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  • A simulation tool for MRPC telescopes of the EEE project
    J. Instrum. (IF 1.454) Pub Date : 2020-10-18
    G. Mandaglio, M. Abbrescia, C. Avanzini, L. Baldini, R. Baldini Ferroli, G. Batignani, M. Battaglieri, S. Boi, E. Bossin, F. Carnesecchi, C. Cicalò, L. Cifarelli, F. Coccetti, E. Coccia, A. Corvaglia, D. De Gruttola, S. De Pasquale, F. Fabbri, A. Fulci, D. Falchieri, L. Galante, M. Garbini, G. Gemme, I. Gnesi, S. Grazzi, D. Hatzifotiadou, P. La Rocca, Z. Liu, L. Lombardo, G. Maron, M. N. Mazziotta

    The Extreme Energy Events (EEE) Project is mainly devoted to the study of the secondary cosmic ray radiation by using muon tracker telescopes made of three Multigap Resistive Plate Chambers (MRPC) each. The experiment consists of a telescope network mainly distributed across Italy, hosted in different building structures pertaining to high schools, universities and research centers. Therefore, the

    更新日期:2020-10-19
  • Precision cosmology in the era of large surveys
    J. Instrum. (IF 1.454) Pub Date : 2020-10-18
    Z. Fan

    The past hundred years marked the golden era of cosmic explorations. Our knowledge about the universe has reached an unprecedented depth attributing to the theoretical and observational developments. Meanwhile new challenges emerge leading to the continued excitement in probing cosmic mysteries. Because of the statistical nature, large astronomical surveys become increasingly important in cosmological

    更新日期:2020-10-19
  • Performance of the CMS Level-1 trigger in proton-proton collisions at √ s = 13 TeV
    J. Instrum. (IF 1.454) Pub Date : 2020-10-18
    A.M. Sirunyan, A. Tumasyan, W. Adam, F. Ambrogi, B. Arnold, H. Bergauer, T. Bergauer, M. Dragicevic, J. Erö, A. Escalante Del Valle, M. Flechl, R. Frühwirth, M. Jeitler, N. Krammer, I. Krätschmer, D. Liko, T. Madlener, I. Mikulec, N. Rad, J. Schieck, R. Schöfbeck, M. Spanring, S. Templ, W. Waltenberger, C.-E. Wulz, M. Zarucki, V. Drugakov, V. Mossolov, J. Suarez Gonzalez, M.R. Darwish, E.A. De Wolf

    At the start of Run 2 in 2015, the LHC delivered proton-proton collisions at a center-of-mass energy of 13\TeV. During Run 2 (years 2015–2018) the LHC eventually reached a luminosity of 2.1× 10 34 cm -2 s -1 , almost three times that reached during Run 1 (2009–2013) and a factor of two larger than the LHC design value, leading to events with up to a mean of about 50 simultaneous inelastic proton-proton

    更新日期:2020-10-19
  • Neutron induced noise degradation of ASICs in 350 nm CMOS technology
    J. Instrum. (IF 1.454) Pub Date : 2020-10-18
    Y. Zhang, S.-j. Chen, Y. Liu, W.-h. Wu, Y. Song, L. Zhong, H. Zhou and Z.-j. Sun

    Radiation tolerance of a 64-channels Application Specific Integrated Circuit (ASIC) used for the readout of scintillation neutron detector at CSNS has been tested using 1 MeV neutrons. This kind of ASICs is designed in 350 nm CMOS processes and consists of a charge sensitive pre-amplifier (CSA), a fast shaper amplifier, a discriminator and a mono-stable. MOS transistors are utilized to build the input

    更新日期:2020-10-19
  • Testing of triple GEM prototypes for the CBM Muon Chamber system in the mCBM experiment at the SIS18 facility of GSI
    J. Instrum. (IF 1.454) Pub Date : 2020-10-18
    A. Kumar, C. Ghosh, S. Chatterjee, G. Sikder, A. K. Dubey, J. Saini, E. Nandy, V. Singhal, V. S. Negi, S. Chattopadhyay and S.K. Prasad

    Gaseous tracking chambers based on the Gas Electron Multiplier (GEM) technology will be used for the first two stations of the Muon Chamber system of the Compressed Baryonic Matter (CBM) experiment at FAIR . Large size trapezoidal modules each having 2D pad-readout with ~2.2k pads were designed and fabricated for data taking in the mCBM (mini-CBM) experiment set-up at the SIS18 facility of GSI as a

    更新日期:2020-10-19
  • Technique for measuring of LIA spot size on target by X-rays propagating in beam backward direction
    J. Instrum. (IF 1.454) Pub Date : 2020-10-18
    P.A. Kolesnikov, V.Yu. Politov, E.S. Li, A.P. Yaskevich, S.A. Kolesnikov, Yu.M. Ekimov, M.A. Malyshev, A.R. Akhmetov, D.V. Petrov, O.A. Nikitin, I.V. Penzin, Yu.A. Trunev, M.G. Atlukhanov, A.V. Burdakov, V.V. Danilov, V.V. Kurkuchekov, S.S. Popov, D.I. Skovorodin and K.I. Zhivankov

    We are propose a technique for measuring of a focal spot size directly during the shot of a radiographic facility based on a linear induction accelerator. The key feature of the proposed method is the penumbral imaging in the direction backward to the electron beam propagation. Diagnostic has been installed in a backward hemisphere of the target chamber of a linear induction accelerator. It consists

    更新日期:2020-10-19
  • A novel polystyrene-based scintillator production process involving additive manufacturing
    J. Instrum. (IF 1.454) Pub Date : 2020-10-18
    S. Berns, A. Boyarintsev, S. Hugon, U. Kose, D. Sgalaberna, A. De Roeck, A. Lebedynskiy, T. Sibilieva and P. Zhmurin

    Plastic scintillator detectors are widely used in particle physics thanks to the very good particle identification, tracking capabilities and time resolution. However, new experimental challenges and the need for enhanced performance require the construction of detector geometries that are complicated using the current production techniques. In this article we propose a new production technique based

