Suppression criteria of parasitic mode oscillations in a gyrotron beam tunnel

Journal Article · Tue Feb 15 00:00:00 EST 2011 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3554648· OSTI ID:21535168

Kumar, Nitin ^[1]; Singh, Udaybir; Sinha, A K ^[1]; Singh, T P ^[2]

---

1. Gyrotron Laboratory, Microwave Tube Area, Central Electronics Engineering Research Institute (CEERI), Pilani, Rajasthan 333031 (India)
2. Department of Physics, JV College, Baraut, Uttar Pradesh 250611 (India)

This paper presents the design criteria of the parasitic mode oscillations suppression for a periodic, ceramic, and copper loaded gyrotron beam tunnel. In such a type of beam tunnel, the suppression of parasitic mode oscillations is an important design problem. A method of beam-wave coupling coefficient and its mathematical formulation are presented. The developed design criteria are used in the beam tunnel design of a 42 GHz gyrotron to be developed for the Indian TOKAMAK system. The role of the thickness and the radius of the beam tunnel copper rings to obtain the developed design criteria are also discussed. The commercially available electromagnetic code CST and the electron trajectory code EGUN are used for the simulations.

• OSTI ID: 21535168
• Journal Information: Physics of Plasmas, Vol. 18, Issue 2; Other Information: DOI: 10.1063/1.3554648; (c) 2011 American Institute of Physics; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CERAMICS
COPPER
DESIGN
ELECTRON BEAMS
INHIBITION
MICROWAVE AMPLIFIERS
OSCILLATION MODES
TOKAMAK DEVICES
AMPLIFIERS
BEAMS
CLOSED PLASMA DEVICES
ELECTRONIC EQUIPMENT
ELEMENTS
EQUIPMENT
LEPTON BEAMS
METALS
MICROWAVE EQUIPMENT
PARTICLE BEAMS
THERMONUCLEAR DEVICES
TRANSITION ELEMENTS