Proceedings of the 9th Symposium on Fusion Technology

Contents

Preface

Welcoming Address

Opening Address

Invited Paper: The Progress and the Development Program of Fusion Technology in Japan

A.l - Vacuum Technology

Vacuum Pumping for Controlled Thermonuclear Reactors

Some Considerations on Vacuum Systems for a Fusion Reactor

Vacuum Vessel and Pumping System of the JET Experiment

The Temperature Dependence of Trapping of Low Energy Hydrogen in Getter Materials

H2, D2 and T2 Pumping and Handling in Fusion Experiments Using SORB-AC Non-Evaporable Getter Cartridges

Desorption Studies from Mo-Surfaces

On the Dependence of Composition and Depth Profiles of Stainless Steel and Inconel Surfaces on Pretreatment

Divertor Pumping System of ASDEX

Design Considerations for Large Cryopumps for High Power Neutral Injectors

B.l - Magnet Technology

Niobium-Tin Superconductors for Fusion Research

Transition and Recovery of Cryogenically Stable Conductors

Proposed MX Superconducting Mirror Machine at LLL

Aspects of Safety and Reliability of Superconducting Magnet Systems for Fusion Power Reactors

Models for Large Superconducting Toroidal Magnet Systems

The UWMAK-II Study and Magnet Design

Poloidal Field for a 1.7 MA TOKAMAK: Comparison Between an Iron Core and an Air Core Transformer

The Transformer Design for a Proposed Technical Feasibility TOKAMAK Reactor

Eddy Current Losses and Transient Magnetic Forces in Pulsed Fusion Reactors

Magnetic Field System Design of a Reverse Field Pinch Experiment

Analysis of Various Field Programming to Produce the RFP Configuration

Design, Construction and Operation of the DITE Divertor Field System

B.2 - Poster Session

Studies on Design and Tests of Superconductors for TOKAMAKS

Change of the Superconducting Critical Parameters of Nb3SN by Low Temperature Neutron Irradiation

The Poloidal Field Circuit in the Joint European Torus (JET)

Poloidal Field Equilibrium Calculations for JET

JET Poloidal Field Coils

Technical Concept for the Multipole Coils of ASDEX

Design and Manufacture of the ASDEX Toroidal Field Coils

Stray Fields Evolution Near the Gaps in a Toroidal Device

Toroidal Arrangement of Modular Cylindrical Multipole Magnets for Producing an External Rotational Transform

Invited Paper: A Survey of the U.S. Magnetic Fusion Program

C.l - Experimental Devices

Plan and Design of ETL TPE-2 Experiment

Conceptual Design Problems in Future Reversed Field Pinch Experiments

The Mechanical Structure of the Joint European Torus

C.2 - Poster Session

Calculations of Deformations and Stress Fields in the Structure of the TEXTOR TOKAMAK

Three-Dimensional Calculations for the JET Mechanical Structure

THOR TOKAMAK Engineering Design and Experimental Program

Technological Aspects of the WEGA Stellarator

Design Aspects of a Large Toroidal Stabilizing Shell and Vacuum Liner Assembly

Transformer with Variable Rise Times in the Toroidal Device ETA-BETA II

On the Technology and Characteristics of Breakdown and Plasma in Shock Tube Arrangements

Crowbar Experiments by Ionizing Shock Waves and New Methods to Produce Torus Like Plasmas

Some Manufacture and Installation Problems in Experimental Assemblies for Fusion Research

D.l - Tritium Problems

The Solubility of Hydrogen Isotopes in Lithium

Kinetic Studies of Solutions of Deuterium in Lithium by Mass Spectrometry

Tritium Release from Neutron Irradiated Lithium-Aluminum Oxides

Tritium Permeation Through Metals Under Steam Conditions

A Model Experiment on Tritium Recovery

Tritium Handling Scheme for the JET Experiment

E.1 - Systems and Conceptual Design Studies

Parameter Study of a Screw-Pinch Reactor

Recent Development in the Fintor 1 Design The Fintor Group

The Practical Feasibility of a Bundle Divertor for a TOKAMAK Power Reactor

Comparison of Preliminary D-T and "Catalyzed" D-D System Studies

Plasma Studies of a Catalyzed-D Noncircular TOKAMAK

Energy Yield and Fuel Dynamics of the Fusion Breeder

Potential Environmental Effects of Fusion Reactor Power Plants

J.R. YOUNG, 3.F. GORE, F.S. COPPMAN 405

Plasma Stabilization Requirements of the Reference Theta-Pinch Reactor (RTPR)

E.2 - Poster Session

Technical Limitations on Conceptual TOKAMAK Reactors (Part II)

A TOKAMAK Reactor with Servicing Capability

A New Approach to the Problem of 31anket Replacement in TOKAMAK Fusion Reactors

Accessibility and Replacement as Prime Constraints in the Design of Large Experimental TOKAMAKS

Radioactivity and Afterheat of Fintor and Related Problems of Maintenance and Waste Disposal

Remote Handling Procedures in JET

The FISCATRON Fusion Reactor Concept

Constructive and Technological Aspects of Vacuum System Design for Demonstration Thermonuclear Reactor TOKAMAK

