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PPPS 2019

22–28 Jun 2019
DoubleTree at the Entrance to Universal Orlando
America/New_York timezone

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Session

5.1 & 5.2 Opening and Closing Switches I

O9D
24 Jun 2019, 09:45
DoubleTree at the Entrance to Universal Orlando

DoubleTree at the Entrance to Universal Orlando

5780 Major Blvd. Orlando, Florida, 32819, USA

Conveners

5.1 & 5.2 Opening and Closing Switches I

  • Ryan Umstattd

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  1. 935. Increasing the Pulse Repetition Rate for Solid State Thyratron Replacements
    John Waldron (Silicon Power)
    24/06/2019, 09:45
    5.1 Closing Switches (incl. on-only solid state - thyristors)
    Oral

    Silicon Power reports increased pulse repetition rate capability for Solid State Thyratron Replacements (SSTR) utilizing enhanced SolidTRON technology. Varying amounts of minority carrier lifetime killing in our semiconductors has enabled demonstration of 300ns wide capacitive discharge pulses up to 10kA/cm2 at pulse repetition rates up to 50kHz at a junction temperature of 110°C.

    While...

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  2. 834. Study on aging characteristics of DC transmission line arrester considering impact load
    Mengzhen Li (Xi'an Jiaotong University)
    24/06/2019, 10:00
    5.4 Transmission Line & Transformers
    Oral

    Metal oxide arrester (MOA) is the main equipment to limit overvoltage in power system. It has been widely used in UHVDC project in China. The UHVDC system has longer deliver distance. Under the influence of various external factors, the state characteristic parameters of MOA will change and its performance will decline, which is called the aging problem. Unlike the arrester in AC system whose...

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  3. 738. High sensitivity HEH monitor
    Dr Viliam Senaj (CERN)
    24/06/2019, 10:15
    5.1 Closing Switches (incl. on-only solid state - thyristors)
    Oral

    The LHC beam dumping system serves to safely abort 2 counter rotating proton beams each with energy of up to 360 MJ and its reliable operation is crucial for the accelerator safety. The system comprises 50 fast pulsed magnets and their associated pulse generators to fast extract and paint both beams on the surface of two 8 m long graphite blocks. The pulse generators operate at up to 29 kV and...

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  4. 532. Packaging and Evaluation of 100 kV Photoconductive Switches
    Mr Jared Culpepper (Texas Tech University)
    24/06/2019, 10:30
    5.1 Closing Switches (incl. on-only solid state - thyristors)
    Oral

    In practice, it is challenging to integrate a Photoconductive Semiconductor Switch (PCSS) capable of switching on the order of 100 kV into a package with small parasitic inductance such that the sub-nanosecond rise time of the PCSS is still achievable at current amplitudes of hundreds of amperes. The lateral geometry PCSS is built on a 2.5 cm x 1.3 cm GaAs sample with a gap distance of 2 cm to...

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  5. 607. Experimental study of graphite electrode erosion under premixed atmosphere in spark gap switch
    Mr Hongyu Dai (Huazhong University of Science and Technology)
    24/06/2019, 11:00
    5.1 Closing Switches (incl. on-only solid state - thyristors)
    Oral

    The spark gap switch with graphite electrodes is widely used in the high-power laser system. Affected by the heat flux of the high-current arc, the graphite will sublimate in a short time. The sublimation characteristic determines the lifetime of the graphite electrode. To study the effects of gas composition on the erosion rate, three kinds of mixture gas are chosen to work as the discharge...

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