Scientific Commons: U. Samm

A bulk tungsten divertor row for the outer strike point in JET (2009)

Mertens, Ph., Altmann, H., Hirai, T., Knaup, M., Neubauer, O., Philipps, V., ...

In the frame of the ITER-like wall project, a new row of divertor tiles has been developed which consists of 96 bulk tungsten load-bearing septum replacement plates (LB-SRP). Exposed to the outer...

Development and qualification of a bulk tungsten divertor row for JET (2009)

Mertens, Ph., Altmann, H., Hirai, T., Philipps, V., Pintsuk, G., Rapp, J., ...

A bulk tungsten divertor row has been developed in the frame of the ITER-like Wall project at JET. It consists of 96 tiles grouped in 48 modules around the torus. The outer strike point is located on...

Estimations of erosion fluxes, material deposition and tritium retention in the divertor of ITER (2009)

Kirschner, A., Borodin, D., Philipps, V., Samm, U., Ding, R., Schmid, K., ...

Particle confinement control with resonant magnetic perturbations at TEXTOR (2009)

Schmitz, O., Coenen, J. W., Frerichs, H., Kantor, M., Lehnen, M., Unterberg, B., ...

The influence of resonant magnetic perturbations on edge transport in limiter H-mode plasmas in TEXTOR (2009)

Unterberg, B., Abdullaev, S. S., Coenen, J. W., Finken, K. H., Frerichs, H., Jakubowski, M. W., ...

Suppression of the intermittent blob-type transport by the resonant magnetic perturbation (RMP) in the TEXTOR tokamak (2009)

Xu, Y., Weynants, R. R., Van Schoor, M., Vergote, M., Jachmich, S., Jakubowski, M. W., ...

Investigations of castellated structures for ITER: The effect of castellation shaping and alignment on fuel retention and impurity deposition in gaps (2009)

Litnovsky, A., Wienhold, P., Philipps, V., Krieger, K., Kirschner, A., Matveev, D., ...

Runaway generation during disruptions in JET and TEXTOR (2009)

Lehnen, M., Abdullaev, S. S., Arnoux, G., Bozhenkov, S. A., Jakubowski, M. W., Jaspers, R., ...

Influence of toroidal and vertical magnetic fields on Ion Cyclotron Wall Conditioning in tokamaks (2009)

Lyssoivan, A., Sergienko, G., Rohde, V., Philipps, V., Van Wassenhove, G., Vervier, M., ...

Castellated structures for ITER: Differences of impurity deposition and fuel accumulation in the toroidal and poloidal gaps (2009)

Litnovsky, A., Philipps, V., Wienhold, P., Krieger, K., Kirschner, A., Borodin, D., ...

Carbon transport in the stochastic magnetic boundary of TEXTOR (2009)

Telesca, G., Delabie, E., Schmitz, O., Brezinsek, S., Finken, K. H., Von Hellermann, M., ...

Overview of the results on divertor heat loads in RMP controlled H-mode plasmas on DIII-D (2009)

Jakubowski, M. W., Evans, T. E., Fenstermacher, M. E., Groth, M., Lasnier, C. J., Leonard, A. W., ...

The Relation between Global Confinement and the Shear of the Radial Electric Field with RMP at the Tokamak TEXTOR (2009)

Coenen, J. W., Schmitz, O., Unterberg, B., Clever, M., Jakubowski, M. W., Samm, U., ...

The Relation between Global Confinement and the Shear of the Radial Electric Field with RMP at the Tokamak TEXTOR (2009)

Coenen, J. W., Schmitz, O., Clever, M., Jakubowski, M. W., Krämer Flecken, A., Samm, U., ...

Impact of large type I ELMs on plasma radiation in JET (2009)

Huber, A., Arnoux, G., Beurskens, M. N. A., Brezinsek, S., Coad, P., Eich, T., ...

Impact of large type I ELMs on plasma radiation in JET (2009)

Huber, A., Arnoux, G., Brezinsek, S., Coad, P., Eich, T., Fuchs, J. C., ...

