scholarly journals Detection techniques and investigation of different neutrino experiments

2021 ◽  
pp. 2130008
Author(s):  
Ankur Nath ◽  
Ng. K. Francis
Keyword(s):  
High Energy ◽  
Current Status ◽  
Mass Hierarchy ◽  
Unknown Parameters ◽  
Neutrino Mass Hierarchy ◽  
Detection Techniques ◽  
The Past ◽  
The Future ◽  
Primary Focus ◽  
Neutrino Experiments

Neutrino physics is an experimentally driven field. So, we investigate the different detection techniques available in the literature and study the various neutrino oscillation experiments in a chronological manner. Our primary focus is on the construction and detection mechanisms of each experiment. Today, we know a lot about this mysterious ghostly particle by performing different experiments at different times with different neutrino sources, viz. solar, atmospheric, reactor, accelerators and high-energy astrophysical; and they have contributed in the determination of neutrino parameters. Yet the problems are far from over. We need to determine more precise values of the already known parameters and unravel the completely unknown parameters. Some of the unknowns are absolute masses of neutrino, types of neutrino, mass hierarchy, octant degeneracy and existence of leptonic CP phase(s). We analyze the neutrino experiments into the past, present and the future (or proposed). We include SNO, Kamiokande, K2K, MINOS, MINOS+, Chooz, NEMO and ICARUS in the past; while Borexino, Double Chooz, Super-K, T2K, IceCube, KamLAND, NO[Formula: see text]A, RENO and Daya Bay in the present; and SNO+, Hyper-K, T2HK, JUNO, RENO-50, INO, DUNE, SuperNEMO, KM3NeT, P2O, LBNO and PINGU in the proposed experiments. We also discuss the necessities of upgrading the present ones to those of the proposed ones thereby summarizing the potentials of the future experiments. We conclude this paper with the current status of the neutrinos.

Majorana phases and neutrino–antineutrino oscillations

2014 ◽  
Vol 29 (21) ◽  
pp. 1444003 ◽  
Author(s):  
Zhi-Zhong Xing
Keyword(s):  
Neutrino Mass ◽  
Mass Hierarchy ◽  
Neutrino Mass Hierarchy ◽  
Special Cases ◽  
The Future ◽  
Massive Neutrinos ◽  
Neutrino Experiments ◽  
Majorana Phases

If massive neutrinos are the Majorana particles, how to pin down the Majorana CP-violating phases will eventually become an unavoidable question relevant to the future neutrino experiments. I argue that a study of neutrino–antineutrino oscillations will greatly help in this regard, although the issue remains purely academic at present. In this talk I first derive the probabilities and CP-violating asymmetries of neutrino–antineutrino oscillations in the three-flavor framework, and then illustrate their properties in two special cases: the normal neutrino mass hierarchy with m1 = 0 and the inverted neutrino mass hierarchy with m3 = 0. I demonstrate the significant contributions of the Majorana phases to the CP-violating asymmetries, even in the absence of the Dirac phase.

scholarly journals Past, present and future of thermal gasification of biomass and waste

2020 ◽  
pp. 5-20
Author(s):  
Jitka Hrbek
Keyword(s):  
The Netherlands ◽  
Coal Gasification ◽  
Current Status ◽  
The Past ◽  
The Future ◽  
Future Potential ◽  
Waste Gasification

The thermal gasification has been used for nearly 200 years. At the beginning coal or peat were used as a feedstock to produce gas for cooking and lighting. Nowadays, the coal gasification is still actual, anyway, in times without fossils the biomass and waste gasification becomes more important. In this paper, the past, present and future of the biomass and waste gasification (BWG) is discussed. The current status of BWG in Austria, Denmark, Germany, Italy, the Netherlands, Sweden and USA is detailed described and the future potential of the technology is outlined.

scholarly journals Machine Learning in KM3NeT

2019 ◽  
Vol 207 ◽  
pp. 05004 ◽  
Author(s):  
Chiara De Sio
Keyword(s):  
Machine Learning ◽  
Network Models ◽  
High Energy ◽  
Particle Identification ◽  
Machine Learning Techniques ◽  
Neutrino Interaction ◽  
Mass Hierarchy ◽  
Reconstruction Algorithms ◽  
Neural Network Models ◽  
Neutrino Mass Hierarchy

