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Showing 1 to 12 of 26 entries
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New advanced operational regime on the W7-AS stellarator.

Physical review letters

McCormick K, Grigull P, Burhenn R, Brakel R, Ehmler H, Feng Y, Gadelmeier F, Giannone L, Hildebrandt D, Hirsch M, Jaenicke R, Kisslinger J, Klinger T, Klose S, Knauer JP, König R, Kühner G, Laqua HP, Naujoks D, Niedermeyer H, Pasch E, Ramasubramanian N, Rust N, Sardei F, Wagner F, Weller A, Wenzel U, Werner A.
PMID: 12097046
Phys Rev Lett. 2002 Jul 01;89(1):015001. doi: 10.1103/PhysRevLett.89.015001. Epub 2002 Jun 11.

A promising new plasma operational regime on the Wendelstein stellarator W7-AS has been discovered. It is extant above a threshold density and characterized by flat density profiles, high energy and low impurity confinement times, and edge-localized radiation. Impurity accumulation...

First Observation of a Stable Highly Dissipative Divertor Plasma Regime on the Wendelstein 7-X Stellarator.

Physical review letters

Zhang D, König R, Feng Y, Burhenn R, Brezinsek S, Jakubowski M, Buttenschön B, Niemann H, Pavone A, Krychowiak M, Kwak S, Svensson J, Gao Y, Pedersen TS, Alonso A, Baldzuhn J, Beidler CD, Biedermann C, Bozhenkov S, Brunner KJ, Damm H, Hirsch M, Giannone L, Drewelow P, Effenberg F, Fuchert G, Hammond KC, Höfel U, Killer C, Knauer J, Laqua HP, Laube R, Pablant N, Pasch E, Penzel F, Rahbarnia K, Reimold F, Thomsen H, Winters V, Wagner F, Klinger T, W-X Team.
PMID: 31386539
Phys Rev Lett. 2019 Jul 12;123(2):025002. doi: 10.1103/PhysRevLett.123.025002.

For the first time, the optimized stellarator Wendelstein 7-X has operated with an island divertor. An operation regime in hydrogen was found in which the total plasma radiation approached the absorbed heating power without noticeable loss of stored energy....

Bayesian inference of spatially resolved Z.

The Review of scientific instruments

Kwak S, Hergenhahn U, Höfel U, Krychowiak M, Pavone A, Svensson J, Ford O, König R, Bozhenkov S, Fuchert G, Pasch E, Brunner KJ, Knauer J, Kornejew P, Trimiño Mora H, Pedersen TS.
PMID: 34243367
Rev Sci Instrum. 2021 Apr 01;92(4):043505. doi: 10.1063/5.0043777.

In nuclear fusion research, the effective ion charge Z

Impact of Magnetic Field Configuration on Heat Transport in Stellarators and Heliotrons.

Physical review letters

Warmer F, Tanaka K, Xanthopoulos P, Nunami M, Nakata M, Beidler CD, Bozhenkov SA, Beurskens MNA, Brunner KJ, Ford OP, Fuchert G, Funaba H, Geiger J, Gradic D, Ida K, Igami H, Kubo S, Langenberg A, Laqua HP, Lazerson S, Morisaki T, Osakabe M, Pablant N, Pasch E, Peterson B, Satake S, Seki R, Shimozuma T, Smith HM, Stange T, Stechow AV, Sugama H, Suzuki Y, Takahashi H, Tokuzawa T, Tsujimura T, Turkin Y, Wolf RC, Yamada I, Yanai R, Yasuhara R, Yokoyama M, Yoshimura Y, Yoshinuma M, Zhang D, W-X Team, Lhd Experimental Group.
PMID: 34889640
Phys Rev Lett. 2021 Nov 24;127(22):225001. doi: 10.1103/PhysRevLett.127.225001.

We assess the magnetic field configuration in modern fusion devices by comparing experiments with the same heating power, between a stellarator and a heliotron. The key role of turbulence is evident in the optimized stellarator, while neoclassical processes largely...

Bayesian modeling of microwave radiometer calibration on the example of the Wendelstein 7-X electron cyclotron emission diagnostic.