Pedestal Pressure Reduction Induced by a Thermal Transport Enhancement due to Stochastic Magnetic Boundary Layers in High Temperature Plasmas (2009)

Schmitz, O., Evans, T. E., Fenstermacher, M. E., Unterberg, E. A., Austin, M. E., Bray, B. D., ...

Divertor heat loads in RMP ELM controlled H-mode plasmas on DIII-D (2009)

Jakubowski, M. W., Lasnier, C. J., Schmitz, O., Evans, T. E., Fenstermacher, M. E., Groth, M., ...

Identification and analysis of transport domains in the stochastic boundary of TEXTOR-DED for different mode spectra (2008)

Schmitz, O., Jakubowski, M. W., Frerichs, H., Harting, D., Lehnen, M., Unterberg, B., ...

LIF measurements on an atomic helium beam in the edge of a fusion plasma (2008)

Krychowiak, M., Mertens, P., König, R., Schweer, B., Brezinek, S., Schmitz, O., ...

Effect of surface roughness and substrate material on carbon deposition in tokamak TEXTOR (2008)

Kreter, A., Brezinsek, S., Hirai, T., Kirschner, A., Krieger, K., Mayer, M., ...

LIF measurements on an atomic helium beam in the edge of a fusion plasma – possible derivation of the electron density (2008)

Krychowiak, M., Mertens, P., Schweer, B., Brezinsek, S., König, R., Schmitz, O., ...

Application of advanced edge diagnostics for transport studies in the stochastic boundary of TEXTOR-DED (2008)

Schmitz, O., Brezinsek, S., Classen, I., Clever, M., Coenen, J. W., Delabie, E., ...

Status of electron temperature and density measurement with beam emission spectroscopy on thermal helium at TEXTOR (2008)

Schmitz, O., Beigman, I. L., Vainshtein, L. A., Schweer, B., Kantor, M., Pospieszczyk, A., ...

Aspects of three dimensional transport for ELM control experiments in ITER-similar shape plasmas at low collisionality in DIII-D (2008)

Schmitz, O., Evans, T. E., Fenstermacher, M. E., Frerichs, H., Jakubowski, M. W., Schaffer, M. J., ...

Spectroscopic Measurements of the radial electric field under conditions of improved particle confinement (IPC) with the Dynamic Ergodic Divertor (DED) in the Tokamak TEXTOR (2008)

Coenen, J. W., Clever, M., Finken, K. H., Frerichs, H., Jakubowski, M. W., Lehnen, M., ...

Development and testing of a bulk tungsten tile for the JET divertor (2007)

Hirai, T., Bondarchuk, E., Borovkov, A.I., Koppitz, Th., Linke, J., Mertens, Ph., ...

The ITER-like wall project has been launched to design, manufacture and test all the necessary components in view of their installation in a dedicated shutdown 2008–09. One of the R&D activities in...

The effect of the magnetic topology on particle recycling in the ergodic divertor of TEXTOR (2007)

Lehnen, M., Abdullaev, S. S., Brezinsek, S., Finken, K.H., Harting, D., Hellermann, M. Von, ...

Long-term erosion and deposition studies of the main graphite limiter in TEXTOR (2007)

Kreter, A., Kirschner, A., Wienhold, P., Likonen, J., Mayer, M., Philipps, V., ...

Long-term erosion and deposition studies of the main graphite limiter in TEXTOR (2007)

Kreter, A., Kirschner, A., Wienhold, P., Likonen, Jari, Mayer, M., Philipps, V., ...

Physica Scripta Vol.T128, 35 - 39

Material Erosion and Redeposition during the JET MkIIGB-SRP Divertor Campaign. Invited paper (2007)

Kirschner, A., Philipps, V., Balden, M., Bonnin, X., Brezinsek, S., Coad, J. P., ...

Carbon transport, deposition and fuel accumulation in castellated structures exposed in TEXTOR (2007)

Litnovsky, A., Philipps, V., Kirschner, A., Wienhold, P., Sergienko, G., Kreter, A., ...

Hydrocarbon injection for quantification of chemical erosion yields in tokamaks (2007)

Brezinsek, S., Pospieszczyk, A., Borodin, D., Stamp, M.F., Pugno, R., McLean, A.G., ...

