Nondestructive Beam Diagnostic Using Diffraction Radiation

50199-98-I Nondestructive Beam Diagnostic Using Diffraction Radiation--STI Optronics, Inc., 2755 Northup Way, Bellvue, WA 98004-1403; (425) 827-0460 Dr. Wayne D. Kimura, Principal Investigator Dr. Kem E. Robinson, Business Official DOE Grant No. DE-FG03-98ER82673 Amount: $75,000 Advanced nondestructive beam diagnostics are needed which are capable of measuring and monitoring, in real-time, critical accelerator beam parameters such as divergence, profile, emittance, and bunch length. These diagnostics should also be compatible with automatic accelerator tuning and computer control. Accelerators, such as the 4-GeV Thomas Jefferson National Accelerator Facility, cannot use destructive diagnostics under continuous operation. However, conventional nondestructive diagnostics cannot easily provide all the beam information required. This project will develop a new diagnostic technique based upon diffraction radiation (DR), which is capable of measuring, in real-time and simultaneously, the beam transverse (spatial) distribution, longitudinal (temporal) distribution, divergence, emittance, and energy in a nondestructive manner. The design will be inherently compact and will be easily interfaced with computer control systems. The primary objectives of Phase I are to perform additional analysis to optimize the configuration, develop DR codes from existing transition radiation codes, and develop baseline designs for DR diagnostics. Prototype DR diagnostics will be constructed and tested during Phase II. These prototypes will then form the basis for commercial products, which would be customized depending on the end user¿s requirements. Commercial Applications and Other Benefits as described by the awardee: These diagnostics can be used on leptonhadron and ion accelerators and with moderate to high energy and low to high current beams. Because these diagnostic techniques will be nondestructive and compact in size, accelerator operators and users can use them to characterize the beam at multiple locations along the beamline and within their experiments. The beam information provided can be used for automated computer control of the accelerator. Commercial customers would include government, academic, medical, and industrial facilities._