Presentation on theme: "X Band Vacuum Devices Presented by: Tony Johns, CPI Europe, Surrey, England Tel: +44 (1932) 256 935 Fax: +44 (1932) 241 271 Mobile: +44 (7880) 507 913."— Presentation transcript:
X Band Vacuum Devices Presented by: Tony Johns, CPI Europe, Surrey, England Tel: +44 (1932) Fax: +44 (1932) Mobile: +44 (7880) With material from: Adam Balkcum, Steve Lenci, Mike Cusick, Peter Kolda CPI, Palo Alto, California, USA
Historical Timeline : Eimac Division founded as Eitel McCullough, Inc. 1948: CPI is originated as founding technology group of Varian Associates 1954: CMP Division is established in Canada 1959: Varian Associates acquires Bomac Labs in Beverly, MA. 1965: Eitel-McCullough merges with Varian Associates to form Eimac Division 1971: Varian integrates SFD Labs of Union, NJ with Beverly MA, division renamed BMD 1990: Eimac awarded an Emmy for technological achievement Klystrode IOT 1995: Leonard Green & Partners, L.P. purchases entire Electron Devices Business from Varian and forms CPI 2001: Current management team takes leadership : Cypress Group Acquires CPI CPI Acquires Econco Broadcast Service 2006: CPI stock publicly trades - NASDAQ: “CPII" MPP & Eimac divisions consolidate : CPI acquires Malibu Research Associates
Communications & Power Industries Inc. Publicly held NASDAQ: “CPII" Established in August 1995 Worldwide Sales and Service Organization 1,700 Employees Worldwide Six autonomous business units: BMD Beverly, MA, U.S.A. CMP Georgetown, ONT, Canada Econco Woodland, CA, U.S.A. MPP Palo Alto, CA, U.S.A Satcom Georgetown, ONT, Canada (Manufacturing) Palo Alto, CA, U.S.A (R&D, Marketing, Service) Malibu Research Associates, Camarillo, CA, U.S.A.
Beverly, MA Beverly Microwave Products Division Georgetown, Ontario, Canada Communications & Medical Products Division —Manufacturing Operation 2 Manufacturing/R&D Locations Palo Alto, California —R&D, Marketing, Service Woodland, California Camarillo, CA Malibu Research Associates
CPI Specialities High Power High Efficiency Broad Product Offering Consultative Engineering Services
Products Supplied Klystrons Gyrotrons Helix TWTs Coupled Cavity TWTs Ring Bar TWTs Power Grid Tubes Inductive Output Tubes Magnetrons Cross-Field Amplifiers X-Ray Generators Satellite Communications amplifiers Antennas
Helix X Band Products VTX6389G5 Typical Operating Parameters Frequency 8.15GHz Power Output CW2.5kW Efficiency59% Beam Voltage15kV Beam Current1A
VKL-8301 Multiple Beam Klystron Typical Operating Parameters Frequency 1.3GHz Peak Power Output 10MW Ave. Power Output150kW Power Asymmetry0.7% Efficiency59% Beam Voltage120kV Beam Current141A Microperveance3.4 RF Pulse Length1.5ms Saturated Gain 49dB Cathode loading2.2A/cm2 Used in European X-Ray FEL at DESY. Potential use in ILC. Horizontal version in progress with integrated X-ray shielding and cart currently in test.
VKX-7864B Klystron 250 kW CW in X-Band Typical Operating Parameters Power Output 250kW Beam Voltage 51kV Beam Current 11.05A Supply Power 564kW Efficiency44% Frequency 8.560GHz 1dB Bandwidth 60MHz Saturated Gain 45dB Cavities6 Cooling Methodliquid
VTX-5681 Coupled Cavity TWT 100 kW Pulsed in X-band Typical Operating Parameters Frequency 10 GHz Peak Power Output 100kW Duty35% Saturated Gain 49dB Bandwidth (-1 dB )1GHz Beam Voltage45kV Beam Current11A
VKX-7841 Klystron Typical Operating Parameters Frequency 9.5 GHz Peak Power Output 650 kW Ave. Power Output0.2 kW Saturated Gain 71 dB Bandwidth (-1 dB )45 MHz Efficiency28 % Beam Voltage8 kV Beam Current30 A Used in experimental accelerator research circa 1980, 5 were made. Very compact.
Recent Advancements Market drivers Requirements for higher efficiency Desire for lower beam voltages Need for smaller size CPI Response Sheet Beam Klystron PPM Focused Klystron
VKX-7993 Klystron 2.7 MW Pulsed Typical Operating Parameters Frequency 9.3GHz Peak Power2.7MW Peak Power (goal)5.5kW Saturated Gain 52 dB Bandwidth (-1 dB )65MHz Efficiency43% Beam Voltage120kV Beam Current52A Compact device, recently in production
VKX-8293A Sheet Beam Klystron Sheet Beam Technology Typical Operating Parameters Frequency 9.35GHz Peak Power Output 2.7MW Ave. Power Output0.3kW Saturated Gain 42dB Efficiency25% Beam Voltage76kV Beam Current144A
VKX-8293A Sheet Beam Klystron Beam transmission was 63% for above parameters. Best transmission was 94% at a much lower operating voltage. Cathode position will be adjusted to improve transmission.
Conclusions X band frequency range fertile Efficiency continues to improve, over 60% Size of products shrinking Modern design codes allow complex analysis of beam dynamics New RF structures possible Power outputs from hundreds of watts to tens of megawatts Attracting new engineers into vacuum device field