RF behavior of dielectric window for 1 THz, 1 kW power gyrotron

Nitin Kumar, Shubham Choudhury, Narendra Kumar Singh, Hasina Khatun and Anirban Bera
CSIR-Central Electronics Engineering Research Institute, Pilani- 333 031, India
This paper is dedicated to Dr Shrinivas Joshi

THz radiation shows various unique features which make it useful for different scientific and industrial applications such as imaging, sensing, spectroscopy, medical imaging, etc. Gyrotron exhibits the capability to generate electromagnetic radiation in the range of sub-THz band with kilowatt power. Due to high frequency, the design of the components of the gyrotron becomes more complicated and challenging than the gyrotrons widely used for lower frequency applications. One such key components of the egyrotron is the dielectric window, which separates the ultrahigh vacuum inside the gyrotron from the outer atmospheric pressure. The radial size and the thickness of the dielectric disk reduce linearly with frequency which makes the RF window very sensitive in its power handling capacity. Here, the electrical design of the RF window for 1 THz, 1 kW gyrotron is presented. The sensitivity of the disk thickness is also analyzed in detail. The design simulations are performed in CST-Microwave Studio. © Anita Publications. All rights reserved.
Doi: 10.54955/AJP.33.9-10.2024.651-656
Keywords: Gyrotron, THz, Dielectric window, Diamond window.

Peer Review Information
Method: Single- anonymous; Screened for Plagiarism? Yes
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