60 keV beam transport line and switch-yard for ISAC

The ISAC project under construction at TRIUMF is to consist of radioactive ion sources, a high resolution mass separator, a low-energy (60 keV) experimental area, RFQ and DTL linacs to reach 1.5 MeV per atomic mass unit (amu), and a high-energy experimental area. Additionally, there will be a stable off-line source primarily for commissioning the linacs but also for use by the low-energy experimental program. The transport line which connects these elements therefore includes a switch which allows either the radioactive beam to supply the low energy area simultaneously with the off-line source supplying the RFQ, or the radioactive beam supplying beam to the RFQ simultaneously with the off-line source supplying beam to the low-energy experiments. The maximum ion source voltage is 60 kV. The RFQ accepts particles with 2 keV per amu, so masses less than 30 must have lower energy and masses larger than 30 can only be accelerated if they are multiply-charged