RADiation Effects Facility RADEF

RADiation Effects Facility, JYFL

Introduction

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.

SETUP:
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 (from nitrogen to xenon) 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.

TEST EQUIPMENT:
RADEF can supply equipment such as power supplies and oscilloscopes to fit its customer's needs. Readily available devices are listed here; please do not hesitate to make enquiries if you have a need for other specific equipment.

CONTROL INTERFACES:
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.

ACCELERATOR:
The cyclotron used at JYFL is a versatile, sector-focused accelerator, producing beams from hydrogen to xenon. The accelerator is equipped with three external ion sources. There are two electron cyclotron resonance (ECR) ion sources designed for high-charge-state heavy ions, and a multicusp ion source for intense beams of protons.
For heavy ions, the maximum attainable energy is 9.3 MeV/nucleon. The nominal energy range for proton beams is from a few MeVs up to ~60 MeV, although experimental beams down to 0.5 MeV can be obtained on request. Details on the heavy ion cocktails provided by RADEF can be found on this page.