Introduction to the Physics of Gyrotrons Gregory S. Nusinovich ; foreword by Victor Granatstein and Richard Temkin.

Format:

Book

Author/Creator:

Nusinovich, G. S.

Language:

English

Subjects (All):

Particle dynamics.

Plasma radiation.

Gyrotrons.

Physical Description:

1 online resource (xvi, 335 p. :) ill. ;

Edition:

1st ed.

Place of Publication:

Johns Hopkins University Press 2004

Baltimore : Johns Hopkins University Press, 2004.

Language Note:

English

Summary:

As unique sources of coherent high-power, microwave, and millimeter-wave radiation, gyrotrons are an essential part of the hunt for controlled fusion. Presently, gyrotrons are actively used for electron cyclotron resonance plasma heating and current drive in various controlled fusion reactors. These sources have been under development in many countries for more than forty years. In spite of their widespread use, however, there is as yet no single book to introduce non-specialists to this vital field.Now Gregory S. Nusinovich, an early pioneer of the gyrotron and widely regarded today as the world's leading authority on the subject, explains the fundamental physical principles upon which gyrotrons and related devices operate. Nusinovich first sets forth some "rules of thumb" that allow readers to understand gyrotron operation in simple terms. He then explores the fundamentals of the general theory of gyrotrons and offers an overview of the various types of gyro-devices, including gyromonotrons, gyroklystrons, gyro-traveling-wave tubes, and gyrotwystrons. He explains not only the theory, linear and nonlinear, but also the practical challenges that users of such devices face. This book will be of interest to undergraduate and graduate students as well as to those who develop gyrotrons or who use them in various applications. It should also appeal to plasma physicists interested in charged-particle dynamics, as well as to applied physicists needing to know more about micro- and millimeter-wave technologies.

Contents:

Cover

Half Title

Title

Dedication

Copyright

Contents

Foreword

Preface

PART I INTRODUCTION TO GVRODEVICES

Chapter 1 Introduction

1.1. Relativistic Dependence of Electron Cyclotron Frequency on Electron Energy

1.2. Quantum Interpretation of Induced Cyclotron Radiation

1.3. Autoresonance

1.4. Normal and Anomalous Doppler Effects

1.5. Electron Deceleration

1.6. Optimum Choice of Parameters

1.7. Problems and Solutions

Chapter 2 Gyrotron Arrangement

2.1. Velocity Spread and Inhomogeneous Doppler Broadening Operation Near Cutoff

2.2. Electron Optics. Magnetron Injection Guns

2.3. Microwave Structures (Cavities and Waveguides)

2.4. Types of Gyrodevices

2.5. Magnets and Solenoids

2.6. Problems and Solutions

PART II THEORY OF GvROTRON OsciLLATORS AND AMPLIFIERS

Chapter 3 Linear Theory of the Gyromonotron

3.1. Transversely Homogeneous Model

3.2. Gyro-Averaged Equations of Electron Motion: General Approach

3.3. Excitation of Resonators: General Form

3.4. Self-Excitation Conditions

3.5. Mode Selection

3.6. Problems and Solutions

Chapter 4 Nonlinear Theory of the Gyromonotron (Single-Mode Treatment)

4.1. Cold-Cavity Approximation

4.2. Self-Consistent Approach

4.3. Effect of Velocity Spread

4.4. Space-Charge Effects

4.5. Trade-Offs in the Gyrotron Design

4.6. Problems and Solutions

Chapter 5 Mode Interaction in the Gyromonotron

5.1. Preliminary Remarks

5.2. Main Effects in the Mode Interaction

5.3. Start-up Scenario

5.4. Phase Locking in Multimode Gyrotrons

5.5. Problems and Solutions

Chapter 6 Linear Theory of the Gyro-TWT

6.1. Introduction: Instability in Magnetoactive Plasma

6.2. Derivation of the Dispersion Equation for the Gyro-TWT

6.3. Small-Signal Gain in Single-Stage and !Vlultistage Devices

6.4. Bandwidth.

6.5. Stability

Chapter 7 Nonlinear Theory of the Gyro-TWT

7.1. Self-Consistent Set of Equations. Energy Conservation Law. Low-Current Limit

7.2. Beam-Wave Interaction

7.3. Gain and Bandvvidth

7.4. Concluding Remarks

7.5. Problems and Solutions

Chapter 8 Theory of Gyroklystrons

8.1. Introductory Remarks

8.2. General Formalism. Point-Gap Model

8.3. Gain, Bandwidth, and Efficiency

8.4. Two-Cavity Gyroklystron

8.5. Problems and Solutions

Chapter 9 Fluctuations: Intrinsic and Extrinsic Noise

9.1. Radiation Linewidth, Sources of Noise

9.2. General Formalism

9.3. Intrinsic Noise Sources. Shot Noise

9.4. Extrinsic Noise

9.5. Phase Stability of Gyroamplifiers

9.6. Problems and Solutions

PART III THE DEVELOPMENT OF GVRODEVICES

Chapter 10 Gyrotron Oscillators for Controlled Fusion Experiments

10.1. Historical Introduction

10.2. Quasi-Optical Mode Converters

10.3. Output Windows

10.4. Depressed Collectors

10.5. Experimental Results

Chapter 11 Gyroklystrons

11.1. Historical Introduction

11.2. Gyroklystrons for Radar Applications

11.3. Gyroklystrons for Charged Particle Accelerators

Chapter 12 Gyro-Traveling-Wave Tubes

12.1. Historical Introduction

12.2. Large-Bandwidth Gyro-TWTs

12.3. High-Gain Gyro-TWTs

Chapter 13 Other Types of Gyrodevices

13.1. Gyro-Backward-Wave Oscillator

13.2. Gyrotwystron

13.3. Quasi-Optical Gyrotron

13.4. Cyclotron Auto-Resonance Maser (CARM)

13.5. Cyclotron Maser Based on the Anomalous Doppler Effect

13.6. Large-Orbit Gyrotron

13.7. Peniotron, Gyropeniotron, and Autoresonant Peniotron

13.8. Problems and Solutions

Summary

Appendix 1: Derivation of Gyro-Averaged Equations

Appendix 2: Wave Excitation by Electron Beams in Waveguides.

Appendix 3: Derivation of the Self-Consistent Set of Equations for the Gyro-TWT

References

Index.

Notes:

Includes bibliographical references (p. 309-327) and index.

Description based on print version record.

Description based on publisher supplied metadata and other sources.

ISBN:

1-4214-2764-8

1-4214-2941-1

OCLC:

1057857438