Castellated structures for ITER: the influence of the shape of castellation on the impurity deposition and fuel accumulation in gaps (2007)

Litnovsky, A., Philipps, V., Wienhold, P., Krieger, K., Sergienko, G., Kreter, A., ...

New scenarios of ICRF wall conditioning in TEXTOR and ASDEX Upgrade (2007)

Lyssoivan, A., Koch, R., Van Eester, D., Van Wassenhov, G., Vervier, M., Weynants, R., ...

LIF measurements on an atomic helium beam in the edge of a fusion plasma (2007)

Krychowiak, M., Mertens, Ph., Schweer, B., Brezinsek, S., König, R., Schmitz, O., ...

Diagnostic mirrors for ITER: A material choice and the impact of erosion and deposition on their performance (2007)

Litnovsky, A., Wienhold, P., Philipps, V., Sergienko, G., Schmitz, O., Kirschner, A., ...

Metal mirrors will be implemented in about half of the ITER diagnostics. Mirrors in ITER will have to withstand radiation loads, erosion by charge-exchange neutrals, deposition of impurities,...

Development and testing of a bulk tungsten tile for the JET divertor (2007)

HIRAI, T, BONDARCHUK, E, BOROVKOV, AI, KOPPITZ, T, LINKE, J, MERTENS, P, ...

Experience with bulk tungsten test-limiters under high heat loads: melting and melt layer propagation. (2007)

Sergienko, G., Bazylev, B., Hirai, T., Huber, A., Kreter, A., Mertens, Ph., ...

Physica Scripta, T128(2007) S.81-86

Experience with bulk tungsten test-limiters under high heat loads: melting and melt layer propagation. (2007)

Sergienko, G., Bazylev, B., Hirai, T., Huber, A., Kreter, A., Mertens, Ph., ...

11th Internat.Workshop on Plasma-Facing Materials and Components for Fusion Applications, Greifswald, October 10-12, 2006

Erosion of a tungsten limiter under high heat flux in TEXTOR . (2007)

Sergienko, G., Bazylev, B., Huber, A., Kreter, A., Litnovsky, A., Rubel, M., ...

Journal of Nuclear Materials, 363-365(2007) S.96-100

Material Erosion and Redeposition during the JET MkIIGB-SRP Divertor Campaign (2006)

Kirschner, A., Philipps, V., Balden, M., Bonnin, X., Brezinsek, S., Coad, J., ...

Investigation of carbon transport by 13CH4 injection through graphite and tungsten test limiters in TEXTOR (2006)

Kreter, A., Borodin, D., Brezinsek, S., Droste, S., Hirai, T., Kirschner, A., ...

Population densities of atomic helium in the edge of high-temperature plasmas measured with laser-induced fluorescence (2006)

Krychowiak, M., Mertens, P., Koenig, R., Schweer, B., Brezinsek, S., Schmitz, O., ...

Change of the magnetic-field topology by an ergodic divertor on the plasma structure and transport (2006)

Jakubowski, M. W., Schmitz, O., Abdullaev, S. S., Brezinsek, S., Finken, K. H., Krämer-Flecken, A., ...

This version is available at the following Publisher URL: http://prl.aps.org

Plasma-surface interaction in the context of ITER (2006)

Kleyn, A. W., Lopes-Cardozo, N. J., Samm, U.

Investigation of carbon transport by 13CH4 injection through graphite and tungsten test limiters in TEXTOR (2006)

Kreter, A., Borodin, D., Droste, S., Hirai, T., Kirschner, A., Litnovsky, A., ...

This version is available at the following Publisher URL: http://dx.doi.org/10.1088/0741-3335/48/9/009

Plasma-Wall Interaction (2006)

Samm, U.

Overview of Tokamak Results (2006)

Unterberg, B., Samm, U.

Material erosion and redeposition during the JET MkIIGB-SRP divertor campaign (2006)

Kirschner, A., Philipps, V., Balden, M., Bonnin, X., Brezinsek, S., Coad, J.P., ...

Overview of experiments with the dynamic ergodic divertor on TEXTOR (2006)

FINKEN, KH, ABDULLAEV, S, BIEL, W, DE BOCK, MFM, BREZINSEK, S, BUSCH, C, ...

