | Nuclear power plants | Reliability | Acceleration | Hysteresis | Field programmable gate arrays | Electrons
Journal Article
Nuclear Fusion, ISSN 0029-5515, 03/2017, Volume 57, Issue 3, p. 36013
The efficiency of electron cyclotron heating is determined by the microwave absorption of the plasma. Good microwave absorption is also crucial for the machine... 
plasma startup | Condensed Matter Physics | stray radiation | Nuclear and High Energy Physics | O2 absorption | Wendelstein 7-X | W7-X | ECRH | CURRENT DRIVE | PHYSICS, FLUIDS & PLASMAS | POWER
Journal Article
Fusion Engineering and Design, ISSN 0920-3796, 09/2019, Volume 146, pp. 959 - 962
The Wendelstein 7-X (W7-X) experiment is equipped with an Electron Cyclotron Resonance Heating installation consisting of 10 gyrotrons capable of delivering up... 
Michelson Interferometer | W7-X | Gyrotron | Stray radiation | ECE | Notch Filter | NUCLEAR SCIENCE & TECHNOLOGY | Plasma | Wave power | Michelson interferometers | Cyclotron resonance | Switches | Electron cyclotron resonance | Notch filters | Plasma jets | Heating | Cyclotron resonance devices | Optical thickness | Plasmas | Electron density
Journal Article