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2020-09-19
06:00
A magneto-mechanical model for rotating-coil magnetometers / Sorti, Stefano (CERN ; Milan Polytechnic) ; Petrone, Carlo (CERN) ; Russenschuck, Stephan (CERN) ; Braghin, Francesco (Milan Polytechnic)
Rotating-coil magnetometers are among the most common transducers for measuring local and integral magnetic fields of accelerator magnets. The measurement uncertainty strongly depends on the mechanical properties of the shafts, bearings, drive systems, and supports. [...]
2020 - Published in : Nucl. Instrum. Methods Phys. Res., A 984 (2020) 164599

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2020-09-19
06:00
Self-localized solutions of the Kundu-Eckhaus equation in nonlinear waveguides / Bayındır, Cihan (Istanbul, Tech. U. ; Bogazici U. ; CERN)
In this paper we numerically analyze the 1D self-localized solutions of the Kundu-Eckhaus equation (KEE) in nonlinear waveguides using the spectral renormalization method (SRM) and compare our findings with those solutions of the nonlinear Schrödinger equation (NLSE). For cubic-quintic nonlinearity with Raman effect, as a benchmark problem we numerically construct single, dual and $N$ -soliton solutions for the zero optical potential, i.e. [...]
2019 - Published in : Results Phys. 14 (2019) 102362

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2020-09-19
06:00
Diffusion bonding of Cu atoms with molecular dynamics simulations / Xydou, A (CERN ; Patras U.) ; Parviainen, S (Helsinki U.) ; Djurabekova, F (Helsinki U. ; Moscow Phys. Eng. Inst.)
Diffusion bonding of copper disks is an important step during the assembly of accelerating structures -the main components of power radio-frequency linear accelerators-. During the diffusion bonding copper disks are subjected to pressure at high temperatures. [...]
2020 - Published in : Results Phys. 16 (2020) 102890

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2020-09-17
09:04
Impact of deconditioning on the secondary electron yield of Cu surfaces in particle accelerators / Petit, V (CERN ; ONERA, Toulouse) ; Taborelli, M (CERN) ; Zanin, D A (CERN) ; Neupert, H (CERN) ; Chiggiato, P (CERN) ; Belhaj, M (ONERA, Toulouse)
Electron cloud is a critical phenomenon in particle accelerators operating with high intensity and positively charged beams, as it is responsible for beam instabilities, vacuum degradation, and heat load on cryogenic sections. Electron clouds provoke a conditioning of the beam pipe that is reflected on the reduction of its secondary electron yield (SEY). [...]
2020 - 9 p. - Published in : Phys. Rev. Accel. Beams 23 (2020) 093101 Fulltext from publisher: PDF;

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2020-09-17
09:04
The impact of synchrotron radiation at the Compact Linear Collider / Arominski, D (CERN ; Warsaw U. of Tech. ; Laue-Langevin Inst.) ; Sailer, A (CERN) ; Latina, A (CERN) ; Schulte, D (CERN)
Synchrotron radiation (SR) emission and interactions with the vacuum chamber walls have the potential to negatively impact the performance of future electron–positron colliders. The Beam Delivery System (BDS) of the Compact Linear Collider (CLIC) contains weak bending and multipole magnets that lead to less intense emissions than at circular colliders with similar centre-of-mass energies. [...]
2020 - 16 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 983 (2020) 164522 Fulltext from publisher: PDF;

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2020-09-17
09:04
A study of asymmetric tensile properties of large area GEM foil / Saviano, G (Frascati ; Rome U.) ; Muhammad, S (NCP, Islamabad) ; Benussi, L (Frascati) ; Bianco, S (Frascati) ; Piccolo, D (Frascati) ; Caponero, M A (Frascati ; ENEA, Frascati) ; Passamonti, L (Frascati) ; Pierluigi, D (Frascati) ; Russo, A (Frascati) ; Santonicola, M G (Rome U.) et al.
Gas Electron Multiplier (GEM) technology is being used in various applications, particularly in high energy physics experiments. The GEM is known as a reliable detector in high radiation environment which can maintain high temporal and position resolution. [...]
2020 - 10 p. - Published in : JINST 15 (2020) P09011 Fulltext: PDF;

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2020-09-17
09:04
Evolution of bunch envelope and emittance in photo-injectors with application to the AWAKE experiment / Kelisani, M D (CERN ; IPM, Tehran) ; Doebert, S (CERN) ; Aslaninejad, M (IPM, Tehran) ; Holzer, B (CERN)
We investigate on time evolution of envelopes and emittance of bunched beams in photo-injectors. We carry out a detailed beam dynamic study with focus on calculations of space charge forces. [...]
2020 - 13 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 982 (2020) 164564

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2020-09-17
09:04
Analysis of sampling and noise error on the energy measurement of direct digitally acquired pulsed signals / Degl'Innocenti, Irene (CERN ; Pisa U.) ; Boccardi, Andrea (CERN) ; Fanucci, Luca (Pisa U.) ; Wendt, Manfred (CERN)
The precise measurement of the energy content of a pulse signal, limited in time and bandwidth, is of great interest in many applications, and can be achieved by direct digitization of the analog signal, followed by calculation of the mean squared amplitude of the data samples. The beam position measurement in a particle accelerator is among the applications, and this technique is proposed for the next generation of read-out electronics for the beam position monitors of the CERN Large Hadron Collider. [...]
2020 - 13 p. - Published in : 10.1016/j.nima.2020.164571

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2020-09-17
09:04
Silicon Photomultipliers for the decay tunnel instrumentation of the ENUBET neutrino beam / Pozzato, M (INFN, Bologna) ; Acerbi, F (TIFPA-INFN, Trento ; Fond. Bruno Kessler, Povo) ; Ballerini, G (Insubria U., Como ; INFN, Milan Bicocca) ; Berra, A (Insubria U., Como ; INFN, Milan Bicocca) ; Bonesini, M (INFN, Milan Bicocca) ; Branca, A (INFN, Padua ; Turin U.) ; Brizzolari, C (INFN, Milan Bicocca ; Milan Bicocca U.) ; Brunetti, G (INFN, Padua) ; Calviani, M (CERN) ; Capelli, S (Insubria U., Como ; INFN, Milan Bicocca) et al.
The goal of the ENUBET project is to demonstrate that a precision of ∼1% on measurement of the absolute neutrino cross section at GeV scale can be achieved by monitoring the positron production in the decay tunnel coming from the three-body semileptonic decays of kaons. The baseline option for the tunnel instrumentation employs a fine-grained shashlik calorimeter with a 4.3 X 0 longitudinal segmentation to separate positrons and pions coming from other decay modes of kaons. [...]
2020 - 5 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 983 (2020) 164482

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2020-09-17
09:03
Silicon Carbide characterization at the n_TOF spallation source with quasi-monoenergetic fast neutrons / SICILIA Collaboration
Silicon Carbide (SiC) is a relatively new entry in the world of solid-state detectors. Although SiC response to neutrons is more complex than the one obtained with diamonds, the measured energy resolution (FWHM/ Ed<4% ) makes SiC an interesting alternative to diamond and silicon detectors for fast neutrons. [...]
2020 - 9 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 983 (2020) 164578

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