Helion

Helion raises $425M Series F fundraise to scale commercialized fusion power, bringing Helion’s valuation to $5.425B post-money. Read more:?https://lnkd.in/gvzBBwyj

The work we do at Helion really comes down to two things: the people and the hardware. I shared my thoughts on what it’s like to work at their intersection - where execution, speed, and ownership drive everything we do. Learn more: https://lnkd.in/gfndBXXW

Our multi-channel interferometer uses 1550 nm laser light to measure electron density with extreme precision. The setup splits light into two paths—one passing through plasma and one along a reference path. Relative to the light in the reference path, light going through plasma arrives at the detector with a phase difference proportional to the plasma’s electron density. Dense wavelength division multiplexing enables us to increase our channel count while reducing the number of common components. This compact, high-performance system will fully diagnose our plasma’s electron density at every stage of FRC formation, acceleration, and compression.

In Helion’s fuel processing lab Here, we house fuel loading, gas processing, and analytical operations for Polaris. As fusion occurs, fusion byproducts will be captured at the end of the machine and travel through fluid lines into secure containers, that will be transported to and processed in the lab.

Helion is on a mission to bring fusion power to the world, and we need a passionate Environmental Health & Safety (EHS) Engineer to help us do it safely. In this role, you’ll be the driving force behind a safety-first culture, ensuring our teams can build and test the technology that will bring fusion energy to the grid – because the world can’t wait. Apply today: https://lnkd.in/gzVHZJ-U

Helion is supporting the next generation of engineers through opportunities that foster growth!?We sent four students from the University of Washington to attend #NSBE2025 on our Helion Conference Scholarship, helping to connect students with mentorship, networking, and a community dedicated to their success. #NSBE2025 #STEM #fusion

Fusion creates neutrons, which are effectively managed through the use of shielding. Shielding limits and controls the effects of neutrons to keep radiation exposure from the fusion process as low as reasonably achievable. I share more on shielding, including how it works, here: https://lnkd.in/gQVzUQtD

With International Women’s Day tomorrow, I’ve been reflecting on the incredible women I’ve had the chance to learn from throughout my career. Their drive, expertise, and commitment to lifting each other up continue to impress me. At Helion, I get to work alongside some of the most talented women from the most diverse backgrounds I’ve encountered in my career, all focused on bringing fusion energy to the world. It’s inspiring to see them leading work that will transform our planet. I’m also proud to be a leadership sponsor for our Women’s ERG and look forward to seeing it grow and thrive in the years ahead. Grateful to be on this journey with the women of Helion.?

Polaris’ 50 MJ capacitor bank. Our energy bank is comprised of thousands of pulsed power units that each contain capacitors, diagnostics, safety mechanisms, advanced semiconductors, and more – everything that’s needed to monitor the electrical health of Helion’s fusion machines. These units are rigorously built as they move through the assembly line, tested at Polaris’ operating voltages, and sent here to Ursa, for final integration.

Meet Miguel, Fusion Technician at Helion! Miguel combines his passion for physics with a desire to protect our planet. In his work, Miguel qualifies circuit boards that control our fusion machines and helps solve critical challenges on our path to scaling fusion power. #electronics #manufacturing #physics?