An Advanced Linear Accelerator Facility for Microelectronic Dose Rate Studies P.E. Sokol and S.Y.Lee Indiana University

Outline Introduction – NSWC Crane Radiation Effects Program Crane Needs Advanced Accelerator Facility – Enhanced Capabilities – Improved Performance Summary

Strategic Systems NSWC Crane is the leader in the Navy Strategic Systems community for failure and material analysis of space and high reliability electronics and the integration of Commercial Off-the-Shelf products. NSWC Crane supports……. Guidance Systems Missile Systems Fire Control Systems Navigation Systems GPS Systems Radiation Tolerant Electronics Thru…… Design Modeling and Simulation Design of Radiation Tolerant Microelectronics Design of High-Reliability Microelectronics Application and Integration of Commercial Off-the-Shelf Technology Systems Engineering Inertial Sensor Expertise Satellite and Missile Electronics Radiation Testing Failure and Material Analysis Component Reliability and Quality Analysis Component Destructive Physical Analysis GPS Receiver Integration NSWC Crane is assigned as the… Leader in Radiation Tolerant Electronics Leader in Commercial Off-the-Shelf Technology "911" Engineering Activity for Strategic Systems Program Office Contacts to Request More Information

Radiation Effects Solar Protons & Heavy Ions Galactic Cosmic Rays Trapped Particles Natural Environments Man Made Environments NSWC Crane’s Strategic Mission support testing of electronics in various radiation environments – both manmade and natural. Natural Environments Solar Protons Galactic Cosmic Rays (Neutrons) Man Made Environments Neutrons Gamma Rays

Current Crane Capabilities Capabilities Dose Rate (Rad/s)1x10 12 Pulse Width (narrow)10-50 nS Pulse Width (wide)1-5 uS Beam Spot Size40 mm Pulse Rep Rate10 shots/sec Energy40-60 meV Most powerful electron accelerator in the Department of Defense Moore’s Law MHz GHz Pentium Linac – 1.3 GHz Klystrons

IUCF is a multidisciplinary laboratory performing research and development in the areas of accelerator physics, nuclear physics, materials science, and medical applications of accelerators. 130 Staff 60 Faculty, Postdocs, students Funding - $20M/yr IU, NSF, DOE, DOD NIH State&Federal Funds Mission Research & Development Service Education Indiana University Cyclotron Facility

Robotics Patient Positioning, Alignment, Heavy Equipment Control Particle Accelerators Design, Construction, Diagnostics, Computer Control, Beam Transport Particle Detectors Dose Monitoring, Calibration, Data Acquisition, Electronics Biomedical Equipment Development Energy Measurement, Range Modulator, Wobbler magnet and controls IUCF Technical Capabilities

Proposed Solution Key Proposal Features: Use Storage Ring to: 1.Accumulate and compress LINAC macropulses 2.Eliminate RF structure induced by LINAC 3.Non linear beam optics for uniform irradiation

Debunching To match the beam from the linac to the storage ring, debunching method is used. By changing the rf frequency, non-adiabatically, each bunch rotates, and then N bunches become one single bunch in the synchrotron. The debunching time is determined by

High Dose Rate Accumulate charge in storage ring nC Deliver large charge in short period (~50 nS) High Dose Rates ~ rad/sec

Secondary Goals X-ray Source Bremmelstrung Radiation Inverse Compton Scattering Radiation Effects Studies Scientific Research Accelerator Physics Studies

Inverse Compton Scattering X-ray Source

Existing Resources Compact Injector Syncrotron 240 MeV Proton Accelertor Operated at IUCF Proton Radiation Effects Studies Existing Components Dipole Magnets Power Supplies RF Cavities Vacuum Systems

Phase I/II Concept Validation And Development Medical Linac Storage Ring Limited Test Area

Phase III

Summary Crane Needs Continuous Beam High Dose Rates X-ray Capabilities IU Needs Scientific Research Facility Accelerator Physics Research