Transport and divertor properties of the dynamic ergodic divertor (2005)

Lehnen, M., Abdullaev, S. S., Biehl, W., Brezinsek, S., Busch, C., Finken, K. H., ...

The definitive version is available at the following Publisher URL: http://www.iop.org .

Investigation of carbon transport by 13CH4 injection through graphite and tungsten test limiters in TEXTOR (2005)

Kreter,A., Borodin,D., Brezinsek,S., Droste,S., Hirai,T., Kirschner,A., ...

Experimental observations and modelling of carbon transport in the inner divertor of JET (2005)

Kirschner,A., Phillips,V., Coster,D. P., Erents,S. K., Esser,H. G., Federici,G., ...

Effect of the Dynamic Ergodic Divertor in the TEXTOR Tokamak on MHD Stability, Plasma Rotation and Transport (2005)

Wolf,R. C., Biel,W., Finken,K. H., Günter,S., Hogeweij,G. M. D., ...

Effect of the Dynamic Ergodic Divertor in the TEXTOR Tokamak on MHD Stability, Plasma Rotation and Transport (2005)

Wolf,R.C., Biel,W., Finken,K.H., Guenter,S., Hogeweij,G.M.D., ...

Investigation of carbon transport by 13CH4 injection through graphite and tungsten test limiters in TEXTOR (2005)

Kreter, A., Borodin, D., Brezinsek, S., Droste, S., Hirai, T., Kirschner, A., ...

Experimental observations and modelling of carbon transport in the inner divertor of JET (2005)

Kirschner, A., Phillips, V., Coster, D. P., Erents, S. K., Esser, H. G., Federici, G., ...

Effect of the Dynamic Ergodic Divertor in the TEXTOR Tokamak on MHD Stability, Plasma Rotation and Transport (2005)

Wolf, R. C., Biel, W., Finken, K. H., Günter, S., Hogeweij, G. M. D., ...

Effect of the Dynamic Ergodic Divertor in the TEXTOR Tokamak on MHD Stability, Plasma Rotation and Transport (2005)

Wolf, R.C., Biel, W., Finken, K.H., Guenter, S., Hogeweij, G.M.D., ...

Results from a double Li-beam technique for simultaneous measurement of the radial and poloidal components of electron density fluctuations by two thermal beams (2005)

Huber, A., Samm, U., Schweer, B., Mertens, Ph.

This version is available at the following Publisher URL: http://stacks.iop.org/0741-3335/47/409

Toroidal plasma rotation induced by the Dynamic Ergodic Divertor in the TEXTOR tokamak (2005)

Finken, K. H., Abdullaev, S. S., Von Hellermann, M., Jakubowski, M., Jaspers, R., ...

This version is available at the following Publisher URL: http://prl.aps.org

Characterisation of the deuterium recycling flux in front of a graphite surface in the tokamak TEXTOR (2005)

Brezinsek, S., Sergienko, G., Pospieszczyk, A., Mertens, Ph., Samm, U., Greenland, P. T.

This version is available at the following Publisher URL: http://stacks.iop.org/0741-3335/47/615

Effect of the dynamic ergodic in the TEXTOR tokamak on MHD stability, plasma rotation and transport (2005)

Wolf, R., Biel, W., Finken, K. H., GÃ¼nter, S., Hogeweij, G. M. D., ...

This version is available at the following URL: http://dx.doi.org/10.1088/0029-5515/45/12/026

The radiative improved mode in TEXTOR - power exhaust and improved confinement at high density (2005)

Unterberg, B., Samm, U., Tokar, A. D., Messiaen, A. M., Ongena, J.

TEXTOR: a pioneering device for new concepts in plasma-wall interaction, exhaust, and confinement (2005)

Samm, U.

Background and initial experiments with the dynamic ergodic divertor on TEXTOR (2005)

Finken, K. H., Abdullaev, S. S., Giesen, B., Von Hellermann, M., Hogeweij, M. D., ...

