Experimental and theoretical investigations of a magnetically insulated line oscillator (MILO)

Book · Wed Nov 01 04:00:00 EST 1995

OSTI ID:116384

Calico, S E ^[1]; Clark, M C; Lemke, R W ^[2]; Scott, M C ^[3]

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1. PL/WSR, Kirtland AFB, NM (United States)
2. Sandia National Labs., Albuquerque, NM (United States)
3. Maxwell Labs., Inc., Albuquerque, NM (United States)

The Electromagnetic Sources Division of the Advanced Weapons and Survivability Directorate at the Phillips Laboratory is dedicated to the development of IHPM sources. This paper will report on the recent work done on a magnetically insulated line oscillator (MILO). The MILO is a linear magnetron type device with the bias magnetic field supplied by the current flowing through the tube, hence no externally applied magnetic field is required. This work concentrates on the axial extraction of the microwave power in contrast to most to the previous work which concentrated on the radial extraction of power. Theory has predicted and experiments have shown that a number of parameters, including but not limited to, the boundaries at the ends of the slow wave structure, the location of the emission region, the method of launching the beam, the anode-cathode gap, and the number of cavities, all have a significant effect on the operation of the tube. A number of tests at diode voltages from 150 kV to over 500 kV have been conducted to gain a better understanding of the mechanisms controlling the operation of the device. To date RF powers over 1 GW for short pulses (<100 ns) have been achieved with the goal of further increasing the output power and increasing the pulsewidth to 100`s of nanoseconds. The results of the these experiments and corresponding simulations are reported here.

• OSTI ID: 116384
• Report Number(s): CONF-950793--; ISBN 0-8194-1916-8
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
BEAM EXTRACTION
CAVITY RESONATORS
DESIGN
EFFICIENCY
EXPERIMENTAL DATA
MICROWAVE TUBES
MILITARY EQUIPMENT
OPERATION
PERFORMANCE
RF SYSTEMS