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Title: Pulsed depressed collector

Abstract

A high power RF device has an electron beam cavity, a modulator, and a circuit for feed-forward energy recovery from a multi-stage depressed collector to the modulator. The electron beam cavity include a cathode, an anode, and the multi-stage depressed collector, and the modulator is configured to provide pulses to the cathode. Voltages of the electrode stages of the multi-stage depressed collector are allowed to float as determined by fixed impedances seen by the electrode stages. The energy recovery circuit includes a storage capacitor that dynamically biases potentials of the electrode stages of the multi-stage depressed collector and provides recovered energy from the electrode stages of the multi-stage depressed collector to the modulator. The circuit may also include a step-down transformer, where the electrode stages of the multi-stage depressed collector are electrically connected to separate taps on the step-down transformer.

Inventors:
Issue Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1224820
Patent Number(s):
9,177,748
Application Number:
14/174,637
Assignee:
The Board of Trustees of the Leland Stanford Junior University
DOE Contract Number:  
AC02-76SF00515
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 Feb 06
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Kemp, Mark A. Pulsed depressed collector. United States: N. p., 2015. Web.
Kemp, Mark A. Pulsed depressed collector. United States.
Kemp, Mark A. Tue . "Pulsed depressed collector". United States. https://www.osti.gov/servlets/purl/1224820.
@article{osti_1224820,
title = {Pulsed depressed collector},
author = {Kemp, Mark A},
abstractNote = {A high power RF device has an electron beam cavity, a modulator, and a circuit for feed-forward energy recovery from a multi-stage depressed collector to the modulator. The electron beam cavity include a cathode, an anode, and the multi-stage depressed collector, and the modulator is configured to provide pulses to the cathode. Voltages of the electrode stages of the multi-stage depressed collector are allowed to float as determined by fixed impedances seen by the electrode stages. The energy recovery circuit includes a storage capacitor that dynamically biases potentials of the electrode stages of the multi-stage depressed collector and provides recovered energy from the electrode stages of the multi-stage depressed collector to the modulator. The circuit may also include a step-down transformer, where the electrode stages of the multi-stage depressed collector are electrically connected to separate taps on the step-down transformer.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {11}
}

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Works referenced in this record:

Klystron modulator system incorporating a pulsed depressed collector
conference, June 2013

  • Kemp, Mark A.; Jensen, Aaron; Neilson, Jeff
  • 2013 IEEE 40th International Conference on Plasma Sciences (ICOPS), 2013 Abstracts IEEE International Conference on Plasma Science (ICOPS)
  • DOI: 10.1109/PLASMA.2013.6633360

Pulsed depressed collector for high-efficiency RF systems
conference, May 2013

  • Kemp, Mark A.; Jensen, Aaron; Neilson, Jeff
  • 2013 14th International Vacuum Electronics Conference (IVEC), 2013 IEEE 14th International Vacuum Electronics Conference (IVEC)
  • DOI: 10.1109/IVEC.2013.6570962