Limiter lock systems at TEXTOR: flexible tools for plasma-wall investigation (2005)

Schweer, B., Brezinsek, S., Esser, H. G., Huber, A., Mertens, Ph., Musso, S., ...

Toroidal plasma rotation induced by the Dynamic Ergodic Divertor in the TEXTOR tokamak (2005)

FINKEN, KH, ABDULLAEV, SS, DE BOCK, MFM, VON HELLERMANN, M, JAKUBOWSKI, M, JASPERS, R, ...

First results from the dynamic ergodic divertor at TEXTOR (2005)

LEHNEN, M, ABDULLAEV, SS, BIEL, W, BREZINSEK, S, FINKEN, KH, HARTING, D, ...

Transport and divertor properties of the dynamic ergodic divertor (2005)

LEHNEN, M, ABDULLAEV, S, BIEL, W, DE BOCK, MFM, BREZINSEK, S, BUSCH, C, ...

The Dynamic Ergodic Divertor in the TEXTOR tokamak: plasma response to dynamic helical magnetic field perturbations (2004)

Finken, K. H., Abdullaev, S. S., Biel, W., Busch, C., Farshi, E., ...

This version is available at the following Publisher URL: http://stacks.iop.org/0741-3335/46/B143

Investigation of self-organized critically behavior of edge plasma transport in Torus experiment of technology oriented research (2004)

Xu, H. Y., Jachmich, S., Weynants, R. R., Huber, A., Unterberg, B., Samm, U.

This version is available at the following Publisher URL: http://pop.aip.org

Overview of Tokamak Results (2004)

Unterberg, B., Samm, U.

Radiation Phenomena at Edge and Divertor (2004)

Samm, U.

The dynamic ergodic divertor in the TEXTOR tokamak: plasma response to dynamic helical magnetic field perturbations (2004)

FINKEN, KH, ABDULLAEV, SS, BIEL, W, DE BOCK, MFM, BUSCH, C, FARSHI, E, ...

B4C-limiter experiments at TEXTOR (2003)

Pospieszczyk,A., Schweer,B., Philipps,V., Huber,A., Sergienko,G., Samm,U., ...

In the TEXTOR tokamak the five top and five bottom poloidal carbon limiter blocks have been replaced by inertially cooled copper blocks coated with a 170 μm VPS-B4C layer. Similar limiter blocks...

B4C-limiter experiments at TEXTOR (2003)

Pospieszczyk, A., Schweer, B., Philipps, V., Huber, A., Sergienko, G., Samm, U., ...

In the TEXTOR tokamak the five top and five bottom poloidal carbon limiter blocks have been replaced by inertially cooled copper blocks coated with a 170 μm VPS-B4C layer. Similar limiter blocks...

Plasma edge transport phenomena caused by particle drifts and sources in TEXTOR (2003)

Lehnen, M., Brix, M., Samm, U., Schweer, B., Unterberg, B.

This version is available at the following URL: http://dx.doi.org/10.1088/0029-5515/43/3/302

Spectroscopic observation of Si I- and Si II-emission lines in the boundary of TEXTOR and comparison with kinetic calculations (2003)

Huber, A., Beigman, I., Borodin, D., Mertens, Ph., Philipps, V., Pospieszczyk, A., ...

This version is available at the following Publisher URL: http://stacks.iop.org/0741-3335/45/89

Hydrogen release from plasma-facing components into fusion plasmas (2001)

Mertens, Ph., Brezinsek, S., Greenland, P. T., Hey, J. D., Pospieszczyk, A., Reiter, D., ...

This version is available at the following Publisher URL: http://dx.doi.org/10.1088/0741-3335/43/12A/327

Recent progress toward high performance above the Greenwald density limit in impurity seeded discharges in limiter and divertor Tokamaks (2001)

Ongena, J., Budny, R., Dumortier, P., Jackson, G. L., Kubo, H., Messiaen, A. M., ...

This version is available at the following Publisher URL: http://pop.aip.org

Comparison of Tokamak Behaviour with Tungsten and Low-Z Plasma Facing Materials (2000)

Philipps, V., Neu, R., Rapp, J., Samm, U., Tokar, M., Tanabe, T., ...

