Speaker
Description
Diamond is known for its exceptional features including ultra-wide band gap, high thermal conductivity, chemical inertness, optical transparency across a broad frequency range, low dielectric loss (tan δ), and hardness. These characteristics makes diamond a superior material of choice for a wide range of applications, such as optics, heat spreaders, semiconductors, quantum, and more.
Specifically, there is a recognized demand for large diamond wafers to function as output windows in high-power microwave gyrotron sources. Such wafers must be composed of high-quality material, showcasing characteristics such as low losses, high thermal conductivity, and sustained transparency to ensure long-duration operations.
We are Q2 Diamonds, a brand backed by the prestigious House of Maitri, renowned in the realm of lab-grown diamonds also showcase expertise in custom manufacturing single crystal and polycrystal diamond wafers, NV centre diamonds, and boron & nitrogen doped diamonds tailored for industrial applications. Our lab grown polycrystal diamonds wafers are fabricated using a 915 MHz/ 30kW, Microwave Plasma Chemical Vapor Deposition (MPCVD) reactor in a hydrogen-rich atmosphere with a methane and hydrogen gas ratio upto 10%. With our facility, we can manufacture diamond wafers ranging in diameters up to 150 mm and thickness up to 5 mm. We exercise precise control over diamond parameters such as surface roughness and defect density to optimize microwave transmission efficiency while minimizing dielectric loss. This capability enables our wafers to withstand the extreme conditions encountered in gyrotron operation, including high temperatures and intense microwave radiation. During the presentation, we showcase our research capabilities and available infrastructure while discussing our strategies for enhancing the use of diamond in fusion experiments. Our focus is on utilizing diamond for diagnostics and control purposes, which provide researchers with crucial insights into plasma properties and behaviour and contributing to the advancement of technologies aimed at achieving practical fusion energy production.