    更新日期:2020-10-19
  • Analysis of the particle longitudinal motion during the injection process into the disk loaded traveling wave accelerating structure
    J. Instrum. (IF 1.454) Pub Date : 2020-10-15
    M.V. Arsentyeva, K.N. Berdnikov and A.E. Levichev

    We study longitudinal beam motion of the beam with a nonrelativistic energy during the injection into the disk loaded accelerating structure with traveling wave. Analysis of the particle dynamics is carried out with the help of the Hamiltonian formalism. Condition of the particle capture into the acceleration is derived. Trajectories of the particles in the longitudinal phase space are shown. We also

    更新日期:2020-10-19
  • Evaluation of drinking water radioactivity content and radiological risk assessment: a new methodological approach
    J. Instrum. (IF 1.454) Pub Date : 2020-10-15
    F. Caridi and M. D'Agostino

    The presence of radionuclides in drinking water constitutes a health risk for humans, because the consumption of such water increases the likelihood of incurring cancer. In our laboratory a new methodological approach was developed, in order to evaluate the radioactivity content and to assess the radiological risk, through the calculation of the Indicative Dose (ID) due to ingestion, in the case of

    更新日期:2020-10-19
  • Calibration method of meteorological sensor based on enhanced BP network
    J. Instrum. (IF 1.454) Pub Date : 2020-10-14
    Y.M. Wang, K.B. Jia, P.Y. Liu, W.J. Zhang and J.C. Yang

    Meteorological observation plays an important role in establishing atmospheric theory and improving the accuracy of weather forecasts. Sensors are the foundation and the core in the meteorological observation. Only the accurate calibration of the sensor can ensure the validity of measurement data. In most current methods of sensor calibration, the least squares method is used for calibration which

    更新日期:2020-10-16
  • Beam characterization at NSRL for radiobiological experiments—phase 1
    J. Instrum. (IF 1.454) Pub Date : 2020-10-14
    L. Burigo, T. Gehrke, O. Jäkel, M. Sivertz, T. Olsen, A. Rusek, C. Obcemea and S. Greilich

    An experimental campaign was carried out at the NASA Space Radiation Laboratory to perform an additional, independent dosimetric characterization of the beams of protons, helium and carbon ions for radiobiological experiments. The campaign was undertaken by the request and with the support from the National Cancer Institute, U.S. In this initial phase, the goals were to obtain a first assessment of

    更新日期:2020-10-16
  • Triple-GEM discharge probability studies at CHARM: simulations and experimental results
    J. Instrum. (IF 1.454) Pub Date : 2020-10-14
    M. Abbas, M. Abbrescia, H. Abdalla, A. Abdelalim, S. AbuZeid, A. Agapitos, A. Ahmad, A. Ahmed, W. Ahmed, C. Aimè, I. Asghar, P. Aspell, C. Avila, J. Babbar, Y. Ban, R. Band, S. Bansal, L. Benussi, V. Bhatnagar, M. Bianco, S. Bianco, K. Black, L. Borgonovi, O. Bouhali, A. Braghieri, S. Braibant, S. Butalla, S. Calzaferri, M. Caponero, F. Cassese, N. Cavallo, S. Chauhan, S. Colafranceschi, A. Colaleo

    The CMS muon system in the region with 2.03<|η|<2.82 is characterized by a very harsh radiation environment which can generate hit rates up to 144 kHz/cm 2 and an integrated charge of 8 C/cm 2 over ten years of operation. In order to increase the detector performance and acceptance for physics events including muons, a new muon station (ME0) has been proposed for installation in that region. The technology

    更新日期:2020-10-16
  • The SHiP timing detector based on MRPC
    J. Instrum. (IF 1.454) Pub Date : 2020-10-13
    A. Blanco, F. Clemencio, P. Fonte, C. Franco, N. Leonardo, L. Lopes, C. Loureiro, J. Saraiva and G. Soares

    SHiP (Search for Hidden Particles) is a general-purpose experiment to be installed in a new beam-dump facility at the SPS at CERN to search for hidden particles as predicted by a very large number of recently elaborated models. The proposed experimental apparatus contains, among others, a 50 m 2 Timing Detector, crucial to reject the combinatorial background, with a requirement of a timing precision

    更新日期:2020-10-14
  • Characterization of the SIDDHARTA-2 luminosity monitor
    J. Instrum. (IF 1.454) Pub Date : 2020-10-13
    M. Skurzok, A. Scordo, S. Niedzwiecki, A. Baniahmad, M. Bazzi, D. Bosnar, M. Bragadireanu, M. Carminati, M. Cargnelli, A. Clozza, C. Curceanu, L. De Paolis, R. Del Grande, L. Fabbietti, C. Fiorini, C. Guaraldo, M. Iliescu, M. Iwasaki, P. Levi Sandri, J. Marton, M. Miliucci, P. Moskal, K. Piscicchia, F. Sgaramella, H. Shi, M. Silarski, D.L. Sirghi, F. Sirghi, A. Spallone, M. Tüchler, O. Vazquez Doce

    A luminosity monitor, based on plastic scintillator detectors, has been developed for the SIDDHARTA-2 experiment aiming to perform high precision measurements of kaonic atoms and was installed in 2020 on the DAΦNE e + e − collider at LNF (Laboratori Nazionali di Frascati, INFN). The main goal of this system is to provide the instantaneous and integrated luminosity of the DAΦNE facility by measuring

    更新日期:2020-10-14
  • CMD-3 muon system efficiency
    J. Instrum. (IF 1.454) Pub Date : 2020-10-13
    A.A. Korobov, B.A. Shwartz and A.I. Vorobiov

    The Muon system of the CMD-3 detector is described. This system, aimed at measuring the time and position of muons passing through CMD-3, is the outermost part of the detector and is made of thin plates of plastic scintillators. A measurement of the system efficiency is presented.

