The Berkeley Accelerator Space Effects (BASE) Facility

The BASE Facility operates in conjunction with the 88-Inch Cyclotron at Lawrence Berkeley National Laboratory to provide beams of heavy ions, protons, and neutrons for radiation effects testing. The very first single event effects (SEE) tests in the world were conducted here by The Aerospace Corporation in 1979, and we continue to be at the forefront of radiation effects testing to this day. 

Click here to see the 88-Inch Cyclotron's contributions to space exploration

When running, the facility is staffed 24-hours a day with additional support on call. Assistance is available for shipping and receiving. Contact us for current hourly rates. Bragg curve plots, published papers, and other useful information are available here on our website. For information on the experiment approval process, beam time scheduling, or technical details on beamline setup and operation, contact our Research Coordinator, Mike Johnson, at

More information is available here:

Protons (Cave 4A)

Heavy Ions (Cave 4B)

Neutrons (Cave 0)