Alameda Applied Sciences offers a high-speed gas valve that operates on the principle of a conductive flyer plate accelerated by eddy currents induced by an adjacent coil. The low-mass flyer plate and backing spring combination provide a fast opening (<100 μs) and closing (<500 μs) time for the valve. Other commercially available solenoid valves typically open in 1 ms and close in several ms. In one embodiment of the AASC valve, a nozzle structure directs a supersonic flow of gas into a rectangular jet of high-density gas suitable for interaction with a laser beam transverse to the jet, for the production of laser wake-field interaction, leading to very high-energy electrons from the gas jet.
AASC builds valve drivers and custom gas manifolds to support our valves. We have designed a rep rated driver for our single plenum valves that is operational at up to 10 Hz. Our multiple plenum valve drivers operate in single shot mode. Each valve plenum can be fired independently.
Alameda Applied Sciences Corp has developed a proprietary Coaxial Energetic Deposition (CEDTM) process that provides better adhesion than conventional deposition methods, and denser, higher quality films with fewer voids and impurities. AASC uses CED to deposit Nb, MgB2 and other superconducting thin films inside RF cavities for advanced accelerators. CED uses energetic ion deposition & plasma immersion ion implantation in coaxial, planar, and complex substrates for advanced surface modification. Energetic ions (20 eV to 200 eV) interact with the first few monolayers of the substrate to break up voids and columnar microstructures.
Alameda Applied Sciences Corporation has used diamond radiation detectors to measure the dose delivered by a 12 MeV electron accelerator at Atomic Energy Canada Limited (AECL). This accelerator is used for medical instrument sterilization. The electron beam is scanned to generate a beam size of 18 cm x 3 cm at 50% beam intensity (i.e. full width at half maximum). The dose/pulse was 0.5 kGy with a duration of 200 μs. The AASC DRDs survived this dose intact.
AASC has developed a patented metal plasma thruster (MPT) for attitude keeping and orbit raising or lowering of small satellites. A vacuum arc generates a metal plasma plume that accelerates into space at 8.1 km/s – 23.5 km/s to generate thrust (10-15 μN/W). Different metals provide a range of Specific Impulse from 826 s (Pt) up to 2400 s (Al). A typical MPT uses molybdenum for an Isp of 1700 s and single impulse bit of 300 μNs with rep rate determining average power and thrust. The MPT uses solid metal fuel with no moving parts and operates using a 45 V Power Processor Unit (PPU).