    更新日期:2020-10-14
  • Neutron hardness of EJ-276 scintillation material
    J. Instrum. (IF 1.454) Pub Date : 2020-10-13
    S. Mianowski, K. Brylew, A. Dziedzic, K. Grzenda, P. Karpowicz, A. Korgul, M. Krakowiak, R. Prokopowicz, G. Madejowski, Z. Mianowska, M. Moszynski, T. Szczesniak and M. Ziemba

    This paper presents the results of the fast neutron irradiation (E n > 0.5 MeV) of an EJ-276 scintillator performed in the MARIA research reactor with fluence up to 5.3 × 10 15 particles/cm 2 . In our work, four samples with size ##IMG## [https://ej.iop.org/icons/Entities/phi.gif] {phi} 25.4 mm × 5 mm were tested. The changes in the light yield, emission and absorption spectrum and neutron/gamma discrimination

    更新日期:2020-10-14
  • Study on the TB and non-TB diagnosis using two-step deep learning-based binary classifier
    J. Instrum. (IF 1.454) Pub Date : 2020-10-13
    S.H. Yoo, H. Geng, T.L. Chiu, S.K. Yu, D.C. Cho, J. Heo, M.S. Choi, I.H. Choi, C.V. Cung, N.V. Nhung and B.J. Min

    A deep learning-based binary classifier was proposed to diagnose tuberculosis (TB) and non-TB disease using a chest X-ray radiograph. The proposed classifier comprised two-step binary decision trees, each trained by a deep learning model with convolution neural network (CNN) based on the PyTorch frame. Normal and abnormal images of chest X-ray was classified in the first step. The abnormal images were

    更新日期:2020-10-14
  • Particle identification using Boosted Decision Trees in the Semi-Digital Hadronic Calorimeter prototype
    J. Instrum. (IF 1.454) Pub Date : 2020-10-12
    D. Boumediene, A. Pingault, M. Tytgat, B. Bilki, D. Northacker, Y. Onel, G. Cho, D.-W. Kim, S.C. Lee, W. Park, S. Vallecorsa, Y. Deguchi, K. Kawagoe, Y. Miura, R. Mori, I. Sekiya, T. Suehara, T. Yoshioka, L. Caponetto, C. Combaret, R. Ete, G. Garillot, G. Grenier, J.-C. Ianigro, T. Kurca, I. Laktineh, B. Liu, B. Li, N. Lumb, H. Mathez, L. Mirabito, A. Steen, E. Calvo Alamillo, M.C. Fouz, J. Marin,

    The CALICE Semi-Digital Hadronic CALorimeter (SDHCAL) prototype using Glass Resistive Plate Chambers as a sensitive medium is the first technological prototype of a family of high-granularity calorimeters developed by the CALICE collaboration to equip the experiments of future leptonic colliders. It was exposed to beams of hadrons, electrons and muons several times in the CERN PS and SPS beamlines

    更新日期:2020-10-13
  • Belle II electromagnetic calorimeter and its performance during early SuperKEKB operation
    J. Instrum. (IF 1.454) Pub Date : 2020-10-12
    K. Miyabayashi

    The Belle II experiment at the SuperKEKB accelerator is the new-generation intensity frontier electron-positron colliding beam experiment. The electromagnetic calorimeter consisting of 8736 CsI(Tl) crystals with their PIN-photodiode readout, has been inherited from the Belle experiment. In order to achieve high rate capability and immunity against beam background, the electronics has been upgraded

    更新日期:2020-10-13
  • Method for in situ measuring the thickness of a lithium layer
    J. Instrum. (IF 1.454) Pub Date : 2020-10-11
    D. Kasatov, Ia. Kolesnikov, A. Koshkarev, A. Makarov, E. Sokolova, I. Shchudlo and S. Taskaev

    This work describes a new method for in situ measuring the lithium layer thickness. The method is based on the registration of the yield of 478 keV gamma-quanta of 7 Li(p,p'γ) 7 Li reaction. The results of measuring the radial distribution of the thickness of a lithium layer thermally deposited in vacuum on a cooled copper substrate are presented. The possibility of using this method for certification

    更新日期:2020-10-12
  • A two-in-one gamma-ray spectrometer and random pulse generator based on FPGA
    J. Instrum. (IF 1.454) Pub Date : 2020-10-11
    J.J. Ge, L.H. Cong and H. Liang

    The gamma-ray spectrometer (GRS) is a powerful tool to acquire energy spectra. For the traditional analog GRS based on commercial modules and the digital GRS based on ultra-fast digitization, it is difficult to meet the requirements of high resolution and high throughput simultaneously, and the energy spectrum cannot be obtained in real-time. Besides, energy spectra experiments require the use of radioactive

    更新日期:2020-10-12
  • The PADME experiment at LNF
    J. Instrum. (IF 1.454) Pub Date : 2020-10-11
    D. Domenici

    The Positron Annihilation into Dark Matter Experiment (PADME) aims to search for the production of a dark photon in the process e + e − → A 'γ. It will use the 550 MeV positron beam provided by the DAΦNE LINAC impinging on a thin target. In case of annihilation, the accompanying ordinary photon is detected by the electromagnetic calorimeter regardless of the dark photon decay products. A single kinematic

    更新日期:2020-10-12
  • A semi-analytical energy response model for low-energy events in JUNO
    J. Instrum. (IF 1.454) Pub Date : 2020-10-11
    P. Kampmann, Y. Cheng and L. Ludhova

    The Jiangmen Underground Neutrino Observatory (JUNO) is a next-generation neutrino experiment under construction in China expected to be completed in 2022. As the main goal it aims to determine the neutrino mass ordering with 3–4 σ significance using a 20 kton liquid scintillator detector. It will measure the oscillated energy spectrum of electron anti-neutrinos from two nuclear power plants at about

