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Title: Advanced, phase-locked, 100 kW, 1.3 GHz magnetron

Abstract

Calabazas Creek Research, Inc., in collaboration with Fermilab and Communications & Power Industries, LLC, is developing a phase-locked, 100 kW peak, 10 kW average power magnetron-based RF system for driving accelerators. Here, phase locking will be achieved using an approach originating at Fermilab that includes control of both amplitude and phase on a fast time scale.

Authors:
 [1];  [1];  [1];  [2];  [2];  [3];  [3]
  1. Calabazas Creek Research Inc., Palo Alto, CA (United States)
  2. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  3. Communications and Power Industries LLC, Beverly, MA (United States)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1362140
Report Number(s):
FERMILAB-CONF-16-685-AD
Journal ID: ISSN 0094-243X; 1517004
Grant/Contract Number:
AC02-07CH11359
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1812; Journal Issue: 1; Journal ID: ISSN 0094-243X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Read, Michael, Ives, R. Lawrence, Bui, Thuc, Pasquinelli, Ralph, Chase, Brian, Walker, Chris, and Conant, Jeff. Advanced, phase-locked, 100 kW, 1.3 GHz magnetron. United States: N. p., 2017. Web. doi:10.1063/1.4975880.
Read, Michael, Ives, R. Lawrence, Bui, Thuc, Pasquinelli, Ralph, Chase, Brian, Walker, Chris, & Conant, Jeff. Advanced, phase-locked, 100 kW, 1.3 GHz magnetron. United States. doi:10.1063/1.4975880.
Read, Michael, Ives, R. Lawrence, Bui, Thuc, Pasquinelli, Ralph, Chase, Brian, Walker, Chris, and Conant, Jeff. Mon . "Advanced, phase-locked, 100 kW, 1.3 GHz magnetron". United States. doi:10.1063/1.4975880. https://www.osti.gov/servlets/purl/1362140.
@article{osti_1362140,
title = {Advanced, phase-locked, 100 kW, 1.3 GHz magnetron},
author = {Read, Michael and Ives, R. Lawrence and Bui, Thuc and Pasquinelli, Ralph and Chase, Brian and Walker, Chris and Conant, Jeff},
abstractNote = {Calabazas Creek Research, Inc., in collaboration with Fermilab and Communications & Power Industries, LLC, is developing a phase-locked, 100 kW peak, 10 kW average power magnetron-based RF system for driving accelerators. Here, phase locking will be achieved using an approach originating at Fermilab that includes control of both amplitude and phase on a fast time scale.},
doi = {10.1063/1.4975880},
journal = {AIP Conference Proceedings},
number = 1,
volume = 1812,
place = {United States},
year = {Mon Mar 06 00:00:00 EST 2017},
month = {Mon Mar 06 00:00:00 EST 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

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  • Discussed herein is a method for maintaining a constant level of RF power buildup in a TW resonant ring linear accelerator by accurately phase locking the electrical length of the ring, without the use of an adjustable phase shifter or the need to measure RF phase or power around the ring and without the need for temperature sensing or temperature control of the resonant ring accelerator. The RF and beam performance of a 9.5 GHz phase locked TW resonant ring linear accelerator is discussed, and a method of extending this technique to give an RF power buildup of 4:1 andmore » a 100 MV/m gradient in a 17 GHz linear accelerator is presented. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.« less
  • The design and operation of a 100 kW, 140 GHz pulsed gyrotron are reported. To our knowledge, this is the highest frequency at which high gyrotron output power (greater than or equal to 100 kW) has been achieved. Results are presented for gyrotron operation in the range of magnetic field from 4 to 7 T, voltage from 23 to 80 kV and current up to 7.5 A. Near a value of magnetic field of 5.4 T, an output power of 100 kW was obtained at 140.4 GHz in single mode operation in the TE/sub 031/ resonator mode.
  • At the Forschungszentrum Karlsruhe, Germany, a compact gyrotron system was established in 1994 to investigate technological applications in the field of high-temperature materials processing by means of millimeter-wave (mm-wave) radiation. Besides the improvement of the system design, research activities are mainly engaged in studies on debindering and sintering of various types of advanced structural and functional ceramics. Due to volumetric heating and enhanced sintering kinetics, the application of microwaves allows one to shorten the processing rime and therefore reduce energy consumption. Besides these effects, microwave technology gives the unique possibility of influencing the microstructure and physical properties of the ceramicmore » materials. This paper will discuss the benefits of the mm-wave technology with respect to sintering of structural ceramics, such as TiO[sub 2]-ZrO[sub 2]-MgO multicomponent ceramics, nanocrystalline oxide ceramics, and Si[sub 3]N[sub 4], as well as lead-zirconate-titanate piezoceramics as one of the most interesting classes of functional ceramics.« less
  • The applications of magnetrons to high power proton and cw electron linacs are discussed. An experiment is described where a 2.45 GHz magnetron has been used to drive a single cell superconducting cavity. With the magnetron injection locked, a modest phase control accuracy of 0.95┬░ rms has been demonstrated. Factors limiting performance have been identified.