Weather Modification History banner

Beam Experiment Aboard Rocket (BEAR)

On July 13, 1989 the BEAM experiment Aboard Rocket (BEAR) linear accelerator was successfully launched and operated in space. The flight demonstrated that a neutral hydrogen beam could be successfully propagated in an exoatmospheric environment. The accelerator, which was the result of an extensive collaboration between Los Alamos National Laboratory and industrial partners, was designed to produce a 10 mA (equivalent), 1 MeV neutral hydrogen beam in 50 u.s pulses at 5 Hz. The major components were a 30 kev H' injector a 1 MeV radio frequency quadrupole, two 425 Mhz RF amplifiers, a gas cell neutralizer, beam optics, vacuum system and controls. The design was strongly constrained by the need for a lightweight rugged system that would survive the rigors of launch and operate autonomously. Following the flight the accelerator was recovered and operated again on the laboratory. [1]

Media Gallery


O’Shea, Patrick G., et al. "A Linear Acceleration in Space--The Beam Experiment Aboard Rocket." LOS ALAMOS NATIONAL LAB NM, 1990.
O’Shea, P. G., et al. "Laboratory performance of the BEAR (Beam Experiment Aboard Rocket) RFQ (radio-frequency quadrupole)." No. LA-UR-88-3236; CONF-881151-2. Los Alamos National Lab., NM (USA), 1988.
O’Shea, P. G., et al. "The bear accelerator." Proceedings of the 1989 IEEE Particle Accelerator Conference,. Accelerator Science and Technology. IEEE, 1989.

Broken Links

If any of the links above do not work, copy the URL and paste it into the form below to check the Wayback Machine for an archived version of that webpage.

Jim Lee, ClimateViewer News
Jim Lee
Creator of ClimateViewer News

“I am forever a Boy Scout, lifetime artist, nocturnal programmer, music is my life, love is my religion, and I am the luckiest husband and father on Earth. I speak for the trees. I have a passion for mapping, magnets, and mysteries.”

About Jim Lee


See pollution, privacy concerns, weather modification & geoengineering experiments, and more. Monitor your world and view satellite imagery in real-time!


We use cookies from third party services (YouTube and Disqus Comments). Read their privacy policies and how you can disable these services by clicking "Privacy Preferences".

Privacy Preferences