Scientific Commons: F. Sardei

island divertor operation and the modelling of the results with the EMC3/EIRENE code- confinement issues with emphasis on the differences to tokamaks (isotope effect, density scaling, lack of profile...

Island divertor experiments on the Wendelstein 7-AS stellarator (2007)

K. Mccormick, P. Grigull, R. Burhenn, R. Brakel, H. Ehmler, Y. Feng, ...

3D edge transport analysis of ITER start-up configuration for limiter power load assessment (2007)

Kobayashi, M., Feng, Y., Loarte, A., Federici, G., Strohmayer, G., Shimada, M., ...

Divertor transport study in the large helical device (2007)

Kobayashi, M., Feng, Y., Masuzaki, S., Shoji, M., Miyazawa, J., Morisaki, T., ...

Simulations of ITER start-up and assessment of limiter power loads (2007)

Federici, G., Zolotukhin, O., Kobayashi, M., Loarte, A., Strohmayer, G., Tanga, A., ...

Numerical study on CX-neutral transport and wall-sputtering in W7-AS diverted plasmas (2007)

Feng, Y., Sardei, F., Grigull, P., McCormick, K., Kisslinger, J., Reiter, D., ...

Numerical Study on CX-Neutral Transport and Wall-Sputtering in W7-AS Diverted Plasmas (2007)

Feng, Y., Sardei, F., Grigull, P., McCormick, K., Kisslinger, J., Reiter, D., ...

Simulations of ITER start-up and assessment of limiter power loads (2007)

Federici, G., Zolotukhin, O., Kobayashi, M., Loarte, A., Strohmayer, G., Tanga, A., ...

Non-axisymmetric SOL-transport study for tokamaks and stellarators (2007)

Sardei, F., Feng, Y., Kisslinger, J., Grigull, P., Kobayashi, M., Harting, D., ...

Physics of Island Divertor Plasmas in Stellarators (2006)

Feng, Y., Sardei, F., Grigull, P., McCormick, K., Kisslinger, J., Reiter, D.

Plasma and Neutral Transport Study of Local Island Divertor Configuration in Large Helical Device Edge Region with 3D Monte Carlo Codes (2006)

Kobayashi, M, Reiter, D., Feng, Y., Morisaki, T., Masuzaki, S., Sardei, F., ...

Physics of island divertors as highlighted by the example of W7-AS (2006)

Feng, Y., Sardei, F., Grigull, P., McCormick, K., Kisslinger, J., Reiter, D.

Detachment Phenomena in LHD Compared to W7-AS (2006)

Miyazawa, J., Masuzaki, S., Yamada, H., Sakamoto, R., Peterson, B.J., Shoji, M., ...

Recent Results of LID Experiment on LHD (2006)

Morisaki, T., Masuzaki, S., Kobayashi, M., Sakamoto, R., Tanaka, K., Narihara, K., ...

Self-sustained detachment observed in LHD and comparison with detachment and Marfe in W7-AS (2006)

Miyazawa, J., Masuzaki, S., Yamada, H., Sakamoto, R., Peterson, B.J., Shoji, M., ...

3D Divertor Transport Study of the Local Island Divertor Configuration in the Large Helical Device (2006)

Kobayashi, M., Feng, Y., Reiter, D., Morisaki, T., Masuzaki, S., Sardei, F., ...

3D studies of the island divertor transport in W7-X (2006)

Sharma, D., Sardei, F., Feng, Y.

A 3D Monte-Carlo study of the W7-X island divertor transport for different magnetic configurations (2006)

Sharma, D., Feng, Y., Sardei, F.

Recent Results of LID Experiment on LHD (2006)

Morisaki, T., Masuzaki, S., Kobayashi, M., Sakamoto, R., Tanaka, K., Narihara, K., ...

3D study of energy transport and role of stochasticity in the W7-X edge (2006)

Sharma, D., Feng, Y., Sardei, F.

Physics of the geometry-related detachment stability in W7-AS (2005)

Feng,Y., Sardei,F., Kisslinger,J., Grigull,P., McCormick,K., Reiter,D., ...

