Refurbish the Cyclotron
1. The 500 MeV H⁻ cyclotron will retain its key role in supporting a multifaceted science program based on primary proton beams. Deployment of the intensity upgrade will enhance the extracted beam current from 250 A to 300 A by 2015 and above 400 A in the future while preserving the present reliability level with machine uptime of above 90%. A significant component of this program is refurbishing or replacing old equipment, some of which has been in operation for 35 years and must be considered close to its lifespan. New beam extraction techniques and algorithms for beam intensity stabilization will be developed.
Specialized Actinide Beam Line
2. A major driver of the need for increased cyclotron beam current is a new primary proton beam line that will deliver protons to a new actinide target station (one more station will be added around 2017) in the ISAC complex. This line will have an advanced beam transport design in comparison to the existing ISAC beam line and will include a beam dump compatible with 200 A operation to facilitate cyclotron tuning and development.
New Target Station
3. To maintain its world leadership in ISOL techniques, TRIUMF continually invests in the development of new exotic beams by studying new target materials, inventing new target configurations, and employing new on-line ion sources. A new target station, in combination with high-intensity proton and electron driving beams, will enhance the RIB development capabilities. ISAC beam time will be efficiently shared between experiments and developments to the maximum benefit of the RIB users.
4. The ISAC complex of heavy-ion linear accelerators has demonstrated excellent reliability combined with the flexibility to accelerate different ion species over a wide range of energies. Expansion of the ISAC accelerator facilities will increase the mass reach of accelerated ions into the terra incognita, opening new frontiers for nuclear physics experiments. A major goal of the ISAC facility upgrade in the longer term is to provide, simultaneously, multiple exotic beams delivered to the three distinct experimental areas, where eight state-of-the-art unique apparatuses are available to produce unique science.
5. The electron linear accelerator (e-linac) and its photo-fission based actinide target station represent the major laboratory infrastructure initiative for the Five-Year Plan. It will provide an additional source of neutron-rich isotopes for nuclear physics, and of ⁸Li for β-NMR studies in molecular and materials science. The accelerator will be based on the 1.3 GHz superconducting radio-frequency (SRF) technology that incorporates the latest advancements in this field from the frontier ILC design. A major distinction of the e-linac is its continuous wave (cw) mode of operation. Our R&D efforts towards improvements of high-power machine components, such as RF input couplers, will benefit all future MW regime facilities such as injectors for fourth-generation light sources or accelerator-driven subcritical (nuclear) reactors for power generation.