The Review of scientific instruments

Hoefel U, Hirsch M, Kwak S, Pavone A, Svensson J, Stange T, Hartfuß HJ, Schilling J, Weir G, Oosterbeek JW, Bozhenkov S, Braune H, Brunner KJ, Chaudhary N, Damm H, Fuchert G, Knauer J, Laqua H, Marsen S, Moseev D, Pasch E, Scott ER, Wilde F, Wolf R.
PMID: 31042980
Rev Sci Instrum. 2019 Apr;90(4):043502. doi: 10.1063/1.5082542.

This paper reports about a novel approach to the absolute intensity calibration of an electron cyclotron emission (ECE) spectroscopy system. Typically, an ECE radiometer consists of tens of separated frequency channels corresponding to different plasma locations. An absolute calibration...

Diagnostic developments for quasicontinuous operation of the Wendelstein 7-X stellarator.

The Review of scientific instruments

König R, Cantarini J, Dreier H, Erckmann V, Hildebrandt D, Hirsch M, Kocsis G, Kornejew P, Laux M, Laqua H, Pasch E, Recsei S, Szabó V, Thomsen H, Weller A, Werner A, Wolf R, Ye MY, Zoletnik S.
PMID: 19044644
Rev Sci Instrum. 2008 Oct;79(10):10F337. doi: 10.1063/1.2964998.

The stellarator Wendelstein 7-X will allow for quasicontinuous operation with the duration only being limited to two 30 min discharges per day, at a continuous heating power of 10 MW electron cyclotron resonance heating (ECRH) at 140 GHz, by...

Publisher Correction: Demonstration of reduced neoclassical energy transport in Wendelstein 7-X.

Nature

Beidler CD, Smith HM, Alonso A, Andreeva T, Baldzuhn J, Beurskens MNA, Borchardt M, Bozhenkov SA, Brunner KJ, Damm H, Drevlak M, Ford OP, Fuchert G, Geiger J, Helander P, Hergenhahn U, Hirsch M, Höfel U, Kazakov YO, Kleiber R, Krychowiak M, Kwak S, Langenberg A, Laqua HP, Neuner U, Pablant NA, Pasch E, Pavone A, Pedersen TS, Rahbarnia K, Schilling J, Scott ER, Stange T, Svensson J, Thomsen H, Turkin Y, Warmer F, Wolf RC, Zhang D.
PMID: 34642470
Nature. 2021 Oct;598(7882):E5. doi: 10.1038/s41586-021-04023-y.

No abstract available.

Effects of supervised aerobic exercise on cardiorespiratory fitness and patient-reported health outcomes in colorectal cancer patients undergoing adjuvant chemotherapy-a pilot study.

Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer

Zopf EM, Schulz H, Poeschko J, Aschenbroich K, Wilhelm T, Eypasch E, Kleimann E, Severin K, Benz J, Liu E, Bloch W, Baumann FT.
PMID: 34623488
Support Care Cancer. 2021 Oct 08; doi: 10.1007/s00520-021-06608-9. Epub 2021 Oct 08.

PURPOSE: Colorectal cancer and its treatment are associated with debilitating side effects. Exercise may improve the physical and psychological wellbeing of cancer patients; however, evidence in colorectal cancer patients undergoing adjuvant chemotherapy is limited. This pilot study aimed to...

Overview of diagnostic performance and results for the first operation phase in Wendelstein 7-X (invited).

The Review of scientific instruments

Krychowiak M, Adnan A, Alonso A, Andreeva T, Baldzuhn J, Barbui T, Beurskens M, Biel W, Biedermann C, Blackwell BD, Bosch HS, Bozhenkov S, Brakel R, Bräuer T, Brotas de Carvalho B, Burhenn R, Buttenschön B, Cappa A, Cseh G, Czarnecka A, Dinklage A, Drews P, Dzikowicka A, Effenberg F, Endler M, Erckmann V, Estrada T, Ford O, Fornal T, Frerichs H, Fuchert G, Geiger J, Grulke O, Harris JH, Hartfuß HJ, Hartmann D, Hathiramani D, Hirsch M, Höfel U, Jabłoński S, Jakubowski MW, Kaczmarczyk J, Klinger T, Klose S, Knauer J, Kocsis G, König R, Kornejew P, Krämer-Flecken A, Krawczyk N, Kremeyer T, Książek I, Kubkowska M, Langenberg A, Laqua HP, Laux M, Lazerson S, Liang Y, Liu SC, Lorenz A, Marchuk AO, Marsen S, Moncada V, Naujoks D, Neilson H, Neubauer O, Neuner U, Niemann H, Oosterbeek JW, Otte M, Pablant N, Pasch E, Sunn Pedersen T, Pisano F, Rahbarnia K, Ryć L, Schmitz O, Schmuck S, Schneider W, Schröder T, Schuhmacher H, Schweer B, Standley B, Stange T, Stephey L, Svensson J, Szabolics T, Szepesi T, Thomsen H, Travere JM, Trimino Mora H, Tsuchiya H, Weir GM, Wenzel U, Werner A, Wiegel B, Windisch T, Wolf R, Wurden GA, Zhang D, Zimbal A, Zoletnik S.
PMID: 27910389
Rev Sci Instrum. 2016 Nov;87(11):11D304. doi: 10.1063/1.4964376.

