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We propose a differentiable vertex fitting algorithm that can be used for secondary vertex fitting, and that can be seamlessly integrated into neural networks for jet flavour tagging. Vertex fitting is formulated as an optimization problem…

High Energy Physics - Experiment · Physics 2023-10-20 Rachel E. C. Smith , Inês Ochoa , Rúben Inácio , Jonathan Shoemaker , Michael Kagan

We describe a novel experimental setup that combines the advantages of both laser-induced fluorescence and cavity ring-down techniques. The simultaneous and correlated measurement of the ring-down and fluorescence signals yields absolute…

Chemical Physics · Physics 2013-10-15 Scott E. Sanders , Oliver R. Willis , N. Hendrik Nahler , Eckart Wrede

Knowledge Distillation (KD) aims to transfer knowledge in a teacher-student framework, by providing the predictions of the teacher network to the student network in the training stage to help the student network generalize better. It can…

Computer Vision and Pattern Recognition · Computer Science 2019-09-25 SeongUk Park , Nojun Kwak

We employ neural networks for classification of data of the TUS fluorescence telescope, the world's first orbital detector of ultra-high energy cosmic rays. We focus on two particular types of signals in the TUS data: track-like flashes…

Instrumentation and Methods for Astrophysics · Physics 2021-07-05 Mikhail Zotov

Standard laser based fire detection systems are often based on measuring variation of optical signal amplitude. However, mechanical noise interference and loss from dust and steam can obscure the detection signal, resulting in faulty…

A LED flasher has been developed for TUNKA-133 EAS Cherenkov detector. A blue ultra bright InGaN LED is used as a light source in the flasher. The flasher's driver is based on a fast discharge of a small capacitor via a complementary pair…

Instrumentation and Detectors · Physics 2007-09-05 B. K. Lubsandorzhiev , R. V. Poleshuk , B. A. J. Shaibonov , Y. E. Vyatchin , A. Z. Zablotsky

In order to identify and prevent tea leaf diseases effectively, convolution neural network (CNN) was used to realize the image recognition of tea disease leaves. Firstly, image segmentation and data enhancement are used to preprocess the…

Computer Vision and Pattern Recognition · Computer Science 2019-01-10 Xiaoxiao Sun , Shaomin Mu , Yongyu Xu , Zhihao Cao , Tingting Su

A method is presented for the sensing of ions by determining the concentration of corresponding salts (KCl, NaCl, MgCl2, CaCl2, FeCl3, FeSO4, AlCl3) in water, based on Fluorescence resonance energy transfer (FRET) process. The principle of…

Materials Science · Physics 2014-08-29 Dibyendu Dey , Jaba Saha , D. Bhattacharjee , Syed Arshad Hussain

Identifying chemical compounds is essential in several areas of science and engineering. Laser-based techniques are promising for autonomous compound detection because the optical response of materials encodes enough electronic and…

Machine Learning · Computer Science 2023-03-17 Thulasi Bikku , Rubén A. Fritz , Yamil J. Colón , Felipe Herrera

The rapid advances in Deep Learning (DL) techniques have enabled rapid detection, localisation, and recognition of objects from images or videos. DL techniques are now being used in many applications related to agriculture and farming.…

Computer Vision and Pattern Recognition · Computer Science 2021-03-03 A S M Mahmudul Hasan , Ferdous Sohel , Dean Diepeveen , Hamid Laga , Michael G. K. Jones

There is currently no widely adopted standard for the optical characterisation of fluorescence microscopes. We used laser written fluorescence to generate two- and three-dimensional patterns to deliver a quick and quantitative measure of…

This communication reports the increase in fluorescence resonance energy transfer (FRET) efficiency between two laser dyes in presence of Deoxyribonucleic acid (DNA). Two types of molecular logic gates have been designed where DNA acts as…

Biological Physics · Physics 2014-08-29 D. Bhattacharjee , Dibyendu Dey , S. Chakraborty , Syed Arshad Hussain

The transition of materials and devices to nanometer, atomic, and quantum scales makes thermal characterization increasingly challenging, driving the need for advanced nanoscale thermometry. Fluorescence nanothermometry has emerged as a…

Odor identification is an important area in a wide range of industries like cosmetics, food, beverages and medical diagnosis among others. Odor detection could be done through an array of gas sensors conformed as an electronic nose where a…

Machine Learning · Computer Science 2019-05-06 Jose de Jesus Rubio , Ramon Silva Ortigoza , Francisco Jacob Avila , Adolfo Melendez , Juan Manuel Stein

As more than half of the Fluorescence Detector (FD) of the Auger Observatory is completed, data taking is becoming a routine job. It is then necessary to follow strict procedures to assure the quality of the data. An overview of the data…

A stable reference light source based on an LED (Light Emission Diode) is presented for stabilizing the conversion gain of the opto-electronic system of a gamma- and fast-neutron radiographic and tomographic imaging device. A constant…

Instrumentation and Detectors · Physics 2010-02-09 M. Weierganz , D. Bar , B. Bromberger , V. Dangendorf , G. Feldman , M. B. Goldberg , M. Lindemann , I. Mor , K. Tittelmeier , D. Vartsky

Detector calibration is very important for the long-term operation. For the purposes of simple and precise calibration, we developed a new portable calibration source using UVLED to calibrate the fluorescence detector of the Telescope Array…

Instrumentation and Detectors · Physics 2018-12-05 Sungrae Im , Bokkyun Shin , Ikeda Daisuke , Stan Thomas , ByungGu Cheon

In this work we present a modification to conventional X-rays fluorescence using electrons as excitation source, and compare it with the traditional X-ray excitation for the study of pigments. For this purpose we have constructed a…

Instrumentation and Detectors · Physics 2016-08-24 F. Valle Brozas , A. Crego , L. Roso , A. Peralta Conde

In this article we present a new diagnostic approach utilizing flow-cytometry to study compounds of nanoparticle samples in solution by analysis of their scattering patterns retrieved from the cytometric measurements. As a specific…

Fluorescence collection sets the efficiency of state detection and the rate of entanglement generation between remote trapped ion qubits. Despite efforts to improve light collection using various optical elements, solid angle capture is…

Quantum Physics · Physics 2013-02-19 Amira M. Eltony , Shannon X. Wang , Gleb M. Akselrod , Peter F. Herskind , Isaac L. Chuang
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