S. Jachmich

Details der Publikationsliste

Zeitraum

1999 - 2009

Anzahl

223

Co-Autoren

Divertor particle and power deposition profiles in JET ELMy H-mode discharges (2007)

Jachmich, S., Eich, T., Fundamenski, W., Kallenbach, A., Pitts, R. A.

The transient pulses of heat and particles arriving at the divertor target plates as a consequence of upstream ELM activity have been characterised at JET using an array of target embedded Langmuir...

Divertor power deposition and target current asymmetries during type-1 ELMS in ASDEX Upgrade and JET (2007)

Eich, T., Kallenbach, A., Pitts, R. A., Jachmich, S., Fuchs, J. C., Herrmann, A., ...

Analysis of the type-l ELM power load asymmetries using infra-red thermography and target current measurements is performed ASDEX Upgrade Upper Single Null and JET DOC-L type-I ELMy H-Mode discharges...

Multi-machine studies of the role of turbulence and electric fields in the establishment of improved confinement in tokamak plasmas (2007)

Van Oost, Guido, Bulanin, V. V., Donne, A. J. H., Gusakov, E. Z., Kraemer-Flecken, A., Krupnik, L. I., ...

An extensive (INTAS) research programme started in 2002 to investigate the correlations between, on the one hand, the occurrence of transport barriers and improved confinement in the medium-size...

Active control of type-I edge-localized modes with n=1 perturbation fields in the JET tokamak (2007)

Liang, Y., Koslowski, H. R., Thomas, P. R., Nardon, E., Alper, B., Andrew, P., ...

Type-I edge-localized modes (ELMs) have been mitigated at the JET tokamak using a static external n=1 perturbation field generated by four error field correction coils located far from the plasma....

Active control of type-I edge localized modes on JET (2007)

Liang, Y., Koslowski, H. R., Thomas, P. R., Nardon, E., Jachmich, S., Alper, B., ...

The operational domain for active control of type-I edge localized modes (ELMs) with an n = 1 external magnetic perturbation field induced by the ex-vessel error field correction coils on JET has...

Investigation of the reliability of a 1-D fluid model for Mach probe measurements (2005)

Peleman, P, Jachmich, S, Van Schoor, M, Van Oost, G

In this paper we show how a one dimensional fluid model can be used to interpret data obtained from an inclined Mach-probe or a Gundestrup probe. We use an analytical approximation of the solution of...

Impurity seeded ELMy H-modes in JET with high density and reduced heat load (2005)

Monier-Garbet, P., Andrew, Ph., Rapp, J., Belo, P., Bonheure, G., Corre, Y., ...

This version is available at the following URL: http://dx.doi.org/10.1088/0029-5515/45/11/022

ELMS and strike point jumps (2005)

Solano, E. R., Jachmich, S., Villone, F., Hawkes, N., Corre, Y., Pitts, R. A., ...

If an ELM is a peeling of flux surfaces from the plasma, due to a broken separatrix, current density is lost as well as particles and energy. The fast loss of a current-carrying plasma layer modifies...

Edge and divertor physics with reversed toroidal field in JET (2005)

Pitts, R. A., Andrew, P., Bonnin, X., Chankin, A. V., Corre, Y., Corrigan, G., ...

Asymmetries are a ubiquitous feature of the scrape-off layer (SOL) and divertor plasmas in any tokamak and are thought to be driven primarily by a variety of drift flows, the directions of which...

The effect of field reversal on the JET MkIIGB-SRP divertor performance in L-mode density limit discharges (2005)

Huber, A., Rapp, J., Andrew, P., Coad, P., Corrigan, G., Erents, K., ...

The effect of field reversal on the JET MkIIGB-SRP divertor performance has been investigated in L-mode density limit discharges. These experiments show that the direction of the magnetic field has a...

Observation of self-organized criticality (SOC) behavior during edge biasing experiment on TEXTOR (2004)

Xu, Yuhong H., Jachmich, S., Weynants, R. R.

The self-organized criticality (SOC) behavior of the edge plasma transport has been investigated using the fluctuation data measured in the plasma edge and the scrape-off layer of TEXTOR tokamak...

