cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Performance of Quantum Preprocessing under Phase Noise
Creators: name: Amiri, Zuhra
name: Bash, Boulat A.
name: Nötzel, Janis
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Optical fiber transmission systems form the backbone of today's communication networks and will be of high importance for future networks as well. Among the prominent noise effects in optical fiber is phase noise, which is induced by the Kerr effect. This effect limits the data transmission capacity of these networks and incurs high processing load on the receiver. At the same time, quantum information processing techniques offer more efficient solutions but are believed to be inefficient in terms of size, power consumption and resistance to noise. Here we investigate the concept of an all-optical joint detection receiver. We show how it contributes to enabling higher baud-rates for optical transmission systems when used as a pre-processor, even under high levels of noise induced by the Kerr effect.
description: 6 pages, 3 figures; To be published in IEEE GLOBECOM 2022, see this https://globecom2022.ieee-globecom.org
Supercell calculations in the reduced Hartree-Fock model for crystals with local defects
Creators: name: Gontier, David
name: Lahbabi, Salma
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this article, we study the speed of convergence of the supercell reduced Hartree-Fock~(rHF) model towards the whole space rHF model in the case where the crystal contains a local defect. We prove that, when the defect is charged, the defect energy in a supercell model converges to the full rHF defect energy with speed $L^{-1}$, where $L^3$ is the volume of the supercell. The convergence constant is identified as the Makov-Payne correction term when the crystal is isotropic cubic. The result is extended to the non-isotropic case.
Bragg Enhanced Plasmonic Luminescent Downshifting for PV Devices
Creators: name: Walshe, J.
name: Ahmed, H.
name: McCormack, S.J.
name: Doran, J.
Publisher: name: WIP
Year: 2016
Subjects: New Materials and Concepts for Solar Cells and Modules
New Materials and Concepts for Cells

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 256-259
description: Selectively reflecting Bragg structures comprised of simple quarter-wave coatings offer a mechanism to
further improve upon the enhancements achieved with plasmonic enhanced luminescent down shifting (pLDS) layers.
Theoretical modelling using a transfer matrix approach demonstrates the ability of simple one- or two-layer reflecting
structures to offer enhancements in the performance of a PV device consisting of a 9μm-90μm pLDS layer deposited on
top of a silicon cell. Enhancements of 10.8% - 21% are reported, with the enhancement depending upon a number of
design parameters (number of layers, spectral region of maximum performance and the optical properties of the
constructing materials). Design of thin film enhanced pLDS layers are presented as well as establishing initial design
parameters for these enhanced structures.
Dirac field as a source of the inflation in 2+1 dimensional Teleparallel gravity
Creators: name: Gecim, Ganim
name: Sucu, Yusuf
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we study early-time inflation and late-time acceleration of the universe by non-minimally coupling the Dirac field with torsion in the spatially flat Friedman-Robertson-Walker (FRW) cosmological model background. The results obtained by the Noether symmetry approach with and without a gauge term are compared. Additionally, we compare these results with that of the 3+1 dimensional teleparallel gravity under Noether symmetry approach. And we see that the study explains early-time inflation and late-time acceleration of the universe.
description: 15 pages, final version to appear in Adv. High Energy Phys
Empirical temperature- and extinction-dependent extinction coefficients for the GALEX, Pan-STARRS1, Gaia, SDSS, 2MASS, and WISE passbands
Creators: name: Zhang, Ruoyi
name: Yuan, Haibo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have obtained accurate dust reddening from far-ultraviolet (UV) to the mid-infrared (IR) for up to 5 million stars by the star-pair algorithm based on LAMOST stellar parameters along with GALEX, Pan-STARRS 1, Gaia, SDSS, 2MASS, and WISE photometric data. The typical errors are between 0.01-0.03 mag for most colors. We derived the empirical reddening coefficients for 21 colors both in the traditional (single valued) way and as a function of Teff and E(B-V) by using the largest samples of accurate reddening measurements, together with the extinction values from Schlegel et al. The corresponding extinction coefficients have also been obtained. The results are compared with model predictions and generally in good agreement. Comparisons with measurements in the literature show that the Teff- and E(B-V)-dependent coefficients explain the discrepancies between different measurements naturally, i.e., using sample stars of different temperatures and reddening. Our coefficients are mostly valid in the extinction range of 0-0.5 mag and the temperature range of 4000-10000 K. We recommend that the new Teff and E(B-V) dependent reddening and extinction coefficients should be used in the future. A Python package is also provided for the usage of the coefficient
description: 21 pages, 9 figures, 4 table (including appendix). Published in the Astrophysical Journal Supplement Series
Thin-Film Barriers for Durable Thin-Film PV Modules
Creators: name: Hüpkes, J.
name: Wrigley, A.
name: Reetz, W.
name: Wyrsch, N.
name: Cattaneo, G.
name: Sculati-Meillaud, F.
name: Gerber, A.
Publisher: name: WIP
Year: 2016
Subjects: New Materials and Concepts for Solar Cells and Modules
New Materials and Concepts for Modules

