Irradiation facility and technique to increase LET for SEE testing on tandem accelerator

Heavy ion irradiation facility dedicated for single event effect ground simulation testing has been developed on Beijing HI-13 tandem accelerator. Two dimensional magnetic scanning method was used to produce a large and uniformly distributed beam. Non uniformity of beam distribution is less than 10% over an area of 100mm×100mm. In order to enhance the output energy of tandem accelerator highly stripped charge state beam has been successfully developed by so-called “magnetic rigidity simulation” technique. Gold ion with energy of 360 MeV and stripped probability of less than 0.01% has been obtained and successfully used in experiments. The beam purity is about 80%. The contamination is caused by ions of other charge state combinations due to close magnetic rigidities.