Observation of self-organized criticality (SOC) behavior during edge biasing experiment on TEXTOR (2004)

Xu, Yuhong, Jachmich, S., Weynants, R.

The self-organized criticality (SOC) behavior of the edge plasma transport has been investigated using the fluctuation data measured in the plasma edge and the scrape-off layer of TEXTOR tokamak...

Observation of self-organized criticality (SOC) behavior during edge biasing experiment on TEXTOR (2004)

Xu, Yuhong, Jachmich, S., Weynants, R.

The self-organized criticality (SOC) behavior of the edge plasma transport has been investigated using the fluctuation data measured in the plasma edge and the scrape-off layer of TEXTOR tokamak...

Observation of self-organized criticality (SOC) behavior during edge biasing experiment on TEXTOR (2004)

Xu, Yuhong, Jachmich, S., Weynants, R.

The self-organized criticality (SOC) behavior of the edge plasma transport has been investigated using the fluctuation data measured in the plasma edge and the scrape-off layer of TEXTOR tokamak...

Washboard modes as ELM-related events in JET (2004)

Perez, C. P., Koslowski, H. R., Smeulders, P., Huysmans, G. T. A., Jachmich, S., Eich, T., ...

This version is available at the following Publisher URL: http://stacks.iop.org/0741-3335/46/61

Predictive modelling of the impact of argon injection on H-mode plasmas in JET with the RITM code (2004)

Unterberg, B., Kalupin, D., Tokar, M. Z., Corrigan, G., Dumortier, P., Huber, A., ...

This version is available at the following Publisher URL: http://dx.doi.org/10.1088/0741-3335/46/5A/026

Towards the realization on JET of an integrated H-mode scenario for ITER (2004)

Ongena, J., Monier-Garbet, P., Suttrop, W., Andrew, Ph., Becoulet, M., Budny, R., ...

This version is available at the following URL: http://dx.doi.org/10.1088/0029-5515/44/1/015

Observation of self-organized criticality (SOC) behavior during edge biasing experiment on TEXTOR (2004)

Xu, Yuhong, Jachmich, S., Weynants, R.

The self-organized criticality (SOC) behavior of the edge plasma transport has been investigated using the fluctuation data measured in the plasma edge and the scrape-off layer of TEXTOR tokamak...

Divertor modelling of septum assessment experiments in JET MkIIGB (2004)

Tsitrone, E., Andrew, P., Bonnin, X., Coad, P., Coster, D., Fundamenski, W., ...

We present results obtained from modeling the septum assessment experiments of the JET MkIIGB divertor with the B2-Eirene code package. Similar L-mode discharges have been performed with and without...

Towards the realization on JET of an integrated H-mode scenario for ITER (2004)

Ongena, J., Monier-Garbet, P., Suttrop, W., Andrew, P., Becoulet, M., Budny, R., ...

ELMy H-mode experiments at JET in 2000/mid-2002 have focused on discharges with normalized parameters for plasma density, energy confinement and beta similar to those of the ITER Q(DT) = 10 reference...

Impurity-seeded plasma experiments on JET (2003)

Maddison,G. P., Brix,M., Budny,R., Charlet,M., Coffey,I., Cordey,J. G., ...

Scaling to larger tokamaks of high confinement plasmas with radiating edges, induced by impurities, is being studied through internationally collaborative experiments on JET. In campaigns till the...

Stationary and Transient Divertor Heat Flux Profiles and Extrapolation to ITER (2003)

Herrmann,A., Eich,T., Jachmich,S., Laux,M., Andrew,P., Bergmann,A., ...

Experimental results on divertor heat load measurements from ASDEX Upgrade and JET are discussed. Thereby three topics are considered: (i) parameter dependence of steady state heat flux profiles,...

Arcing at B4C-covered limiters exposed to a SOL-plasma (2003)

Laux,M., Schneider,W., Wienhold,P., Jüttner,B., Huber,A., Balden,M., ...

Plasma sprayed B4C-layers considered as wall coatings for the W7X stellarator have been studied during and after exposure to TEXTOR and after arcing experiments in vacuum. Arcing through the B₄C...

ELM energy and particle losses and their extrapolation to burning plasma experiments (2003)

Loarte,A., Saibene,G., Sartori,R., Becoulet,M., Horton,L., Eich,T., ...