A simple highly accurate field-line mapping technique for three-dimensional Monte Carlo modeling of plasma edge transport (2005)

Feng,Y., Sardei,F., Kisslinger,J.

W7-AS: One step of the Wendelstein stellarator line (2005)

Wagner,F., Baeumel,S., Baldzuhn,J., Basse,N., Brakel,R., Burhenn,R., ...

Three-dimensional Monte Carlo simulations of W7-X plasma transport: density control and particle balance in steady-state operations (2005)

Sharma,D., Feng,Y., Sardei,F., Reiter,D.

Local island divertor experiments on LHD (2005)

Morisaki,T., Masuzaki,S., Komori,A., Ohyabu,N., Kobayashi,M., Feng,Y., ...

Pumping capability and particle balance in W7-X: a self-consistent 3D study (2005)

Sharma,D., Feng,Y., Sardei,F., Kisslinger,J., Grote,H., Grigull,P., ...

Neutral pressure behavior for diverted discharges in the Wendelstein 7-AS Stellarator (2005)

McCormick,K., Grigull,P., Burhenn,R., Ehmler,H., Feng,Y., Giannone,L., ...

Impurity retention under enhanced recycling conditions in W7-AS (2005)

Feng,Y., Sardei,F., Grigull,P., McCormick,K., Burhenn,R., Wagner,F., ...

Role of stochasticity in the W7-X edge transport (2005)

Sharma,D., Feng,Y., Sardei,F.

Physics of the geometry-related detachment stability in W7-AS (2005)

Feng, Y., Sardei, F., Kisslinger, J., Grigull, P., McCormick, K., Reiter, D., ...

A simple highly accurate field-line mapping technique for three-dimensional Monte Carlo modeling of plasma edge transport (2005)

Feng, Y., Sardei, F., Kisslinger, J.

W7-AS: One step of the Wendelstein stellarator line (2005)

Wagner, F., Baeumel, S., Baldzuhn, J., Basse, N., Brakel, R., Burhenn, R., ...

Three-dimensional Monte Carlo simulations of W7-X plasma transport: density control and particle balance in steady-state operations (2005)

Sharma, D., Feng, Y., Sardei, F., Reiter, D.

Local island divertor experiments on LHD (2005)

Morisaki, T., Masuzaki, S., Komori, A., Ohyabu, N., Kobayashi, M., Feng, Y., ...

Pumping capability and particle balance in W7-X: a self-consistent 3D study (2005)

Sharma, D., Feng, Y., Sardei, F., Kisslinger, J., Grote, H., Grigull, P., ...

Neutral pressure behavior for diverted discharges in the Wendelstein 7-AS Stellarator (2005)

McCormick, K., Grigull, P., Burhenn, R., Ehmler, H., Feng, Y., Giannone, L., ...

Impurity retention under enhanced recycling conditions in W7-AS (2005)

Feng, Y., Sardei, F., Grigull, P., McCormick, K., Burhenn, R., Wagner, F., ...

Role of stochasticity in the W7-X edge transport (2005)

Sharma, D., Feng, Y., Sardei, F.

Implementation of the EMC3-EIRENE code on TEXTOR-DED: accuracy and convergence study (2004)

Kobayash,M., Feng,Y., Sardei,F., Reiter,D., Reiser,D., Finken,K. H.

Connection length calculation for the divertor relevant vacuum magnetic configurations of W7-X (2004)

Feng,Y., Liu,R., Kisslinger,J., Sardei,F.

Divertors for Helical Devices: Concepts, Plans, Results, and Problems (2004)

König,R., Grigull,P., McCormick,K., Feng,Y., Ehmler,H., Gadelmeier,F., ...

Implementation of the EMC3-EIRENE code on TEXTOR-DED: accuracy and convergence study (2004)

Kobayash, M., Feng, Y., Sardei, F., Reiter, D., Reiser, D., Finken, K. H.