The KM3NeT Collaboration is building a network of underwater Cherenkov telescopes at two sites in the Mediterranean Sea, with the main goals of investigating astrophysical sources of high-energy neutrinos (ARCA) and of determining the neutrino mass hierarchy (ORCA). Various Machine Learning techniques, such as Random Forests, BDTs, Shallow and Deep Networks are being used for diverse tasks, such as event-type and particle identification, energy/direction estimation, source identification, signal/background discrimination and data analysis, with sound results as well as promising research paths. The main focus of this work is the application of Convolutional Neural Network models to the tasks of neutrino interaction classification, as well as the estimation of energy and direction of the propagating particles. The performances are also compared to those of the standard reconstruction algorithms used in the Collaboration.

scholarly journals Current Status and Future Prospects of the SNO+ Experiment

2016 ◽  
Vol 2016 ◽  
pp. 1-21 ◽  
Author(s):  
S. Andringa ◽  
E. Arushanova ◽  
S. Asahi ◽  
M. Askins ◽  
D. J. Auty ◽  
...  
Keyword(s):  
Phase I ◽  
Neutrino Mass ◽  
Liquid Scintillator ◽  
Solar Neutrinos ◽  
Double Beta Decay ◽  
Current Status ◽  
Pure Liquid ◽  
Neutrino Experiment ◽  
Mass Hierarchy ◽  
Neutrino Mass Hierarchy

SNO+ is a large liquid scintillator-based experiment located 2 km underground at SNOLAB, Sudbury, Canada. It reuses the Sudbury Neutrino Observatory detector, consisting of a 12 m diameter acrylic vessel which will be filled with about 780 tonnes of ultra-pure liquid scintillator. Designed as a multipurpose neutrino experiment, the primary goal of SNO+ is a search for the neutrinoless double-beta decay (0νββ) of130Te. In Phase I, the detector will be loaded with 0.3% natural tellurium, corresponding to nearly 800 kg of130Te, with an expected effective Majorana neutrino mass sensitivity in the region of 55–133 meV, just above the inverted mass hierarchy. Recently, the possibility of deploying up to ten times more natural tellurium has been investigated, which would enable SNO+ to achieve sensitivity deep into the parameter space for the inverted neutrino mass hierarchy in the future. Additionally, SNO+ aims to measure reactor antineutrino oscillations, low energy solar neutrinos, and geoneutrinos, to be sensitive to supernova neutrinos, and to search for exotic physics. A first phase with the detector filled with water will begin soon, with the scintillator phase expected to start after a few months of water data taking. The0νββPhase I is foreseen for 2017.

Revisiting Europe in search of regional cohesion

2020 ◽  
Vol 10 (3) ◽  
pp. 1-9
Author(s):  
John Agnew
Keyword(s):  
European Union ◽  
Social Cohesion ◽  
Current Status ◽  
The European Union ◽  
Global Competitiveness ◽  
Current Trends ◽  
The Future ◽  
East And West ◽  
Primary Focus ◽  
North And South

Abstract:The regions–cohesion nexus focuses on how much people and place “prosperity” cannot be readily distinguished but are intimately connected. After reviewing some older sources on this logic, the article examines the current status of social cohesion within the European Union and what the future might hold depending on how much a crucial balance between global competitiveness and social cohesion is restored as the centerpiece of the supranational union. Current trends point in different directions, so critical choices will have to be made if the European Union as a whole is to survive and prosper. The income and fiscal divides between East and West and North and South should be the primary focus for rehabilitating the regions–cohesion nexus.Resumen: El nexo regiones–cohesión se centra en la difi cultad de distinguir las personas de los lugares en “prosperidad”, porque están intrínsecamente conectados. Después de revisar algunas referencias clásicas sobre esta lógica, este artículo examina el estado actual de la cohesión social dentro de la UE y lo que puede deparar el futuro dependiendo de cuánto se puede restablecer un equilibrio crucial entre la competitividad global y la cohesión social, como pieza central de la unión supranacional. Las tendencias actuales apuntan en diferentes direcciones. Será necesario tomar decisiones críticas para que la UE en su conjunto pueda sobrevivir y prosperar. El ingreso y las divisiones fiscales entre Oriente y Occidente, Norte y Sur, deberían ser el foco principal de atención para rehabilitar el nexo regiones–cohesión.Résumé: L’étude du lien entre régions et cohésion montre l’interdépendance qui existe entre la prospérité des peuples de celles des lieux. A partir d’une revue de la bibliographie sur ce sujet, cet article examine l’état actuel de la cohésion sociale à l’intérieur de l’Union européenne. Il s’intéresse également à son futur et à l’importance de la restauration d’un équilibre entre la compétitivité globale et la cohésion sociale en faveur de l’union supranationale. Les tendances actuelles indiquent différentes directions de telle manière que des choix critiques devront être faits pour que l’EU dans son ensemble survive et prospère. Le nivelement des disparités salariales et fiscales entre l’Est et l’Ouest et le Nord et le Sud devrait être le premier objectif visant à réhabiliter le lien entre régions et cohésion.

