COMITATO NAZIONALE PER LA RICERCA E PER LO SVILUPPO DELL'ENERGIA NUCLEARE E DELLE ENERGIE ALTERNATIVE EC 4 FOURTH INTERNATIONAL WORKSHOP ON E| EfTg ùira lira Baa <tó? B S >N CYCLOTRON EMISSION INIS-mf —10065 ROMA, MARCH 28-30, 1984 SERIE SIMPOSI Serie Simposi Edito dall'ENEA. Direzione Centrale Relazioni. Viale Regina Margherita, 125 - Roma Finito di stampare nel dicembre 1984 presso laSPEDS.r.l. Via del Pago Triopio, 39 - 00179 Roma COMITATO NAZIONALE PER LA RICERCA E PER LO SVILUPPO DELL'ENERGIA NUCLEARE E DELLE ENERGIE ALTERNATIVE EC-4 FOURTH INTERNATIONAL WORKSHOP ON ELECTRON CYCLOTRON EMISSION AND ELECTRON CYCLOTRON RESONANCE HEATING ROMA, MARCH 28-30, 1984 SERIE SIMPOSI The camera ready manuscript of this publication has been prepared by Ufficio Edizioni Scientifiche - Servizio Studi e Documentazione - (ENEA) Centro Ricerche Energia Frascati - C.P. 65 - 00044 Frascati, Rome, Italy. This Office will be glad to send further copies of this publication, on request. CONTENTS PAG. Preface VII List of Partecipants IX List of Authors XIII A.E. COSTLEY, E.A.M. BAKER, D.V. BARTLETT, D.J. CAMPBELL, M.G. KIFF, G.F. NEILL First Measurements of ECE from JET E.A.M. BAKER, D.V. BARTLETT, D.J. CAMPBELL, A.E. COSTLEY, D.J. DALY, A. DELLIS, L.C.J.M. de KOCK, J. FESSEY Overmoded Millimeter Waveguide Transmission System for the Jet ECE Diagnostic" 11 A. AIROLDI, A. OREFICE, G. RAMPONI ECE Simulation for D-Shaped Toroidal Plasmas and its Re- levance to JET 15 E.A.M. BAKER, D.V. BARTLETT, D.J. CAMPBELL, A.E. COSTLEY, A.E. HUBBARD, D.G. MOSS Absolute Calibration of the JET ECE System 23 D.V. BARTLETT An Interpretation Code for ECE Measurements on JET 27 S. ATZENI, G. VLAD The Contribution of Synchrotron Radiation *o the Energy Balance and Transport in an Advanced-Fuel Tokamak Reactor 35 L. LAURENT, D. BARTLETT Investigations on the Emission of Optically Thin Har- monics" 43 H. HSUAN Electron Cyclotron Heating in a Tokamak Reactor 49 R.A. CAIRNS, C.N. LASHMORE-DAVIES Flux Surface Averaging of the Diffusion Coefficient in Electron Cyclotron Resonance Heating 71 D. FARINA, M. LONTANO, R. POZZOLI Suprathermal Electrons in ECRH 77 R. WILHELM, V. ERCKMANN, G. JANZEN, G. MULLER, P.G. SCHULLER, K. SCHWORER, M. THUMM - W VII - A Team ECRH Experiments on the W VII-A Steliarator S3 P.G. SCHULLER, V. ERCKMANN, G. JANZEN, G. MULLER, E. RAUCHLE, M. THUMM, R. WILHELM Application of a Polarization Twist Reflector in ECRH Experiments 95 K. AUDENAERDE, J. BEYER, R. VERNON Quasi-Optical Techniques for ECRH 103 B.W. STALLARD, F.E. COEFFIELD, B. FELKER, J. TASKA, T.E. CHRISTENSEN, N.C. GALLAGHER Jr., D.W. SWEENEY Focusing Twist Reflector for Electron-Cyclotron Reso- nance Heating in the Tandem Mirror Experiment-Upgrade 107 A. EBERHAGEN, D.J. CAMPBELL, S.E. KISSEL, V. MERTENS ECE-Diagnostics of the ASDEX-Tokamak Plasmas 115 G. CIMA, G. RAMPONI, A. SIMONETTO Fast Multichannel Heterodyne Radiometry on Thor Tokamak 133 M. TALVARD, L. LAURENT ECE Measurements with a Six Channel Fabry-Perot