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Background: Clinical linear accelerators are an accessible platform for preclinical research on the biological effects of ultra rapid electron irradiation (FLASH). However, they are not inherently designed for the accurate pulse control…

Measuring human capabilities to synchronize in time, adapt to perturbations to timing sequences or reproduce time intervals often require experimental setups that allow recording response times with millisecond precision. Most setups…

Neurons and Cognition · Quantitative Biology 2021-07-20 Martin Miguel , Pablo Riera , Diego Fernandez Slezak

We demonstrate agreement between measurements and ab initio calculations of the frequency shifts caused by distributed cavity phase variations in the microwave cavity of a primary atomic fountain clock. Experimental verification of the…

Quantum Physics · Physics 2011-04-05 Jocelyne Guéna , Ruoxin Li , Kurt Gibble , Sébastien Bize , André Clairon

The Vlasov-Poisson system, modeling the evolution of non-collisional plasmas in the electrostatic limit, is approx- imated by a Semi-Lagrangian technique. Spectral methods of periodic type are implemented through a collocation approach.…

Numerical Analysis · Mathematics 2019-03-27 Lorella Fatone , Daniele Funaro , Gianmarco Manzini

We have developed a digital fast Fourier transform (FFT) spectrometer made of an analog-to-digital converter (ADC) and a field-programmable gate array (FPGA). The base instrument has independent ADC and FPGA modules, which allow us to…

Instrumentation and Methods for Astrophysics · Physics 2017-07-26 Kazumasa Iwai , Yûki Kubo , Hiromitsu Ishibashi , Takahiro Naoi , Kenichi Harada , Kenji Ema , Yoshinori Hayashi , Yuichi Chikahiro

High penetration of photovoltaic (PV) generators can lead to voltage issues in distribution networks. Various approaches including the real power control through PV inverters have been proposed to address voltage issues. However, among…

Optimization and Control · Mathematics 2018-04-20 Chang Fu , Caisheng Wang , Saeed Alyami

To tackle heterogeneous time-dependent problems, an algorithm that constructs problem-adapted basis functions in an embarrassingly parallel and local manner in time has recently been proposed in [Schleuss, Smetana, ter Maat, SIAM J. Sci.…

Numerical Analysis · Mathematics 2023-02-02 Julia Schleuß , Kathrin Smetana

We consider a grid-connected voltage source converter (VSC) and address the problem of estimating the grid angle and frequency, information that is essential for an appropriate operation of the converter. We design phase-locked loop (PLL)…

Systems and Control · Electrical Eng. & Systems 2022-07-19 Daniele Zonetti , Oriol Gomis-Bellmunt , Eduardo Prieto-Araujo , Marc Cheah-Mane

This work presents a novel reconfigurable architecture for Low Latency Graph Neural Network (LL-GNN) designs for particle detectors, delivering unprecedented low latency performance. Incorporating FPGA-based GNNs into particle detectors…

Hardware Architecture · Computer Science 2024-01-19 Zhiqiang Que , Hongxiang Fan , Marcus Loo , He Li , Michaela Blott , Maurizio Pierini , Alexander Tapper , Wayne Luk

Radio channels at mmWave and sub-THz frequencies for 5G and 6G communications offer large channel bandwidths (hundreds of MHz to several GHz) to achieve multi-Gbps data rates. Accurate modeling of the radio channel for these wide bandwidths…

Signal Processing · Electrical Eng. & Systems 2023-09-06 Dipankar Shakya , Hitesh Poddar , Theodore S. Rappaport

This paper presents the uTCA4.0-based BPM electronics for PIP-II, featuring four 250 MSPS ADCs and a Xilinx UltraScale+ MPSoC FPGA with 10 GbE uplink. Design elements include signal conditioning, clock, and thermal management. The FPGA…

Accelerator Physics · Physics 2025-09-22 Shengli Liu , Nathan Eddy , A. Semenov , Brian Fellenz

Amplified bursts of laser pulses are sought for various machining, deposition, spectroscopic and strong-field applications. Standard frequency- and time-domain techniques for pulse division become inadequate when intraburst repetition rates…

State-of-the-art digital circuit design tools almost exclusively rely on pure and inertial delay for timing simulations. While these provide reasonable estimations at very low execution time in the average case, their ability to cover…

Other Computer Science · Computer Science 2021-07-20 Jürgen Maier

A pulsar's pulse profile gets broadened at low frequencies due to dispersion along the line of sight or due to multi-path propagation. The dynamic nature of the interstellar medium makes both of these effects time-dependent and introduces…

In contrast to grid-following inverters, Virtual Synchronous Generators (VSGs) perform well under weak grid conditions but may become unstable when the grid is strong. Grid strength depends on grid impedance, which unfortunately varies over…

Systems and Control · Electrical Eng. & Systems 2025-07-08 Quang-Manh Hoang , Van Nam Nguyen , Taehyung Kim , Guilherme Vieira Hollweg , Wencong Su , Van-Hai Bui

Phase Frequency Detectors (PFDs) are essential components in Phase-Locked Loop (PLL) and Delay-Locked Loop (DLL) systems, responsible for comparing phase and frequency differences and generating up/down signals to regulate charge pumps…

Emerging Technologies · Computer Science 2025-08-26 Dhandeep Challagundla , Venkata Krishna Vamsi Sundarapu , Ignatius Bezzam , Riadul Islam

In this paper we address the question how the control of delayed measured chaotic systems can be improved. Both unmodified OGY control and difference control can be successfully applied only for a certain range of Lyapunov numbers depending…

chao-dyn · Physics 2007-05-23 Jens Christian Claussen , Heinz Georg Schuster

Novel non-volatile memory devices based on ferroelectric thin films represent a promising emerging technology that is ideally suited for neuromorphic applications. The physical switching mechanism in such films is the nucleation and growth…

Cutting edge FPGAs are not energy efficient as conventionally presumed to be, and therefore, aggressive power-saving techniques have become imperative. The clock rate of an FPGA-mapped design is set based on worst-case conditions to ensure…

Hardware Architecture · Computer Science 2019-11-19 Behnam Khaleghi , Sahand Salamat , Mohsen Imani , Tajana Rosing

The new vision presented is aimed to overcome the logic overhead issues that previous works exhibit when applying GALS techniques to programmable logic devices. The proposed new view relies in a 2-phase, bundled data parity based protocol…

Hardware Architecture · Computer Science 2008-02-26 Javier D. Garcia-Lasheras