Comparison of Tokamak Behaviour with Tungsten and Low-Z Plasma Facing Materials (2000)

Philipps, V., Neu, R., Rapp, J., Samm, U., Tokar, M., Tanabe, T., ...

Quasistationary high confinement discharges with Trans-Greenwald density in TEXTOR-94 (2000)

Mank, G., Messiaen, A. M., Ongena, J., Unterberg, B., Dumortier, P., Finken, K. H., ...

This version is available at the following Publisher URL: http://prl.aps.org

Comparison of tokamak behaviour with tungsten and low-Z plasma facing materials (2000)

Philipps, V., Neu, R., Rapp, J., Samm, U., Tokar, A. D., Tanabe, T., ...

This version is available at the following Publisher URL: http://dx.doi.org/10.1088/0741-3335/42/12B/322

Neon radiation efficiency for different confinement regimes in TEXTOR-94 (2000)

Telesca, V. M., Unterberg, B., Jaspers, R., Messiaen, A. M., Ongena, J., Rapp, J., ...

This version is available at the following URL: http://dx.doi.org/10.1088/0029-5515/40/11/304

Neon radiation efficiency for different confinement regimes in TEXTOR-94. (2000)

Telesca, Giuseppe, UNTERBERG, B, JASPERS, R, MESSIAEN, AM, ONGENA, J, RAPP, J, ...

RESULTS AND MODELING OF HIGH-POWER EDGE RADIATION COOLING IN TEXTOR. (1995)

ONGENA, J, MESSIAEN, AM, TOKAR, M, SAMM, U, UNTERBERG, B, Schoon, Niels, ...

Improved Confinement with Edge Radiative Cooling at High Densities and High Heating Power in TEXTOR (1994)

Messiaen, A. M., Ongena, J., Samm, U., Unterberg, B., Vandenplas, P.E., Van Oost, G., ...

Experimental Measurements of the Fuelling Efficiency of Impurities injected into Textor (1993)

McCracken, G. M., Samm, U., Stangeby, P. C., Bertschinger, G., Boedo, J. A., Davies, S. J., ...

Radiative Edges under Control by Impurity Fluxes (1993)

Samm, U., Bertschinger, G., Bogen, P., Hey, J. D., Hintz, E., Könen, L., ...

Improved Confinement in TEXTOR (1993)

Ongena, J., Conrads, H., Gaigneaux, M., Messiaen, A. M., Weynants, R. R., Barbian, E., ...

Confinement and Profile Changes Induced by the Presence of Positive or Negative Radial Electric Fields in the Edge of the Textor Tokamak (1992)

Weynants, R. R., Van Oost, G., Bertschinger, G., Boedo, J., Brys, P., Delvigne, T., ...

Plasma Ion Mass-Spectrometry in the Textor Boundary (1992)

Matthews, G. F., Elder, D., McCracken, G. M., Monk, R. D., Pitts, R. A., Samm, U., ...

In this paper we present the first results obtained with a plasma ion mass spectrometer in the boundary of the TEXTOR tokamak. Measurements were made several days after TEXTOR was boronised....

Studies of fuelling rates of CO, CH 4 and oxygen in the TEXTOR tokamak (1992)

McCracken, G. M., Samm, U., Bertschinger, B., Philipps, V., Pitts, R. A., Goodall, D. H. J., ...

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Effect of Antenna Phasing and Wall Conditioning on ICRH in TEXTOR (1989)

Banno, T., Bertschinger, G., Bogen, P., Cao, Y., Conrads, H., ...

Properties, Control and ICR-Heating of the Plasma in TEXTOR (1986)

Wolf, G. H., Bay, H. L., Bertschinger, G., Bieger, W., Bogen, P., Brüssau, E., ...

Ion Cyclotron Resonance Heating on TEXTOR (1986)

Bay, H. L., Bertschinger, G., Bieger, W., Bogen, P., Campbell, G. A., Conn, R. W., ...

The definitive version is available at http://dx.doi.org/10.1088/0741-3335/28/1A/007

First Results from TEXTOR (1984)

Soltwisch, H., Bay, H. L., Bertschinger, G., Bogen, P., Conrads, H., Dippe, K. H., ...