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Thyratrons in high-power, short-pulse accelerators have a limited lifetime, making it desirable to replace the thyratrons with solid-state devices. One possibility, thyristors, are being developed for this application; they have not, to date, demonstrated the reliability needed for installation in the short pulse, high peak power RF stations used in many pulsed electron accelerators. An alternate...
Diversified Technologies, Inc. (DTI), in partnership with SigmaPhi Electronics (SPE), has built three long pulse solid-state klystron transmitters to meet European Spallation Source (ESS) requirements. The prototype system was built under a DOE SBIR effort, and the first production modulators were built for, and installed at, CEA Saclay, Franc, and the National Institute of Nuclear and Particle Physics...
Under a U.S. Department of Energy grant, Diversified Technologies, Inc. (DTI) has developed a short pulse, solid-state Marx modulator. The modulator is designed for high efficiency in the 100 kV to 500 kV range, for currents up to 250 A, pulse lengths of 0.2 to 5.0 µs, and risetimes <300 ns. Key objectives of the development effort are modularity and scalability, combined with low cost and ease...
Diversified Technologies, Inc. (DTI) is building three long pulse solid-state klystron transmitters to meet spallation source requirements. Two of the three will be installed at CEA Saclay and the National Institute of Nuclear and Particle Physics (IN2P3) in 2015, to be used as test stands for the European Spallation Source (ESS), The third system will be installed at Oak Ridge National Laboratory...
The ISIS Linear Accelerator at Rutherford Appleton Laboratory (RAL) has provided acceleration of H− ions since 1984. ISIS has recently replaced the first pair of legacy, low power cathode modulators used on its 2 MW RF triodes with high power, solid-state anode modulators. The key to these new modulators is a series IGBT high voltage switch, rated at up to 40 kV, 300A, built by Diversified Technologies,...
Under a U.S. Department of Energy grant, Diversified Technologies, Inc. (DTI) is developing a short pulse, solidstate Marx modulator for the next generation of klystrons and accelerators. For short-pulse modulators, this Marx topology provides a means to achieve astounding risetimes and flattop control that are simply not available with hard switch or transformer coupled topologies.
Next generation fusion facilities will require many megawatts of RF power from dozens of gyrotrons. Each gyrotron requires a power system that must deliver the high-voltage power, modulate cathode voltage, and protect these expensive gyrotrons from arcing damage. It must be highly efficient, to minimize both the power and cooling costs associated with operation and to ensure high facility availability.
The ISIS Linear Accelerator at Rutherford Appleton Laboratory (RAL) has provided acceleration of H− ions since 1984. ISIS has recently replaced the first pair of legacy, low power cathode modulators used on its 2 MW RF triodes with high power, solid-state anode modulators. The key to these new modulators is a series IGBT high voltage switch, rated at up to 40 kV, 300A, built by Diversified Technologies,...
Diversified Technologies, Inc. (DTI), under an SBIR grant from the U.S. Department of Energy, assembled a prototype pulse generator capable of meeting the original specifications for the Next Generation Light Source (NGLS) fast deflector. The ultimate NGLS kicker driver must drive a 50 Ω load (a 50 Ω terminated Transverse Electromagnetic (TEM) deflector blade) at 10 kV, with flat-topped pulses according...
Diversified Technologies Inc. (DTI) is developing a long-pulse modulator which meets the requirements of the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory and the European Spallation Source (ESS). The modulators will deliver pulses at up to 100 kV and 50 A with a pulse width of 3.5 ms and a droop much less than 1%. The modulator will be delivered to SNS for conditioning klystron...
Diversified Technologies, Inc. (DTI) has bench-tested a table-top scale “Buck Matrix” modulator with an efficiency of ∼96% which uses a single set of IGBT switches for voltage regulation, arc protection, and pulse modulation.
Diversified Technologies, Inc. (DTI) has developed a connector which reliably transfers power and data to submersibles while under water. Rather than making incremental improvements to the electromechanical design of existing direct contact connectors, DTI has developed a non-contact connector which transmits power and data by inductive and capacitive coupling. The key innovation of this breakthrough...
Diversified Technologies Inc. (DTI) developed a SolidState Marx Modulator under an SBIR program funded by the Department of Energy. The modulator was designed to be a cost effective power source for multi-beam klystrons. The modulator was delivered to the Stanford Linear Accelerator Center (SLAC) and will be used as a test platform for ILC class klystrons.
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