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2020-08-11
06:05
Performance studies of RPC detectors with new environmentally friendly gas mixtures in presence of LHC-like radiation background / Rigoletti, G (Lyon U.) ; Mandelli, B (CERN) ; Guida, R (CERN)
RPC detectors are widely used at the CERN LHC experiments as muon trigger thanks to their excellent time resolution. They are operated with a Freon-based gas mixture containing C2H2F4 as well as some amount of SF6. [...]
2020 - 8 p. - Published in : JINST 15 (2020) C05004
In : 15th Topical Seminar on Innovative Particle and Radiation Detectors (IPRD 2019), Siena, Italy, 14 - 17 Oct 2019, pp.C05004

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2020-08-08
06:11
Compression and thermal conductivity tests of Cryogel® Z for use in the ultra-transparent cryostats of FCC detector solenoids / Ilardi, V (CERN ; U. Groningen, VSI ; Twente U., Enschede) ; Busch, L N (CERN ; U. Groningen, VSI ; KIT, Karlsruhe) ; Dudarev, A (CERN ; U. Groningen, VSI) ; Koettig, T (CERN ; U. Groningen, VSI) ; de Sousa, P Borges (CERN ; U. Groningen, VSI) ; Liberadzka, J (CERN ; U. Groningen, VSI) ; Silva, H (CERN ; U. Groningen, VSI) ; ten Kate, H H J (CERN ; U. Groningen, VSI)
The Future Circular Collider (FCC) study includes the design of the detector magnets for the FCC-ee$^+$ (electron-positron) collider, requiring a 2 T solenoid for particle spectrometry, and for the FCC-hh (proton-proton) collider, with a 4 T detector solenoid. For both solenoids and their cryostats, CERN is developing an innovative and challenging design in which the solenoids are positioned inside the calorimeters, directly surrounding the inner tracker. [...]
IOP, 2020 - 7 p. - Published in : IOP Conf. Ser. Mater. Sci. Eng. 756 (2020) 012005 Fulltext: PDF;
In : Conference on Cryogenic Engineering and on International Cryogenic Materials, Hartford, Connecticut, 21 - 25 Jul 2019, pp.012005

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2020-08-08
06:11
Heavy-Ion Microbeam Studies of Single-Event Leakage Current Mechanism in SiC VD-MOSFETs / Martinella, C (CERN) ; Ziemann, T (Zurich, ETH) ; Stark, R (Zurich, ETH) ; Tsibizov, A (Zurich, ETH) ; Voss, K O (Darmstadt, GSI) ; Alia, R G (CERN) ; Kadi, Y (CERN) ; Grossner, U (Zurich, ETH) ; Javanainen, A (Jyvaskyla U.)
Heavy-ion microbeams are employed for probing the radiation-sensitive regions in commercial silicon carbide (SiC) vertical double-diffused power (VD)-MOSFETs with micrometer accuracy. By scanning the beam spot over the die, a spatial periodicity was observed in the leakage current degradation, reflecting the striped structure of the power MOSFET investigated. [...]
2020 - 9 p. - Published in : IEEE Trans. Nucl. Sci. 67 (2020) 1381-1389 Fulltext from publisher: PDF;

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2020-08-08
06:11
Design and performance studies of the calorimeter system for a FCC-hh experiment / Aleksa, M (CERN)
The physics reach and feasibility of the Future Circular Collider (FCC) with centre of mass energies up to 100 TeV and unprecedented luminosity has delivered a Conceptual Design Report early 2019. 100 TeV proton-proton collisions will produce very high energetic particle showers in the calorimeters from both, jets and composite objects such as boosted bosons/tops. [...]
2020 - Published in : JINST 15 (2020) C06058
In : 3rd Conference on Calorimetry for the High Energy Frontier, Fukuoka, Japan, 25 - 29 Nov 2019, pp.C06058

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2020-08-08
06:11
Versatile systems for characterization of large-area silicon pad sensors for highly-granular calorimetry / de Almeida, P Dias (CERN ; Cantabria Inst. of Phys.)
High-granularity calorimeters utilizing silicon pad sensors as main active material are being designed for the CMS endcap calorimeter upgrade and have been proposed for the electromagnetic calorimeters at CLIC, ILC and FCC-ee. The silicon sensors in such experiments are foreseen to cover a very large area of O(1000 m2). [...]
2020 - 9 p. - Published in : JINST 15 (2020) C06050
In : 3rd Conference on Calorimetry for the High Energy Frontier, Fukuoka, Japan, 25 - 29 Nov 2019, pp.C06050

