X-Band RF Power Sources for Accelerator Applications Mark Kirshner, Richard Kowalczyk, Craig Wilsen, Richard True, Ian Simpson and John Wray L-3 Communications Electron Devices 960 Industrial Road, San Carlos, CA 94070, USA 5 th Collaboration Meeting on X-band Accelerator Structure Design and Test Program May 17, 2011 This presentation consists of information published and generally available to the public and does not contain controlled technical data as defined within the International Traffic in Arms (ITAR) Part 120.10 or Export Administration Regulations (EAR) Part 734.7-11
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X-Band RF Power Sources for Accelerator Applications Mark Kirshner, Richard Kowalczyk, Craig Wilsen, Richard True, Ian Simpson and John Wray L-3 Communications.
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X-Band RF Power Sources for Accelerator Applications
Mark Kirshner, Richard Kowalczyk, Craig Wilsen,
Richard True, Ian Simpson and John Wray
L-3 Communications Electron Devices
960 Industrial Road, San Carlos, CA 94070, USA
5th Collaboration Meeting on X-band Accelerator
Structure Design and Test Program
May 17, 2011
This presentation consists of information published and generally available to the public and does not contain controlled technical data as defined within the International Traffic in Arms
(ITAR) Part 120.10 or Export Administration Regulations (EAR) Part 734.7-11
2May 17, 2011Electron Devices Division
Accelerator System ArchitectureL-3 EDD Products
Accelerated e-beam collides with tungsten target to generateMeV-level x-rays
Electron gun injects kV-level e-beam
Linear accelerator
M-592e-gun
Klystron or magnetron provides MW-level RF power
to accelerate the e-beam
M-5051vacuum window
L-4040 thyratron for modulator
L-5822 S-band klystron
PM-2000XX-band
magnetronL-6145 X-bandklystron
M-5055X-band
RF driver
3May 17, 2011Electron Devices Division
X-Band Magnetron ProductsWater-Cooled, 9.3 GHz
PM-450X Series
PM-1100X Series
PM-2000X Series
400 kW peak 1.8 MW peak 2.2 MW peak
1200 W ave 1600 W ave 600 W ave
35 – 38 kV 36 – 38 kV 34 – 38 kV
34 A 88 A 110 A
8 s pulse length
4.5 s pulse length
2.5 s pulse length
4May 17, 2011Electron Devices Division
X-Band Coaxial MagnetronTypical Performance
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
0 20 40 60 80 100
Ou
tpu
t Po
wer
[M
W]
Peak Anode Current [A]
Peak Power
9.292
9.294
9.296
9.298
9.3
9.302
9.304
9.306
9.308
0 20 40 60 80 100
Fre
qu
ency
[G
Hz]
Peak Anode Current [A]
Frequency Pushing
5May 17, 2011Electron Devices Division
0
100
200
300
400
500
600
700
800
0 5 10 15 20 25
Ma
xim
um
Re
pe
titi
on
Ra
te (
pp
s)
Pulse Length (microseconds)
Stable operation
PM-450X MagnetronMaximum Operating Conditions
6May 17, 2011Electron Devices Division
L-6145 X-Band Klystron
• Robust X-band klystron capable of reliable high peak and average power operation
• The solenoid can be purchased fromStangenes Industries under part number SI-020348
• Klystron, solenoid, oil tank and modulator can be integrated in a compact package
9May 17, 2011Electron Devices Division
M-5051 RF Vacuum Window
• Water-cooled vacuum window• 5 MW peak, 20 kW average
• Multipactor suppressant coating is applied to both sides of the beryllia window ceramic
• Additional windows with dual vacuum flanges available for accelerator system
1
1.1
1.2
1.3
8.9 9.3 9.7
VS
WR
Frequency [GHz]
HFSSMeasurement
10May 17, 2011Electron Devices Division
M-5055 X-Band RF Driver
• Solid-state amplifier to drive the L-6145 X-band klystron• Center frequency 9.3 GHz• Available in 50 watt or 100 watt configuration
11May 17, 2011Electron Devices Division
Conclusion
• L-3 Communications Electron Devices Division (EDD) has developed an array of RF components operating at 9.3 GHz to address the growing market for X-band accelerators
• Coaxial magnetrons with 400 kW to 2.2 MW peak power and average power to 1600 watts
• Klystrons to 5 MW peak and 20 kW average power• X-band RF drivers to 100 watts• High power RF vacuum windows