1. Universal Subterahertz Large-Orbit Gyrotron: Operation at the Second and Third Cyclotron Harmonics

   • Yu. K. Kalynov
   • V. N. Manuilov
   • A. Sh. Fiks

   OriginalPaper 17 April 2021 Pages: 321 - 331

2. Microwave Setup of a Megawatt Power Level for the ECR Plasma Heating and Current Drive System of the T-15MD Tokamak

   • G. G. Denisov
   • V. I. Malygin
   • N. A. Kirneva

   OriginalPaper 19 April 2021 Pages: 332 - 344

3. The Concept of a Gyrotron with Megawatt Output at Both First and Second Cyclotron Harmonics for Plasma Heating in Spherical Tokamaks

   • G. G. Denisov
   • M. Yu. Glyavin
   • E. S. Semenov

   OriginalPaper 17 April 2021 Pages: 345 - 353

4. High-Power Pulsed Terahertz-Wave Large-Orbit Gyrotron for a Promising Source of Extreme Ultraviolet Radiation

   • Yu. K. Kalynov
   • I. V. Bandurkin
   • I. V. Osharin

   OriginalPaper 17 April 2021 Pages: 354 - 362

5. Widening of the Frequency Tuning Bandwidth in a Subterahertz Gyrotron with an External Bragg Reflector

   • R. M. Rozental’
   • I. V. Zotova
   • V. P. Tarakanov

   OriginalPaper 17 April 2021 Pages: 363 - 370

6. Resonant Reflectors for Experimental Studies of the Reflected-Signal Influence on the Gyrotron Operation Regimes

   • A. A. Bogdashov
   • Yu. V. Novozhilova
   • M. Yu. Glyavin

   OriginalPaper 17 April 2021 Pages: 371 - 380

7. Dynamics of Multimode Processes at the Leading Edge of the Accelerating-Voltage Pulse in a Gyrotron Driven by an External Signal

   • N. V. Grigorieva
   • N. M. Ryskin
   • V. L. Bakunin

   OriginalPaper 17 April 2021 Pages: 381 - 391

8. Phase Locking of a Gyrotron with Low-Frequency Voltage and Current Fluctuations by an External Monochromatic Signal

   • V. L. Bakunin
   • G. G. Denisov
   • Yu. V. Novozhilova

   OriginalPaper 19 April 2021 Pages: 392 - 402

9. On the Influence of the Electron Velocity Spread on the Passband Properties of Gyroklystrons

   • E. V. Zasypkin

   OriginalPaper 17 April 2021 Pages: 403 - 412

10. Optimization of Collector Systems of Technological Gyrotrons with Shielded Magnetic Systems

    • M. V. Morozkin
    • M. D. Proyavin
    • M. Yu. Glyavin

    OriginalPaper 19 April 2021 Pages: 413 - 421

11. Sources of Powerful Terahertz Radiation Based on Coherent Spontaneous Emission from Electron Bunches Formed by Photo Injectors

    • Yu. S. Oparina
    • N. Yu. Peskov
    • A.V. Savilov

    OriginalPaper 19 April 2021 Pages: 422 - 429

12. Development of Photoinjector Accelerator Complex at the Institute of Applied Physics of the Russian Academy of Sciences: Research Status and Prospects

    • A. A. Vikharev
    • A. L. Vikharev
    • A. P. Shkaev

    OriginalPaper 19 April 2021 Pages: 430 - 439

13. Oversized Modified Bragg Cavities for High-Power Long-Pulse Subterahertz Free-Electron Lasers

    • N.Yu. Peskov
    • N. S. Ginzburg
    • S.Yu. Kornishin

    OriginalPaper 19 April 2021 Pages: 440 - 448

14. A High-Power Planar W-Band Čerenkov Maser with Two-Dimensional Distributed Feedback: Design Elements and Modeling Results

    • N.Yu. Peskov
    • A. A. Vikharev
    • V.D. Stepanov

    OriginalPaper 19 April 2021 Pages: 449 - 457

15. Development of High-Power Millimeter-Wave Surface-Wave Generators Based on Relativistic Ribbon Electron Beams

    • A. M. Malkin
    • V.Yu. Zaslavsky
    • N. S. Ginzburg

    OriginalPaper 19 April 2021 Pages: 458 - 468

16. Development of Electrodynamic Components for Microwave Electronic Devices Using the Technology of 3D Photopolymer Printing with Chemical Surface Metallization

    • M. D. Proyavin
    • A. A. Vikharev
    • S.V. Kuzikov

    OriginalPaper 19 April 2021 Pages: 469 - 478