Connection length calculation for the divertor relevant vacuum magnetic configurations of W7-X (2004)

Feng, Y., Liu, R., Kisslinger, J., Sardei, F.

Divertors for Helical Devices: Concepts, Plans, Results, and Problems (2004)

König, R., Grigull, P., McCormick, K., Feng, Y., Ehmler, H., Gadelmeier, F., ...

3D numerical transport study of the edge ergodized plasma in TEXTOR-DED (2004)

Kobayashi, M., Feng, Y., Sardei, F., Reiter, D., Finken, K.H., Reiser, D.

3D numerical transport study of the edge ergodized plasma in TEXTOR-DED (2004)

Kobayashi, M., Feng, Y., Sardei, F., Finken, K. H., Reiser, D., Reiter, D.

This version is available at the following URL: http://dx.doi.org/10.1088/0029-5515/44/6/S07

Island divertor experiments on the Wendelstein 7-AS stellarator (2003)

McCormick,K., Grigull,P., Burhenn,R., Brakel,R., Ehmler,H., Feng,Y., ...

A promising new operational regime on the Wendelstein stellarator W7-AS has been discovered, fulfilling the conditions of optimal core behavior in combination with edge parameters suitable for...

Divertor operation in stellarators: results from W7-AS and implications for future devices (2003)

Grigull,P., McCormick,K., Renner,H., Masuzaki,S., König,R., Baldzuhn,J., ...

The research on divertors for stellarators is at the beginning. Extensive studies are being prepared on large helical device (LHD) and W7-X. W7-AS is now being operated with an open island divertor...

Influence of magnetic field configurations on divertor plasma parameters in the W7-AS stellarator (2003)

Grigull,P., McCormick,K., Feng,Y., Werner,A., Brakel,R., Ehmler,H., ...

The new island divertor in W7-AS enables quasi steady-state operation with NBI at very high density including scenarios with stable detachment from the targets. Experiments with reversed B-field...

Major results from Wendelstein 7-AS stellarator (2003)

Wagner,F., Burhenn,R., Gadelmeier,F., Geiger,J., Hirsch,M., Laqua,H. P., ...

W7-AS operates with an island divertor, which utilises the natural edge islands of the low-shear stellarator configuration to divert the plasma. High densities (up to 4×1020m-3) and partly detached...

Effects of the New Island Divertor on the Plasma Performance in the W7-AS Stellarator (2003)

Grigull,P., McCormick,K., Baldzuhn,J., Burhenn,R., Brakel,R., Ehmler,H., ...

The island divertor in the W7-AS stellarator enables access to a new NBI-heated, high density operating regime with promising confinement properties. This regime — the High Density H-Mode —...

Impact of Island Geometry on Island Divertor Performance (2003)

Feng,Y., Sardei,F., Grigull,P., McCormick,K., Kisslinger,J., Reiter,D., ...

Optimization of the W7-X pumping system (2003)

Sharma,D., Feng,Y., Sardei,F., Grote,H., Grigull,P., Renner,H.

Modelling of island divertor physics and comparison to W7-AS experimental results (2003)

Feng,Y., Sardei,F., Grigull,P., McCormick,K., Giannone,L., Kisslinger,J., ...

Extensive parameter studies have been carried out with the EMC3-EIRENE code. Major code predictions, namely the absence of high recycling prior to detachment, additional momentum losses associated...

Improved Performance of the W7-AS Stellarator with the New Island Divertor (2003)

Brakel,R., Grigull,P., McCormick,K., Burhenn,R., Feng,Y., Sardei,F., ...

The island divertor concept has successfully been realized at W7-AS. The divertor gives access to a new NBI-heated high density regime with densities up to 4×10²⁰m-3 and energy confinement well...

Island divertor experiments on the Wendelstein 7-AS stellarator (2003)

McCormick,K., Grigull,P., Burhenn,R., Brakel,R., Ehmler,H., Feng,Y., ...

Major results from Wendelstein 7-AS stellarator (2003)

Wagner,F., Burhenn,R., Gadelmeier,F., Geiger,J., Hirsch,M., Laqua,H. P., ...