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 173-175
description: This contribution describes thin-film barrier coatings to enhance the stability of silicon thin-film solar
modules. Thin-film barriers are applied to protect the modules from degradation in humid environment.
Demonstrator modules were exposed to indoor and outdoor tests to evaluate failure modes by
electrochemical corrosion during operation. Test results reveal some major failure modes, but we
demonstrate long lifetimes under operational conditions for certain modules without conventional
encapsulation. These modules without conventional encapsulation showed less than 1% relative
degradation during 1000 hours of damp-heat tests with light exposure at open circuit voltage. These
promising results will guide the way to new encapsulation concepts for longer lifetimes and/or new
low-cost concepts. This approach might be applied to any thin-film technology and will be an
important aspect for consumer electronics with less strict requirements for very long-term operation.
Lecture Script: "EMI Risk Management"
Creators: name: Sabath, Frank
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2021
Subjects: subject: Risk Management
subject: EMI Risk Management
subject: Electromagnetic Interference (EMI)
subject: EMI Scenario
subject: Generic ”Offender”
subject: Risk Evaluation
subject: EMI Risk Treatment
subject: Dewey Decimal Classification::600 | Technik

description: Content of the lecture: Fundamentals and methods of risk analysis; Basic design and technology of IEMI sources (e.g., VIRCATOR, Magnetron, Klystron, …); Modelling of IEMI threat scenarios; EMI effects on electric systems; Protective measure; Discussion and assessment of the risk for critical infrastructures; Case studies on a generic infrastructure
Multiplicity and rapidity dependence of strange hadron production in pp, pPb, and PbPb collisions at the LHC
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Measurements of strange hadron (K0s, Lambda + anti-Lambda, and Xi+ + Xi-) transverse momentum spectra in pp, pPb, and PbPb collisions are presented over a wide range of rapidity and event charged-particle multiplicity. The data were collected with the CMS detector at the CERN LHC in pp collisions at sqrt(s) = 7 TeV, pPb collisions at sqrt(s[NN]) = 5.02 TeV, and PbPb collisions at sqrt(s[NN]) = 2.76 TeV. The average transverse kinetic energy is found to increase with multiplicity, at a faster rate for heavier strange particle species in all systems. At similar multiplicities, the difference in average transverse kinetic energy between different particle species is observed to be larger for pp and pPb events than for PbPb events. In pPb collisions, the average transverse kinetic energy is found to be slightly larger in the Pb-going direction than in the p-going direction for events with large multiplicity. The spectra are compared to models motivated by hydrodynamics.
description: Replaced with the published version. Added the journal reference. All the figures and tables, including a supplemental figure, can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIN-15-006/index.html
CHANTI: a Fast and Efficient Charged Particle Veto Detector for the NA62 Experiment at CERN
Creators: name: Ambrosino, F.
name: Capussela, T.
name: Di Filippo, D.
name: Massarotti, P.
name: Mirra, M.
name: Napolitano, M.
name: Palladino, V.
name: Saracino, G.
name: Roscilli, L.
name: Vanzanella, A.
name: Corradi, G.
name: Tagnani, D.
name: Paglia, U.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The design, construction and test of a charged particle detector made of scintillation counters read by Silicon Photomultipliers (SiPM) is described. The detector, which operates in vacuum and is used as a veto counter in the NA62 experiment at CERN, has a single channel time resolution of 1.14 ns, a spatial resolution of ~2.5 mm and an efficiency very close to 1 for penetrating charged particles.
Effects of Luminescent Coupling in Perovskite/c-Si Multijunction Solar Cells with Nanostructured Interlayer
Creators: name: Tayagaki, T.
name: Kurokawa, Y.
name: Usami, N.
Publisher: name: WIP
Year: 2016
Subjects: New Materials and Concepts for Solar Cells and Modules
New Materials and Concepts for Cells

