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2 Report Documentation Page Form Approved OMB No Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington VA Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. 1. REPORT DATE 01 MAR REPORT TYPE N/A 3. DATES COVERED - 4. TITLE AND SUBTITLE The High Power Microwave Facility: Orion 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) 5d. PROJECT NUMBER 5e. TASK NUMBER 5f. WORK UNIT NUMBER 7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) QinetiQ Malvern Technology Centre St. Andrews Road, Great Malvern Worcestershire, WR14 3PS U.K. 8. PERFORMING ORGANIZATION REPORT NUMBER 9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSOR/MONITOR S ACRONYM(S) 12. DISTRIBUTION/AVAILABILITY STATEMENT Approved for public release, distribution unlimited 13. SUPPLEMENTARY NOTES See also ADM , The original document contains color images. 14. ABSTRACT 15. SUBJECT TERMS 11. SPONSOR/MONITOR S REPORT NUMBER(S) 16. SECURITY CLASSIFICATION OF: 17. LIMITATION OF ABSTRACT UU a. REPORT unclassified b. ABSTRACT unclassified c. THIS PAGE unclassified 18. NUMBER OF PAGES 31 19a. NAME OF RESPONSIBLE PERSON Standard Form 298 (Rev. 8-98) Prescribed by ANSI Std Z39-18

3 The Orion High Power Microwave Facility & Operational Test Sources Brian A Kerr A presentation to: Tactical Implications of High Power Microwaves - SCI-119 Workshop Date : 12:06:2002 QinetiQ Ltd 2002 Cody Technology Park, Farnborough, Hampshire, GU14 0LX

4 Presentation Overview Orion HPM Source Cathode Research 3 Other RF Sources: Operational Test Sources Microwave Pulse Compressor CW / Pulse Magnetron Marine Radar UWB Sources Crazy Horse 16 Element Array

5 Orion HPM System

6 Introduction: HPM Research Facility 5 Orion was designed and constructed by PI in the USA to a UK specification Extremely versatile HPM source Valuable research system Source Development Cathode Research

7 High Power Microwave Facility: Orion 6 t = t =

8 HPM Source Specifications Frequency Tuneable across the range 1.07GHz to 3.00GHz 7 Electrical Pulse Duration Variable from 50ns to 500ns in 50ns steps Power 350MW peak across the entire frequency range Max peak power +1GW Repetition Rate Variable single shot to 100Hz

9 Schematic of Orion System 8 Control Systems Prime Power Pulsed Power Magnetron Combiner/ Attenuator Antenna Diagnostic Systems

10 Orion Modulator 9 t = t =

11 Relativistic Magnetron 10 t = t =

12 Orion Source 11 t = t =

13 Waveguide Combiner / Attenuator 12 t = t =

14 Antenna System 13 t = t =

15 Control and Diagnostic Systems 14 t = t =

16 Radiated Pulses 15 Short-Time Fourier Transform Frequency Spectrum 1.8e e e e+09 Frequency 1.4e e e e+09 1e+09 9e+08 8e+08-1e e e e e-06 4e-06 Time

17 HPM Radiated Pulses Frequency Spectrum Fourier Frequency Spectrum e e e e db 130 db e e e e e+09 Frequency

18 Cathode Research

19 Cathode Research (St. Andrews University) Orion Cathodes Research Cathodes 18

20 Cathode Research (St. Andrews University) 19 POWER, MW DISK with caps POWER vs PULSE LENGTH ARM 1 Frequency=1.3 GHz, Charging Voltage30kV VELVET with caps VELVET without caps VELVET with end-hats VELVET without end-hats FABRIC without end-hats DISK with end-hats PIN P/Pmax combined data pin, velvet and disc cathodes no caps caps FABRIC without caps PIN magnet current, A Peak power doubled PULSE LENGTH, ns

21 Other RF Sources

22 Other RF sources Other methods of producing high power microwaves are being investigated. 21 Systems that are part of the UK HPM capability are: RF Pulse Compressor CW / Pulse Magnetron Marine Radar

23 GHz, 200 MW Microwave Pulse Compressor

24 Microwave Sources 23 Marine Radar Pulsed Magnetron

25 Ultrawideband The UK has a range of Ultrawideband sources 24 These include: Crazy Horse UWB Array 16-Element UWB Array

26 Crazy Horse UWB Source & Antenna Array 25

27 Ultrawideband 16 Element Array 26

28 Summary

29 28 Summary Versatile HPM & UWB sources: Power Frequency PRF Orion Source is available for joint collaborative research programmes or hire

30 Acknowledgment 29 Orion is a UK Ministry of Defence (MoD) facility which is operated by QinetiQ with funds provided from the MoD Corporate Research Programme (CRP)

31 UNCLASSIFIED/UNLIMITED The High Power Microwave Facility: Orion Brian A. Kerr / Stephen N. Spark / Mark I. Harbour / Steve C. Douglas QinetiQ Malvern Technology Centre St. Andrews Road, Great Malvern Worcestershire, WR14 3PS U.K. The Orion high power microwave facility was designed and constructed by Physics International (PI), San Leandro, California, USA, to a design specification which arose within the UK. This presentation will provide an overview of the HPM system capabilities. Orion is capable of generating HPM radiation across a continuous tuneable bandwidth of 1.07GHz to 3.00GHz. This is achieved via four tuneable magnetrons each capable of operating over a 30% bandwidth via a proprietary tuning technique developed by PI. To meet the requirements of the UK specification, Orion is capable of generating typically +300MW of RF power over the entire operating band. With a magnetron efficiency between 10% to 20%, the pulsed power system has been designed to deliver 5GW of electrical power into the 50 ohm magnetron load. The operational principles of the HPM system will be described, highlighting the versatility of the source in four key areas; frequency of operation, output power, pulse duration and pulse repetition frequency. The key characteristics of the source are listed in table 1. Table 1: Specification of the Orion HPM system Parameter Operating Frequency Modulator Peak Power Peak Voltage Impedance Electrical Pulse Duration Pulse Repetition Rate Burst Duration Inter Burst Delay Prime Power Specification Tuneable from 1.07GHz through to 3.00GHz 5GW 500kV (Magnetron) 50 ohms 50 to 500ns in 50ns Steps (Modulator) Single Shot to 100Hz 10 seconds (Maximum) 8 minutes (Minimum) 500kW Average ACKNOWLEDGEMENTS Orion is a UK Ministry of Defence (MoD) facility, operated by QinetiQ with funds provided from the MoD Corporate Research Programme (CRP). Crown copyright Kerr, B.A.; Spark, S.N.; Harbour, M.I.; Douglas, S.C. (2002) The High Power Microwave Facility: Orion. In Tactical Implications of High Power Microwaves (pp ). Meeting Proceedings RTO-MP-SCI-119, Paper 26. Neuilly-sur-Seine, France: RTO. Available from: RTO-MP-SCI UNCLASSIFIED/UNLIMITED

32 UNCLASSIFIED/UNLIMITED The High Power Microwave Facility: Orion SYMPOSIA DISCUSSION PAPER NO: 26 Discusser s Name: Unknown Question: Magnetrons tuned? Cam freqs be changed? Author s Name: Kerr Author s Response: Tunable, but Discusser s Name: Römer Question: Pulse duration 500 ns? Author s Name: Kerr Author s Response: If narrow, 30 ns 300 ns RTO-MP-SCI-119 UNCLASSIFIED/UNLIMITED

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