Engineering the boundary.
Nothing crosses this boundary that isn't supposed to — not gas, not electromagnetic energy — proven and documented. Custom UHV flange interfaces, knife-edge sealing geometry, helium leak tested and dual-hermetic certified.
Dual hermeticity
One engineered interface, certified against two distinct boundary failures.
Vacuum boundary
- Knife-edge sealing geometry, UHV-class < 10⁻⁹ Torr
- OFHC copper gaskets, sub-micron finish (Ra < 0.4μm)
- He leak tested to 10⁻¹⁰ mbar·L/s sensitivity
- Acceptance Test Report (ATR) with every shipment
Electromagnetic boundary
- EMC-engineered feedthroughs
- Measured shielding effectiveness (SE in dB)
- MIL-STD-461 protocol capability
- Impedance-matched coaxial feedthroughs
Where to go next
Helidge is the master brand. Each portal below speaks to a different audience.
Children of the Sun.
Spokane comes from Spukanee, meaning "Children of the Sun." Helidge compresses Helios — the sun, and the etymology behind helium, our leak-test gas — with edge: the knife-edge seal, and the plasma scrape-off layer in a tokamak. Every word in the name does triple duty.
The boundary is the hardest part of any vacuum or fusion system to get right — and the part most often taken for granted. We exist to make it provable.
Team
Five founders, five disciplines.