Analysis of Type I ELMs from present experiments shows that ELM energy losses decrease with increasing pedestal plasma collisionality (ν*ped) and/or increasing τFront║, where...

Comparing scrape-off layer and divertor physics in JET pure He and D discharges (2003)

Pitts,R. A., Andrew,P., Andrew,Y., Becoulet,C., Coffey,I., Coster,D., ...

Though helium plasmas are one option for the low activation phase of ITER, little effort has thus far been devoted to studying them in a large, diverted tokamak. A recent campaign on JET has...

Role of sawtooth in avoiding impurity accumulation and maintaining good confinement in JET radiative mantle discharges (2003)

Nave,M. F. F., Rapp,J., Bolzonella,T., Dux,R., Mantsinen,M. J., Budny,R., ...

Impurity injection in the JET ELMy H-mode regime has produced high-confinement, quasi-steady-state plasmas with densities close to the Greenwald density. However, at large Ar densities, a sudden loss...

Tomographic reconstruction of 2D line radiation distribution in the JET MkIIGB divertor (2003)

Huber,A., Coad,P., Coster,D., Ingesson,L. C., Itami,K., Jachmich,S., ...

A 2D-tomographic reconstruction of D- and C III-emission distribution in L-mode, density limit discharge has been performed and compared with results from other diagnostics (KL2, KS3). The observed...

Towards the realization on JET of an integrated H-mode scenario for ITER (2003)

Ongena,J., Monier-Garbet,P., Suttrop,W., Andrew,P., Bécoulet,M., Budny,R., ...

ELMy H-Mode experiments at JET since 2000 have focussed on the steady state and simultaneous realization of the ITER QDT=10 requirements in the normalized parameters for density, confinement and...

Reduction of divertor heat load in JET ELMy H-modes using impurity seeding techniques (2003)

Rapp,J., Monier-Garbet,P., Andrew,P., Dumortier,P., Eich,T., Fundamenski,W., ...

One of the most severe problems for fusion reactors is the power load on the divertor target plates. In order to reduce the power load in the divertor radiation cooling by seeding of impurities is...

Divertor detachment during pure helium plasmas in JET (2003)

Wischmeier,M., Coster,D., Bonnin,X., Eich,T., Huber,A., Ingesson,C., ...

A campaign of pure helium discharges in the JET tokamak equipped with the MarkIIGB divertor has been performed. This paper describes some of the experimental observations of divertor detachment...

Stationary and Transient Divertor Heat Flux Profiles and Extrapolation to ITER (2003)

Herrmann, A., Eich, T., Jachmich, S., Laux, M., Andrew, P., Bergmann, A., ...

Experimental results on divertor heat load measurements from ASDEX Upgrade and JET are discussed. Thereby three topics are considered: (i) parameter dependence of steady state heat flux profiles,...

Impurity-seeded plasma experiments on JET (2003)

Maddison, G. P., Brix, M., Budny, R., Charlet, M., Coffey, I., Cordey, J. G., ...

Scaling to larger tokamaks of high confinement plasmas with radiating edges, induced by impurities, is being studied through internationally collaborative experiments on JET. In campaigns till the...

Arcing at B4C-covered limiters exposed to a SOL-plasma (2003)

Laux, M., Schneider, W., Wienhold, P., Jüttner, B., Huber, A., Balden, M., ...

Plasma sprayed B4C-layers considered as wall coatings for the W7X stellarator have been studied during and after exposure to TEXTOR and after arcing experiments in vacuum. Arcing through the B₄C...

ELM energy and particle losses and their extrapolation to burning plasma experiments (2003)

Loarte, A., Saibene, G., Sartori, R., Becoulet, M., Horton, L., Eich, T., ...

Analysis of Type I ELMs from present experiments shows that ELM energy losses decrease with increasing pedestal plasma collisionality (ν*ped) and/or increasing τFront║, where...

Comparing scrape-off layer and divertor physics in JET pure He and D discharges (2003)

Pitts, R. A., Andrew, P., Andrew, Y., Becoulet, C., Coffey, I., Coster, D., ...

