Modeling and Simulation (M&S) of a Multiple Beam Inductive Output Tube (MB-IOT) Navy SBIR FY2008.1 Sol No.: Navy SBIR FY2008.1 Topic No.: N08-049 Topic Title: Modeling and Simulation (M&S) of a Multiple Beam Inductive Output Tube (MB-IOT) Proposal No.: N081-049-0069 Firm: Beam-Wave Research, Inc. 5406 Bradley Boulevard Bethesda, Maryland 20814 Contact: Edward Wright Phone: (510) 487-8044 Abstract: The multiple beam inductive output tube (MB IOT) will play a vital role as a high-power microwave source to drive the accelerator cavities used in future free electron lasers for military systems. There is a great deal that is still unknown about the complex beam wave interaction inherent in conventional IOTs; their development has largely been a cut-and-try endeavor due to a lack of available modeling and simulation tools capable of handling the complexities of this class of vacuum electron device. Issues persist today that limit their performance and reduce manufacturing yield. We propose the development of a suite of self-consistent, physics-based finite element particle in cell codes specifically tailored to address the unique modeling and simulation needs of IOTs and ultimately MB IOTs, in an effort to shed light on the complex nature of their beam-wave interaction, which is the first step on a path to improving performance and yield. Benefits: There are a number of applications that will benefit from the development of MB IOT technology. MB IOT use will be commonplace in the coming decades to drive high-power energy recovery linear accelerators (ERL) used in free electron lasers for military and scientific use. The MB IOT is enabling technology for compact, light weight military ERL systems. The MB IOT could potentially replace all of the megawatt-class UHF klystrons in use today at many synchrotron light sources around the world due to their increased operational efficiency, following the same trends observed in the U.S. UHF-TV broadcast markets. The development of MB IOT technology would maintain U.S. Industry's dominance in modern vacuum electron device manufacturing and sales. The first step in this process is to create modeling and simulation tools capable of providing designers with the ability to develop the high-level intuition needed for novel performance-improving, high-yield IOT and MB IOT designs. Return