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The results presented here were obtained with an SMP diode mounted at the front high voltage end of the RITS accelerator. RITS is a Self-Magnetically Insulated Transmission Line (MITL) voltage adder that adds the voltage pulses of six 1.3 MV inductively insulated cavities.
The self-magnetic pinch (SMP) diode is an intense radiographic source fielded on the Radiographic Integrated Test Stand (RITS-6) accelerator at Sandia National Laboratories in Albuquerque, NM. The accelerator is an inductive voltage adder (IVA) that can operate from 2–10 MV with currents up to 160 kA (at 7 MV). The SMP diode produces spot sizes as small as 1 mm FWHM depending on the diode configuration...
The self-magnetic-pinch (SMP) diode1,2 is being developed as a source for flash x-ray radiography. The high electric field stresses applied to this diode and material heating from the intense electron beam generate electrode plasmas. While these plasmas are instrumental in beam formation and focusing, rapid plasma expansion from the electrodes can degrade radiographic performance.
Linear transformer driver (LTD)1 accelerator designs have been proposed and constructed for a number of pulsed power experiments. The accelerators are typically optimized for one type of load with a specific load impedance profile. A design will be presented of an LTD accelerator capable of generating −3.5-MV pulses for Self-Magnetic Pinch (SMP) diode experiments, and +2.5-MV pulses for Rod-pinch...
RITS-6 is an inductive voltage adder (IVA) based accelerator used for radiographic diode research and development1. Experiments have been conducted with various radiographic diodes with diode voltages of 5–11 MV. A recent experiment was conducted to demonstrate that a negative polarity IVA could operate in positive polarity, at reduced voltage, with minimal reconfiguration and maintenance. Circuit...
The linear transformer driver (LTD) is a promising technology for building a compact, high-voltage driver for radiographic applications. The 21 cavity Ursa Minor LTD at Sandia National Laboratories is designed to deliver an output voltage of 2.5 MV. This system provides the first opportunity to evaluate the effects of substantial electron flow in a many-cavity driver at the low end of the voltage...
Large-scale pulsed-power x-ray source systems are expensive collaborations; as such, long-term efficiency is often an important issue for organizations. While those systems used in an R&D setting are regularly modified and breakdown during testing is anticipated, other systems set into a user facility environment are expected to perform more flawlessly over the long term. It is the latter type...
The self-magnetic pinch (SMP) diode1 is an intense flash x-ray radiographic source being developed at Sandia National Laboratories. The diode is capable of less than 3 mm spots and greater than 300 rads measured at 1 meter depending on the diode voltage. The diode is most commonly fielded on the Radiographic Integrated Test Stand (RITS-6), a 7.5 M V, 185 kA inductive voltage adder (IVA) accelerator...
Summary form only given. The radiographic linear transformer driver (LTDR) was built as a 1-MV test stand to demonstrate component reliability and the ability to couple LTD cavities to a magnetically insulated transmission line (MITL) and a electron beam diode. The original system consists of seven series cavities and was designed to generate a 100-ns FWHM voltage pulse with peak voltage of 0.8-1...
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