Though helium plasmas are one option for the low activation phase of ITER, little effort has thus far been devoted to studying them in a large, diverted tokamak. A recent campaign on JET has...

Role of sawtooth in avoiding impurity accumulation and maintaining good confinement in JET radiative mantle discharges (2003)

Nave, M. F. F., Rapp, J., Bolzonella, T., Dux, R., Mantsinen, M. J., Budny, R., ...

Impurity injection in the JET ELMy H-mode regime has produced high-confinement, quasi-steady-state plasmas with densities close to the Greenwald density. However, at large Ar densities, a sudden loss...

Tomographic reconstruction of 2D line radiation distribution in the JET MkIIGB divertor (2003)

Huber, A., Coad, P., Coster, D., Ingesson, L. C., Itami, K., Jachmich, S., ...

A 2D-tomographic reconstruction of D- and C III-emission distribution in L-mode, density limit discharge has been performed and compared with results from other diagnostics (KL2, KS3). The observed...

Towards the realization on JET of an integrated H-mode scenario for ITER (2003)

Ongena, J., Monier-Garbet, P., Suttrop, W., Andrew, P., Bécoulet, M., Budny, R., ...

ELMy H-Mode experiments at JET since 2000 have focussed on the steady state and simultaneous realization of the ITER QDT=10 requirements in the normalized parameters for density, confinement and...

Reduction of divertor heat load in JET ELMy H-modes using impurity seeding techniques (2003)

Rapp, J., Monier-Garbet, P., Andrew, P., Dumortier, P., Eich, T., Fundamenski, W., ...

One of the most severe problems for fusion reactors is the power load on the divertor target plates. In order to reduce the power load in the divertor radiation cooling by seeding of impurities is...

Divertor detachment during pure helium plasmas in JET (2003)

Wischmeier, M., Coster, D., Bonnin, X., Eich, T., Huber, A., Ingesson, C., ...

A campaign of pure helium discharges in the JET tokamak equipped with the MarkIIGB divertor has been performed. This paper describes some of the experimental observations of divertor detachment...

Impurity-seeded plasma experiments on JET (2003)

Maddison, G. P., Brix, M., Budny, R., Charlet, M., Coffey, I. H., Cordey, J. G., ...

This version is available at the following URL: http://dx.doi.org/10.1088/0029-5515/43/1/306

Improved ELM scaling with impurity seeding in JET (2003)

Maddison, G. P., Budny, I. L., Dumortier, P., Jachmich, S., Loarte, A., Messiaen, A. M., ...

This version is available at the following Publisher URL: http://stacks.iop.org/0741-3335/45/1657

Divertor detachment during pure helium plasmas in JET (2003)

Wischmeier, M., Coster, D., Bonnin, X., Eich, T., Huber, A., Ingesson, C., ...

A campaign of pure helium discharges in the JET tokamak equipped with the MarkIIGB divertor has been performed. This paper describes some of the experimental observations of divertor detachment...

Density limits in helium plasmas at JET (2003)

Rapp, J., Huber, A., Ingesson, L. C., Jachmich, S., Matthews, G. F., Philipps, V., ...

Recently at JET a pure helium campaign has been performed. The exploration of the density limit in L-mode limiter as well as L-mode and H-mode diverted plasmas was one of the main objectives. In...

Comparing scrape-off layer and divertor physics in JET pure He and D discharges (2003)

Pitts, R. A., Andrew, P., Andrew, Y., Becoulet, M., Coffey, I., Coster, D., ...

Though helium plasmas are one option for the low activation phase of ITER, little effort has thus far been devoted to studying them in a large, diverted tokamak. A recent campaign on JET has...

Overview of JET results (2003)

Pamela, J., Solano, E. R., Adams, J. M., Agarici, G., Agarici, M., Akhter, H., ...

Scientific and technical activities on JET focus on the issues likely to affect the ITER design and operation. Our understanding of the ITER reference mode of operation, the ELMy H-mode, has...

ELM energy and particle losses and their extrapolation to burning plasma experiments. (2003)

Loarte, A., Saibene, G., Sartori, R., Becoulet, M., Horton, L., Eich, T., ...