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 205-208
description: Light management in tandem solar cells has gained much attention for achieving high conversion
efficiency. Here, we investigate the effects of nanostructured interfaces on the optical properties such as optical
coupling of luminescent tandem solar cells by using electromagnetic wave simulation. We calculated the angledependent
Fresnel coefficients at the nanostructured interface in lead-halide perovskite/c-Si tandem solar cells. The
simulation results show that the luminescent coupling between the perovskite and c-Si sub-cells can be improved
using a short-period nanostructured interface. A luminescent coupling efficiency greater than 95% is obtained for the
nanostructured interface with height less than 1 µm.
Parametric Feedback Cooling of Levitated Optomechanics in a Parabolic Mirror Trap
Creators: name: Vovrosh, Jamie
name: Rashid, Muddassar
name: Hempston, David
name: Bateman, James
name: Paternostro, Mauro
name: Ulbricht, Hendrik
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate a simple and robust geometry for optical trapping in vacuum of a single nanoparticle based on a parabolic mirror and the optical gradient force, and we demonstrate rapid parametric feedback cooling of all three motional degrees of freedom from room temperature to a few mK. A single laser at 1550nm, and a single photodiode, are used for trapping, position detection, and cooling for all three dimensions. Particles with diameters from 26nm to 160nm are trapped without feedback to 10$^{-5}$mbar and with feedback engaged the pressure is reduced to 10$^{-6}$mbar. Modifications to the harmonic motion in the presence of noise and feedback are studied, and an experimental mechanical quality factor $>4\times 10^7$ is estimated.
description: Updated version of the paper, Comments welcome!
Intrinsic Transport in Non-Uniformly Doped Si Regions
Creators: name: Abenante, L.
name: Izzi, M.
Publisher: name: WIP
Year: 2016
Subjects: New Materials and Concepts for Solar Cells and Modules
Fundamental Studies

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 138-140
description: We present the exact analytical solution to minority-carrier transport in a non-uniformly doped Si region
and the expression for emitter saturation current density, Jo, for the case, where diffusivity is unaltered by doping
and lifetime is only determined by Auger recombination. We call this case "intrinsic transport". Numerical simulations
show that, at negligible SRH recombination, assuming intrinsic transport also at doping levels lower than
5×1018 cm-3 in both n- and p-type emitters is reasonable. We apply the previous issues to fit reported data of Jo in
both n- and p-type emitters as a function of sheet resistance, RSHEET. To this aim, an analytical expression for
Jo(RSHEET) is derived.
Micromagnetic frequency-domain simulation methods for magnonic systems
Creators: name: d'Aquino, Massimiliano
name: Hertel, Riccardo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We present efficient numerical methods for the simulation of small magnetization oscillations in three-dimensional micromagnetic systems. Magnetization dynamics is described by the Landau-Lifshitz-Gilbert (LLG) equation, linearized in the frequency domain around a generic equilibrium configuration, and formulated in a special operator form that allows leveraging large-scale techniques commonly used to evaluate the effective field in time-domain micromagnetic simulations. By using this formulation, we derive numerical algorithms to compute the free magnetization oscillations (i.e., spin wave eigenmodes) as well as magnetization oscillations driven by ac radio-frequency fields for arbitrarily shaped nanomagnets. Moreover, semi-analytical perturbation techniques based on the computation of a reduced set of eigenmodes are provided for fast evaluation of magnetization frequency response and absorption spectra as a function of damping and ac field. We present both finite difference and finite element implementations and demonstrate their effectiveness on a test case. These techniques open the possibility to study generic magnonic systems discretized with several hundred thousand (or even millions) of computational cells in a reasonably short time.
description: The following article has been accepted by Journal of Applied Physics. After it is published, it will be found at https://aip.scitation.org/journal/jap . Revised version, 11 pages, 1 table, 3 figures. Changes made in v3: minor edits and corrections
Cesàro summability of integrals of fuzzy-number-valued functions
Creators: name: Yavuz, Enes
name: Talo, Özer
name: Çoşkun, Hüsamettin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 40G05, 40E05, 40A10, 03E72

description: In the present study, we have introduced Cesàro summability of integrals of fuzzy-number-valued functions and given one-sided Tauberian conditions under which convergence of improper fuzzy Riemann integrals follows from Cesàro summability. Also, fuzzy analogues of Schmidt type slow decrease and Landau type one-sided Tauberian conditions have been obtained.
description: Publication information is added
Fast Processing of Sol-Gel TCO
Creators: name: Van Deelen, J.
name: Rem, M.
name: Arfsten, N.
name: Buskens, P.P.
Publisher: name: WIP
Year: 2016
Subjects: New Materials and Concepts for Solar Cells and Modules
Fundamental Studies

