Abstract
This paper presents an experimental setup of magnetic field taper variations to optimize the efficiency of a Ka-band pulsed gyrotron. Experimental optimization of the gyrotron’s efficiency is presented. The efficiency dependence on three input parameters—beam current, magnetic field amplitude, and variations in the magnetic field taper profile—is studied. A gyrotron electron efficiency improvement from 25.4% for a non-tapered magnetic curve to 36.4% for a tapered magnetic curve is measured. The stability of the millimeter wave excitation in the cavity is also affected by the magnetic taper gradient. The magnetic taper is obtained by a practical modification of the solenoid that leads to an 11% electron efficiency improvement. Magnetic tapering can be combined with other types of efficiency enhancement concepts to obtain an overall improved efficiency that can be important for industrial applications.
| Original language | English |
|---|---|
| Article number | 2737 |
| Journal | Electronics (Switzerland) |
| Volume | 13 |
| Issue number | 14 |
| DOIs | |
| State | Published - Jul 2024 |
Keywords
- efficiency
- gyrotron
- Ka-band
- pulse
- solenoid