Proc. of the 15th Internat.Conf.on Plasma Surface Interactions in Controlled Fusion Devices (PSI-15), Gifu, J, May 27-31, 2002

Confinement properties of high density impurity seeded ELMy H- mode discharges at low and high triangularity on JET (2002)

Dumortier,P., Andrew,P., Bonheure,G., Budny,R. V., Buttery,R., Charlet,M., ...

The design value for ITER is based on operation at n/n(GW) = 0.85, beta(n) = 1.8 and H98(y, 2) = 1. These values have been routinely achieved in JET in argon seeded ELMy H-mode discharges in...

Seeding of impurities in JET H-mode discharges to mitigate the impact of ELMs (2002)

Jachmich,S., Maddison,G., Beurskens,M. N. A., Dumortier,P., Eich,T., Messiaen,A., ...

ELMy H-mode is one of the foreseen operational scenarios for ITER-FEAT. Good confinement and density is usually associated with Type I ELMs, which, however, will have a severe impact on the divertor...

High density operation at JET by pellet refuelling (2002)

Lang,P. T., Alper,B., Baylor,L. R., Beurskens,M., Cordey,J. G., Dux,R., ...

Several approaches are used at JET to achieve operation at high density with good energy confinement. One of them is the injection of solid fuel pellets to realize efficient particle refuelling by...

Characteristics and scaling of energy and particle losses during Type I ELMs in JET H-modes (2002)

Loarte,A., Becoulet,M., Saibene,G., Sartori,R., Campbell,D. J., Eich,T., ...

Recent experiments on the Type I ELMy H-mode regime performed at JET with improved diagnostics have expanded the range of parameters for the study of Type I ELM energy and particle losses. Deviations...

ELM mitigation by nitrogen seeding in the JET gas box divertor (2002)

Rapp,J., Eich,T., Von Hellermann,M., Herrmann,A., Ingesson,L. C., Jachmich,S., ...

One of the most severe problems for fusion reactors is the power load on the divertor target plates. Technically only power loads of less than 10 MW m(-2) are acceptable. However, strong edge...

High density, high performance high-confinement-mode plasmas in the Joint European Torus (JET) (2002)

Suttrop,W., Ongena,J., Becoulet,M., Cordey,J. G., Dumortier,P., Huysmans,G. T. A., ...

Recent experiments at the Joint European Torus [Rebut , Fusion Eng. Des. 22, 7 (1993)] aim to improve confinement quality in high-confinement-mode (H-mode) plasmas at high densities. Energy...

Optimization of pellet scenarios for long pulse fuelling to high densities at JET (2002)

Lang,P. T., Alper,B., Baylor,L. R., Beurskens,M., Cordey,J. G., Dux,R., ...

Pellet injection was investigated for its fuelling capability to high densities in ELMy H mode discharges at JET. Applying the high field side launch system, optimized refuelling scenarios were...

Confinement properties of high density impurity seeded ELMy H- mode discharges at low and high triangularity on JET (2002)

Dumortier, P., Andrew, P., Bonheure, G., Budny, R. V., Buttery, R., Charlet, M., ...

The design value for ITER is based on operation at n/n(GW) = 0.85, beta(n) = 1.8 and H98(y, 2) = 1. These values have been routinely achieved in JET in argon seeded ELMy H-mode discharges in...

Seeding of impurities in JET H-mode discharges to mitigate the impact of ELMs (2002)

Jachmich, S., Maddison, G., Beurskens, M. N. A., Dumortier, P., Eich, T., Messiaen, A., ...

ELMy H-mode is one of the foreseen operational scenarios for ITER-FEAT. Good confinement and density is usually associated with Type I ELMs, which, however, will have a severe impact on the divertor...

Optimization of pellet scenarios for long pulse fuelling to high densities at JET (2002)

Lang, P. T., Alper, B., Baylor, L. R., Beurskens, M., Cordey, J. G., Dux, R., ...

Pellet injection was investigated for its fuelling capability to high densities in ELMy H mode discharges at JET. Applying the high field side launch system, optimized refuelling scenarios were...

High density operation at JET by pellet refuelling (2002)

Lang, P. T., Alper, B., Baylor, L. R., Beurskens, M., Cordey, J. G., Dux, R., ...