The Effect of Vacuum Conditions on Plasma Production and Confinement

F.l - Data Acquisition and Processing

Experience Gained During the Evolution of a Computer Based Data Acquisition System

A Command Interpreter for the Padua Data Acquisition System

New Developments of the Data Acquisition System of TFR

The Computerized Control and Data Acquisition System for the DPF-JUEL II

Internal Plasma Diagnostic with an On-Line Data Acquisition System for Multiple Magnetic Probes

Time and Space Resolved Temperature Measurements of a Limiter in a TOKAMAK Discharge Using an Infra-Red Camera

Invited Paper: Fusion Power in the EEC - Some Considerations Concerning the Future Program

G.l - First Wall and Blanket

Surface Structure After High Dose Light Ion Bombardment

Erosion of Different First Wall and Limiter Materials by Low Energy Hydrogen Ions

Survey on Experimental Neutron Physics of CTR Blankets in the KPA

Neutronics Calculations for the Oak Ridge National Laboratory TOKAMAK Reactor Studies

Low Activity Blanket Designs and Heat Transfer for Experimental Power Reactors

Neutron Multiplication Effect of CTR Blankets Containing Beryllium

Radiation Transport and Shielding Information, Computer Codes, and Nuclear Data for Use in CTR Neutronics Research and Development

Determination of Neutron Spectra and Cross-Section Sensitivity of Tritium Production in a Lithium Sphere

Nuclear Data Measurements for PR-Wall and Structural Materials

DPF Julich II - Test Bed for Developing a Plasma Neutron Source

G.2 - Poster Session

Compatibility of Vanadium, Niobium and Molybdenum with Impure Helium

Low-Energy Helium Bombardment of Copper and Niobium: Gas Depth Profiles Measurements

The Influence of He on the High Temperature Fracture of an Austenitic Stainless Steel

Radiation Effects in Graphite Related to its Application in Fusion Reactors

Activation from D-T Fusion Neutrons and Resulting Dose Rates in JET

Thermal Stability of Solid Lithium Compounds Proposed for Use in CTR Blankets

Investigations on Thermally Stressed Electrical Insulators up to 1000°C

A Neutronic Study of the Culham Conceptual TOKAMAK Reactor MK II

Poloidal Distributions of Radiation Heating and 14 MeV Neutron Flux at First Wall

Neutron Streaming Problems in the "Fintor 1" Design

H.1 - Electric Power Handling

Large Power Supply Facilities for Fusion Research

Mixed Generator-Rectifier Power for JET (A Manufacturers View)

Design and Operation of the DITE Power Supplies and Control Systems

The Power Supply for the Poloidal Field Coils of ASDEX

A Solid Rotor Iron Free Asynchronous Generator for the Production of High Energy Pulses

Energy Storage and Transfer with Homo polar Machine for a Linear Theta-Pinch Hybrid Reactor

A Fast Circuit Breaker for 10^ a Current

Ohmic Heating DC Circuit Breakers with Liquid-Metal Plasma Valves

A Circuit Breaker Fuse System for the Wendelstein VII A Ohmic Heating Circuit

Discharge of a Superconducting Energy Storage System - A Mathematical Approach

H.2 - Poster Session

Large TOKAMAK Power Supplies - A Survey of Problems and Solutions

The JET Power Supply Comprehensive System

Flywheel-Generator-Rectifiers as Large Magnet Pulsed Power Supplies

The ASDEX Ohmic Heating Electrical System

DC Current Breaking Test on Vacuum Interrupters

Dynamic Behavior of a Resistive Transfer Circuit with a Superconducting Switch

Arc Behaviour Effects in Pressurized Spark Gaps in the Millisecond Range

I.1 - Control

The Control System for the Prascati TOKAMAK

Investigations on the Feedback System of ASDEX

Plasma Position and Shape Control in JET

K.l - Plasma Handling (Injection, Heating, Extraction)

120-keV Neutral-Beam Injection System Development

The Wendelstein VII A Injection System

High Voltage Series Protection of Neutral Injectors with Crossed-Field Tubes

Injection Considerations for Mirror Reactors

High Voltage Protection of High Power Ion Sources by Past Vacuum Tube Switches

An Improved Ion Source for the Levitron Injector

Neutral Beam Transmission in an Injection Line

An Investigation of Ion Source Switch-On and Pulse Rise Times

The Periplasmatron Ion Source

Water Cooled Extraction Grids

A Scheme for the Energy Recovery of the Charged Beam Fraction in Neutral Injectors

Experiments for Pilling Magnetic Confinement Machines with Laser Produced Plasmas - Preliminary Results

High-Temperature High-Quality Deuterium Plasma Production by Laser Beam(s) by Means of On-Line Computer Control Technique

K.2 - Poster Session

Neutralization of 1 MeV liydrogen Cluster Beam

Control of Cluster Ion Sizes for Efficient Injection Heating

A Shunt Regulator for 150-kV, 20-A, 0.5-Sec Neutral-Beam-Source Power Supplies

Design of a Megawatt Neutral Injector

List of Participants

Subject Index