    更新日期:2020-10-12
  • FARICH detector beam test results
    J. Instrum. (IF 1.454) Pub Date : 2020-10-08
    A.Yu. Barnyakov, M.Yu. Barnyakov, V.S. Boborovnikov, A.R. Buzykaev, A.V. Bykov, A.F. Danilyuk, P.V. Kasyanenko, A.A. Katcin, S.A. Kononov, E.A. Kravchenko, I.A. Kuyanov, A.P. Onuchin, I.V. Ovtin, N.A. Podgornov, V.V. Porosev, A.S. Shalygin, L.I. Shekhtman and A.A. Talyshev

    The excellent particle identification (PID) system is needed for the successful execution of the broad experimental program at future Super C-τ Factory (SCTF) in Novosibirsk. The main requirements for the PID system are the following: good π/K-separation in whole operational momentum range and good μ/π-separation in the momentum range from 0.4 up to 1.2 GeV/ c . The RICH detector based on focusing

    更新日期:2020-10-12
  • SiPM readout prototype board performance
    J. Instrum. (IF 1.454) Pub Date : 2020-10-07
    A.N. Kozyrev, A.A. Ruban, D. Shaukavy, G.V. Fedotovich, D.N. Grigoriev and L.B. Epshteyn

    Currently, some upcoming experiments plan to use the muon tagging systems based on the fast plastic scintillators with the readout via the wavelength shifter fibers and SiPM as the photo detector. The goal of these systems is to detect cosmic muons in the energy range from 0.1 to 1 GeV with high efficiency under high background counting rate. The paper describes the design of the custom electronics

    更新日期:2020-10-12
  • Development of advanced Thomson spectrometers for nuclear fusion experiments initiated by laser
    J. Instrum. (IF 1.454) Pub Date : 2020-10-07
    G. Di Giorgio, F. Consoli, R. De Angelis, P. Andreoli, M. Cipriani, G. Cristofari, A. Bonasera, M. Salvadori and J. Sura

    Thomson Spectrometers are devices capable to separate the several particle species (with distinct charge-to-mass ratio and energy) produced by the different regimes of laser-matter experiments. In this work we describe the development of advanced spectrometers for low and medium energy particles. In particular, they are suitable for protons in the 5 keV–2 MeV and 100 keV–10 MeV energy ranges, respectively

    更新日期:2020-10-12
  • On a crystal assisted positron source by 10 ÷ 5 MeV electrons
    J. Instrum. (IF 1.454) Pub Date : 2020-10-07
    S.V. Abdrashitov, Yu.P. Kunashenko, Yu.L. Pivovarov and S.B. Dabagov

    The results of recent studies for the positron production in the crystal assisted radiator-converter approach ("hybrid solution") are brief analysed for 10 ÷ 50 MeV electrons. Computer simulations have been performed for both coherent and incoherent bremsstrahlung in Si and Ge crystal radiators that successfully irradiate the W amorphous converter to release the electron-positron pairs. The positron

    更新日期:2020-10-12
  • Event reconstruction for KM3NeT/ORCA using convolutional neural networks
    J. Instrum. (IF 1.454) Pub Date : 2020-10-07
    S. Aiello, A. Albert, S. Alves Garre, Z. Aly, F. Ameli, M. Andre, G. Androulakis, M. Anghinolfi, M. Anguita, G. Anton, M. Ardid, J. Aublin, C. Bagatelas, G. Barbarino, B. Baret, S. Basegmez du Pree, M. Bendahman, E. Berbee, A.M. van den Berg, V. Bertin, S. Biagi, A. Biagioni, M. Bissinger, M. Boettcher, J. Boumaaza, M. Bouta, M. Bouwhuis, C. Bozza, H. Brânzaş, R. Bruijn, J. Brunner, E. Buis, R. Buompane

    The KM3NeT research infrastructure is currently under construction at two locations in the Mediterranean Sea. The KM3NeT/ORCA water-Cherenkov neutrino detector off the French coast will instrument several megatons of seawater with photosensors. Its main objective is the determination of the neutrino mass ordering. This work aims at demonstrating the general applicability of deep convolutional neural

    更新日期:2020-10-12
  • A new approach for CMS RPC current monitoring using Machine Learning techniques
    J. Instrum. (IF 1.454) Pub Date : 2020-10-06
    A. Samalan, M. Tytgat, N. Zaganidis, G.A. Alves, F. Marujo, F. Torres Da Silva De Araujo, E.M. Da Costa, D. De Jesus Damiao, H. Nogima, A. Santoro, S. Fonseca De Souza, A. Aleksandrov, R. Hadjiiska, P. Iaydjiev, M. Rodozov, M. Shopova, G. Sultanov, M. Bonchev, A. Dimitrov, L. Litov, B. Pavlov, P. Petkov, A. Petrov, S.J. Qian, C. Bernal, A. Cabrera, J. Fraga, A. Sarkar, S. Elsayed, Y. Assran, M. El

    The CMS experiment has 1054 RPCs in its muon system. Monitoring their currents is the first essential step towards maintaining the stability of the CMS RPC detector performance. The current depends on several parameters such as applied voltage, luminosity, environmental conditions, etc. Knowing the influence of these parameters on the RPC current is essential for the correct interpretation of its instabilities

    更新日期:2020-10-07
  • Study on the FPGA-based Temperature Compensation for the SiPM of CEPC ECAL Prototype
    J. Instrum. (IF 1.454) Pub Date : 2020-10-06
    A. Zhou, Z. Shen, S. Zhao, Y. Shi, C. Feng and S. Liu

    Silicon photomultiplier (SiPM), with the advantages of high gain, low noise, small volumn, is used as the photoelectric converter in the detection unit of the electromagnetic calorimeter (ECAL) prototype of the Circular Electron Positron Collider (CEPC). However, the ambient temperature has influences on the SiPM gain, which will therefore affect the energy resolution of the calorimeter. To solve this

    更新日期:2020-10-07
  • Experimental study of Cherenkov radiation component in LYSO(Ce) crystals
    J. Instrum. (IF 1.454) Pub Date : 2020-10-06
    A.Y. Barnyakov, M.Y. Barnyakov, V.S. Bobrovnikov, G.S. Chizhik, P.V. Kasyanenko, A.A. Katcin, V.A. Kladov, S.A. Kononov, V.N. Kudryavtsev, I.A. Kuyanov, I.V. Ovtin, V.V Porosev, V.G. Prisekin, V.A. Rodyakin, L.I. Shekhtman and A.A. Talyshev