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2020-08-08
06:11
Physics object performance of the FCC-hh calorimeter system / Helsens, C (CERN)
The feasibility of a future proton-proton collider (FCC-hh) has been outined in Conceptual Design Reports published early 2019. FCC-hh would deliver collisions at a center of mass energy up to 100 TeV and unprecedented instantaneous luminosity (L=3 × 1034), resulting in extremely challenging radiation conditions up to a maximum of 5× 1018 neq/cm2 and a dose up to 5 GGy in the forward calorimeters (up to |η|=6) and up to 1000 simultaneous proton-proton interactions per bunch-crossing. [...]
2020 - 9 p. - Published in : JINST 15 (2020) C06007
In : 3rd Conference on Calorimetry for the High Energy Frontier, Fukuoka, Japan, 25 - 29 Nov 2019, pp.C06007

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2020-08-08
06:11
Status of Geant4 simulations of calorimeters / Howard, A (CERN ; Imperial Coll., London) ; Ivanchenko, V (CERN ; Tomsk State U.) ; Novak, M (CERN) ; Ribon, A (CERN)
Geant4 is the main software tool for Monte Carlo simulations of the calorimeter response in high energy physics (HEP). In this work, we report recent developments of Geant4 physics models, which are available in version 10.6, released in December 2019. [...]
2020 - 8 p. - Published in : JINST 15 (2020) C05073
In : 3rd Conference on Calorimetry for the High Energy Frontier, Fukuoka, Japan, 25 - 29 Nov 2019, pp.C05073

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2020-08-08
06:11
The Phase II upgrade of the LHCb calorimeter system / Pizzichemi, M (CERN)
The Phase 2 LHCb Upgrade, which is now being developed by the LHCb Collaboration, is supposed to make LHCb able to work at high luminosity, up to 2 ċ 1034/cm2/s. The plan is to collect ∼300 fb−1 of data in a few years. [...]
2020 - 9 p. - Published in : JINST 15 (2020) C05062
In : 3rd Conference on Calorimetry for the High Energy Frontier, Fukuoka, Japan, 25 - 29 Nov 2019, pp.C05062

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2020-08-08
06:11
n + $^7$Be Cross-Sections of Astrophysical Interest at the CERN n_TOF Facility / Mastromarco, Mario (CERN ; Manchester U.) ; Damone, Lucia Anna (INFN, Bari ; Bari U.) ; Barbagallo, Massimo (CERN ; INFN, Bari) /n_TOF Collaboration
One of the possible explanations of the so-called Cosmological Lithium Problem (CLIP), i.e., the large overestimate of the primordial$^7$Li abundance by the standard Big Bang Nucleosynthesis theory (BBN), is related to an incorrect underestimation of the 7 Be destruction rate by neutron-induced reactions. To verify this possibility, the n + $^7$Be reactions have been investigated at n_TOF (CERN) in a wide neutron energy range, taking advantage of the new high-flux experimental area (EAR2) and specifically developed experimental setups. [...]
MDPI, 2019 - 9 p. - Published in : MDPI Proc. 13 (2019) 12 Fulltext: PDF;
In : 7th International Conference on New Frontiers in Physics, Kolymbari, Crete, Greece, 4 - 12 Jul 2018, pp.12

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2020-08-08
06:11
Performance study of HGCROC-v2: the front-end electronics for the CMS High Granularity Calorimeter / Thienpont, D (Ec. Polytech., OMEGA) ; de la Taille, C (Ec. Polytech., OMEGA) /CMS Collaboration
The High Granularity Calorimeter (HGCAL), presently being designed by the Compact Muon Solenoid collaboration (CMS) to replace the existing endcap calorimeters for the High Luminosity phase of the LHC (HL-LHC), will feature unprecedented transverse and longitudinal readout and triggering segmentation for both electromagnetic and hadronic sections. The requirements for the front-end electronics are extremely challenging, including high dynamic range (0–10 pC), low noise (0∼ 200 electrons), high-precision timing information in order to mitigate the pileup effect (25 ps binning) and low power consumption (∼ 15 mW/channel). [...]
2020 - 8 p. - Published in : JINST 15 (2020) C04055
In : 3rd Conference on Calorimetry for the High Energy Frontier, Fukuoka, Japan, 25 - 29 Nov 2019, pp.C04055

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