Wendelstein 7-X, a superconducting optimized stellarator built in Greifswald/Germany, started its first plasmas with the last closed flux surface (LCFS) defined by 5 uncooled graphite limiters in December 2015. At the end of the 10 weeks long experimental campaign...

The Thomson scattering system at Wendelstein 7-X.

The Review of scientific instruments

Pasch E, Beurskens MN, Bozhenkov SA, Fuchert G, Knauer J, Wolf RC.
PMID: 27910540
Rev Sci Instrum. 2016 Nov;87(11):11E729. doi: 10.1063/1.4962248.

This paper describes the design of the Thomson scattering system at the Wendelstein 7-X stellarator. For the first operation campaign we installed a 10 spatial channel system to cover a radial half profile of the plasma cross section. The...

Impact of Magnetic Field Configuration on Heat Transport in Stellarators and Heliotrons.

Physical review letters

Warmer F, Tanaka K, Xanthopoulos P, Nunami M, Nakata M, Beidler CD, Bozhenkov SA, Beurskens MNA, Brunner KJ, Ford OP, Fuchert G, Funaba H, Geiger J, Gradic D, Ida K, Igami H, Kubo S, Langenberg A, Laqua HP, Lazerson S, Morisaki T, Osakabe M, Pablant N, Pasch E, Peterson B, Satake S, Seki R, Shimozuma T, Smith HM, Stange T, Stechow AV, Sugama H, Suzuki Y, Takahashi H, Tokuzawa T, Tsujimura T, Turkin Y, Wolf RC, Yamada I, Yanai R, Yasuhara R, Yokoyama M, Yoshimura Y, Yoshinuma M, Zhang D, W-X Team, Lhd Experimental Group.
PMID: 34889640
Phys Rev Lett. 2021 Nov 24;127(22):225001. doi: 10.1103/PhysRevLett.127.225001.

We assess the magnetic field configuration in modern fusion devices by comparing experiments with the same heating power, between a stellarator and a heliotron. The key role of turbulence is evident in the optimized stellarator, while neoclassical processes largely...

Impact of Magnetic Field Configuration on Heat Transport in Stellarators and Heliotrons.

Physical review letters

Warmer F, Tanaka K, Xanthopoulos P, Nunami M, Nakata M, Beidler CD, Bozhenkov SA, Beurskens MNA, Brunner KJ, Ford OP, Fuchert G, Funaba H, Geiger J, Gradic D, Ida K, Igami H, Kubo S, Langenberg A, Laqua HP, Lazerson S, Morisaki T, Osakabe M, Pablant N, Pasch E, Peterson B, Satake S, Seki R, Shimozuma T, Smith HM, Stange T, Stechow AV, Sugama H, Suzuki Y, Takahashi H, Tokuzawa T, Tsujimura T, Turkin Y, Wolf RC, Yamada I, Yanai R, Yasuhara R, Yokoyama M, Yoshimura Y, Yoshinuma M, Zhang D, W-X Team, Lhd Experimental Group.
PMID: 34889640
Phys Rev Lett. 2021 Nov 24;127(22):225001. doi: 10.1103/PhysRevLett.127.225001.

We assess the magnetic field configuration in modern fusion devices by comparing experiments with the same heating power, between a stellarator and a heliotron. The key role of turbulence is evident in the optimized stellarator, while neoclassical processes largely...

Showing 1 to 12 of 26 entries