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 155-157
description: TCOs are usually deposited using sputtering or chemical vapor deposition, which have a yield of
typically 50-75%. The sol gel method does not need low pressure and can be done with a high precursor yield in the
range of 90 – 100%. Sol gel enables also the TCO function as a planarization or texturisation layer. Major drawback
and cost driver is the annealing step. The annealing process parameter requirements are highly related to the
ingredients and their preparation. These factors can be tuned to get both a layer of high quality and a fast and cost
effective process. We present here an annealing study with in-situ conductivity measurement to monitor the effect of
temperature ramping, process time, process gas, etc. For ITO, we obtained a sheet resistance of 20 Ohm/sq for layers
below 100 nm in thickness as a best result. Furthermore, the annealing process can be tuned to be within a couple of
minutes.
Controllable chirality and band gap of quantum anomalous Hall insulators
Creators: name: Xu, Zhiming
name: Duan, Wenhui
name: Xu, Yong
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Finding guiding principles to optimize properties of quantum anomalous Hall (QAH) insulators is of pivotal importance to fundamental science and applications. Here, we build a first-principles QAH material database of chirality and band gap, explore microscopic mechanisms determining the QAH material properties, and obtain a general physical picture that can comprehensively understand the QAH data. Our results reveal that the usually neglected Coulomb exchange is unexpectedly strong in a large class of QAH materials, which is the key to resolve experimental puzzles. Moreover, we identify simple indicators for property evaluation and suggest material design strategies to control QAH chirality and gap by tuning cooperative or competing contributions via magnetic co-doping, heterostructuring, spin-orbit proximity, etc. The work is valuable to future research of magnetic topological physics and materials.
Colloidal Synthesis, Structural and Optical Properties of CuIn3Se5 Nanocrystals for Photovoltaics
Creators: name: Ghali, M.A.
name: ElNimr, E.M.
name: Ali, G.F.
name: Eissa, A.M.
Publisher: name: WIP
Year: 2016
Subjects: New Materials and Concepts for Solar Cells and Modules
Fundamental Studies

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 152-154
description: We report on the synthesis of colloidal CuIn3Se5 nanocrystals, for the first time, using simple solutionbased
method. The cubic phase CuIn3Se5 nanocrystals grow, in the shape of nanoparticles, with an average diameter of
35 nm. The band gap of the grown CuIn3Se5 nanocrystals is determined to be 1.33 eV and thus can be suitable for inkcoated
thin film solar cells.
Air Cooling of Photovoltaic Panels: a Numerical Approach
Creators: name: Martin-Carron, L.
name: Becker, R.
name: Graebling, D.
name: Luce, R.
name: Ugarte, D.
name: Macq, A.
name: Cristi, N.
Publisher: name: WIP
Year: 2016
Subjects: New Materials and Concepts for Solar Cells and Modules
Fundamental Studies

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 127-130
description: It is well known that high temperatures affect in a negative way the performance of PV Silicon
modules. There are several ways of decreasing the modules temperature by external cooling, therefore increasing its
performance: water and air cooling. Although we are interested in studying the way that the PV module transfers heat
to the external cool water while it approaches its optimum working temperature, this work is a first step towards
developing the digital tools to study water cooling of PV roof installations. The model, which is a fine modeling,
studies the cooling of a PV panel by air in two different cases of convection: natural cooling in a cool environment
and forced cooling with wind. The numerical simulations show the efficient heat transfer between the PV panel
(modeled by a glass plate) and ambient air. We use the Navier-Stokes equations coupled with the heat equation, using
the Boussinesq approximation to take into account the thermal variation of density. This allows us to take into
account the varying parameters as temperature, wind speed and inclination of panel (gravity). The simulations show
that the most efficient regime for free convection is when the module is not perpendicular to gravity direction. The
efficiency increases with the wind speed. The most efficient case is obtained when the wind is parallel to the panel.
Recent Advances in Polymer/Silicon Heterojunction Solar Cells
Creators: name: Schmidt, J.
name: Zielke, D.
name: Gogolin, R.
name: Sauer, R.
name: Lövenich, W.
Publisher: name: WIP
Year: 2016
Subjects: New Materials and Concepts for Solar Cells and Modules
New Materials and Concepts for Cells

