24,166 research outputs found
The SoLid anti-neutrino detector's readout system
No full textThe SoLid collaboration have developed an intelligent readout system to reduce their 3200 silicon photomultiplier detector's data rate by a factor of 10000 whilst maintaining high efficiency for storing data from anti-neutrino interactions. The system employs an FPGA-level waveform characterisation to trigger on neutron signals. Following a trigger, data from a space time region of interest around the neutron will be read out using the IPbus protocol. In these proceedings the design of the readout system is explained and results showing the performance of a prototype version of the system are presented
The CCube reconstruction algorithm for the SoLid experiment
No full textThe SoLid experiment is a very-short-baseline experiment aimed at searching
for nuclear reactor-produced active to sterile antineutrino oscillations. The
detection principle is based on the pairing of two types of solid
scintillators: polyvinyl toluene and LiF:ZnS(Ag), which is a new technology
used in this field of Physics. In addition to good neutron-gamma
discrimination, this setup allows the detector to be highly segmented (the
basic detection unit is a 5 cm side cube). High segmentation provides numerous
advantages, including the precise location of Inverse Beta Decay (IBD)
products, the derivation of the considerate antineutrino energy estimator, and
a powerful background reduction tool based on the topological signature of the
signal. Finally, the system is read out by a network of wavelength-shifting
fibres coupled to a photodetector (MPPC). This paper describes the design of
the reconstruction algorithm that allows maximum use of the granularity of the
detector. The goal of the algorithm is to convert the output of the
optical-fibre readout to the list of the detection units from which it
originated. This paper provides a performance comparison for three methods and
concludes with a choice of the baseline approach for the experiment.Comment: 23 pages, 9 figure
Identification of Background Components with the SoLid anti-Neutrino Detector
No full textAbstract: The SoLid experiment aims to measure the anti-neutrino energy spectrum 5.5-10m from the core of the BR2 nuclear reactor at SCK.CEN in Mol, Belgium. The goal is to provide the most sensitive search for short-baseline neutrino oscillations and to resolve the reactor neutrino anomaly. In fact, the proposed detector technology will be very useful for anti-neutrino detection in other settings as well, such as nuclear safeguard and non-proliferation monitoring of nuclear reactors. The experiment utilizes a novel, highly segmented composite scintillator detector. The detector unit is based on 5 cm polyvinyl toluene scintillator cubes, thin neutron sensitive (LiF)-Li-6:ZnS(Ag) sheets and a reflective Tyvek layer wrapping them for light tight. The first full-scale 288 kg detector prototype based on this technology was deployed at the BR2 reactor in November 2014. The main purpose was to study the capability of the detector design to discriminate background. Due to the low overburden and proximity to a nuclear reactor, efficient background reduction is crucial for a successful experiment. This work presents the advantages of the SoLid detector design for background reduction. The background components discussed in this proceeding are focused on the atmospheric and spallation neutrons induced by cosmic rays. The results are based on a full chain Geant4 based Monte Carlo simulations of the first full-scale Solid prototype detector, and when applicable, also their comparison with measured data
Value proposition analysis for solid state lighting: A case study of Ahmedali Ahmed Electrical Contracting; Marketing the product in the Kingdom of Bahrain
No full textThe proposition given to a product or service in terms of its worth given by a customer is researched and analysed to find the underlying factors contributing to the value. The study is undertaken to investigate the different factors that lays ground for increased ‘Customer value’ and ‘Product Value’. The research objective is to find the “Value Proposition Analysis for Solid State Lighting: a Case Study AhmedAli Ahmed Electrical Contracting; Marketing the product in the Kingdom of Bahrain” Most businesses generate profits, when the customers give a certain value(s) to the service/product provided by the business entity. This could involve many attributes to consider. The project overlooks in to this value significantly to understand the attributes that collectively contributes to ‘Valued Relation’ between the customer and the business. This is achieved by making effective use of literature suggested by various authors and by employing research strategies to validate the literature through the findings. The research also looks in to the case study organisation to fully understand the capabilities of the company to market the product. Thus, this analysis will be specifically looking in to the value proposition given to Solid State Lighting by the current UK customers and by clients of AhamedAli Ahmed Electrical Contracting, Kingdom of Bahrain. However, this analysis must viewed critically, as the product comes at a premium price and the study will be much centred in the Kingdom of Bahrain and cannot be generalised for the other GCC countries or the Middle East. This study is focused to generate strategies in marketing Solid State Lighting in Bahrain taking A.A.E as the Case Study Organisation understanding the Value Proposition for Solid State Lighting
SoLid : an innovative anti-neutrino detector for searching oscillations at the SCKoCEN BR2 reactor
No full textAbstract: The SoLid experiment intends to search for active-to-sterile anti-neutrino oscillations at a very short baseline from the SCK center dot CEN BR2 research reactor (Mol, Belgium). A novel detector approach to measure reactor anti-neutrinos was developed based on an innovative sandwich of composite polyvinyl-toluene and (LiF)-Li-6:ZnS(Ag) scintillators. The system is highly segmented and read out by a network of wavelength shifting fibers and SiPM. High experimental sensitivity can be achieved compared to other standard technologies thanks to the combination of high granularity, good neutron gamma discrimination using (LiF)-Li-6:ZnS(Ag) scintillator and precise localisation of the Inverse Beta Decay products. This technology can be considered as a new generation of an anti-neutrino detector. This compact system regbires limited passive shielding and relies on spatial topology to determine the different classes of backgrounds. We will describe the principle of detection and the detector design. Particular focus on the neutron discrimination will be made, as well as on the capability to use cosmic moons for channel equalisation and energy calibration. The performance of the first 288 kg SoLid module (SM1), based on the data taken at BR2 from February to September 2015, will be presented. We will conclude with the next phase, which will start in 2016, and the future plans of the experiment. (C) 2016 Elsevier B.V. All rights reserved
