FRIB Target Systems for Rare Isotope Beam Production

1. FRIB Target Systems for Rare Isotope Beam Production Georg BollenExperimental Systems Division Director

2. Outline • FRIB rare isotope production overview • Target facility overview • Non-conventional utilities • Radiation transport • Remote handling • Fragment separator • Magnets • Target and beam dump • Summary G. Bollen, May 2014 SPAFOA Meeting

3. FRIB Rare Isotope Production [1]In-flight Production and Separation Maximizes Science Reach • Rare isotope production via in-flight technique with primary beams up to 400 kW, 200 MeV/u uranium • Fast, stopped, and reaccelerated beam capability • Rare isotope production is within Experimental Systems project scope G. Bollen, May 2014 SPAFOA Meeting

4. FRIB Rare Isotope Production [2]In-flight Production and Separation Maximizes Science Reach • Production of rare isotope beams with 400 kW beam power using light to heavy ions up to 238U with energy ≥ 200 MeV/u • Large acceptance: ± 40 mrad (angular) and ± 5% (momentum) • High magnetic rigidity: 8 Tm after target • Three separation stages for high beam purity plus operational versatility • Design meets 400 kW beam power and heavy-ion challenges • Power densities • Radiation G. Bollen, May 2014 SPAFOA Meeting

5. Target FacilityAccommodates Rare Isotope Production Facilities • Target hot cell, subterranean • Production target • Fragment preseparator • Primary beam dump • Remote handling equipment • Target facility building high bay • Second and third stage of fragment separator • 50 ton bridge crane • Magnet power supplies • Support areas, three subterranean levels • Cascade ventilation • Remote handling gallery and control room • Non-conventional utilities • Waste handling G. Bollen, May 2014 SPAFOA Meeting

6. Target FacilityAccommodates Non-conventional Utilities • Non-conventional utilities (NCU) • Water cooling loops for beam dump and target • Primary and secondary HVAC system HVAC NCU Waste handling G. Bollen, May 2014 SPAFOA Meeting

7. Target Facility Radiation Safety Incorporated in Design • Detailed 3D radiation transport models to optimize shielding designs,radiation heating, component activation, air activation, skyshine G. Bollen, May 2014 SPAFOA Meeting

8. Target Facility Remote Handling for Safe and Efficient Operation • Maintaining activated preseparator beam line components located in the hot cell and managing activated waste • Remotely operated bridge crane • Window workstation • Remote Handling (RH) equipment lift • Remote viewing system • Hot cell lighting • In-cell tooling • Waste handling system 20 ton crane Vision system Utility embeds Hot cell lighting Bottom loading port (access to waste handling gallery) Window workstation RH equipment lift Temporary waste storage In-cell tooling G. Bollen, May 2014 SPAFOA Meeting

9. Fragment Separator Advanced Mechanical and Magnet Systems Primary beam dumpRotating water-filled drum Magnet systems outside hot-cellNew cold-iron superconducting magnetsReconfiguration of existing A1900 magnets Production targetRotating multi-slice graphite target Magnet systems in hot-cellRadiation tolerant/resistant warm-iron superconducting magnetsLocated inside large vacuum vessels G. Bollen, May 2014 SPAFOA Meeting

10. Fragment Separator Vacuum Vessels Life-of-Facility Items • Accommodate preseparator rare isotope production and separation components • Production target • Beam dump • Magnets • Diagnostics • Life-of-Facility items • Design with high level of care • Large size G. Bollen, May 2014 SPAFOA Meeting

11. Fragment Separator Superconducting Magnets Tolerate Radiation Fields • Radiation resistant/tolerant design for superferric magnets in hot cell • Quadrupoles with “warm” (i.e. not cryogenic) iron and radiation resistant/tolerant coils • High Temperature Superconductor (HTS) quadrupole(built by BNL) • Dipoles with radiation resistant HTS coils and “warm” iron • Radiation resistant room-temperature multipoles • Remote handling • Proven designs (based on existing NSCL designs) for magnets beyond hot cell • Quadrupole triplets with “cold” (at cryogenic temperature) iron • Dipoles and quadrupoles using established superferric magnet technology G. Bollen, May 2014 SPAFOA Meeting

12. Fragment Separator Target and Beam Dump Based on Advanced Concepts • Rotating multi-slice rotating carbon target • Absorbs up to 100 kW beam power and meets high-power density radiation damage challenge • Prototyped and e-beam tested • Radiation damage annealing demonstrated • Detailed mechanical design ongoing • Different target configurations for all FRIB primary beams defined • Rotating water-filled drum primary beam dump • Absorbs up to 325 kW beam • Primary beam stops in water • Full scale titanium prototype drum fabricated and mechanical and flow tests performed G. Bollen, May 2014 SPAFOA Meeting

13. Summary • FRIB target systems for rare isotope beam production designed to meet performance requirements • Rare isotope production via in-flight technique with primary beams up to 400 kW, 200 MeV/u uranium • FRIB will provide fast, stopped, and reaccelerated beam capability • FRIB rare isotope beams will enable new discoveries G. Bollen, May 2014 SPAFOA Meeting