Completion and operations of ISAC-I and extension to ISAC-II

The post-accelerator for ISAC includes a 35.4 MHz RF quadrupole (RFQ) to accelerate beams of A/q ⩽ 30 from 2 keV/u to 153keV/u and a post-stripper, 106MHz variable energy drift tube linac (DTL) to accelerate ions of 3 ⩽ A/q ⩽ 6 to a final energy from 0.153 to 1.53 MeV/u. Most recently the DTL has been installed with first acceleration to full energy achieved in Dec. 2000. The design concept, present status and early operating experience of the ISAC linear accelerator complex is summarized. TRIUMF has also received funding through to 2005 to proceed with an extension to the ISAC facility, ISAC-II, to permit acceleration of radioactive ion beams up to energies of at least 6.5 MeV/u for masses up to 150. The accelerator design and present status of the project is presented