JUNO Conceptual Design Report

The Jiangmen Underground Neutrino Observatory (JUNO) is proposed to determine the neutrino mass hierarchy using an underground liquid scintillator detector. It is located 53 km away from both Yangjiang and Taishan Nuclear Power Plants in Guangdong, China. The experimental hall, spanning more than 50 meters, is under a granite mountain of over 700 m overburden. Within six years of running, the detection of reactor antineutrinos can resolve the neutrino mass hierarchy at a confidence level of 3-4$\sigma$, and determine neutrino oscillation parameters $\sin^2\theta_{12}$, $\Delta m^2_{21}$, and $|\Delta m^2_{ee}|$ to an accuracy of better than 1%. The JUNO detector can be also used to study terrestrial and extra-terrestrial neutrinos and new physics beyond the Standard Model. The central detector contains 20,000 tons liquid scintillator with an acrylic sphere of 35 m in diameter. $\sim$17,000 508-mm diameter PMTs with high quantum efficiency provide $\sim$75% optical coverage. The current choice of the liquid scintillator is: linear alkyl benzene (LAB) as the solvent, plus PPO as the scintillation fluor and a wavelength-shifter (Bis-MSB). The number of detected photoelectrons per MeV is larger than 1,100 and the energy resolution is expected to be 3% at 1 MeV. The calibration system is designed to deploy multiple sources to cover the entire energy range of reactor antineutrinos, and to achieve a full-volume position coverage inside the detector. The veto system is used for muon detection, muon induced background study and reduction. It consists of a Water Cherenkov detector and a Top Tracker system. The readout system, the detector control system and the offline system insure efficient and stable data acquisition and processing.Comment: 328 pages, 211 figure

Monitoring the Integrity of CO2 Storage Sites Using Smart Field Technology

Capability of underground carbon dioxide storage to confine and sustain injected CO2 for a very long time is the main concern for geologic CO2 sequestration. If a leakage from a geological sink occurs, it is crucial to find the approximate amount and location of the leak in order to implement proper remediation activity.;An overwhelming majority of research and development for storage site monitoring has been concentrated on atmospheric, surface or near surface monitoring of the sequestered CO2. This study is different it aims to monitor the integrity of CO2 storage at the reservoir level. This work proposes developing in-situ CO2 Monitoring and Verification technology based on the implementation of Permanent Down-hole Gauges (PDG) or Smart Wells along with Artificial Intelligence and Data Mining (AI&DM). The technology attempts to identify the characteristic of the CO2 leakage by de-convolving the pressure signals collected at the Smart Well sites.;Citronelle field, a saline reservoir located in Mobile County (Alabama, US) was considered for this study. A reservoir simulation model for CO 2 sequestration in the Citronelle field was developed and history matched. The presence of the PDGs were considered in the reservoir model at the injection well and an observation well. High frequency pressure data from sensors were collected based on different synthetic CO2 leakage scenarios in the model. Due to complexity of the pressure signal behaviors, a Machine Learning based technique was introduced to build an Intelligent Leakage Detection System (ILDS).;The ILDS was able to detect leakage characteristics in a short time (less than a day) demonstrating high precision in quantifying leakage characteristics subject to complex rate behaviors. The performance of ILDS was examined under different conditions such as multiple well leakages, cap rock leakage, availability of an additional monitoring well, presence of pressure drift and noise in sensor and uncertainty in the reservoir model

Modelling, Simulation and Data Analysis in Acoustical Problems

Modelling and simulation in acoustics is currently gaining importance. In fact, with the development and improvement of innovative computational techniques and with the growing need for predictive models, an impressive boost has been observed in several research and application areas, such as noise control, indoor acoustics, and industrial applications. This led us to the proposal of a special issue about “Modelling, Simulation and Data Analysis in Acoustical Problems”, as we believe in the importance of these topics in modern acoustics’ studies. In total, 81 papers were submitted and 33 of them were published, with an acceptance rate of 37.5%. According to the number of papers submitted, it can be affirmed that this is a trending topic in the scientific and academic community and this special issue will try to provide a future reference for the research that will be developed in coming years

Análisis e interpretación física del efecto de las irregularidades de plasma ionosférico en el posicionamiento