    In this paper we investigated Cherenkov radiation component influence on the time of charged particle detection in LYSO(Ce) crystals. Description of the experiment setup and Monte Carlo simulation scheme are given. The scintillation and Cherenkov radiation processes in LYSO(Ce) crystal were simulated and studied experimentally with electron beam at Budker Institute of Nuclear Physics beam test facilities

    更新日期:2020-10-07
  • RPC system in the CMS Level-1 Muon Trigger
    J. Instrum. (IF 1.454) Pub Date : 2020-10-05
    A. Samalan, M. Tytgat, N. Zaganidis, G.A. Alves, F. Marujo, F. Torres Da Silva De Araujo, E.M. Da Costa, D. De Jesus Damiao, H. Nogima, A. Santoro, S. Fonseca De Souza, A. Aleksandrov, R. Hadjiiska, P. Iaydjiev, M. Rodozov, M. Shopova, G. Sultanov, M. Bonchev, A. Dimitrov, L. Litov, B. Pavlov, P. Petkov, A. Petrov, S.J. Qian, P. Cao, H. Kou, Z. Liu, J. Song, J. Zhao, C. Bernal, A. Cabrera, J. Fraga

    The CMS experiment implements a two-level triggering system composed of Level-1, instrumented by custom-design hardware boards, and a software High Level Trigger. To cope with the more challenging luminosity conditions, a new Level-1 architecture has been deployed during run II. This new architecture exploits in a better way the redundancy and complementarity of the three muon subsystems: Cathode Strip

    更新日期:2020-10-06
  • Development of a SPIROC2E-based scintillator test platform for CEPC AHCAL prototype
    J. Instrum. (IF 1.454) Pub Date : 2020-10-04
    H. Liu, Z. Shen, Y. Niu, C. Feng and S. Liu

    As a part of the calorimetry system of Circular Electron Positron Collider (CEPC), the analog hadron calorimeter (AHCAL) uses scintillator tiles and silicon photomultipliers (SiPMs) as sensitive medium. The light yield uniformity of scintillators is essential for energy linearity and resolution of the calorimeter. This paper describes an automatic test platform for measuring the light yield of up to

    更新日期:2020-10-05
  • ATLAS Forward Proton Time-of-Flight Detector: LHC Run2 performance and experiences
    J. Instrum. (IF 1.454) Pub Date : 2020-10-04
    T. Sykora

    The performance of the ATLAS Forward Proton Time-of-Flight (ToF) Cherenkov detector is studied using the ATLAS data collected in 2017 during the LHC Run2. The detailed analysis of the results, including detector efficiency and time resolution of the ToF detector, is discussed. The detector construction and its expected performance based on beam test results are briefly summarized first. Operational

    更新日期:2020-10-05
  • Characterisation and performance of the PADME electromagnetic calorimeter
    J. Instrum. (IF 1.454) Pub Date : 2020-10-04
    P. Albicocco, J. Alexander, F. Bossi, P. Branchini, B. Buonomo, C. Capoccia, E. Capitolo, G. Chiodini, A.P. Caricato, R. de Sangro, C. Di Giulio, D. Domenici, F. Ferrarotto, G. Finocchiaro, S. Fiore, L.G. Foggetta, A. Frankenthal, G. Georgiev, A. Ghigo, F. Giacchino, P. Gianotti, S. Ivanov, V. Kozhuharov, E. Leonardi, B. Liberti, E. Long, M. Martino, I. Oceano, F. Oliva, G.C. Organtini, G. Piperno

    The PADME experiment at the LNF Beam Test Facility searches for dark photons produced in the annihilation of positrons with the electrons of a fixed target. The strategy is to look for the reaction e + + e − → γ+ A ', where A ' is the dark photon, which cannot be observed directly or via its decay products. The electromagnetic calorimeter plays a key role in the experiment by measuring the energy and

    更新日期:2020-10-05
  • The CMD-3 detector's Final Decision Block
    J. Instrum. (IF 1.454) Pub Date : 2020-10-04
    A.O. Gorkovenko, L.B. Epshteyn, Y.V. Yudin and A.A Talyshev

    In 2017, the luminosity at the VEPP-2000 collider at the Budker Institute of Nuclear Physics SB RAS, Novosibirsk, was increased. In this regard, it was decided to upgrade the trigger system of the CMD-3 detector. For this, the development of a device called the Final Decision Block was started. The task of this unit is to generate the final decision on recording the current event in the detector based

    更新日期:2020-10-05
  • Radial Matching Section of RFQ revisited
    J. Instrum. (IF 1.454) Pub Date : 2020-10-01
    N. Mehrotra and B.K. Nayak

    Radial Matching Section (RMS) which is the crucial part of Radio Frequency Quadru\-pole (RFQ) Linac matches a stationary input beam to the time-varying focusing of RFQ. In this paper, the theory of RMS has been examined comprehensively from the point of view of the continuity of the potential function and the electric field. A methodology has been developed to include higher order term in the RMS potential

    更新日期:2020-10-02
  • Effect of deep gain layer and Carbon infusion on LGAD radiation hardness
    J. Instrum. (IF 1.454) Pub Date : 2020-10-01
    R. Padilla, C. Labitan, Z. Galloway, C. Gee, S.M. Mazza, F. McKinney-Martinez, H.F.-W. Sadrozinski, A. Seiden, B. Schumm, M. Wilder, Y. Zhao, H. Ren, Y. Jin, M. Lockerby, V. Cindro, G. Kramberger, I. Mandiz, M. Mikuz, M. Zavrtanik, R. Arcidiacono, N. Cartiglia, M. Ferrero, M. Mandurrino, V. Sola and A. Staiano

