A 2.5-MV Subnanosecond Pulser With Laser-Triggered Spark Gap for the Generation of High-Brightness Electron Bunches

Vyuga, D.A.; Волков, А. М.; Tomashevich, P. V.; Baranov, G. A.; Wiel, M.J. van der; Brussaard, G.

doi:10.1109/tps.2004.835479

Cited by 14 publications

(7 citation statements)

References 5 publications

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“…Using laser-triggered spark gap technology to switch MV voltages, it is possible to generate 1 ns long and 1 MV high pulses with 0.1 ns rise and fall time. As has been shown by several groups, including our own [14], such pulses can be applied across gaps as small as 1 mm without breakdown, for the simple reason that 1 ns is too short for a breakdown to occur. The acceleration structure presented in this paper is suited for guiding such voltage pulses.…”

Section: Bright Electron Sources and Their Applicationsmentioning

confidence: 80%

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Design and validation of an accelerator for an ultracold electron source

Taban

Reijnders

Bell

et al. 2008

Phys. Rev. ST Accel. Beams

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We describe here a specially designed accelerator structure and a pulsed power supply that are essential parts of a high brightness cold atoms-based electron source. The accelerator structure allows a magnetooptical atom trap to be operated inside of it, and also transmits subnanosecond electric field pulses. The power supply produces high voltage pulses up to 30 kV, with a rise time of up to 30 ns. The resulting electric field inside the structure is characterized with an electro-optic measurement and with an ion timeof-flight experiment. Simulations predict that 100 fC electron bunches, generated from trapped atoms inside the structure, reach an emittance of 0.04 mm mrad and a bunch length of 80 ps.

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Section: Bright Electron Sources and Their Applicationsmentioning

confidence: 80%

“…The proposed source works at a voltage of 1 MV switched on in 150 ps, which in principle can be produced with state-of-the-art technology [14]. The required laser-triggered sparkgap technology is however very cumbersome in use and needs further development before it can be applied in practice.…”

Section: Fast High Voltage Generationmentioning

confidence: 99%

Design and validation of an accelerator for an ultracold electron source

Taban

Reijnders

Bell

et al. 2008

Phys. Rev. ST Accel. Beams

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“…[1][2][3] So HVPT is widely used as a charging device of the PFL of the intense electronbeam accelerators ͑IEBAs͒ in the field of pulsed power technology, 4-8 especially the Tesla transformer or air core transformer. 12 For spiral strip-type HVPT, it is usually constructed by winding a thin sheet of conducting material ͑thin copper foil͒ onto a dielectric form with film-type dielectric insulation between windings. The first is the spiral strip type, 4 the second is the single-layer helical wire transformer.…”

Section: Introductionmentioning

confidence: 99%

Effect of the change in the load resistance on the high voltage pulse transformer of the intense electron-beam accelerators

Cheng

Liu

Qian

2009

Review of Scientific Instruments

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A high voltage pulse transformer (HVPT) is usually used as a charging device for the pulse forming line (PFL) of intense electron-beam accelerators (IEBAs). Insulation of the HVPT is one of the important factors that restrict the development of the HVPT. Until now, considerable effort has been focused on minimizing high field regions to avoid insulation breakdown between windings. Characteristics of the HVPT have been widely discussed to achieve these goals, but the effects of the PFL and load resistance on HVPT are usually neglected. In this paper, a HVPT is used as a charging device for the PFL of an IEBA and the effect of the change in the load resistance on the HVPT of the IEBA is presented. When the load resistance does not match the wave impedance of the PFL, a high-frequency bipolar oscillating voltage will occur, and the amplitude of the oscillating voltage will increase with the decrease in the load resistance. The load resistance approximates to zero and the amplitude of the oscillating voltage is much higher. This makes it easier for surface flashover along the insulation materials to form and decrease the lifetime of the HVPT.

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“…Tesla coils, which are typically operated in pulsed mode, have strong coupling with pulse widths varying from some nanoseconds up to several hundreds of microseconds according to the particular application. Due to their capabilities, Tesla Transformers have found various applications such as in high voltage Subnanosecond Pulsers [1], aging of insulators and high frequency solid insulation testing [2]. The prominent effect of coupling on the performance of Tesla coils necessitates the investigation of mutual inductance (M ) calculation methods.…”

Section: Introductionmentioning

confidence: 99%