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TIGER read-out for the new CGEM inner tracker off the BESIII experiment
Get PDFTIGER (Torino Integrated GEM Electronics for Read-out) will
be the innovative on detector electronics for the upgrade of the inner tracker in the BESIII experiment. The chip will allow the analogue read-out of the CGEM strips, making the merging of two different signal reconstruction algorithms possible improving the performance with respect to the main drift chamber (MDC) currently installed
Measurements of Higgs boson production cross-section and CP violation in the H → τ τ decay channel with the ATLAS detector
Get PDFThe H → τ τ decay is an important decay mode of the Higgs boson as it allows to measure directly the Higgs coupling to fermions. This paper presents the measurement of the H → τ τ cross-section and a test of CP invariance in the Higgs boson production performed in the same channel. The results achieved using the data collected by the ATLAS experiment during the Run 1 of the LHC (2011–2012), corresponding to 20 fb−1, are shown and future perspectives for the Run 2 are described as well
Status and perspectives of large PMT electronics of the JUNO experiment
Get PDFIn this work, after a brief introduction on the JUNO experiment, the requirements of the JUNO electronics will be pointed out. To fulfill all the requirements a new scheme, called 1F3, for the JUNO electronics was proposed on July 2017. In the 1F3 scheme the voltage divider will be directly connected and potted with the PMT. The signal, coming from the base, will be connected to an electronics underwater box in which there will be the HV voltage supply units and the processing electronics. The current status of all the JUNO electronics boards (GCU, ADU, power board, HV units and BEC) will be described
Simulating the LHCb hadron calorimeter with generative adversarial networks
Get PDFGenerative adversarial networks are known as a tool for fast simulation of data. Our aim is to research and develop a physical application of these tools by simulating LHCb hadron calorimeter (HCAL) in order to speed up the Monte Carlo datasets production
Seismogenic fault characterization in the Pollino area (Southern Italy)
Get PDFOne of the most intense periods of the 2010–2014 Pollino swarm (Southern Italy), namely from November 2011 to April 2012, has been analyzed with the aim of a precise relocation of the hypocenters in order to image the seismogenetic structure(s) responsible for this swarm. Using recordings of temporary and permanent stations installed in the area during the sequence, we identified 18 clusters of earthquakes characterized by extremely similar waveforms, selected through a crosscorrelation analysis. We performed a relative location of each event of each cluster. For each cluster the spatial distribution of hypocenters was fitted by a plane to infer the fault plane orientation. We compared the results with the focal mechanism of individual earthquakes of the same cluster. For an overall view of the relative position of each reference event of all analyzed clusters, we performed the relative location of all these master events adjusted to take into account the different shapes of the waveforms. The results show that different clusters are likely patches of the same fault plane, mostly parallel among them and with similar focal mechanisms, with a strike angle in the NW-SE direction and dip around 35–45 degrees, deepening SW toward the Tyrrhenian sea. The absolute location gives a depth distribution between 4.5 and 6 km b.s.l
CP violation in charmless multi-body beauty decays
Get PDFThe multi-body charmless decays of beauty hadrons are rich in CPviolating phenomena. The LHCb experiment plays an important role in b-quark physics, with its ability to study all types of b-hadrons. This document outlines some of the latest results on multi-body charmless b-meson decays from the LHCb experiment. The first amplitude analyses of the decays B0s → K0 SK±π∓ and the decay B± → π±K+K− are presented
Searches for SUSY at the LHC
Get PDFThe ATLAS and CMS Collaborations have a very active program
of searches for Supersymmetric particles. In this paper recent results obtained with the data collected during the second run of the Large Hadron Collider are discussed
Dark sector physics at the Belle II experiment
Get PDFThe Belle II experiment at the SuperKEKB energy-asymmetric
e+e− collider is a substantial upgrade of the B factory facility at the Japanese KEK laboratory. The design luminosity of the machine is 8×1035 cm−2s−1 and the Belle
II experiment aims to record 50 ab−1 of data, a factor of 50 more than its predecessor. From February to July 2018, the machine has completed a commissioning run, achieved a peak luminosity of 5.5 × 1033 cm−2s−1, and Belle II has recorded a data sample of about 0.5 fb−1. Main operation of SuperKEKB has started in March 2019. Already this early data set with specifically designed triggers offers the possibility to search for a large variety of dark sector particles in the GeV mass range complementary to the Large Hadron Collider (LHC) and dedicated low energy experiments; these searches will benefit from more data in the process of being accumulated. This talk will review the state of the dark sector searches at Belle II with a focus on the discovery potential of the early data, and show the first results
“How a good video can remove ‘barriers’ for a more inclusive science communication”
Get PDFThere is a burgeoning body of evidence suggesting that technology can enhance learning, and multiple studies have shown that videos represent a very effective tool in science engagement and education. In fact, video media can transform the complexities of science and nature into something more tangible and tractable (Dabylchuk et al., 2018). Documentaries can hence be powerful tools for learning, to raise awareness for important topics, and adding a scientific approach makes it possible to deepen knowledge about the world. According to Dale’s cone of experience (Fig. 1), people memorize 10% of what they read, 20% of what they hear, 30% of what they see and 50% of what they hear and see (Wiman and Mierhenry, 1969). These statistics seems to convey a very clear message: blind or visually impaired people are penalised in the learning compared to sighted ones.
However, our experience in the area of inclusive science communication has led us to wonder: are we sure that sight is a fundamental means for learning? Or is it possible that sight is a predominant sense over others, and therefore it can even mislead or limit learning? To answer this question, we held an ad-hoc educational laboratory with the users of the “IstitutodeiCiechiOpereRiunite I. Florio – F. ed A. Salamone” of Palermo, with which we have established a convention on 29/01/2019. Specifically, we involved 20 users with different degrees of visual impairment, in the projection of three science videos, selected from those realised by the EDUlab divulgation group over the years. At the end of the video projection, users were asked to express their opinions and their personal interpretations of scientific issues, allowing us to understand what e how many information have been received and, above all, if sighted usersare really advantaged compared to the visually impaired ones
Hybrid Adsorption-Compression Systems for Air Conditioning in Efficient Buildings: Design through Validated Dynamic Models
Get PDFHybrid sorption-compression systems are gaining interest for heating/cooling/ refrigeration purposes in different applications, since they allow exploiting the benefits of both technologies and a better utilization of renewable sources. However, design of such components is still difficult, due to the intrinsic complexity of the systems and the lack of reliable models. In particular, the combination of adsorption-compression cascade unit has not been widely explored yet and there are no simulations or sizing tools reported in the literature. In this context, the present paper describes a model of a hybrid adsorption-compression system, realised in Modelica language using the commercial software Dymola. The models of the main components of the sorption and vapour compression unit are described in details and their validation presented. In addition, the integrated model is used for proving the feasibility of the system under dynamic realistic conditions and an example of the technical sizing that the model is able to accomplish is given