    The properties of 50 μm thick Low Gain Avalanche Diode (LGAD) detectors manufactured by Hamamatsu photonics (HPK) and Fondazione Bruno Kessler (FBK) were tested before and after irradiation with neutrons. Their performance were measured in charge collection studies using β-particles from a 90Sr source and in capacitance-voltage scans (C-V) to determine the bias to deplete the gain layer. Carbon infusion

    更新日期:2020-10-02
  • Operation of the ATLAS trigger system in Run 2
    J. Instrum. (IF 1.454) Pub Date : 2020-10-01
    The ATLAS collaboration

    The ATLAS experiment at the Large Hadron Collider employs a two-level trigger system to record data at an average rate of 1 kHz from physics collisions, starting from an initial bunch crossing rate of 40 MHz. During the LHC Run 2 (2015–2018), the ATLAS trigger system operated successfully with excellent performance and flexibility by adapting to the various run conditions encountered and has been vital

    更新日期:2020-10-02
  • Design and implementation of detector control system for muon forward tracker at ALICE
    J. Instrum. (IF 1.454) Pub Date : 2020-10-01
    K. Yamakawa, A. Augustinus, G. Batigne, P. Chochula, M. Oya, S. Panebianco, O. Pinazza, K. Shigaki, R. Tieulent and Y. Yamaguchi

    ALICE is the experiment at the CERN LHC devoted to study heavy-ion collisions. An upgrade program of the ALICE detector is ongoing toward the LHC Run 3 starting in 2022 together with the upgrade of the data acquisition system and the detector control system (DCS) . One of the main projects of the current ALICE upgrade program is the addition of the muon forward tracker (MFT), a new silicon pixel detector

    更新日期:2020-10-02
  • Hydrodynamics and transport processes in porous materials under terawatt laser irradiation
    J. Instrum. (IF 1.454) Pub Date : 2020-10-01
    M. Cipriani, S.Yu. Gus'kov, F. Consoli, R. De Angelis, A. A. Rupasov, P. Andreoli, G. Cristofari and G. Di Giorgio

    Porous materials have many applications for laser-matter interaction experiments related to inertial confinement fusion. Obtaining new knowledge about the properties of the laser-produced plasma of porous media is a challenging task. In this work we review the development and the validation of the MULTI-FM code, by discussing the theoretical model on which the code is based, its implementation and

    更新日期:2020-10-02
  • Reconstruction of signal amplitudes in the CMS electromagnetic calorimeter in the presence of overlapping proton-proton interactions
    J. Instrum. (IF 1.454) Pub Date : 2020-09-30
    A.M. Sirunyan, A. Tumasyan, W. Adam, F. Ambrogi, T. Bergauer, M. Dragicevic, J. Erö, A. Escalante Del Valle, R. Frühwirth, M. Jeitler, N. Krammer, L. Lechner, D. Liko, T. Madlener, I. Mikulec, F.M. Pitters, N. Rad, J. Schieck, R. Schöfbeck, M. Spanring, S. Templ, W. Waltenberger, C.-E. Wulz, M. Zarucki, V. Chekhovsky, A. Litomin, V. Makarenko, J. Suarez Gonzalez, M.R. Darwish, E.A. De Wolf, D. Di Croce

    A template fitting technique for reconstructing the amplitude of signals produced by the lead tungstate crystals of the CMS electromagnetic calorimeter is described. This novel approach is designed to suppress the contribution to the signal of the increased number of out-of-time interactions per beam crossing following the reduction of the accelerator bunch spacing from 50 to 25 ns at the start of

    更新日期:2020-10-02
  • FAIR status and the PANDA experiment
    J. Instrum. (IF 1.454) Pub Date : 2020-09-30
    A. Belias

    The international accelerator Facility for Antiproton and Ion Research in Europe (FAIR) is the next generation accelerator complex for fundamental and applied research with antiproton and ion beams. FAIR will provide worldwide unique facilities enabling a wide spectrum of unprecedented forefront research in hadron and nuclear physics, in atomic physics and nuclear astrophysics as well as in applied

    更新日期:2020-10-02
  • Stability and detection performance of a GEM-based Optical Readout TPC with He/CF 4 gas mixtures
    J. Instrum. (IF 1.454) Pub Date : 2020-09-30
    E. Baracchini, L. Benussi, S. Bianco, C. Capoccia, M. Caponero, G. Cavoto, A. Cortez, I. A. Costa, E. Di Marco, G. D'Imperio, G. Dho, F. Iacoangeli, G. Maccarrone, M. Marafini, G. Mazzitelli, A. Messina, R. A. Nobrega, A. Orlandi, E. Paoletti, L. Passamonti, F. Petrucci, D. Piccolo, D. Pierluigi, D. Pinci, F. Renga, F. Rosatelli, A. Russo, G. Saviano and S. Tomassini

    The performance and long term stability of an optically readout Time Projection Chamber with an electron amplification structure based on three Gas Electron Multipliers was studied. He/CF 4 based gas mixtures were used in two different proportions (60/40 and 70/30) in a CYGNO prototype with 7 litres sensitive volume. With electrical configurations providing very similar electron gains, an almost full

    更新日期:2020-10-02
  • Assessment of sensitivity improvement for Time-Of-Flight schemes in experiments with high intensity lasers.
    J. Instrum. (IF 1.454) Pub Date : 2020-09-30
    M. Salvadori, F. Consoli, C. Verona, M. Cipriani, P. L. Andreoli, G. Cristofari, R. De Angelis, G. Di Giorgio, D. Giulietti, M.P. Anania, F. Bisesto, G. Costa, M. Ferrario, M. Galletti, R. Pompili, A. Zigler, P. Antici and M. Migliorati

    In the last decades the development of laser-driven acceleration and inertial fusion fields of research required the commissioning of laser systems with increasing power and repetion rate. This was accompained by a sensible growth of the produced electromagnetic pulses (EMP) inside the experimental chamber and on its surrounding, hindering the employment of any electronic device. Hence, a lot of effort

