Temat: detectors - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Performance of the ATLAS Transition Radiation Tracker in Run 1 of the LHC : tracker properties
Autorzy:: Richter-Wąs, Elżbieta
Pałka, Marek
Współwytwórcy:: Współautorami artykułu są członkowie ATLAS Collaboration w liczbie 2837
Opis:: The tracking performance parameters of the ATLAS Transition Radiation Tracker (TRT) as part of the ATLAS inner detector are described in this paper for different data-taking conditions in proton-proton, proton-lead and lead-lead collisions at the Large Hadron Collider (LHC). The performance is studied using data collected during the first period of LHC operation (Run 1) and is compared with Monte Carlo simulations. The performance of the TRT, operating with two different gas mixtures (xenon-based and argon-based) and its dependence on the TRT occupancy is presented. These studies show that the tracking performance of the TRT is similar for the two gas mixtures and that a significant contribution to the particle momentum resolution is made by the TRT up to high particle densities.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 2.

Tytuł:: GPS-based CERN-LNGS time link for Borexino
Autorzy:: Pettiti, V.
Pallavicini, M.
Korga, G.
Misiaszek, Marcin
Razeto, A.
Cerretto, G.
Cavalcante, P.
Plantard, C.
Caccianiga, B.
Esteban, H.
Orsini, M.
Opis:: We describe the design, the equipment, and the calibration of a new GPS based time link between CERN and the Borexino experiment at the Gran Sasso Laboratory in Italy. This system has been installed and operated in Borexino since March 2012, and used for a precise measurement of CNGS muon neutrinos speed in May 2012. The result of the measurement will be reported in a different letter.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 3.

Tytuł:: A neural network clustering algorithm for the ATLAS silicon pixel detector
Autorzy:: Pałka, Marek
Współwytwórcy:: Współautorami artykułu są członkowie ATLAS Collaboration w liczbie 2303
Opis:: A novel technique to identify and split clusters created by multiple charged particles in the ATLAS pixel detector using a set of artificial neural networks is presented. Such merged clusters are a common feature of tracks originating from highly energetic objects, such as jets. Neural networks are trained using Monte Carlo samples produced with a detailed detector simulation. This technique replaces the former clustering approach based on a connected component analysis and charge interpolation. The performance of the neural network splitting technique is quantified using data from proton-proton collisions at the LHC collected by the ATLAS detector in 2011 and from Monte Carlo simulations. This technique reduces the number of clusters shared between tracks in highly energetic jets by up to a factor of three. It also provides more precise position and error estimates of the clusters in both the transverse and longitudinal impact parameter resolution.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 4.

Tytuł:: Performance of the ATLAS forward proton Time-of-Flight detector in Run 2
Autorzy:: Przygoda, Witold
Richter-Wąs, Elżbieta
Topolnicki, Kacper
Gil, Damian
Współwytwórcy:: Współautorami artykułu są członkowie ATLAS Collaboration w liczbie 2877
Opis:: We present performance studies of the Time-of-Flight (ToF) subdetector of the ATLAS Forward Proton (AFP) detector at the LHC. Efficiencies and resolutions are measured using high-statistics data samples collected at low and moderate pile-up in 2017, the first year when the detectors were installed on both sides of the interaction region. While low efficiencies are observed, of the order of a few percent, the resolutions of the two ToF detectors measured individually are 21 ps and 28 ps, yielding an expected resolution of the longitudinal position of the interaction, z$_{vtx}$, in the central ATLAS detector of 5.3 ± 0.6 mm. This is in agreement with the observed width of the distribution of the difference between zvtx, measured independently by the central ATLAS tracker and by the ToF detector, of 6.0 ± 2.0 mm.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 5.

Tytuł:: Analiza systemu zobrazowania temperaturowego w rotującym pocisku
Analysis of a thermal image system in rotating missiles
Autorzy:: Piotrowski, J.
Szabra, D.
Tematy:: detektory
detectors; Pokaż więcej
Wydawca:: Wojskowy Instytut Techniczny Uzbrojenia
Powiązania:: https://bibliotekanauki.pl/articles/234922.pdf Link otwiera się w nowym oknie
Opis:: Analizowano system zobrazowania temperaturowego rotującego pocisku zawierającego linijkę detektorową umieszczoną radialnie w płaszczyźnie obrazowej głowicy. Zbadano możliwość osiągnięcia dyskryminacji celu wymaganego do samonaprowadzania pocisku przy zastosowaniu detektorów Hg1-xCdxTe pracujących bez chłodzenia kriogenicznego. Wykrycie celu umożliwiają niechłodzone długofalowe fotodetektory dostępne handlowo. Dla uzyskania wyższych stopni dyskryminacji konieczne jest zastosowanie chłodzonych detektorów lub detektorów z immersją optyczną.
A thermal image system in the form of a radial linear array of detectors placed in the seeking head image plane of the rotating missile is analysed in the paper. The application of detectors made from the composition of mercury-cadmium-tellurium operating without cryogenic cooling to discriminate a target in self-guiding missiles is considered. The detection of targets can be provided by commercially available detectors whereas the achieving of a higher resolution level requires the detectors which are cooled or work with the optical immersion.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Expected tracking performance of the ATLAS Inner Tracker at the high-luminosity LHC
Autorzy:: Gil, Damian
Volkotrub, Yuriy
Przygoda, Witold
Richter-Wąs, Elżbieta
Współwytwórcy:: Współautorami artykułu są członkowie ATLAS Collaboration w liczbie 2904
Opis:: The high-luminosity phase of LHC operations (HL-LHC), will feature a large increase in simultaneous proton-proton interactions per bunch crossing up to 200, compared with a typical leveling target of 64 in Run 3. Such an increase will create a very challenging environment in which to perform charged particle trajectory reconstruction, a task crucial for the success of the ATLAS physics program, and will exceed the capabilities of the current ATLAS Inner Detector (ID). A new all-silicon Inner Tracker (ITk) will replace the current ID in time for the start of the HL-LHC. To ensure successful use of the ITk capabilities in Run 4 and beyond, the ATLAS tracking software has been successfully adapted to achieve state-of-the-art track reconstruction in challenging high-luminosity conditions with the ITk detector. This paper presents the expected tracking performance of the ATLAS ITk based on the latest available developments since the ITk technical design reports.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 7.