Engineering collaboration tools selection for the Woods Equipment Company
No full textPlan BWith Corporate America's consolidating efforts of bringing together organizations through takeovers, mergers and buyouts, more and more corporations are investing in ways to share information between different locations. Headquartered in Rockford, Illinois, the Woods Equipment Company is comprised of divisions in nine separate locations. The problem of this study is to select engineering collaboration tools for the Woods Equipment Company to increase cooperative exchange of resources, information and ideas among a team of colleagues focused on engineering projects. This research is directed towards helping Woods search through the maze of collaboration tools available in the market today and make the best possible selection for its needs. A variety of collaboration tools have been considered ranging from telecommunication, email, group ware, data conferencing, application sharing, video conferencing and shared 3D virtual reality
Guest Editorial Introduction to the Special Issue on the 2022 IEEE International Solid-State Circuits Conference (ISSCC)
No full textThe International Technical Program Committee (ITPC) of the IEEE International Solid-State Circuits Conference (ISSCC) selects outstanding articles from the papers presented at the conference and invites the authors to submit an extended manuscript to the Special Issue of IEEE Journal of Solid-State Circuits (JSSC). This November issue contains the selected papers from the Imagers, microelectromechanical systems (MEMS), and Displays (IMMD) and the Technology Directions (TD) sub-committees. Papers from Analog, Data Converters, Power Management, RF, and Wireless subcommittees are included in the December issue. Finally, the January issue will contain papers from Digital Architectures and Systems, Digital Circuits, Machine Learning, Memory, and Wireline subcommittees.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Quantum Circuit Architectures and Technolog
Industry-Academia Research Collaboration; characterising structure, process & attitudes in support of best practice
No full textIndustry-academia collaborative research has become a subject of increasing
interest in recent years to academics, industrialists and policymakers due to
greater awareness of the importance of such links for innovation and the
knowledge-based economy. However, such collaborations are not always
successful for reasons which are poorly researched. The main objective of this
thesis is to identify the main factors that impede or enhance successful
research collaboration. The research agenda is guided by a review of the
current literature which indicates that the effectiveness of industry-academia
collaborative research depends to some extent on the following factors: (i) the
motivations/objectives for collaborative research, (ii) the modes of
communication between collaborative partners, and (iii) the management of the
collaborative process. The influence of each of these three factors on
collaboration effectiveness is investigated using a conceptual model and two
pieces of complementary fieldwork.
The conceptual model illustrates the relationship between the three factors and
the structure of collaboration, the collaborative process and the attitudes of
collaborative participants. The fieldwork activities, which provide data on
individual perceptions of industry-academia collaborative research experience,
comprise an interview survey of collaborative research facilitators, and a
questionnaire survey of students working on projects jointly supervised by
academics and industrialists. Findings from these two activities are analysed in
terms of their contribution to the existing literature on industry-academia
collaboration and their conformity with the conceptual model. The perspectives
of the research facilitators are also directly compared with those of the students.
The results support current awareness in the literature that industry-academia
collaborations are difficult to analyse and manage because of their diverse
structures, their dynamic nature and the variety of factors that influence their
effectiveness. Whilst the research findings do provide some indication of why
collaborations succeed or fail and how they can best be managed, the fact that
no two collaborations are the same in terms of motivations, objectives,
structure, process, outcomes, type of participants, etc., precludes prescriptive
generalisations. Suggestions for best practice include adopting an adaptable
management structure and using a 'relationship management' approach for
long term collaborative relationships
Many-electron treatment of quasi-resonant ion neutralization at solid surfaces
No full textPT: J; CR: AMOS AT, IN PRESS ADV CHEM AMOS AT, 1986, PHYS LETT A, V118, P471 BATTAGLIA F, 1985, J CHEMM PHYS, V83, P3847 BATTAGLIA F, 1985, SURF SCI, V161, P163 DAVISON SG, 1986, J ELECTROANAL CH INF, V204, P173 EASA SI, 1985, SURF SCI, V161, P129 ERICKSON RL, 1975, PHYS REV LETT, V34, P297 GRIMLEY TB, 1983, SURF SCI, V124, P305 ROSEN N, 1932, PHYS REV, V40, P502 RUSH TW, 1977, INELASTIC ION SURFAC, P73 SEBASTIAN KL, 1983, PHYS LETT A, V98, P39 SEBASTIAN KL, 1985, PHYS REV B, V31, P6976 SULSTON KW, 1921, PHYS REV B, V37, P91 SULSTON KW, 1988, SURF SCI, V197, P555; NR: 14; TC: 3; J9: SOLID STATE COMMUN; PG: 4; GA: AJ742Source type: Electronic(1
Development of miniature all-solid-state potentiometric sensing system
No full textA procedure for the development of a pen-like, multi-electrode potentiometric sensing platform is described. The platform comprises a seven-in-one electrode incorporating all-solid-state ion-selective and reference electrodes based on the conductive polymer (poly(3,4-ethylenedioxythiophene) (PEDOT)) as an intermediate layer between the contacts and ion-selective membranes. The ion-selective electrodes are based on traditional, ionophore-based membranes, while the reference electrode is based on a polymer membrane doped with the lipophilic salt tetrabutyl ammonium tetrabutyl borate (TBA-TBB). The electrodes, controlled with a multichannel detector system, were used for simultaneous determination of the concentration of Pb2+ and pH in environmental water samples. The results obtained using pH-selective electrodes were compared with data obtained using a conventional pH meter and the average percent difference was 0.3%. Furthermore, the sensing system was successfully used for lead-speciation analysis in environmental water samples
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