Island divertor experiments on the Wendelstein 7-AS stellarator (2003)

McCormick, K., Grigull, P., Burhenn, R., Brakel, R., Ehmler, H., Feng, Y., ...

A promising new operational regime on the Wendelstein stellarator W7-AS has been discovered, fulfilling the conditions of optimal core behavior in combination with edge parameters suitable for...

Divertor operation in stellarators: results from W7-AS and implications for future devices (2003)

Grigull, P., McCormick, K., Renner, H., Masuzaki, S., König, R., Baldzuhn, J., ...

The research on divertors for stellarators is at the beginning. Extensive studies are being prepared on large helical device (LHD) and W7-X. W7-AS is now being operated with an open island divertor...

Influence of magnetic field configurations on divertor plasma parameters in the W7-AS stellarator (2003)

Grigull, P., McCormick, K., Feng, Y., Werner, A., Brakel, R., Ehmler, H., ...

The new island divertor in W7-AS enables quasi steady-state operation with NBI at very high density including scenarios with stable detachment from the targets. Experiments with reversed B-field...

Major results from Wendelstein 7-AS stellarator (2003)

Wagner, F., Burhenn, R., Gadelmeier, F., Geiger, J., Hirsch, M., Laqua, H. P., ...

W7-AS operates with an island divertor, which utilises the natural edge islands of the low-shear stellarator configuration to divert the plasma. High densities (up to 4×1020m-3) and partly detached...

Effects of the New Island Divertor on the Plasma Performance in the W7-AS Stellarator (2003)

Grigull, P., McCormick, K., Baldzuhn, J., Burhenn, R., Brakel, R., Ehmler, H., ...

The island divertor in the W7-AS stellarator enables access to a new NBI-heated, high density operating regime with promising confinement properties. This regime — the High Density H-Mode —...

Impact of Island Geometry on Island Divertor Performance (2003)

Feng, Y., Sardei, F., Grigull, P., McCormick, K., Kisslinger, J., Reiter, D., ...

Optimization of the W7-X pumping system (2003)

Sharma, D., Feng, Y., Sardei, F., Grote, H., Grigull, P., Renner, H.

Modelling of island divertor physics and comparison to W7-AS experimental results (2003)

Feng, Y., Sardei, F., Grigull, P., McCormick, K., Giannone, L., Kisslinger, J., ...

Extensive parameter studies have been carried out with the EMC3-EIRENE code. Major code predictions, namely the absence of high recycling prior to detachment, additional momentum losses associated...

Improved Performance of the W7-AS Stellarator with the New Island Divertor (2003)

Brakel, R., Grigull, P., McCormick, K., Burhenn, R., Feng, Y., Sardei, F., ...

The island divertor concept has successfully been realized at W7-AS. The divertor gives access to a new NBI-heated high density regime with densities up to 4×10²⁰m-3 and energy confinement well...

Island divertor experiments on the Wendelstein 7-AS stellarator (2003)

McCormick, K., Grigull, P., Burhenn, R., Brakel, R., Ehmler, H., Feng, Y., ...

A new quasi-stationary, very high density plasma regime on the W7-AS stellarator (2002)

Jaenicke,R., Bäumel,S., Baldzuhn,J., Brakel,R., Burhenn,R., Ehmler,H., ...

Stellarators have the intrinsic property of steady state operation. However, on present-day stellarators the pulse length is usually not only limited due to technical reasons, but also by physical...

The divertor program in stellarators (2002)

König,R., Grigull,P., McCormick,K., Feng,Y., Kisslinger,J., Komori,A., ...

Two significiant problems that need to be solved for any future fusion device are heat removal and particle control. A very promising method to attack these problems in tokamaks and helical devices...

New advanced operational regime on the W7-AS stellarator (2002)

McCormick,K., Grigull,P., Burhenn,R., Brakel,R., Ehmler,H., Feng,Y., ...

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...

Transport in island divertors: physics, 3D modelling and comparison to first experiments on W7-AS (2002)

Feng,Y., Sardei,F., Grigull,P., McCormick,K., Kisslinger,J., Reiter,D., ...