Tytuł:: Optimization of GEM-based detector readout electrode structure for SXR imaging of tokamak plasma
Autorzy:: Chernyshova, Maryna
Jabłoński, Sławomir
Casiraghi, Irene
Malinowski, Karol
Wydawca:: IOP Publishing Ltd for Sissa Medialab
Cytata wydawnicza:: K. Malinowski et al 2021 JINST 16 C11014
Opis:: The Version of Record is available online at DOI: 10.1088/1748-0221/16/11/C11014
The paper presents an optimization of a readout structure of the GEM-based detector designed for X-ray imaging for DTT tokamak in the energy range of 2–15 keV. The readout electrode of approximately 100 cm2 surface is composed of hexagonal pixels connected in a way that allows reducing the actual number of signal pixels (electronics channels). At the same time, based on time coincidence analysis, it makes possible to unambiguously identify the position of the recorded X-ray photon. For the input spectrum, the Detective Quantum Efficiency (DQE) of the detector was calculated using the Geant4 program and the spatial distributions of electron avalanches at the readout electrode were simulated using the Garfield++ program. These were conducted for a given energy range of radiation and a statistical distribution consistent with the shape of the spectrum considering the DQE of the detector. As a result, the size of a single hexagonal pixel was proposed to capture the position of the recorded radiation quanta in an optimal and effective way.
This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom Research and Training Programme 2014-2018 and 2019-2020 under Grant Agreement No. 633053. The views and opinions expressed herein do not necessarily reflect those of the European Commission. This scientific paper has been published as part of the international project co-financed by the Polish Ministry of Science and Higher Education within the programme called ‘PMW’ for 2021. This work has been partially carried out within the research project No. 2020/39/B/ST2/02681 financed by the National Science Center.
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

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Skocz do pozycji: 8.

Tytuł:: Seasonal modulation of the ^{7}Be solar neutrino rate in Borexino
Autorzy:: Bellini, G.
Muratova, V.
Chepurnov, A.
Pocar, A.
Tartaglia, R.
Stokes, L. F. F.
Schönert, S.
Korga, G.
Wang, H.
Lombardi, F.
Ianni, Aldo
Ding, X. F.
Calaprice, F.
D’Angelo, D.
Martyn, J.
Goeger-Neff, M.
Wójcik, Marcin
Ranucci, G.
Marcocci, S.
Vogelaar, R. B.
Opitz, B.
Hagner, C.
Giammarchi, M.
Ghiano, C.
Ianni, Andrea
Neumair, B.
Miramonti, L.
Jany, Anna
Weinz, S.
Shakina, P.
Roncin, R.
Papp, L.
Ludhova, L.
Agostini, M.
Franco, D.
Carlini, M.
Lukyanchenko, G.
Zaimidoroga, O.
Hungerford, E.
Pallavicini, M.
Meroni, E.
Manuzio, G.
Vishneva, A.
Atroshchenko, V.
Choi, K.
Goretti, A.
Bravo, D.
Litvinovich, E.
Borodikhina, L.
Lombardi, P.
Rossi, N.
Caccianiga, B.
Zuzel, Grzegorz
Drachnev, I.
Cavalcante, P.
Davini, S.
Galbiati, C.
Gabriele, F.
Zuber, K.
Ortica, F.
Yokley, Z.
Oberauer, L.
Smirnov, O.
Houdy, T.
Jeschke, D.
Toropova, M.
Fomenko, K.
Korablev, D.
Laubenstein, M.
Basilico, D.
Montuschi, M.
Meyer, M.
Zavatarelli, S.
Froborg, F.
Caprioli, S.
Altenmüller, K.
Sotnikov, A.
Bonfini, G.
Benziger, J.
Suvorov, Y.
Kryn, D.
Manecki, S.
Romani, A.
Skorokhvatov, M.
Gromov, M.
Misiaszek, Marcin
Bick, D.
Wurm, M.
von Feilitzsch, F.
Unzhakov, E.
Semenov, D.
Razeto, A.
Re, A.
Di Noto, L.
Thurn, J.
Machulin, I.
Derbin, A.
Lehnert, B.
Caminata, A.
Appel, S.
Kobychev, V.
Testera, G.
Opis:: We present the evidence for the seasonal modulation of the ^{7}Be neutrino interaction rate with the Borexino detector at the Laboratori Nazionali del Gran Sasso in Italy. The period, amplitude, and phase of the observed time evolution of the signal are consistent with its solar origin, and the absence of an annual modulation is rejected at 99.99% C.L. The data are analyzed using three methods: the analytical fit to event rate, the Lomb-Scargle and the Empirical Mode Decomposition techniques, which all yield results in excellent agreement.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 9.

