scholarly journals KSEMAW: an open source software for the analysis ofspectrophotometric, ellipsometric andphotothermal deflection spectroscopy measurements

2021 ◽  
Vol 1 ◽  
pp. 95
Author(s):  
Marco Montecchi ◽  
Alberto Mittiga ◽  
Claudia Malerba ◽  
Francesca Menchini
Keyword(s):  
Thin Film ◽  
Open Source ◽  
Open Source Software ◽  
High Energy Physics ◽  
Complex Refractive Index ◽  
Optical Filters ◽  
High Energy ◽  
Spectral Measurements ◽  
Thin Film Characterization ◽  
Optical Behavior

The optical behavior of devices based on thin films is determined by complex refractive index and thickness of each slab composing the stack; these important parameters are usually evaluated from photometric and/or ellipsometric spectral measurements, given a model of the stack, by means of dedicated software. In the case of complex multilayer devices, generally a number of simpler specimens (like single-film on substrate) must be preliminarily characterized. This paper introduces the reader to a new open source software for thin film characterization finally released after about 30 years of development. The software has already been used in various fields of physics, such as thin film optical filters, architectural glazing, detectors for high energy physics, solar energy, and, last but not least, photovoltaic devices. Code source files, user manual as well as a sample of working directories populated with assorted files can be freely downloaded from the kSEMAW GitHub repository.

scholarly journals CMS Experience with Adoption of the Community supported DD4hep Toolkit

2020 ◽  
Vol 245 ◽  
pp. 02032
Author(s):  
Carl Vuosalo ◽  
Sunanda Banerjee ◽  
Markus Frank ◽  
Vladimir Ivanchenko ◽  
Sergio Lo Meo ◽  
...  
Keyword(s):  
Open Source ◽  
Open Source Software ◽  
High Energy Physics ◽  
High Energy ◽  
Software Requirements ◽  
Software Framework ◽  
Advantages And Disadvantages ◽  
To Come ◽  
Performance Results ◽  
Energy Physics

DD4hep is an open-source software toolkit that provides comprehensive and complete generic detector descriptions for high energy physics (HEP) detectors. The Compact Muon Solenoid collaboration (CMS) has recently evaluated and adopted DD4hep to replace its custom detector description software. CMS has demanding software requirements as a very large, longrunning experiment that must support legacy geometries and study many possible upgraded detector designs of a constantly evolving detector that will be taking data for many years to come. CMS has chosen DD4hep since it is a high-quality, community-supported solution that will benefit from continuing modernization and maintenance. This presentation will discuss the issues of DD4hep adoption, the advantages and disadvantages of the various design choices, performance results, and the integration of the plugin systems from CMS and Gaudi, another open-source software framework. Recommendations about DD4hep based upon the CMS use cases will also be presented.

scholarly journals Comparison of Neutron Detection Performance of Four Thin-Film Semiconductor Neutron Detectors Based on Geant4

Sensors ◽  
2021 ◽  
Vol 21 (23) ◽  
pp. 7930
Author(s):  
Zhongming Zhang ◽  
Michael D. Aspinall
Keyword(s):  
Thin Film ◽  
High Temperature ◽  
High Energy Physics ◽  
Detection Efficiency ◽  
Collection Efficiency ◽  
Radiation Detectors ◽  
High Energy ◽  
Semiconductor Materials ◽  
Third Generation ◽  
Neutron Detectors

Third-generation semiconductor materials have a wide band gap, high thermal conductivity, high chemical stability and strong radiation resistance. These materials have broad application prospects in optoelectronics, high-temperature and high-power equipment and radiation detectors. In this work, thin-film solid state neutron detectors made of four third-generation semiconductor materials are studied. Geant4 10.7 was used to analyze and optimize detectors. The optimal thicknesses required to achieve the highest detection efficiency for the four materials are studied. The optimized materials include diamond, silicon carbide (SiC), gallium oxide (Ga2O3) and gallium nitride (GaN), and the converter layer materials are boron carbide (B4C) and lithium fluoride (LiF) with a natural enrichment of boron and lithium. With optimal thickness, the primary knock-on atom (PKA) energy spectrum and displacements per atom (DPA) are studied to provide an indication of the radiation hardness of the four materials. The gamma rejection capabilities and electron collection efficiency (ECE) of these materials have also been studied. This work will contribute to manufacturing radiation-resistant, high-temperature-resistant and fast response neutron detectors. It will facilitate reactor monitoring, high-energy physics experiments and nuclear fusion research.

scholarly journals Evolution of the open-source data management system Ru-cio for LHC Run-3 and beyond ATLAS

2019 ◽  
Vol 214 ◽  
pp. 04054
Author(s):  
Martin Barisits ◽  
Thomas Beermann ◽  
Joaquin Bogado ◽  
Vincent Garonne ◽  
Tomas Javurek ◽  
...  
Keyword(s):  
Data Management ◽  
Open Source ◽  
Management System ◽  
High Energy Physics ◽  
High Energy ◽  
Full Scale ◽  
Data Management System ◽  
Distributed Data ◽  
Open Source Data ◽  
Level Data

Rucio, the distributed data management system of the ATLAS experiment already manages more than 400 Petabytes of physics data on the grid. Rucio was incrementally improved throughout LHC Run-2 and is currently being prepared for the HL-LHC era of the experiment. Next to these improvements the system is currently evolving into a full-scale generic data management system for application beyond ATLAS, or even beyond high-energy physics. This contribution focuses on the development roadmap of Rucio for LHC Run-3, such as event level data management, generic meta-data support and increased usage of networks and tapes. At the same time Rucio is evolving beyond the original ATLAS requirements. This includes additional authentication mechanisms, generic database compatibility, deployment and packaging of the software stack in containers, and a project paradigm shift to a full-scale open source project..

scholarly journals DAQling: an open-source data acquisition framework

2020 ◽  
Vol 245 ◽  
pp. 01026
Author(s):  
Marco Boretto ◽  
Wojciech Brylinski ◽  
Giovanna Lehmann Miotto ◽  
Enrico Gamberini ◽  
Roland Sipos ◽  
...  
Keyword(s):  
Data Acquisition ◽  
Open Source ◽  
Process Management ◽  
High Energy Physics ◽  
Building Blocks ◽  
High Energy ◽  
Distributed Applications ◽  
The Core ◽  
Open Source Data ◽  
Communication Layer

The Data AcQuisition (DAQ) software for most applications in high energy physics is composed of common building blocks, such as a networking layer, plug-in loading, configuration, and process management. These are often re-invented and developed from scratch for each project or experiment around specific needs. In some cases, time and available resources can be limited and make development requirements difficult or impossible to meet. Moved by these premises, our team developed an open-source lightweight C++ software framework called DAQling, to be used as the core for the DAQ systems of small and medium-sized experiments and collaborations. The framework offers a complete DAQ ecosystem, including a communication layer based on the widespread ZeroMQ messaging library, configuration management based on the JSON format, control of distributed applications, extendable operational monitoring with web-based visualisation, and a set of generic utilities. The framework comes with minimal dependencies, and provides automated host and build environment setup based on the Ansible automation tool. Finally, the end-user code is wrapped in so-called “Modules”, that can be loaded at configuration time, and implement specific roles. Several collaborations already chose DAQling as the core for their DAQ systems, such as FASER, RD51, and NA61/SHINE. We will present the framework and project-specific implementations and experiences.

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