PPPS 2019

Session

2.1 Intense Beam Microwave Generation

O5B

26 Jun 2019, 10:00

DoubleTree at the Entrance to Universal Orlando

Conveners

2.1 Intense Beam Microwave Generation

• Rebecca Seviour (Supervisor)

966. Limits to High Power Amplification

Dr John Luginsland (Confluent Sciences, LLC)

26/06/2019, 10:00

2.1 Intense Beam Microwave Generation

Oral

JW Luginsland1*, JJ Watrous1, DH Simon2, and BW Hoff2
1 Confluent Sciences, LLC
2 Air Force Research Laboratory

There has been tremendous progress in the power levels of high-power electromagnetic sources, such as klystrons, magnetrons, and TWTs that produce power into the gigawatt (GW) range. The vast majority of these sources are oscillators, where there is not a controlled phase signal...

1056. Rep-rated Testing of a Compact Magnetron with Diffraction Output (MDO) and Plans for Testing the Full MDO*

Prof. Edl Schamiloglu (University of New Mexico)

26/06/2019, 10:30

2.1 Intense Beam Microwave Generation

Oral

The University of New Mexico (UNM) proposed a compact magnetron with diffraction output (MDO) that is consistent with a permanent magnet guide magnetic field [1,2]. This compact high power microwave (HPM) source was tested at UNM and the particle-in-cell simulations accurately predicted its experimental operation [3]. This compact MDO was then tested at NSWCDD using a rep-rated power...

946. Experimental Results of a Metamaterial-Enhanced Resistive Wall Amplifier Prototype*

Patrick Forbes (Electrical and Computer Engineering Department University of Wisconsin-Madison)

26/06/2019, 10:45

2.1 Intense Beam Microwave Generation

Oral

Theory and simulation predict the Metamaterial-Enhanced Resistive Wall Amplifier (MERWA) could be developed into a high power amplifier with wide instantaneous bandwidth${}^1$. Similar to a Resistive Wall Amplifier and Easitron${}^2$, the MERWA produces exponential slow space charge wave growth for a velocity modulated beam. In contrast to the Resistive Wall Amplifier and Easitron, our research...

1038. High Power Amplification Experiments on a Recirculating Planar Crossed-Field Amplifier

Mr Steven Exelby (University of Michigan)

26/06/2019, 11:00

2.1 Intense Beam Microwave Generation

Oral

The Recirculating Planar Crossed-Field Amplifier (RPCFA) is an S-band high-power microwave amplifier adapted from the Recirculating Planar Magnetron developed at the University of Michigan.1 The RPCFA has demonstrated amplification in excess of 16 dB for input signals up to 40 kW at frequencies ranging from 2.40 to 3.05 GHz. Pulsed power for the RPCFA is provided by the Michigan Electron Long...

1058. Inter-Digital Magnetron and Rippled-Field Magnetron: Two Remarkable Reincarnations of a Voltage-Tunable Magnetron*

Dr Andrey Andreev (University of New Mexico)

26/06/2019, 11:15

2.1 Intense Beam Microwave Generation

Oral

Originally all magnetrons were nonrelativistic [1]. The inter-digital magnetron (IDM) [2] is, perhaps, the most peculiar magnetron variant, operating at anode voltages $\le$ 5 kV. The rippled-field magnetron (RFM) [3], another variant, is relativistic, operating at voltages $\ge$ 1 MV. It came to our attention that the RFM [3] is the relativistic analog of the IDM [2].

The IDM consists of a...

875. High-Power Microwave Generation by a Double-Anode Virtual Cathode Oscillator

Mr Kazuki Nagao (Nagaoka University of Technology)

26/06/2019, 11:30

2.1 Intense Beam Microwave Generation

Oral

The virtual cathode oscillator (vircator) is one of the promising devices oscillating high-power microwaves. Simplicity and high-power capability are advantages. However, the low efficiency and frequency stability are serious problems. To improve oscillation efficiency, strengthen the feedback of the electromagnetic wave to the electron beam is important. To strengthen feedback, double-anode...

1266. Problems of development a cold-cathode magnetron in pulse mode for application in an accelerator

Prof. Sergiy Cherenshchykov

26/06/2019, 11:45

2.1 Intense Beam Microwave Generation

Oral

High efficiency and low construction costs of magnetron have a significant benefit for an accelerator RF feeding. Main disadvantage of magnetron is poor frequency stability. The disadvantage may overcome due to injection phase lock. This solution is ready for the pulsed mode operation of accelerator. Next step of a magnetron advantage development is application a secondary emission cold...