    更新日期:2020-10-02
  • Study of charging up effect in a triple GEM detector
    J. Instrum. (IF 1.454) Pub Date : 2020-09-29
    S. Chatterjee, A. Sen, S. Roy, K. Nivedita G, A. Paul, S. Das and S. Biswas

    The advancement of Micro Pattern Gaseous Detector technology offers us different kinds of detectors with good spatial resolution and high rate capability and the Gas Electron Multiplier (GEM) detector is one of them. Typically GEM is made up of a thin polyimide foil having a thickness of 50 micrometers with 5 micrometers copper cladding on top and bottom sides. The presence of polyimide changes the

    更新日期:2020-09-30
  • Probing the angular and polarization reconstruction of the ARIANNA detector at the South Pole
    J. Instrum. (IF 1.454) Pub Date : 2020-09-29
    A. Anker, S.W. Barwick, H. Bernhoff, D.Z. Besson, N. Bingefors, D. García-Fernández, G. Gaswint, C. Glaser, A. Hallgren, J.C. Hanson, S.R. Klein, S.A. Kleinfelder, R. Lahmann, U. Latif, Z.S. Meyers, J. Nam, A. Novikov, A. Nelles, M.P. Paul, C. Persichilli, I. Plaisier, J. Tatar, S.-H. Wang and C. Welling

    The sources of ultra-high energy (UHE) cosmic rays, which can have energies up to 10 20 eV, remain a mystery. UHE neutrinos may provide important clues to understanding the nature of cosmic-ray sources. ARIANNA aims to detect UHE neutrinos via radio (Askaryan) emission from particle showers when a neutrino interacts with ice, which is an efficient method for neutrinos with energies between 10 16 eV

    更新日期:2020-09-30
  • Measurements of an AC-LGAD strip sensor with a 120 GeV proton beam
    J. Instrum. (IF 1.454) Pub Date : 2020-09-29
    A. Apresyan, W. Chen, G. D'Amen, K.F. Di Petrillo, G. Giacomini, R.E. Heller, H. Lee, C.-S. Moon and A. Tricoli

    The development of detectors that provide high resolution in four dimensions has attracted wide-spread interest in the scientific community for several applications in high-energy physics, nuclear physics, medical imaging, mass spectroscopy as well as quantum information. LGAD silicon sensors with finely segmented AC-coupled electrodes can provide precise spatial and timing measurements of incident

    更新日期:2020-09-30
  • Performance of the continuous ions suppression TPC prorotype for circular collider
    J. Instrum. (IF 1.454) Pub Date : 2020-09-29
    Y. Chang, H. Qi, Z. Yuan, J. Zhang, Q. Ouyang, Y. Chen, Y. Cai, Y. Li, Z. Deng, H. Gong and X. Yu

    The circumference of CEPC (Circular Electron Positron Collider) is 100 km, with two interaction points available for exploring different detector design scenarios and technologies. Two common RF stations are deployed for the Higgs operation, which result in 286 beam bunches evenly distributed over a half ring. While for W and Z operations, independent RF cavities are used, 5220 and 10900 bunches are

    更新日期:2020-09-30
  • Comparison of single crystal diamond TOF detectors in planar and transverse configuration
    J. Instrum. (IF 1.454) Pub Date : 2020-09-29
    C. Verona, M. Marinelli, S. Palomba, G. Verona-Rinati, M. Salvadori, F. Consoli, M. Cipriani, P. Antici, M. Migliorati, F. Bisesto and R. Pompili

    Single crystal diamond detectors are widely employed in laser-induced plasma experiments to retrieve information about particles generated from the interaction. In particular, diamonds are used as Time of Flight (TOF) detectors featured by good sensitivity, high radiation hardness and fast response time. In this work, we provide a detailed characterization of two different types of electrodes configuration

    更新日期:2020-09-30
  • Measurement results on capacitively coupled particle detector with PHOTON readout chip
    J. Instrum. (IF 1.454) Pub Date : 2020-09-29
    H. Zhang, F. Ehrler, R. Schimassek and I. Peric

    A sensor chip for a capacitively coupled pixel detector (CCPD53) has been designed and produced in a 180 nm high voltage CMOS (HVCMOS) technology on a high resistivity wafer with deep p-well option. Capacitively coupled pixel detectors are a simple and low-cost alternative to classical hybrid detectors. They rely on capacitive signal transmission between the sensor chip and the readout chip. A pixel

    更新日期:2020-09-30
  • Design and measurement of Trans-PET basic detector module II using 6נ6 SiPM array for small-animal PET
    J. Instrum. (IF 1.454) Pub Date : 2020-09-29
    M. Niu, C. Hua, T. Liu, Y. Yang, Q. Xie and P. Xiao

    Silicon photomultiplier (SiPM) coupled scintillation detectors, are considered as promising tools for basic design of imaging instrumentation for the next generation PET, PET/MRI, SPECT and autoradiography scanners. The precise technical knowledge is inadequate, and still some challenges need to be addressed in order to successfully implement the SiPM technology in high resolution PET systems. Firstly

    更新日期:2020-09-30
  • Small-strip thin gap chambers for the muon spectrometer upgrade of the ATLAS experiment
    J. Instrum. (IF 1.454) Pub Date : 2020-09-28
    D. Pudzha

    The instantaneous luminosity of the Large Hadron Collider at CERN will be increased by about a factor of five with respect to the design value after the extensive upgrade program over the coming decade. In order to cope with the increasing luminosity, the ATLAS experiment is being upgraded as well. The largest phase-1 upgrade project for the ATLAS Muon System is the replacement of the present first

    更新日期:2020-09-29
  • Fringe modelling and Photoelastic stress Measurement method in tetragonal PWO observed in the plane normal to a crystallographic a-axis
    J. Instrum. (IF 1.454) Pub Date : 2020-09-28
    P.P. Natali, L. Montalto, L. Scalise, F. Davì, N. Paone and D. Rinaldi

