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2022-12-06
06:31
The surface Resistive Plate Counter: An RPC based on resistive MPGD technology / Bencivenni, G (Frascati) ; De Oliveira, R (CERN) ; Felici, G (Frascati) ; Gatta, M (Frascati) ; Giovannetti, M (Frascati ; Rome U., Tor Vergata) ; Morello, G (Frascati) ; Papalino, G (Frascati) ; Poli Lener, M (Frascati)
The surface Resistive Plate Counter (sRPC) is a revolutionary RPC based on surface resistive electrodes realized with Diamond-Like-Carbon sputtered on Apical® foil. Exploiting high granularity current evacuation schemes developed for resistive MPGD and using electrodes with low surface resistivity (down to ∼ 100 MΩ∕□), sRPCs standing particle fluxes up to several hundreds kHz/cm2 should be easily developed. [...]
2023 - 3 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1046 (2023) 167728
In : 15th Pisa Meeting on Advanced Detectors, La Biodola - Isola D'elba, It, 22 - 28 May 2022, pp.167728

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2022-12-06
06:31
Performance of a resistive micro-well detector with capacitive-sharing strip anode readout / Gnanvo, Kondo (Virginia U.) ; Liyanage, Nilanga (Virginia U.) ; Mehl, Bertrand (CERN) ; de Oliveira, Rui (CERN)
The present study is carried out to demonstrate a new type of high-performance readout structure with low readout channel count developed for large-area micro pattern gaseous detectors. The structure exploits capacitive coupling between a vertical stack of 5μm thick copper pad layers sandwiched between 50μm thick polyimide foils to simultaneously transfer and spread the avalanche charges from the gaseous detector’s amplification structure to several strips or pads in the anode readout plane. [...]
2023 - 16 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1047 (2023) 167782

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2022-12-06
06:31
Geodetic deformation measurement and analysis of the ATLAS experimental cavern at CERN / Niewiem, W (CERN) ; Mergelkuhl, D (CERN) ; Gayde, J C (CERN)
Caverns for large physics detectors, such as the one for the Large Hadron Collider experiments, sit nearly 100 m underground and measure several tens of meters in length, width and height. The deformation of the cavern base slab over decades has a direct influence on the relative alignment of detectors with respect to the accelerator. [...]
2022 - 20 p. - Published in : JINST 17 (2022) P11041 Fulltext: PDF;

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2022-12-06
06:31
Systematic investigation of critical charge limits in Thick GEMs / Gasik, P (Darmstadt, GSI ; FAIR, Darmstadt) ; Lautner, L (CERN ; Munich, Tech. U.) ; Fabbietti, L (Munich, Tech. U.) ; Fribert, H (Munich, Tech. U.) ; Klemenz, T (Munich, Tech. U.) ; Mathis, A (Munich, Tech. U.) ; Ulukutlu, B (Munich, Tech. U.) ; Waldmann, T (Munich, Tech. U.)
We present discharge probability studies performed with a single Thick Gas Electron Multiplier (THGEM) irradiated with alpha particles in Ar-CO$_2$ and Ne-CO$_2$ mixtures. We observe a clear dependency of the discharge stability on the noble gas and quencher content pointing to lighter gases to be more stable against the development of streamer discharges. [...]
arXiv:2204.02853.- 2023 - 9 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1047 (2023) 167730 Fulltext: 2204.02853 - PDF; Publication - PDF;

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2022-12-06
06:31
Circular orbits of test particles interacting with massless linear scalar field of the naked singularity / Stashko, O S (Frankfurt U., FIAS ; Goethe U., Frankfurt (main) ; Taras Shevchenko U. ; CERN) ; Zhdanov, V I (Taras Shevchenko U. ; Kiev Polytechnic Inst.)
We study effects of the particles coupling with scalar field (SF) on the distribution of stable circular orbits (SCO) around the naked singularity described by the well-known Fisher-Janis-Newman-Winicour solution. The power-law and exponential models of the particle--SF interaction are analyzed. [...]
arXiv:2209.00160.- 2022 - 9 p. - Published in : Phys. Rev. D 106 (2022) 104049 Fulltext: 2209.00160 - PDF; PhysRevD.106.104049 - PDF;

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2022-12-06
06:31
Development of a Position-Sensitive Detector for Positronium Inertial Sensing Measurements / Mariazzi, S (Trento U. ; TIFPA-INFN, Trento) ; Caravita, R (TIFPA-INFN, Trento) ; Glöggler, L (CERN ; Berlin, Tech. U.) ; Povolo, L (Trento U. ; TIFPA-INFN, Trento) ; Penasa, L (Trento U. ; TIFPA-INFN, Trento) ; Sharma, S (TIFPA-INFN, Trento ; Jagiellonian U. ; Jagiellonian U. (main)) ; Moskal, P (Jagiellonian U. ; Jagiellonian U. (main)) ; Brusa, R S (Trento U. ; TIFPA-INFN, Trento)
In the last twenty years, both free fall and interferometry/deflectometry experiments have been proposed for the measurement of the gravitational acceleration on positronium, which is a purely leptonic matter-antimatter atom formed by an electron and its antiparticle (positron). Among the several challenges posed by these experiments is the development of position-sensitive detectors to measure the deflection of positronium in the Earth's gravitational field. [...]
2022 - 5 p. - Published in : Acta Phys. Pol. A 142 (2022) 319-323 Fulltext: PDF;
In : 4th Jagiellonian Symposium on Advances in Particle Physics and Medicine, Kraków, Poland, 10 - 15 Jul 2022, pp.319-323