Tytuł:: Potentialities of CdZnTe quasi-hemispherical detectors for hard X-ray spectroscopy of kaonic atoms at the DAΦNE collider
Autorzy:: Buttacavoli, Antonino
Khreptak, Aleksander
Curceanu, Catalina
Niedźwiecki, Szymon
Iwasaki, Misahiko
Piscicchia, Kristian
Toho, Kairo
Bettelli, Manuele
Cargnelli, Michael
Silarski, Michał
Sgaramella, Francesco
Skurzok, Magdalena
Ohnishi, Hiroaky
Sirghi, Diana L.
Marton, Johann
Zappettini, Andrea
Tüchler, Marlene
Guaraldo, Carlo
Iliescu, Mihail
Bragadireanu, Mario
De Paolis, Luca
Spallone, Antonio
Napolitano, Fabrizio
Sirghi, Florin
Gerardi, Gaetano
Bazzi, Massimiliano
Scordo, Alessandro
Clozza, Alberto
Deda, Griseld
Fabbietti, Laura
Manti, Simone
Shi, Hexi
Zmeskal, Johannes
Abbene, Leonardo
Del Grande, Raffaele
Doce, Oton V.
Moskal, Paweł
Miliucci, Marco
Carminati, Marco
Principato, Fabio
Sada, Yuta
Fiorini, Carlo
Yoshida, Chihiro
Opis:: Kaonic atom X-ray spectroscopy is a consolidated technique for investigations on the physics of strong kaon–nucleus/nucleon interaction. Several experiments have been conducted regarding the measurement of soft X-ray emission (<20 keV) from light kaonic atoms (hydrogen, deuterium, and helium). Currently, there have been new research activities within the framework of the SIDDHARTA-2 experiment and EXCALIBUR proposal focusing on performing precise and accurate measurements of hard X-rays (>20 keV) from intermediate kaonic atoms (carbon, aluminum, and sulfur). In this context, we investigated cadmium–zinc–telluride (CdZnTe or CZT) detectors, which have recently demonstrated high-resolution capabilities for hard X-ray and gamma-ray detection. A demonstrator prototype based on a new cadmium–zinc–telluride quasi-hemispherical detector and custom digital pulse processing electronics was developed. The detector covered a detection area of 1 cm$^{2}$ with a single readout channel and interesting room-temperature performance with energy resolution of 4.4% (2.6 keV), 3% (3.7 keV), and 1.4% (9.3 keV) FWHM at 59.5, 122.1, and 662 keV, respectively. The results from X-ray measurements at the DAΦNE collider at the INFN National Laboratories of Frascati (Italy) are also presented with particular attention to the effects and rejection of electromagnetic and hadronic background.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 10.

Tytuł:: Theoretical study of back-to-back avalanche photodiodes for dual-band infrared applications
Autorzy:: Manyk, Tetiana
Majkowycz, Kinga
Rutkowski, Jarosław
Martyniuk, Piotr
Tematy:: IR detectors
HgCdTe avalanche photodiodes
excess noise
gain
dual-band detectors; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
Powiązania:: https://bibliotekanauki.pl/articles/2204171.pdf Link otwiera się w nowym oknie
Opis:: The dual-band avalanche photodiode (APD) detector based on a HgCdTe material system was designed and analysed in detail numerically. A theoretical analysis of the two-colour APD intended for the mid wavelength infrared (MWIR) and long wavelength infrared (LWIR) ranges was conducted. The main purpose of the work was to indicate an approach to select APD structure parameters to achieve the best performance at high operating temperatures (HOT). The numerical simulations were performed by Crosslight numerical APSYS platform which is designed to simulate semiconductor optoelectronic devices. The current-voltage characteristics, current gain, and excess noise analysis at temperature T = 230 K vs. applied voltage for MWIR (U = 15 V) and LWIR (U = –6 V) ranges were performed. The influence of low and high doping in both active layers and barrier on the current gain and excess noise is shown. It was presented that an increase of the APD active layer doping leads to an increase in the photocurrent gain in the LWIR detector and a decrease in the MWIR device. The dark current and photocurrent gains were compared. Photocurrent gain is higher in both spectral ranges.
Dostawca treści:: Biblioteka Nauki

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