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Publié par | DIRECTORATE-GENERAL-FOR-RESEARCH-AND-INNOVATION |
Nombre de lectures | 32 |
Langue | English |
Poids de l'ouvrage | 14 Mo |
Extrait
EUR 11058 EN
SCHLOSS RINGBERG (near LakeTegernsee, Bavaria)
FEDERAL REPUBLIC OF GERMANY
WORKSHOP ON
WENDELSTEIN VII-X
PROCEEDINGS OF THE
WORKSHOP ON WENDELSTEIN Vll-X
SCHLOSS RINGBERG
18-20 March, 1987
Published by
COMMISSION OF THE EUROPEAN COMMUNITIES
Directorate-General XII - Fusion Programme
Brussels, Belgium WORKSHOP ON WENDELSTEIN VII-X SCHLOSS RINGBERG (NEAR LAKE TEGERNSEE, BAVARIA)
FEDERAL REPUBLIC OF GERMANY
Proceedings of the
WORKSHOP ON
WENDELSTEIN VII-X
18-20 March, 1987
Edited by
F. RAU
Max-Planck-Institut für Plasmaphysik
Euratom-IPP Association
8046 Garching bei München
Federal Republic of Germany
and
G.G. LEOTTA
Commission of the European Communities
Directorate-General ΧΠ - Fusion Programme
í04ft?Bnisséls, Belgium
COMMISSION OF THE EUROPEAN COMMUNITIES
Directorate-General ΧΠ - Fusion Programme
Brussels, Belgium Manuscript completed in June 1987
Copyright © 1987 ECSC-EEC-EAEC (Euratom), Brussels and Luxembourg
EUR 11058 EN
euro cataloguing in publication data (further data at end of book)
Proceedings of the WORKSHOP ON WENDELSTEIN VII-X
Schloss Ringberg (near Lake Tegernsee, Bavaria), Federal Republic of Germany
18 - 20 March, 1987
1. The Wendelstein VII-X experiment, its characteristic properties regarding equilibrium, stability, transport
behaviour, the expected parameter range, and its dimensions are discussed.
2. Comparison is made between four different lines of modular stellarator configurations, resulting in the choice of
Helias-type configurations, from which the future large Garchingr experiment, Wendelstein, VII-X, will be
defined in an effort to combine systems having elevated stable beta values with those of vanishing bootstrap current.
3. Optimization studies for the Wendelstein VII-X configuration.
4. RAU, F., et al., Proceedings of the WORKSHOP ON WENDELSTEIN VII-X, Schloss Ringberg (near Lake Tegern
see, Bavaria), Federal Republic of Germany (1 volume).
5. Commission of the European Communities (CEC) — Directorate-General XII — Fusion programme,
1049 Brussels, Belgium.
Published for the
COMMISSION OF THE EUROPEAN COMMUNITIES
Directorate-General XIII
Telecommunications, Information, Industries and Innovation
Bâtiment Jean Monnet, LUXEMBOURG
by the
OFFICE FOR OFFICIAL PUBLICATIONS OF THE EUROPEAN COMMUNITIES,
LUXEMBOURG
ISBN 92-825-7480-6 (1 volume)
Catalogue number : j
Legal notice
Neither the Commission of the European Communities nor any person acting on behalf of the Commission is respon
sible for the use which might be made of the following information.
All rights reserved
No part of this book, protected by this copyright, may be reproduced or utilized in any form by photostat, microfilm
or by any other information and retrieval system, without permission from the copyright owner.
Printed in Belgium WORKSHOP ON WENDELSTEIN VII-X
Schloss Ringberg, 18-20 March 1987
CONTENTS
Page
G. Grieger Opening i
H. Wobig Options for Wendelstein Vn-X 3
J. Nührenberg Stability Analysis of W VII-X Configurations 29
and R. Zilie
presented by J. Nührenberg
F. Herrnegger Equilibrium Calculations and Mode Analysis 4
P. Merkel Free Boundary Stellarator Equilibria 61
W. Lotz Monte-Carlo Simulation of Neoclassical Transport and Loss Rates
in Stellarators and Tokamaks9
H. Wobig Particle Orbits in W VII-X Configurations 93
A. Montvai Bootstrap Current in the Long Mean Free Path Regime 115
P. Merkel Calculation of Coils for Stellarator Equilibria 12
J. Kißlinger Coil Systems for Modular Heliac Configurations 145
J. Kißlinger Coil Systems for Modular Heliass 157
F. Rau Configuration WVII-X-1D 173
F. Rau Bean-Shaped Advanced Stellarator Experiment BSX 5-2 189
E. Harmeyer Forces and Stresses in W VII-X Coil Systems 21
A. Ulbricht Report on Results of the Euratom Coil in the Large Coil Task (LCT) 251
v W. Maurer Superconductors for W VII-X Coils 291
J. Sapper W VII-X, A First Estimate of the Technical Feasibility and of the
Investment Costs9
H. Maassberg Neutral Beam Injection in W VII-X (HS-4-8)
and the Fast Ion Population 30
F.P. Penningsfeld Neutral Injection for W VII-X 327
and E. Speth
presented by F. P. Penningsfeld
J. Junker Expected Plasma Parameters in W VII-X 345
H. Renner On Experiment W VII-X 361
G. Grieger Aims of the Wendelstein VII-X Experiment 383
K. Lackner Comments on W VII-X 395
H. Wobig Summary 40
List of participants 411
VI Ringberg, March 1987
Paper No. 1
OPENING OF THE
WORKSHOP ON WENDELSTEIN VIIX
G. Grieger
Max-Planck-Institutfür Plasmaphysik
Euratom IPP Association
D-8046 Garching bei München
Federal Republic of Germany
Introduction ; Historical Background
• Results of the 'Classical' Stellarator
WENDELSTEIN VIIA
Plasma BuildUp without Ohmic Current
Improvements to High Plasma Energy Density
Reduction of Ion Losses by Electrical Field
Influence of the Stellarator Properties on the Plasma Confinement
Rational t-Values
»· Improvements by Use of Non—Axisymmetry
Advanced Stellarator
Reduction of Secondary Currents —*■ Beta
Drift Optimization —► Confinement
• Decision on the Programme of IPP-Garching, 1981 - 1982 :
- W VII-AS : Demonstration of Basic Principles of an Advanced Stellarator
Immediate Definition Possible
- W VII-X : Further Optimization as Successive Step
Requires More Time and Better Tools
• Today :
- This Optimization is Successful
- Several Options Exist
- Concentration Required on One Line Procedure of Workshop
Four Options for W VII-X
Comparison of Properties :
- Coil Systems, Geometry, Fields and Forces
- Engineering Considerations for Construction
4
Considerations to Define WENDELSTEIN VII-X
Conlusions
Remarks on the Four Options for W VII-X :
- Computations are for Given Size and Field
- The Experiment W VII-X might have Differing Values
- The Present Considerations are still a First Approach of Tentative Nature