LA-8700-C n Conference Proceedings of the Third Symposium on the Physics and Technology of Compact Toroids in the Magnetic Fusion Energy Program Held at the Los Alamos National Laboratory Los Alamos, New Mexico December 2—4, 1980 c "(0 O a> 9 n& anna t LOS ALAMOS SCIENTIFIC LABORATORY Post Office Box 1663 Los Alamos. New Mexico 87545 An Affirmative Aution/f-qual Opportunity Fmployei This report was not edited by the Technical Information staff. This work was supported by the US Depart- ment of Energy, Office of Fusion Energy. DISCLAIM) R This report WJJ prepared as jn JLUOUIH of work sponsored by jn agency of ihc Untied Slates (.ovcrn- rneni Neither the United Suit's (iovci.iment nor anv a^cmy thereof, nor any HI theu employees, makes Jn> warranty, express or in,Hied, o( assumes any legal liability 01 responsibility for the jn-ur- aty. completeness, or usefulness of any information, apparatus, product, 01 process disiiosed, or rep- resents thai its use would not infringe privately owned rights. Reference herein to any specifu- com- mercial product process, or service by tradr name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommcniidlK>n, or favoring by the United Stales Government or any agency thereof. The views and opinions of authors expressed herein do not nec- essarily state 01 reflect those nf llic United Stales Government or any agency thereof. UfJITED STATES DEPARTMENT OF ENERGY CONTRACT W-7405-ENG. 36 LA-8700-C Conference UC-20 issued: March 1981 Proceedings of the Third Symposium on the Physics and Technology of Compact Toroids in the Magnetic Fusion Energy Program Heki at the Los Alamos National Laboratory Los Alamos, New Mexico Decamber 2—4, 1980 Compiled by Richard E. Siemon - DISCLAIMtP Preface These Proceedings document the third in a series of Compact Toroid (CT) symposia. Although all three symposia focused on the same topic, they differed substantially in format- This change in format reflects the change in the type of interaction desired by the symposium participants. Initially the interest was in getting acquainted with each others' work, but as communication and a sense of community increased, the Interest has shifted to the discussion of issues of common interest. The first symposium, held at Princeton in June 1978, was quite informal and consisted of oral presentations of new untested ideas as well as existing theoretical and experimental results. The only record of the conference consisted of copies of Vu-Graphs assembled following the meeting. The result was an increased awareness of the work and planning in the various facets of what was to become the CT community. The second CT symposium, held at Princeton in December 1979, was more formal with 60 four-page papers being published in the Procee ".ings as a documentation of the oral presentations. These papers and the attendance of over 100 participants reflected the substantially increased activity in the CT program. The meeting was also a joint symposium with the Japanese, and in addition contained presentations on topics related to Compact Torolds such as the Reversed Field Pinch. The third CT symposium is more narrowly focused on the issues of CT physics and reactor concepts. The contributed papers have been assembled in these Proceedings prior to the meeting to allow their use as resource material. In contrast with last year's symposium, the contributed papers are not being presented orally. As outlined in the enclosed Agenda, review talks are beirg given on physics and related reactor topics followed by substantial discussion periods. This change In format relies on the more than 60 papers (including 4 invited talks) presented at the APS meeting and the 51 contributed papers in these Proceedings to report the individual research progress. Furthermore, the sense of community established in part by the prior symposia makes it possible to shift the emphasis in this year's symposium to in-depth discussions of the major research issues. For organizational purposes, both the Agenda and the contributed papers have been divided into categories. This division emphasizes the breadth and diversity of the CT community, but it Is not Intended to artificially divide the community which shares an important commonality of physics. These Proceedings should provide a valuable campliation of recent advances in CT research, as last year's Proceedings have done. However, since this document will have a limited distribution, the authors should be encouraged to publish their results in the refereed literature in order for these important advances to have the widest possible exposure in the fusion community. Rulon K. LInford November 18, 1980 Compact Torold Symposium Agenda December 2-4, 1980 Tuesday Morning: Reactors General Session Chairman: W. C. Condit 8:30 Welcome H. Dreicer Introductory Comments W. F. Dove Invited 