    Scintillator crystals like the tetragonal PbWO 4 (PWO) are largely used in calorimeters, for instance the CMS at CERN and in the PANDA calorimeter project. The performances of those calorimeters are directly linked to crystals homogeneity and quality, which can be assessed using indicators such as residual stress state condition. Since it is fundamental to develop and refine new mathematical models

    更新日期:2020-09-29
  • MPGD-based photon detectors for the upgrade of COMPASS RICH-1 and beyond
    J. Instrum. (IF 1.454) Pub Date : 2020-09-28
    J. Agarwala, M. Alexeev, C.D.R. Azevedo, F. Bradamante, A. Bressan, M. Büchele, C. Chatterjee, M. Chiosso, A. Cicuttin, P. Ciliberti, M.L. Crespo, S. Dalla Torre, S. Dasgupta, O. Denisov, M. Finger, M. Finger Jr., H. Fischer, L. García Ordóñez, M. Gregori, G. Hamar, F. Herrmann, S. Levorato, A. Martin, G. Menon, D. Panzieri, G. Sbrizzai, S. Schopferer, M. Slunecka, M. Sulc, F. Tessarotto, J.F.C.A.

    COMPASS is a fixed target experiment at CERN SPS aimed to study hadron structure and spectroscopy. Hadron identification in the momentum range between 3 and 55 GeV/c is provided by a large gaseous Ring Imaging Cherenkov Counter, RICH-1. To cope with the challenges imposed by the new physics program of COMPASS, RICH-1 has been upgraded by replacing four MWPC-based photon detectors with newly developed

    更新日期:2020-09-29
  • Investigation of the energy spectrum and chemical composition of primary cosmic rays in 1–100 PeV energy range with a UAV-borne detector
    J. Instrum. (IF 1.454) Pub Date : 2020-09-27
    D. Chernov, E. Bonvech, M. Finger Jr., M. Finger, V. Galkin, V. Ivanov, D. Podgrudkov, T. Roganova and I. Vaiman

    A new project is developed with the implementation of a relatively new method of studying primary cosmic rays—the detection of reflected from the snow surface optical Vavilov-Cherenkov radiation from extensive air showers. The aim of the new project is to study the cosmic ray mass composition in the energy range of 1–100 PeV. Silicon photomultipliers are planned to be used as the main photosensitive

    更新日期:2020-09-28
  • Effect of electrode coat's surface resistivity of Resistive Plate Chamber on the space dispersion of induced charge
    J. Instrum. (IF 1.454) Pub Date : 2020-09-27
    S.H. Thoker, B. Satyanarayana, W. Bari, R.R. Shinde and G. Majumder

    Resistive Plate Chamber (RPC) is a parallel plate gaseous detector built using electrodes of high volume resistivity. Operation and performance of the RPCs crucially depends upon the conductive coating on the outer side of the electrodes. Therefore, it is imperative to study in detail the effect of the surface resistivity of the electrodes' coating on RPC characteristics and performance. In this report

    更新日期:2020-09-28
  • Development of a novel wide-angle gamma-ray imaging air Cherenkov telescope with SiPM-based camera for the TAIGA hybrid installation
    J. Instrum. (IF 1.454) Pub Date : 2020-09-27
    D. Chernov, I. Astapov, P. Bezyazeekov, E. Bonvech, A. Borodin, M. Brueckner, N. Budnev, D. Chernukh, A. Chiavassa, A. Dyachok, O. Fedorov, A. Gafarov, A. Garmash, V. Grebenyuk, O. Gress, T. Gress, O. Grishin, A. Grinyuk, D. Horns, A. Ivanova, N. Kalmykov, Y. Kazarina, V. Kindin, S. Kiryuhin, R. Kokoulin, K. Kompaniets, E. Korosteleva, V. Kozhin, E. Kravchenko, A. Krykov, L. Kuzmichev, A. Lagutin,

    The TAIGA complex-detector is designed to study gamma and cosmic rays in the energy range above 30 TeV. We are developing a novel wide-angle imaging air Cherenkov telescope with a SiPM based camera with a field of view of 15–20 o and an aperture of around 1 m 2 . In this report we present the design of the telescope imaging camera (optical and data acquisition systems), based on 1000–1200 SiPMs. The

    更新日期:2020-09-28
  • Beam dynamics design and error study of BISOL deuteron driver linac
    J. Instrum. (IF 1.454) Pub Date : 2020-09-27
    H.P. Li, Z. Wang, Y.R. Lu, S. Wang, K. Zhu, F. Zhu, S.X. Peng, Z.Y. Guo, Q.Y. Tan and S. Liu

    The high intensity deuteron linac, one of the drivers of BISOL, aims to accelerate a continuous wave (cw) deuteron beam up to 40 MeV with a beam current of 20 mA, which can also be operated independently as the Multi-Aimed Intense Neutron Source (MAINS). As the high beam power and beam current, high reliability and strict beam loss are demand for the deuteron driver linac. The beam dynamics design

    更新日期:2020-09-28
  • Particle identification algorithms for the PANDA Barrel DIRC
    J. Instrum. (IF 1.454) Pub Date : 2020-09-24
    A. Ali, A. Belias, R. Dzhygadlo, A. Gerhardt, M. Krebs, D. Lehmann, K. Peters, G. Schepers, C. Schwarz, J. Schwiening, M. Traxler, L. Schmitt, M. Böhm, A. Lehmann, M. Pfaffinger, S. Stelter, M. Düren, E. Etzelmüller, K. Föhl, A. Hayrapetyan, I. Köseoglu, K. Kreutzfeld, M. Schmidt, T. Wasem, C. Sfienti, A. Barnyakov, K. Beloborodov, V. Blinov, S. Kononov, E. Kravchenko and I. Kuyanov

    The PANDA experiment at the international accelerator Facility for Antiproton and Ion Research in Europe (FAIR) near GSI, Darmstadt, Germany will address fundamental questions of hadron physics. Excellent particle identification is required to achieve the PANDA physics goals. Hadronic particle identification (PID) in the barrel region of PANDA target spectrometer will be delivered by a fast focusing

    更新日期:2020-09-25
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