Tesis inédita de la Universidad Complutense de Madrid, Facultad de Ciencias Físicas, Departamento de Física de la Tierra, Astronomía y Astrofísica I (Geofísica y Meteorología) (Astronomía y Geodesia), leída el 27/06/2016The ionosphere is one of the largest sources of error in the GNSS (Global Navigation Satellite System) positioning not only because the ionospheric refraction can induce errors of several meters in the satellite-receiver signals ranges but also due to the frequent occurrence of plasma density irregularities that lead to signal degradation when crosses them. The effect of the ionospheric irregularities on GNSS signals can be quantified by estimating the TEC (Total Electron Content) from dual frequency GNSS observations. At mid-latitudes it is expected that TEC values vary smoothly in the quiet periods whereas large electron density irregularities occurrence will be related to magnetic storms and other Space Weather phenomena. On the other hand, the physical characteristics of the ionosphere at low magnetic latitudes induce, among other phenomena, the appearance of a peculiar kind of irregularities known as equatorial plasma bubbles (EPBs) which are characterized by TEC depletions. The difference in the physics of the ionosphere at low-latitudes and mid-latitudes marks one of the fundamental guidelines of this Doctoral Thesis and the ROT (Rate of change of TEC) parameter is introduced to evaluate the changes in the electron content over time. In the case of positioning performed using dual-frequency receivers, the error introduced by the ionosphere can, in first approximation, be eliminated by the correction known as "ionospheric-free combination" (iono-free). However, significant errors in the height estimated by Precise Point Positioning (PPP) has been observed in the presence of strong variation in the ROT...La ionosfera constituye una de las mayores fuentes de error en el posicionamiento GNSS (Global Navigation Satellite System) no sólo debido al hecho de que la refracción ionosférica puede introducir errores de algunos metros en las medidas de distancia satélite-receptor, sino también a la frecuente aparición de irregularidades en la densidad de plasma que dan lugar a degradaciones de las señales electromagnéticas que las atraviesan. El efecto de las irregularidades ionosféricas sobre las señales GNSS se puede cuantificar por medio de la estimación del TEC (Total Electron Content) a partir de observaciones de señales en doble frecuencia. En latitudes medias se espera que los valores de TEC varíen de una forma suave en los periodos tranquilos mientras que la presencia de irregularidades importantes está relacionada con tormentas magnéticas y otros fenómenos significativos de la Meteorología Espacial. En cambio, las características físicas de la ionosfera a bajas latitudes magnéticas inducen, entre otros fenómenos, la aparición de un tipo peculiar de irregularidades conocidas como burbujas de plasma ecuatorial (EPBs) que se caracterizan por disminuciones bruscas del TEC. La diferencia en la física de la ionosfera para bajas y medias latitudes marca una de las pautas fundamentales de este trabajo en el que se utiliza el parámetro ROT (Rate Of change of TEC) para evaluar las variaciones del contenido electrónico con el tiempo. En el caso del posicionamiento realizado mediante receptores de doble frecuencia, el error introducido por la ionosfera puede ser eliminado en primera aproximación mediante la corrección conocida como “combinación libre de ionosfera”. Sin embargo, se ha observado la presencia de errores significativos en la altura obtenida mediante el Posicionamiento Puntual de Precisión (PPP) bajo condiciones de fuerte variación del ROT...Depto. de Física de la Tierra y AstrofísicaFac. de Ciencias FísicasTRUEunpu

Remote Sensing and Geosciences for Archaeology

This book collects more than 20 papers, written by renowned experts and scientists from across the globe, that showcase the state-of-the-art and forefront research in archaeological remote sensing and the use of geoscientific techniques to investigate archaeological records and cultural heritage. Very high resolution satellite images from optical and radar space-borne sensors, airborne multi-spectral images, ground penetrating radar, terrestrial laser scanning, 3D modelling, Geographyc Information Systems (GIS) are among the techniques used in the archaeological studies published in this book. The reader can learn how to use these instruments and sensors, also in combination, to investigate cultural landscapes, discover new sites, reconstruct paleo-landscapes, augment the knowledge of monuments, and assess the condition of heritage at risk. Case studies scattered across Europe, Asia and America are presented: from the World UNESCO World Heritage Site of Lines and Geoglyphs of Nasca and Palpa to heritage under threat in the Middle East and North Africa, from coastal heritage in the intertidal flats of the German North Sea to Early and Neolithic settlements in Thessaly. Beginners will learn robust research methodologies and take inspiration; mature scholars will for sure derive inputs for new research and applications

30th International Conference on Condition Monitoring and Diagnostic Engineering Management (COMADEM 2017)

Proceedings of COMADEM 201

Intelligent Circuits and Systems

ICICS-2020 is the third conference initiated by the School of Electronics and Electrical Engineering at Lovely Professional University that explored recent innovations of researchers working for the development of smart and green technologies in the fields of Energy, Electronics, Communications, Computers, and Control. ICICS provides innovators to identify new opportunities for the social and economic benefits of society.　 This conference bridges the gap between academics and R&D institutions, social visionaries, and experts from all strata of society to present their ongoing research activities and foster research relations between them. It provides opportunities for the exchange of new ideas, applications, and experiences in the field of smart technologies and finding global partners for future collaboration. The ICICS-2020 was conducted in two broad categories, Intelligent Circuits & Intelligent Systems and Emerging Technologies in Electrical Engineering