Editing Inertial electrostatic confinement (section)

===2020s===
Avalanche Energy is a start-up with about $51 million in venture/DOD funding that is working on small (tens of centimetres), modular, fusion batteries producing 5kWe. They are targeting 600 kV for their device to achieve certain design goals. Their Orbitron concept electrostatically (magnetron-augmented) confines ions orbiting around a high voltage (100s of kVs) cathode in a high vacuum environment (p< 10 −8 Torr) surrounded by one or two anode shells separated by a dielectric. Concerns include breakdown of the vacuum/dielectric and insulator surface flashover. [[Permanent magnet]]/electromagnet magnetic field generators are arranged coaxially around the anode. The magnetic field strength is targeted to exceed a [[cavity magnetron#Hull or single-anode magnetron|Hull cut-off condition]], ranging from 50-4,000 kV. Candidate ions include protons (m/z=1), deuterium (m/z=2), tritium (m/z=3), lithium-6 (m/z=6), and boron-11 (m/z=11). Recent progress includes successful testing of a 300 kV [[bushing (electrical)|bushing]].<ref>{{cite web |last=Wang |first=Brian |title=Avalanche Energy Making Technical Progress to a Lunchbox Size Nuclear Fusion Device |date=2023-02-08 |website=NextBigFuture.com |url=https://www.nextbigfuture.com/2023/02/avalanche-energy-making-technical-progress-to-a-lunchbox-size-nuclear-fusion-device.html |access-date=2023-02-09}}</ref>