scholarly journals A Summary

1979 ◽  
Vol 47 ◽  
pp. 465-467
Author(s):  
V. M. Blanco
Keyword(s):  
Current Status ◽  
Spectral Classification ◽  
Detection Techniques ◽  
The Future ◽  
Analytical Procedures ◽  
Opening Up

This has been a timely conference. Astronomical spectroscopic classification is facing crossroads that make it wise for us to look carefully at where we are now and which way we should go. The on-going explosion in detection techniques for fainter and fainter objects at all wavelengths and the availability of fast analytical procedures are opening up these new roads. It is a tribute to Fr. Patrick Treanor’s vision that we have gathered here to take stock of the current status and to consider the future of spectral classification and it was fitting that we did so while remembering the pioneering work of Fr. Angelo Secchi

Challenges Facing Hydrogen Fuel Cell Technology to Replace Combustion Engines

2013 ◽  
Vol 724-725 ◽  
pp. 715-722 ◽  
Author(s):  
R. K. Calay ◽  
Mohamad Y. Mustafa ◽  
Mahmoud F. Mustafa
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Internal Combustion Engines ◽  
High Energy ◽  
Current Status ◽  
Combustion Engines ◽  
Cell Technology ◽  
Fuel Cell Technology ◽  
Heat Engines ◽  
The Future

In this paper; technological challenges and commercialization barriers for Proton Exchange Membrane (PEM) fuel cell are presented. Initially, the criteria that must be met by the energy source of the future is presented from the point of view of the authors. Sustainability, high energy content and combustion independence are recognized as the main decisive factor of future fuels, which are all met by hydrogen, consequently the application of fuel cells as combustion free direct energy converters of the future. Fuel cell technology as an alternative to heat engines is discussed in the context of the current status of fuel cells in various applications. Finally, the challenges facing fuel cell technology to replace heat engines from the commercial and research points of view are presented and discussed supported by current trends in the industry. It is concluded that there have been several advancements and breakthrough in materials, manufacturing and fabricating techniques of fuel cells since the eighties, many of these challenges which are associated with cost and durability still exist when compared with the already matured technology of internal combustion engines. Any effort to achieve these goals would be a significant contribution to the technology of the fuel cell.

scholarly journals PHYSICS POTENTIAL OF A 2540 km BASELINE SUPERBEAM EXPERIMENT

2011 ◽  
Vol 26 (27) ◽  
pp. 2051-2063 ◽  
Author(s):  
ANIKET JOGLEKAR ◽  
SUPRABH PRAKASH ◽  
SUSHANT K. RAUT ◽  
S. UMA SANKAR
Keyword(s):  
Neutrino Mass ◽  
Neutrino Beam ◽  
Mass Hierarchy ◽  
Medium Energy ◽  
Neutrino Mass Hierarchy ◽  
Physics Potential ◽  
Reactor Neutrino ◽  
Numi Beam ◽  
Neutrino Experiments ◽  
Scintillator Detector

We study the physics potential of a neutrino superbeam experiment with a 2540 km baseline. We assume a neutrino beam similar to the NuMI beam in medium energy configuration. We consider a 100 kton totally active scintillator detector at a 7 mr off-axis location. We find that such a configuration has outstanding hierarchy discriminating capability. In conjunction with the data from the present reactor neutrino experiments, it can determine the neutrino mass hierarchy at 3σ level in less than 5 years, if sin22θ13≥0.01, running in the neutrino mode alone. As a stand alone experiment, with a five-year neutrino run and a five-year anti-neutrino run, it can determine nonzero θ13 at 3σ level if sin22θ13≥7×10-3 and hierarchy at 3σ level if sin22θ13≥8×10-3. This data can also distinguish δ CP = π/2 from the CP conserving values of 0 and π, for sin22θ13≥0.02.

Sign in / Sign up

Export Citation Format

Share Document