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Ken Rust - IEEE Xplore Author Profile

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Communications and Power Industries, Inc (CPI) produced 81 klystrons for the Spallation Neutron Source at Oak Ridge National Laboratory. The klystrons are rated for 550 kW peak at 805 MHz. seventy units have accumulated 1,284,647 hours of filament operation and 820,429 hours of high voltage operation to date. A higher power 700 kW version has been developed and is now in production.Show More
The spallation neutron source (SNS) has recently completed the commissioning of its 1.0 GeV proton storage ring, which included the ring extraction kicker system. This extraction system is comprised of fourteen high-voltage Blumlein-configured pulse-forming networks switched by fourteen thyratrons. The system also includes fourteen Blumlein control racks, which provide a high-voltage source, monit...Show More
This paper describes the types and quantities of dc and pulsed magnet power supplies required for the Spallation Neutron Source (SNS) Linear Accelerator: High-Energy Beam Transport (HEBT), Ring and the Ring-to-Target Beam Transfer (RTBT). There are over 600 magnets and more than 550 magnet power supplies. These magnet power supplies range in size from the bipolar corrector supplies rated at 35 vol...Show More
The spallation neutron source (SNS) is a next-generation high-intensity beam facility. The extraction kicker system is a high peak power, high average power, high-precision pulse-waveform, low beam impedance, and high repetition rate pulsed power system. It has been successfully designed and developed at Brookhaven National Laboratory, Upton, NY. The system consists of fourteen extraction magnet s...Show More
The SNS accumulator ring extraction fast-kicker system was design, developed, and prototype tested at the Brookhaven National Laboratory. Its construction has just begun. The system is for one-turn fast extraction ejecting proton beam from the ring into the extraction septum gap and further deflecting into the ring-to-target beam transport line. The system consists of fourteen high-voltage modulat...Show More
This paper describes simulation and experimental results for a 1400 A, /spl plusmn/900 V peak rated, switch mode power supply for SNS Injection Kicker Magnets. For each magnet (13 m/spl Omega/, 160 /spl mu/H), the power supply must supply controlled pulses at 60 Hz repetition rate. The pulse current must rise from zero to maximum in less than 1 millisec in a controlled manner, flat top for up to 2...Show More
The SNS extraction fast kicker system is a very high power, high repetition rate pulsed power system. It was design and developed at Brookhaven national laboratory. This system will consist of fourteen identical high voltage, high current modulators, and their auxiliary control and charging systems. The modulators will drive fourteen extraction magnet sections located inside of the SNS accumulator...Show More
In Proton Radiography, one of the goals is a motion picture of a rapidly moving object. The Los Alamos Proton Storage Ring (PSR) in its normal operating mode, delivers a single pulse approximately 120 ns wide (fwhm). In development runs at the PSR, we successfully demonstrated operation of a technique to deliver two pulses, each 40 nsec wide, with adjustable spacing.Show More
This paper discusses the pulse power and explosive emission electron beam diode development effort we have undertaken to power a relativistic klystron amplifier (RKA) microwave source. The pulsed power and electron beam must enable the RKA to produce one kilojoule of 1.3 GHz radiation per pulse at a 5 Hz repetition frequency. These efforts include tests and improvements of a 1 μs pulse length thyr...Show More
A research effort is underway with the goal of obtaining an energy of one kilojoule per pulse, with a 5 Hz pulse repetition frequency, from a high current relativistic klystron amplifier (RKA). The pulse length is one microsecond (1 GW peak power) with a microwave frequency of 1.3 GHz. This paper focuses on three areas: the theory, modeling, and experimental development of the microwave tube; the ...Show More
The design of magnetic pulse sharpening circuits for thyratron switching applications is presented. It is useful to add a saturating magnetic switch in series with the tube. Addition of the magnetic device reduces anode dissipation, hence reducing thyratron cooling requirements. The saturating magnetic switch allows the anode voltage to collapse while delaying the forward current, thus reducing th...Show More
Recent developments in dispenser cathode thyratrons have shifted the dominant life-limiting factor to the anode in high di/dt short-pulse circuits. Calculations and measurements indicate that the addition of a magnetic switch should reduce the anode temperature and the erosion rate. The addition of a saturating magnetic switch has several advantages. First, by reducing the amount of anode dissipat...Show More
The design of a 1 MV, repetition-rated modulator capable of switching 20 kJ into an 80 Omega load is presented. The design utilizes two recently developed 100 kV hollow-anode thyratrons to discharge four parallel lumped-constant Blumleins composed of two 1.0-2.0 Omega , 6-stage, type E pulse-forming networks (PFNs). The Blumleins are to be command-resonantly charged from a capacitive energy storag...Show More