BASE - Rad Effects

About the BASE Facility 

The BASE Facility operates in conjunction with the 88-inch Cyclotron at Lawrence Berkeley National Laboratory to provide beams of protons and heavy ions for radiation effects testing. When running, the facility is manned 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 Mike Johnson at (510) 486-4389 or

More information is available here:

Protons (Cave 4A)

Heavy Ions (Cave 4B)

Neutrons (Cave 0) 

BASE Operator's Manual (for 4B Heavy Ion Software)