scholarly journals Repetition Rate of Partial Discharges in Low Voltage Cables

2019 ◽  
Vol 64 (1) ◽  
pp. 33-39
Author(s):  
Richárd Cselkó
Keyword(s):  
Repetition Rate ◽  
Low Voltage ◽  
Partial Discharge ◽  
Diagnostic Testing ◽  
High Repetition Rate ◽  
Partial Discharges ◽  
Propagation Path ◽  
High Repetition ◽  
Test Voltage ◽  
The Individual

Diagnostic testing of low voltage cables by partial discharge measurement has several difficulties. One of them is that the cables are not designed to be partial discharge free at their test voltage. As partial discharge impulses may originate from numerous spots even in new cables, it is expected that impulses reach the termination with high repetition rate. The propagation of impulses in low voltage cables differs from the medium and high voltage cables; there is no lossy semiconducting layer or layers, but the cross section of the conductors are lower. The measurement method of partial discharges has to be adjusted to the discharge type and the propagation path as these determine the frequency content of the individual impulses, and the time resolution of the system has to be appropriate for the expected repetition rate. Measurements have been performed on various types of cables by different methods. Based on the results suggestions are given on the suitable measurement methods.

Low voltage, high repetition rate electro-optic Q-switch

2005 ◽  
Author(s):  
Y.K. Zou ◽  
Qiuyshui Chen ◽  
Run Zhang ◽  
K.K. Li ◽  
Hua Jiang
Keyword(s):  
Repetition Rate ◽  
Low Voltage ◽  
High Repetition Rate ◽  
High Repetition ◽  
Electro Optic

Low-Voltage Thyristor Heterostructure for High-Current Pulse Generation at High Repetition Rate

2021 ◽  
pp. 1-6
Author(s):  
Sergey O. Slipchenko ◽  
Aleksandr A. Podoskin ◽  
Olga S. Soboleva ◽  
Vyacheslav S. Golovin ◽  
Dmitriy N. Romanovich ◽  
...  
Keyword(s):  
Current Pulse ◽  
Repetition Rate ◽  
Low Voltage ◽  
High Repetition Rate ◽  
Pulse Generation ◽  
High Current ◽  
High Repetition

ANTICROSSING IN PROPYNAL EXCITED BY A NEAR U.V. HIGH REPETITION RATE COPPER VAPOR LASER PUMPED DYE LASER

1987 ◽  
Vol 48 (C7) ◽  
pp. C7-659-C7-661
Author(s):  
J. P. PIQUE ◽  
M. LOMBARDI ◽  
U. BRÜHLMANN ◽  
H. R. HUBER
Keyword(s):  
Repetition Rate ◽  
High Repetition Rate ◽  
Dye Laser ◽  
Copper Vapor Laser ◽  
Vapor Laser ◽  
High Repetition ◽  
Copper Vapor

Production of Nanoparticles with High Repetition Rate Picosecond Laser

2007 ◽  
Vol 2 (3) ◽  
pp. 230-233 ◽  
Author(s):  
Marijus Brikas
Keyword(s):  
Repetition Rate ◽  
Picosecond Laser ◽  
High Repetition Rate ◽  
High Repetition

Ti3C2Tx nanosheets for high-repetition-rate wideband-tunable Q-switched fiber laser around 3 μm

2021 ◽  
pp. 1-1
Author(s):  
Liqiang Zhou ◽  
Chen Wei ◽  
Dongsheng Wang ◽  
Hao Chi ◽  
Le Zheng ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Repetition Rate ◽  
High Repetition Rate ◽  
High Repetition

scholarly journals High-repetition-rate, sub-nanosecond and narrow-bandwidth fiber-laser-pumped green laser for photon-counting shallow-water bathymetric Lidar

2020 ◽  
Vol 19 ◽  
pp. 103563
Author(s):  
Xin Chen ◽  
Wei Kong ◽  
Tao Chen ◽  
Hao Liu ◽  
Genghua Huang ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Shallow Water ◽  
Repetition Rate ◽  
Photon Counting ◽  
Green Laser ◽  
High Repetition Rate ◽  
High Repetition ◽  
Narrow Bandwidth

scholarly journals Advanced Scheme to Generate MHz, Fully Coherent FEL Pulses at nm Wavelength

2021 ◽  
Vol 11 (13) ◽  
pp. 6058
Author(s):  
Georgia Paraskaki ◽  
Sven Ackermann ◽  
Bart Faatz ◽  
Gianluca Geloni ◽  
Tino Lang ◽  
...  
Keyword(s):  
Repetition Rate ◽  
High Harmonic ◽  
High Repetition Rate ◽  
Optical Cavities ◽  
Electron Bunches ◽  
High Repetition ◽  
Average Brightness ◽  
Technical Requirements ◽  
Harmonic Content ◽  
Unique Approach

Current FEL development efforts aim at improving the control of coherence at high repetition rate while keeping the wavelength tunability. Seeding schemes, like HGHG and EEHG, allow for the generation of fully coherent FEL pulses, but the powerful external seed laser required limits the repetition rate that can be achieved. In turn, this impacts the average brightness and the amount of statistics that experiments can do. In order to solve this issue, here we take a unique approach and discuss the use of one or more optical cavities to seed the electron bunches accelerated in a superconducting linac to modulate their energy. Like standard seeding schemes, the cavity is followed by a dispersive section, which manipulates the longitudinal phase space of the electron bunches, inducing longitudinal density modulations with high harmonic content that undergo the FEL process in an amplifier placed downstream. We will discuss technical requirements for implementing these setups and their operation range based on numerical simulations.

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