8:55 Stationary Systems Speakers: J. G. Gilligan 9:25 Coffee 9:40 Moving Ring Systems R. L. Hagenson 10:10 Utility Requirements for Fusion R. J. Vondrasek 10:30 General Discussion 10:45 10 Minute Break Group Discussion Session Chairmen: 10:55 Stationary Systems R. A. Krakowski 10:55 Moving Ring Systems A. C. Smith 12:00 Lunch Tuesday Afternoon: Particle Rings General Session Chairman: R. F. Post Invited 1:00 Ion Rings Speakers: C. A. Kapetanakos 1:30 Electron Rings H. H. Fleischmann 2:00 Coffee 2:15 Hybrid Systems R. N. Sudan 2:45 General Discussion 3:00 15 Minute Break Group Discussion Session Chairmen: 3:15 Ion and Electron Rings J. D. Sethian 3:15 Hybrid Systems N. Rostoker Sumtnarv Session Chairman: G. H. Miley 4:30 Five minute summaries from the Group Discussion Chairmen(Krakowski, Smith, Sethian, Rostoker) 5:30 Cocktail Hour Wednesday Morning: Spheromak Theci General Session Chairman: J. L. Johnson Invited 3:30 Slow Formation & Equilibrium Speakers: C. K. Chu 9:00 Fast Formation & Equilibrium B. McNamara 9:30 Coffee 9:45 Stability J. H. Hammer 10:15 General Discussion 10:30 15 Minute Break Group Discussion Session Chairmen: 10:45 Formation & Equilibrium Co W- Hartman ] 0: ur, Stability M. Okabavashi 12:00 Lunch Wednesday Afternoon:_ Spheromak Experiment CJpnera] Session Chairman: J. Marshall Invited I : 00 Slow Formation Speakers: M. Yamada 1:30 Fast Formation W. C. Turner 2:00 Coffee 2:15 Equilibrium & Stability T. R. Jarbce 2:45 Spheromak Experiments in Jap^n Y. Nogi 3:00 General Discussion 3:10 10 Minute Break Group Discussion Session Chairmen: 3:20 Formation A. R, Sherwood 3:20 Equilibrium & Stability G. C. Goldenbaum Summary Session Chairman: A. E. Robson 4:30 Five minute summaries from the Group Discussion Chairmen (Hartman, Okabayashi, Sherwood, Goldenbaum) -vii- Thursday Morning: FRC Theory General Session Chairman: H. Berk Invited 30 Formation and Scaling Speakers: L. C. Steinhauer :00 Stability D. A. Barnes 30 Coffee 45 Transport W. Grossmann 10:15 General Discussion 10:30 15 Minute Break Group Discussion Session Chairmen: 10:45 Formation and Scaling R. E. Siemon 10:45 E. St'.'ity C. E. Seyler 10:45 Transpi ••'• N. A. Krall 12:00 Lunch Thursday Afternoon: FRC Experiment General Session Chairman: G. C. Vlases Invited 1:00 Formation Speakers: W. T. Armstrong 1:30 Confinement J. Lipson 2:00 Coffee 2:15 FRC Experiments in Japan H. Ito 2:35 General Discussion 2:50 10 Minute Break Group Discussion Session Chairmen: 3:00 Formation A- L. Hoffman 3:00 Confinement F. L. Ribe Summarv Session Chairman: A. W. DeSilva 4:15 Five minute summarier from the Group Discussion Chairmen (Siemon, Seyler, Krall, Hoffman, Ribe) CONTENTS Page A- Reactors Al Random Gapped Wall Stabilization for Travelling Mirror Compressors 1 P. M. Bellan California Institute of Technology A2 Nuclear Elastic Scattering Effects on Fusion Burns in Compact Tori A J. Galambos, J. DeVeaux, E. Greenspan, and G. H. Miley University of Illinois A3 A Compact-Toroid Fusion Reactor Based on the Field- Reversed Theta Pinch 8 R. L. Hagenson, SA1, and R. A- Krakowski, LASL A4 The Moving-Ring Field-Reversed Mirror Prototype Reactor 12 A. C Smith, Jr., PG and Es G. A. Carlson, LLNL, H. H. Fleischmann, Cornell University, W. Grossmann, New York University, T. Kammash, University of Michigan, K. R. Schultz, General Atomic Company, and D. M. Woodall, University of New Mexico A5 A Linus CT Fusion Reactor Based on Axisymmetric Implosion of Tangentially-Injected Liquid Metal 18 P. J. Turchi, Research Development Associates, A. L. Cooper, D. J. Jenkins, NRL, E. P. Scannell, JAYCOR, Inc. A6 Utility Requirements for Fusion Power 24 R. J. Vondrasek and R. N. Cherdack Burns and Roe, Inc. A7 TRACT Fusion Reactor Studies 2 7 H. J. Willenberg, L. C. Steinhauer, and A- L. Hoffman Mathematical Sciences Northwest, Inc. B. Particle Rings Bl On the Use of Intense Electron and Ion Beams and Rings in Mixed-CT Configurations 31 H. H. Fleischmann Cornell University B2 Cornell Ion Ring Experimental Program 36 J. B. Greenly, P. L. Dreike, D. A. Hammer, P. M. Lyster, Y. Nakagawa, and R. N. Sudan Cornell University B3 Kink Motion of Long Field-Reversing Ion Layers 40 D. S. Harned University of California, Berkeley B4 Propagation of an Intense Ion Beam Transverse to a Magnetic Field # 4 3 H. Ishizuka and S. Robertson University of California, Irvine B5 Theory of Plasma Injection into a Magnetic Field 4 7 W. Peter and N- Rostocker University of California, Irvine C. Spheromak Theory Cl Classical Transport in Field Reversed Mirrors: Reactor Implications 52 S. P. Auerbach and W. C. Condit Lawrence Livermore National Laboratory C2 Calculation of Tilting Modes in a Spheromak 56 M. S. Chance, R. L. Dewar, R. C. Grimm, S. C. Jardin, J. L. Johnson, and D. A. Monticello Princeton University C3 Critical Bias Fields for Tilting Stability in the Beta-II Experiment 60 H.