Basic plasma transport properties in island divertors are compared to those of standard tokamak divertors. A realistic plasma transport modelling of high-density discharges in island divertors has...

Island divertor transport modelling and comparison with experiment (2002)

Feng,Y., Sardei,F., Kisslinger,J., Reiter,D., Igitkhanov,Y.

A realistic modelling of island divertor transport, taking into account the complex 3D island structures and the discontinuous divertor plates and baffles, has become possible by the development, of...

Transport study on the W7-AS island divertor. Physics, modelling and comparison to experiment (2002)

Feng,Y., Sardei,F., Grigull,P., McCormick,K., Kisslinger,J., Giannone,L., ...

Island divertor experiments on the W7-AS stellarator (2002)

Gadelmeier,F., Grigull,P., McCormick,K., Brakel,R., Burhenn,R., Ehmler,H., ...

Overview on recent W7-AS results (2002)

Jaenicke,R., Bäumel,S., Baldzuhn,J., Brakel,R., Burhenn,R., Ehmler,H., ...

Plasma performance of Wendelstein 7-AS with the new boundary-island divertor modules (2002)

McCormick,K., Grigull,P., Burhenn,R., Brakel,R., Ehmler,H., Feng,Y., ...

Transport in island divertors: physics, 3D modelling and comparison to first experiments on W7-AS (2002)

Feng, Y., Sardei, F., Grigull, P., McCormick, K., Kisslinger, J., Reiter, D., ...

Basic plasma transport properties in island divertors are compared to those of standard tokamak divertors. A realistic plasma transport modelling of high-density discharges in island divertors has...

Island divertor transport modelling and comparison with experiment (2002)

Feng, Y., Sardei, F., Kisslinger, J., Reiter, D., Igitkhanov, Y.

A realistic modelling of island divertor transport, taking into account the complex 3D island structures and the discontinuous divertor plates and baffles, has become possible by the development, of...

A new quasi-stationary, very high density plasma regime on the W7-AS stellarator (2002)

Jaenicke, R., Bäumel, S., Baldzuhn, J., Brakel, R., Burhenn, R., Ehmler, H., ...

Stellarators have the intrinsic property of steady state operation. However, on present-day stellarators the pulse length is usually not only limited due to technical reasons, but also by physical...

The divertor program in stellarators (2002)

König, R., Grigull, P., McCormick, K., Feng, Y., Kisslinger, J., Komori, A., ...

Two significiant problems that need to be solved for any future fusion device are heat removal and particle control. A very promising method to attack these problems in tokamaks and helical devices...

New advanced operational regime on the W7-AS stellarator (2002)

McCormick, K., Grigull, P., Burhenn, R., Brakel, R., Ehmler, H., Feng, Y., ...

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...

Transport study on the W7-AS island divertor. Physics, modelling and comparison to experiment (2002)

Feng, Y., Sardei, F., Grigull, P., McCormick, K., Kisslinger, J., Giannone, L., ...

Island divertor experiments on the W7-AS stellarator (2002)

Gadelmeier, F., Grigull, P., McCormick, K., Brakel, R., Burhenn, R., Ehmler, H., ...

Overview on recent W7-AS results (2002)

Jaenicke, R., Bäumel, S., Baldzuhn, J., Brakel, R., Burhenn, R., Ehmler, H., ...

Plasma performance of Wendelstein 7-AS with the new boundary-island divertor modules (2002)

McCormick, K., Grigull, P., Burhenn, R., Brakel, R., Ehmler, H., Feng, Y., ...

The Impact of the New Island Divertor on the Plasma Performance in the W7-AS Stellarator (2002)

Grigull, P., McCormick, K.., Burhenn, R., Brakel, R., Ehrmler, H., Feng, Y., ...

Transport in island divertors : physics, 3D modelling and comparison to first experiments on W7-AS (2002)

Feng, Y., Sardei, F., Grigull, K., McCormick, K., Kisslinger, J., Reiter, D., ...