Several approaches are used at JET to achieve operation at high density with good energy confinement. One of them is the injection of solid fuel pellets to realize efficient particle refuelling by...

Characteristics and scaling of energy and particle losses during Type I ELMs in JET H-modes (2002)

Loarte, A., Becoulet, M., Saibene, G., Sartori, R., Campbell, D. J., Eich, T., ...

Recent experiments on the Type I ELMy H-mode regime performed at JET with improved diagnostics have expanded the range of parameters for the study of Type I ELM energy and particle losses. Deviations...

ELM mitigation by nitrogen seeding in the JET gas box divertor (2002)

Rapp, J., Eich, T., Von Hellermann, M., Herrmann, A., Ingesson, L. C., Jachmich, S., ...

One of the most severe problems for fusion reactors is the power load on the divertor target plates. Technically only power loads of less than 10 MW m(-2) are acceptable. However, strong edge...

High density, high performance high-confinement-mode plasmas in the Joint European Torus (JET) (2002)

Suttrop, W., Ongena, J., Becoulet, M., Cordey, J. G., Dumortier, P., Huysmans, G. T. A., ...

Recent experiments at the Joint European Torus [Rebut , Fusion Eng. Des. 22, 7 (1993)] aim to improve confinement quality in high-confinement-mode (H-mode) plasmas at high densities. Energy...

Optimization of pellet scenarios for long pulse fuelling to high densities at JET (2002)

Lang, P. R., Alper, B., Baylor, L. R., Beurskens, M., Cordey, J. G., Dux, R., ...

This version is available at the following URL: http://dx.doi.org/10.1088/0029-5515/42/4/303

High density operation at JET by pellet refueling (2002)

Lang, P. R., Alper, B., Baylor, L. R., Beurskens, M., Cordey, J. G., Dux, R., ...

This version is available at the following Publisher URL: http://dx.doi.org/10.1088/0741-3335/44/9/310

ELM mitigation by nitrogen seeding in the JET gas box divertor (2002)

Rapp, J., Eich, T., Von Hellermann, M., Herrmann, A., Ingesson, L. C., Jachmich, S., ...

This version is available at the following Publisher URL: http://dx.doi.org/10.1088/0741-3335/44/6/302

High density, high performance high-confinement-mode plasmas in the Joint European Torus (JET) (2002)

Suttrop, W., Ongena, J., Becoulet, M., Cordey, J. G., Dumortier, P., Huysmans, G. T. A., ...

Recent experiments at the Joint European Torus [Rebut , Fusion Eng. Des. 22, 7 (1993)] aim to improve confinement quality in high-confinement-mode (H-mode) plasmas at high densities. Energy...

Recent progress on JET towards the ITER reference mode of operation at high density (2001)

Ongena, J., Suttrop, W., Becoulet, M., Cordey, G., Dumortier, P., Eich, Th., ...

This version is available at the following Publisher URL: http://dx.doi.org/10.1088/0741-3335/43/12A/302

Recent progress on JET towards the ITER reference mode of operation at high density (2001)

Ongena, J., Suttrop, W., Becoulet, M., Cordey, G., Dumortier, P., Eich, T., ...

Recent progress towards obtaining high density and high confinement in JET as required for the ITER reference scenario at Q = 10 is summarized. Plasmas with simultaneous confinement H-98(y.2) = 1 and...

Efficiency of transport suppression due to ExB flow shear : a parameter study (2000)

Jachmich, S., Weynants, R.

This version is available at the following Publisher URL: http://dx.doi.org/10.1088/0741-3335/42/5A/315

Enhanced particle confinement and turbulence reduction due to Exb shear in the TEXTOR-tokamak (2000)

Boedo, J., Gray, D., Jachmich, S., Conn, R., Terry, G. P., Tynan, G., ...

This version is available at the following URL: http://dx.doi.org/10.1088/0029-5515/40/7/309

Turbulent transport and turbulence in radiative I-mode plasmas in TEXTOR-94 (2000)

Boedo, J., Ongena, J., Sydora, R., Gray, D., Jachmich, S., Conn, R., ...

This version is available at the following URL: http://dx.doi.org/10.1088/0029-5515/40/2/306