The Design of a 100-GHz CARM Oscillator Experiment

Robert B. McCowan; Arne W. Fliflet; Steven H. Gold; A. K. Kinkead; W. Murray Black; Victor L. Granatstein; Mark S. Sucy

doi:10.1109/16.34279

The Design of a 100-GHz CARM Oscillator Experiment

Robert B. McCowan, Arne W. Fliflet, Steven H. Gold, A. K. Kinkead, W. Murray Black, Victor L. Granatstein, Mark S. Sucy

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

Abstract

The design of a 10-20-MW 40-ns cyclotron auto-resonance maser (CARM) is presented. The basic components of CARM are a pulseline accelerator, magnetic-field coils, a novel 600-kV 200-A field-emission electron gun designed for p_┴/p_z = 0.6 and ∆p_z/p_z < 3 percent, and a “whispering-gallery” mode rippled-wall cavity, designed for a high Q for the desired CARM mode and low Q for competing gyrotron modes. The NRL CARM operates with a wave group velocity that is less than optimum for autoresonance, but where the cyclotron maser instability is strong. By keeping the interaction region short (less than 10 cyclotron orbits), the effect of velocity spread is reduced, and the efficiency can be quite high; computer simulations indicate that the device will operate at efficiencies greater than 20 percent.

Original language	English (US)
Pages (from-to)	1968-1975
Number of pages	8
Journal	IEEE Transactions on Electron Devices
Volume	36
Issue number	9
DOIs	https://doi.org/10.1109/16.34279
State	Published - Sep 1989
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Online availability

10.1109/16.34279

Library availability

Discover UIUC Full Text

Cite this

@article{de809a6493874f66a44a7abd7f019685,

title = "The Design of a 100-GHz CARM Oscillator Experiment",

abstract = "The design of a 10-20-MW 40-ns cyclotron auto-resonance maser (CARM) is presented. The basic components of CARM are a pulseline accelerator, magnetic-field coils, a novel 600-kV 200-A field-emission electron gun designed for p┴/pz = 0.6 and ∆pz/pz < 3 percent, and a “whispering-gallery” mode rippled-wall cavity, designed for a high Q for the desired CARM mode and low Q for competing gyrotron modes. The NRL CARM operates with a wave group velocity that is less than optimum for autoresonance, but where the cyclotron maser instability is strong. By keeping the interaction region short (less than 10 cyclotron orbits), the effect of velocity spread is reduced, and the efficiency can be quite high; computer simulations indicate that the device will operate at efficiencies greater than 20 percent.",

author = "McCowan, {Robert B.} and Fliflet, {Arne W.} and Gold, {Steven H.} and Kinkead, {A. K.} and Black, {W. Murray} and Granatstein, {Victor L.} and Sucy, {Mark S.}",

year = "1989",

month = sep,

doi = "10.1109/16.34279",

language = "English (US)",

volume = "36",

pages = "1968--1975",

journal = "IEEE Transactions on Electron Devices",

issn = "0018-9383",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "9",

}

TY - JOUR

T1 - The Design of a 100-GHz CARM Oscillator Experiment

AU - McCowan, Robert B.

AU - Fliflet, Arne W.

AU - Gold, Steven H.

AU - Kinkead, A. K.

AU - Black, W. Murray

AU - Granatstein, Victor L.

AU - Sucy, Mark S.

PY - 1989/9

Y1 - 1989/9

N2 - The design of a 10-20-MW 40-ns cyclotron auto-resonance maser (CARM) is presented. The basic components of CARM are a pulseline accelerator, magnetic-field coils, a novel 600-kV 200-A field-emission electron gun designed for p┴/pz = 0.6 and ∆pz/pz < 3 percent, and a “whispering-gallery” mode rippled-wall cavity, designed for a high Q for the desired CARM mode and low Q for competing gyrotron modes. The NRL CARM operates with a wave group velocity that is less than optimum for autoresonance, but where the cyclotron maser instability is strong. By keeping the interaction region short (less than 10 cyclotron orbits), the effect of velocity spread is reduced, and the efficiency can be quite high; computer simulations indicate that the device will operate at efficiencies greater than 20 percent.

AB - The design of a 10-20-MW 40-ns cyclotron auto-resonance maser (CARM) is presented. The basic components of CARM are a pulseline accelerator, magnetic-field coils, a novel 600-kV 200-A field-emission electron gun designed for p┴/pz = 0.6 and ∆pz/pz < 3 percent, and a “whispering-gallery” mode rippled-wall cavity, designed for a high Q for the desired CARM mode and low Q for competing gyrotron modes. The NRL CARM operates with a wave group velocity that is less than optimum for autoresonance, but where the cyclotron maser instability is strong. By keeping the interaction region short (less than 10 cyclotron orbits), the effect of velocity spread is reduced, and the efficiency can be quite high; computer simulations indicate that the device will operate at efficiencies greater than 20 percent.

UR - http://www.scopus.com/inward/record.url?scp=0024739318&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024739318&partnerID=8YFLogxK

U2 - 10.1109/16.34279

DO - 10.1109/16.34279

M3 - Article

AN - SCOPUS:0024739318

SN - 0018-9383

VL - 36

SP - 1968

EP - 1975

JO - IEEE Transactions on Electron Devices

JF - IEEE Transactions on Electron Devices

IS - 9

ER -

The Design of a 100-GHz CARM Oscillator Experiment

Abstract

ASJC Scopus subject areas

Online availability

Library availability

Related links

Fingerprint

Cite this