Inter- ferometer 139 D.A. BOYD Experimental Measurements on Non-Maxwellian Distribu- tions 145 A.K. RAM, G. FRANCIS, A. BERS Relati vistic Electromagnetic Instabilities Near Elec- tron Cyclotron Frequency and Harmonics 161 M. TUTTER, H.J. HARTFUSS, W VII- TEAM, NI GROUP Effect of Suprathermal Electrons on ECE-Spectra in W VII-A 167 J. HOW, G. MELIN, A. GIRARD First Results and Future Projects for Petula ECE Measurements 173 VI PREFACE The Fourth International Workshop on Electron Cyclotron Emis- sion and Electron Cyclotron Resonance Heating (EC-4) was held at the ENEA Research Center, Frascati, on 28-30 March 1984. The meeting was sponsored by the Italian Commission for Nuclear and Alternative Energy Sources (ENEA) in collaboration with the Commis- sion of European Communities. A total of 60 specialists attended the workshop. As in the past, the aim of the meeting was to provide and opportunity for special istis to discuss the most recent experimen- tal and theoretical developments in these two related areas and to exchange information and ideas. Five invited papers and 24 contri- buted papers were presented. The papers contained here are directly reproduced from the authors' manuscripts and the content and layout are theirs. We would like to thank Maria Poll doro and Lucilia Crescenti ni for their valuable assistance with the management of the workshop. M. Bornatici P. Buratti Physics Dept. "A. Volta" Associazione EURATOM-ENEA University of Pavia Centro Ricerche Energia Pavia Frascati VÌI LIST OF PARTICIPANTS - DENMARK HANSEN F.R. Ris0 National Laboratory LYNOV J.P. P.O. Box 49 MICHELSEN P. Roskilde 4000 (Denmark) FRANCE CANO R. EURATOM-CEA COTSAFTIS M. B.P. 6 LAURENT M. Fontenay-aux-Roses (France) TALVARD L. HOW J. CIG-GENG-CEA MELIN G. 85 X Grenoble Cedex 38041 (France) GERMANY, FEDERAL REPUBLIC OF CATTANEI G. Max-Planck Inst. fiir Plasmaphysik DERFLER H. 8046 Garching b. Munchen (F.R.G.) EBERHAGEN A. ERCKMANN V. KISSEL S. RENNER H. TUTTER M. ENGELMANN F. NET Team Max-Planck Inst. fiir Plasmaphysik 8046 Garching b. Munchen (F.R.G.) KUNTZE M. - Kerforschungszentrum Karlsruhe Postfact 3640 Karlsruhe 1 7500 (F.R.G.) SCHULLER P.G. -Inst. fiir Plasmaforschung THUMM M. Universitat Stuttgart WILHELM R. Phaffenwaldring 31 Stuttgart 80 (F.R.G.) IS ITALY ATZENI S. ENEA - CRE Frascati BURATTI P. C.P. 65 BERTALOT L. 00044 Frascati (Italy) CARDINALI A. LELLI R. TUDISCO 0. VLAD G. AIROLDI A. Istituto di Fisica del Plasma CIMA G. del CNR LONTANO M. Via Bassi ni, 15 MAROLI C. Milano (Italy) PETRILLO V. RAMPONI G. TARTARI U. BORNATICI M. Phys. Dept. A. Volta RUFFINA U. Via Bassi, 6 Pavia CORZANI T. University Trieste Trieste (Italy) SOUTH AFRICA DE VILLIERS J.A.M. Nucl. Development Cooperation of South Africa Priviite Bag X256 Pretoria (South Africa) SWITZERLAND TRAN M.Q. -Centre de Recherches en Physique des Plasmas 21, Av. des Bains Lausanne 1007 (Switzerland) UNITED KINGDOM COSTLEY A.E. JET BARTLETT D.V. Cui ham Laboratory BRUSATI M. Abingdon 0X14 3DB (United Kingdom) HUBBARD A.E. X COX M. UKAEA LASHMORE-DAVIES C. Cui ham Laboratory O'BRIEN M. Abingdon 0X14 3DB (United Kingdom) RIVIERE A.C. CAIRNS R.A. University of St. Andrews Dept. of Applied Mathematics North Haugh. St. Andrews, Fife KY16955 (United Kingdom) BAKER E.A.M. -National Physical Lab. Queens Roads Teddington Middlesex, T XII OLW (United Kingdom) USA BERS A. MIT Bldg. 38-260 Cambridge MA 02139 (USA) BOYD D. University of Maryland Dept. of Physics and Astronomy College Park MD 20742 (USA) STALLARD B. - Lawrence Livermore Nat. Lab. University of California P.O. Box 808 Livermore, CA 94550 (USA) AUDENAERDE K. - University of Wisconsin Dept. of Electrical Eng. 1415 Johnson Drive Madison, VI 53706 (USA) BATCHELOR D.B. - Fusion Division ORNL P.O. Box Y Oak Ridge, TN 37830 (USA) CHU T.K. - Princeton University HSUAN H. PPPL James Forrestal Campus P.O. Box 451 Princeton , NJ 08544 (USA) OVERSKEI D. - Doublet III Division GA Technologies Inc. P.O. Box 81608 San Diego, CA 92138 (USA) XI USSR NUSINOVICH G.S. Inst. Appi. Phys. Academy of Sciences Gorky (USSR) SERGEEV A.M. Inst. Appi. Phys. Academy of Sciences Vaviiova 38 Moscow 117942 (USSR) STEPANOV K.S. Kharkov Phys. Techn. Inst. Moscow 123182 (USSR) PARAIL V.V. Kurchatov Inst. Kurchatov Square Moscow 123182 (USSR) XII LIST OF AUTHORS AIROLDI A., 17 GALLAGHER N.C., Jr., 109 ATZENI S., 37 GIRARD A., 175 AUDEHAERDE K., 105 GRIEGER G., 85, 169 B GRltJULL P., 85 BAKER E.A.M., 11, 25 H BARTLETT D.V., 1, 25, 29, 45 HACKER H., 85, 169 BERS A-, 163 HARTFUSS H.J., 85, 169 BEYER J., 105 HOW J., 175 BOYD D.A., 147 HSUAN H., 51 C HUBBARD A.E., 25 CAIRNS R.A., 73 J CAMPBELL D.J., 1, 11, 25 JACKEL H-, 85, 169 CATTANEI G., 169 JAENICKE R., 85, 169 CHRISTENSEN T.E., 109 JANZEN G., 85, 97 CIMA G., 135 JUNKER J., 85, 169 COFFIELD F.E., 109 K COSTLEY A.E., 1, 11, 25 KICK M., 85, 169 D KIFF M.G., 1 DALY D.J., 11 KISSEL S.E., 117 de ROCK L.C.J.M., 11 KROISS H., 85, 169 DELLIS A., 11 KRUSCH K., 85, 169 DORST D., 85, 169 KUHNER G., 85, 169 E L EBERk ".EN A., 117 LASHOMORE-DAVIES C.N., 73 ELSKER A., 85, 169 LAURENT I,., 45, 141 ERCKHANN V., 85, 97, 169 LISTER G.G., 169 F LONTANO M., 79 FARINA D., 79 M FELKER B., 109 HAHN C, 85, 169 FESSY J., 11 MARLIER S., 85, 169 FRANCIS G., 163 MELIN G., 175 FREUDENBERGER K., 169 MERTENS V., 117 MOSS D.G., 25 MULLER G., 85, 97, 169 XIII N W NEILL G.F., 1 WELLER A., 85, 169 WILHELM R., 85, 97 0 WOBIG H., 85, 169 OHLENDORF W., 85, 169 WURSCHING E., 85, 169 OREFICE A., 17 Z OTT W., 169 P ZIPPE M., 85, 169 PENKINGSFELD F.-P., 169 POZZOLI R., 79 R RAM A.K., 163 RAMPONI G., 17, 135 RAU F., 85, 169 RAUCHLE E., 97 RENNER H-, 85, 169 RINGLER H., 85, 169 S SARDEI F., 85, 169 SCHULLER P.G., 85, 97 SCHWORER K., 85 SIMONETTO A., 135 SPETH E., 169 STALLARD B.W., 109 SWEENEY D.W., 109 T TALVARD M-, 141 TASKA J., 109 THUMM M., 85, 97 TOTTER M., 85, 169 VERNON R., 105 VLAD G., 37 XII FIRST MEASUREMENTS OF ECE FROM JET A.E. COSTLEY, E.A.M. BAKER1, D.V. BARTLETT, D.J. CAMPBELL, M.G. KIFF', G.F.