HPM Frequency, Phase, and Mode-Locking of Recirculating Planar Magnetron
Abstract
Coherent, long-pulse, high power microwaves (HPM) are crucial to many Air Force directedenergymissions. UM proposes to continue our 30 plus year history of collaboration with AFRLscientists on pulsed power-HPM. Building upon the successful generation of high powermicrowaves from the UM’s patented Recirculating Planar Magnetron (RPM) with AFRLconstructed,Coaxial-All-Cavity-Extraction (RPM-CACE), we propose to utilize this device to explore frequency-locking and phase-locking at power levels of 100’s MW. The RPM-CACE geometry is ideal for these experiments because of direct external, RF connection to all cavities in the device. A recently-AFRL-patented concept by Dr. Brad Hoff will be tested as part of this research. This concept covers the innovative modification of the RPM that separates the even versus- odd pi-modes, which can be a major source of mode competition. In our continuing collaboration with the AFRL group, experiments at UM will compare variants of the AFRL mode locking invention to UM RPM designs to characterize the HPM performance. All major facilitiesexist at the UM, including the MELBA-C, generating parameters of -0.3 to -0.5 MV, 1-10 kA and long pulse lengths of 0.3-1 microsecond. High-power microwave priming sources will be utilized in innovative geometries to discover the conditions for frequency, phase, and mode-locking.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 07, 2023
- Source ID
- FA95502110184
Entities
People
- Ronald Gilgenbach
Organizations
- Air Force Office of Scientific Research
- Board of Regents of the University of Michigan
- United States Air Force