RADEF - Radiation Effects Facility
The RADEF facility is located in the Accelerator Laboratory at the University of Jyväskylä, Finland (JYFL). The facility includes two beam lines in the same cave, dedicated to proton- and heavy-ion irradiation studies of semiconductor materials and devices.
The cyclotron used at JYFL is a versatile, sector-focused accelerator. Its three external ion sources allow it to produce proton beams at energies ranging from about 500 keV to about 55 MeV, as well as heavy-ion beams with N, Ne, Si, Ar, Fe, Kr and Xe ions at energies up to 9.3 MeV/nucleon (1217 MeV for xenon). For more information on available species and their LET in silicon, please refer to our available cocktails section.
RADEF operates two different beam lines. The main line consists of a vacuum chamber, which includes a remote-controlled component movement apparatus, and ion beam diagnostic equipment for real-time analysis of beam quality and intensity. This beam line allows for low-energy (usually up to 6 MeV) proton irradiation in vacuum, and heavy-ion irradiation both in air and in vacuum.
The secondary line is dedicated to higher-energy (>6 MeV) proton irradiation in air. This line is also fitted with beam diagnostic equipment. Unlike the main beam line's, the proton line's component movement apparatus is not remote-controlled and the user has to operate it by hand.
For more information on our setup, please refer to our overview of the facility.
The control station for the RADEF equipment and the user work station are located outside of the experiment cave, in an adjoining room. A series of interfaces are available to link the devices under test to the user's test equipment. We advise our customers to check that their interface requirements are met to avoid possible setbacks on the day of the experiments. These interfaces are detailed on this page.
RADEF can supply equipment such as power supplies and oscilloscopes to fit its customer's needs. Readily available devices are listed on this page; please do not hesitate to make enquiries if you have a need for other specific equipment.