Transient effects in an X-Band magnicon amplifier

Steven H. Gold; Arne W. Fliflet; Bahman Hafizi; Daniel F. Gordon; Allen K. Kinkead

doi:10.1109/TPS.2009.2038383

Transient effects in an X-Band magnicon amplifier

Steven H. Gold, Arne W. Fliflet, Bahman Hafizi, Daniel F. Gordon, Allen K. Kinkead

Research output: Contribution to journal › Article › peer-review

Abstract

The Naval Research Laboratory X-band magnicon is a frequency-doubling amplifier for accelerator applications at 11.4 GHz, with high power (10-20 MW), adjustable pulsewidth (200 ns-1 μs), stable gain (> 50 dB), and a modest tuning range (∼0.1%) but a narrow bandwidth (a few megahertz). The magnicon is the heart of a facility to study dielectric-loaded accelerating structures, and to drive a compact linear accelerator. In these applications, frequency control is important. However, it was recently observed that in short pulse (∼200 ns) operation, the output frequency does not match twice the drive frequency. This paper presents a brief description and analysis of this phenomenon as well as other transient effects that are observed in longer pulses.

Original language	English (US)
Article number	5404917
Pages (from-to)	1329-1336
Number of pages	8
Journal	IEEE Transactions on Plasma Science
Volume	38
Issue number	6 PART 1
DOIs	https://doi.org/10.1109/TPS.2009.2038383
State	Published - Jun 2010
Externally published	Yes

Keywords

Index Terms-High-power RF
Magnicon
Transient effects

ASJC Scopus subject areas

Nuclear and High Energy Physics
Condensed Matter Physics

Online availability

10.1109/TPS.2009.2038383

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title = "Transient effects in an X-Band magnicon amplifier",

abstract = "The Naval Research Laboratory X-band magnicon is a frequency-doubling amplifier for accelerator applications at 11.4 GHz, with high power (10-20 MW), adjustable pulsewidth (200 ns-1 μs), stable gain (> 50 dB), and a modest tuning range (∼0.1%) but a narrow bandwidth (a few megahertz). The magnicon is the heart of a facility to study dielectric-loaded accelerating structures, and to drive a compact linear accelerator. In these applications, frequency control is important. However, it was recently observed that in short pulse (∼200 ns) operation, the output frequency does not match twice the drive frequency. This paper presents a brief description and analysis of this phenomenon as well as other transient effects that are observed in longer pulses.",

keywords = "Index Terms-High-power RF, Magnicon, Transient effects",

author = "Gold, {Steven H.} and Fliflet, {Arne W.} and Bahman Hafizi and Gordon, {Daniel F.} and Kinkead, {Allen K.}",

note = "Funding Information: Manuscript received September 24, 2009; revised November 25, 2009; accepted December 2, 2009. Date of publication February 2, 2010; date of current version June 9, 2010. This work was supported by the Office of High Energy Physics, U.S. Department of Energy and the Office of Naval Research.",

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AU - Fliflet, Arne W.

AU - Hafizi, Bahman

AU - Gordon, Daniel F.

AU - Kinkead, Allen K.

N1 - Funding Information: Manuscript received September 24, 2009; revised November 25, 2009; accepted December 2, 2009. Date of publication February 2, 2010; date of current version June 9, 2010. This work was supported by the Office of High Energy Physics, U.S. Department of Energy and the Office of Naval Research.

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AB - The Naval Research Laboratory X-band magnicon is a frequency-doubling amplifier for accelerator applications at 11.4 GHz, with high power (10-20 MW), adjustable pulsewidth (200 ns-1 μs), stable gain (> 50 dB), and a modest tuning range (∼0.1%) but a narrow bandwidth (a few megahertz). The magnicon is the heart of a facility to study dielectric-loaded accelerating structures, and to drive a compact linear accelerator. In these applications, frequency control is important. However, it was recently observed that in short pulse (∼200 ns) operation, the output frequency does not match twice the drive frequency. This paper presents a brief description and analysis of this phenomenon as well as other transient effects that are observed in longer pulses.

KW - Index Terms-High-power RF

KW - Magnicon

KW - Transient effects

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Transient effects in an X-Band magnicon amplifier

Abstract

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