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2022-12-06
06:31
Direct MIP detection with sub-10 ps timing resolution Geiger-Mode APDs / Gramuglia, Francesco (Ecole Polytechnique, Lausanne) ; Ripiccini, Emanuele (Ecole Polytechnique, Lausanne) ; Fenoglio, Carlo Alberto (Ecole Polytechnique, Lausanne) ; Wu, Ming-Lo (Ecole Polytechnique, Lausanne) ; Paolozzi, Lorenzo (Geneva U. ; CERN) ; Bruschini, Claudio (Ecole Polytechnique, Lausanne ; Geneva U.) ; Charbon, Edoardo (Ecole Polytechnique, Lausanne)
In this work we present and discuss the use of state-of-the-art Geiger-mode APDs, also known as single-photon avalanche diodes (SPADs), for the detection of minimum ionizing particles (MIPs) with best-in-class timing resolution. The SPADs were implemented in standard CMOS technology and integrated with on-chip quenching and recharge circuitry. [...]
2023 - 2 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1047 (2023) 167813 Fulltext: PDF;
In : 15th Pisa Meeting on Advanced Detectors, La Biodola - Isola D'elba, It, 22 - 28 May 2022, pp.167813

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2022-12-06
06:31
Design and Test-Beam Results of the FoCal-H Demonstrator Prototype / Simeonov, Radoslav (Sofiya U.) /ALICE Collaboration
The forward calorimeter (FoCal) of ALICE, planned to be operational for LHC Run 4, will cover the pseudorapidity range 3.4 $ \leq \eta \leq $ 5.8 allowing to probe the unexplored region of Bjorken-x down to $10^{-6}$. The hadronic section of the FoCal (FoCal-H) will be based on copper capillary tubes and scintillating fibers inside, with light read out by silicon photomultipliers (SiPM). [...]
arXiv:2211.14791.- 2022 - 6 p. - Published in : Instruments 6 (2022) 70 Fulltext: 2211.14791 - PDF; instruments-06-00070-v3 - PDF;

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2022-12-06
06:31
Dynamics of Stellar Disk Tilting from Satellite Mergers / Dodge, Benjamin C (Princeton U.) ; Slone, Oren (Princeton U. ; New York U., CCPP) ; Lisanti, Mariangela (Princeton U. ; Flatiron Inst., New York) ; Cohen, Timothy (CERN ; EPFL, Lausanne, LPTP ; Oregon U.)
The Milky Way's stellar disk can tilt in response to torques that result from infalling satellite galaxies and their associated tidal debris. In this work, we explore the dynamics of disk tilting by running N-body simulations of mergers in an isolated, isotropic Milky Way-like host galaxy, varying over satellite virial mass, initial position, and orbit. [...]
arXiv:2207.02861.- 2022 - 15 p. - Published in : Mon. Not. R. Astron. Soc. 518 (2023) 2870-2884 Fulltext: PDF;

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2022-12-02
06:13
Studies on new Eco-gas mixtures for Extreme Energy Events Project / Bossini, E (Pisa U. ; INFN, Pisa) ; Abbrescia, M (Bari Polytechnic ; INFN, Bari ; Bari U.) ; Avanzini, C (INFN, Pisa ; Pisa U.) ; Baldini, L (Pisa U. ; INFN, Pisa) ; Ferroli, R Baldini (Frascati) ; Batignani, G (Pisa U. ; INFN, Pisa) ; Battaglieri, M (INFN, Genoa) ; Boi, S (Cagliari U. ; INFN, Cagliari) ; Carnesecchi, F (CERN) ; Cavazza, F (INFN, Bologna) et al.
The Extreme Energy Events (EEE) experiment, a joint project of the Centro Fermi and INFN Italian national research institutes, has a dual purpose: a scientific research program for measurements of the cosmic rays flux at ground level and an intense outreach and educational program with an active contribution of students and teachers in the construction and operation of the detectors in High Schools. The network counts 60 tracking detectors, each made by three Multigap Resistive Plate Chambers (MRPC), operated so far with a gas mixture composed by 98% C$_2$H$_2$F$_4$ and 2% SF$_6$. [...]
2023 - 3 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1046 (2023) 167754
In : 15th Pisa Meeting on Advanced Detectors, La Biodola - Isola D'elba, It, 22 - 28 May 2022, pp.167754

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