Rare Isotope Accelerator (RIA) Remote Maintenance Concepts

1. Rare Isotope Accelerator (RIA) Remote Maintenance Concepts Dave Conner Oak Ridge National Laboratory RIA R&D Participants: Argonne National Lab: J. Nolen Lawrence Berkley Nation Lab: L. Heilbronn Lawrence Livermore National Lab: L. Ahle, J. Boles, S. Reyes, W. Stein Los Alamos National Laboratory: Dave Viera Michigan State University: I. Baek, G. Bollen, M. Hausmann, D. Lawton, P. Mantica, D. Morrissey, R. Ronningen, B. Sherrill, A. Zeller Oak Ridge National Lab: J. Beene, T. Burgess, D. Conner, T. Gabriel, I. Remec, M. Wendel

2. RIA Overview RIA will be a basic science user facility producing high-energy particle beams of rare isotopes for nuclear physics research. Accelerator – Super-conducting, continuous beam, linac capable of accelerating all ions from protons through uranium nuclei. Targets – Isotope Separation on Line (ISOL) and Fragmentation in flight Fragmentation method involves colliding a heavy ion into a low-Z target material. The resulting spread of particles is passed through a magnetic field which directs the isotope of interest into the experimental area while the remaining hit a beam dump. ISOL method uses a high density target material bombarded with a proton beam. The resulting particles are quickly ionized and directed into the experimental area. Design Philosophy – Multiple target stations Maximizes availability of the facility System capable of remote change with active beam on adjacent target Control background radiation and contamination to allow for personnel access into target bay with beam off. Project Status – Approximately half way into a 3 year R&D cycle including efforts in the areas of beam simulation, linac design, target design, shielding simulations, and remote maintenance considerations.

3. A Possible RIA Site Layout ACCELERATOR TARGET BUILDING EXPERIMENTAL AREAS

4. Size Comparison RIA TARGET BAY SNS SERVICE BAY

5. RIA Target Gallery Layout ISOL TARGETS FRAGMENTATION TARGETS HOTCELL AREA WASTE DISPOSAL AREA TRANSFER CELL CLEAN MAINT. STORAGE AREA 75m x 19.5m

6. Requirements for RIA Target Building Remote Maintenance • Large Hot Cell Remote Handling Equipment • 50 and 100 Ton Cranes • Large Hot Cell Configuration and Function • 75m x 20m x 13m • Areas separated by shield doors • Component Design for Remote Handling • “Beam On” target changes • Activation ,radiation damage of components • Remote Tooling • Lifting fixtures • Special couplings

7. Crane and Servomanipulator Combinations • Overhead bridge crane is mounted above the servo bridge • Servomanipulator and transporter with Aux hoist must be able to pass bridge crane to operate on both sides of the hook • Retrieving tools and lift fixtures is difficult and time consuming • RIA will require multiple cranes and servo systems to provide backup and reduce turn-around times.

8. Bridge Mounted Servomanipulator • Advantages: • Highly dexterous handling • Force reflecting • 5 to 8 X hands-on task times • Reduces need and cost of special remote handling features on components • Moderately powerful • Disadvantages: • Expensive • Complex and potentially unreliable • Mechanically compliant arm limits positioning accuracy in robotic mode

9. Identification of Tasks Remote handling tasks must be identified early; the task list is the basis of design for the RH system and the components

10. RIA Target Building 100 TON HIGHBAY CRANE FRAG MAINTENANCE AREA FRAGMENTATION TARGET STATIONS DUAL SERVOMANIPULATORS (SHOWN IN STORAGE POSITION) HIGH BAY AREA TRANSFER CELL (HANDS ON MAINT.) 50 TON GALLERY CRANE ISOL TARGET STATIONS BASEMENT/ WASTE DISPOSAL INCELL SHIELD DOORS

11. Fragmentation Target SHIELDING BEAM DUMP FLIGHT TUBE BEAM DIANOSTICS LI TARGET QUADRAPOLE SET DIPOLE

12. Beam Dump Removal

13. ISOL Target Configuration STEEL SHIELDING CONCRETE SHIELDING BEAM WINDOW BEAM DUMP TARGET

14. ISOL Target Utilities LIFTING FEATURES POWER / INSTR JUMPERS LIGHT WATER JUMPERS HEAVY WATER JUMPERS THERMOCOUPLE CONNECTORS SPRING LOADED CAPTURED BOLTS GAS FLEXIBLE HOSES TURBO VACUUM PUMPS

15. Module Design - MOST FREQUENTLY CHANGED COMPONENT - WINDOW WORKSTATION TASK - MULTIPLE CONNECTIONS - ACCESS AND LIFTING CONSTRAINTS

16. Shielded Hot-Cell • SHIELDED MODULE MAINTENANCE HOT-CELL • MINIMIZES COMPONENT EXPOSURES • - MINIMIZES LOOSE CONTAMINATION

17. ISOL Target Video

18. RIA Continuing Efforts • Define and adapt utility connections for remote maintenance as target designs evolve • Estimate component lifetimes with more accuracy as activation simulations become available • Define an operational senario and schedule normal work flow • Specify the requirements for the mobile workstations needed to perform the above work on schedule (loads, speeds, etc) • Define the number, location and type of cameras needed for the system • Design unique couplings and tooling required for the large components