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 85-88
description: In this contribution, we first give a brief historical overview of the recent developments on
polymer/silicon heterojunction cells. We then focus on our most recent results concerning: (i) the PEDOT:PSS/c-Si
interface design, where the thickness of the native oxide in-between the c-Si surface and the polymer is shown to play
a crucial role, (ii) a new type of heterojunction cell, where the hole-selective layer is PEDOT:PSS and the electronselective
layer is well-passivating phosphorus-doped amorphous silicon (n-a-Si:H), (iii) the stability of the
polymer/silicon cells in ambient environment. We demonstrate for the first time that the efficiencies of BackPEDOT
cells are long-term stable if a metal foil is used as rear metallization scheme, as the metal foil does not transmit any
humidity in contrast to evaporated metals. (iv) We present first results of our attempt to implement a PEDOT:PSS/c-
Si junction into an industrial-type large-area (15.6×15.6 cm2) screen-printed c-Si solar cell and reach an efficiency of
19.5% in our first batch of cells.
The Circumgalactic Medium of Milky Way-like Galaxies in the TNG50 Simulation -- I: Halo Gas Properties and the Role of SMBH Feedback
Creators: name: Ramesh, Rahul
name: Nelson, Dylan
name: Pillepich, Annalisa
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We analyze the physical properties of gas in the circumgalactic medium (CGM) of 132 Milky Way (MW)-like central galaxies at $z=0$ from the cosmological magneto-hydrodynamical simulation TNG50, part of the IllustrisTNG project. The properties and abundance of CGM gas across the sample are diverse, and the fractional budgets of different phases (cold, warm, and hot), as well as neutral HI mass and metal mass, vary considerably. Over our stellar mass range of $10^{10.5} < M_\star / \rm{M}_\odot < 10^{10.9}$, radial profiles of gas physical properties from $0.15 < R\rm{ / R_{\rm 200c}} < 1.0$ reveal great CGM structural complexity, with significant variations both at fixed distance around individual galaxies, and across different galaxies. CGM gas is multi-phase: the distributions of density, temperature and entropy are all multimodal, while metallicity and thermal pressure distributions are unimodal; all are broad. We present predictions for magnetic fields in MW-like halos: a median field strength of $|B|\sim\,1μ$G in the inner halo decreases rapidly at larger distance, while magnetic pressure dominates over thermal pressure only within $\sim0.2 \times \rm{R_{200c}}$. Virial temperature gas at $\sim 10^6\,$K coexists with a sub-dominant cool, $< 10^5\,$K component in approximate pressure equilibrium. Finally, the physical properties of the CGM are tightly connected to the galactic star formation rate, in turn dependent on feedback from supermassive black holes (SMBHs). In TNG50, we find that energy from SMBH-driven kinetic winds generates high-velocity outflows ($\gtrsim 500-2000$ km/s), heats gas to super-virial temperatures ($> 10^{6.5-7}$ K), and regulates the net balance of inflows versus outflows in otherwise quasi-static gaseous halos.
description: Minor typos fixed. Additional visuals at www.tng-project.org/ramesh22!
Production of Low Cost Back Contact Based PV Modules
Creators: name: Goris, M.J.A.A.
name: Kikkert, B.W.J.
name: Kroon, J.M.
name: Rozema, K.
name: Bennett, I.J.
name: Verlaak, J.
Publisher: name: WIP
Year: 2016
Subjects: New Materials and Concepts for Solar Cells and Modules
New Materials and Concepts for Modules

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 99-104
description: In this paper, two developments targeted at reducing the production cost of back-contact modules are
presented. The first cost reduction potential is realised by replacing the conductive copper layer with aluminium with
a very thin and locally applied copper coating using cold spray technology. This results in a 2% PV module cost
saving while also meeting industrial requirements for production speed and reduction of contamination. Prototype
mini-modules manufactured using this method have shown very good performances and passed selected IEC
reliability tests (Damp Heat and Thermal Cycling).The second cost reduction comes from reduction of encapsulant
usage. By using powder coating technology, encapsulant thicknesses below 100 microns can be achieved. This not
only results in the reduction of encapsulant usage as compared to standard modules, but it also increases production
flexibility. Application of powder coated encapsulant results in a cost reduction of 1%. An additional cost advantage
of the implementation of thinner encapsulants is a reduction of conductive adhesive of at least 60%, which can result
in an additional 2% cost reduction.
An Inexpensive Spectral Sensor for MMPT in Partial Shade
Creators: name: López-Álvarez, M.A.
name: Collins, S.
name: Hernández-Ándres, J.
Publisher: name: WIP
Year: 2016
Subjects: New Materials and Concepts for Solar Cells and Modules
Fundamental Studies

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 118-122
description: Metrics such as the Useful Fraction (UF), the Weighted Useful Fraction (WUF) and the Average Photon
Energy (APE), have been proposed and successfully used to demonstrate the relationship between the spectrum of the
incident radiation and solar cell performance. In this work we propose the use of a new inexpensive optical sensing
technology to accurately determine the spectrum of incident light and hence the UF, WUF, APE and Photon Absorption
rate in real time. These sensors could be integrated within a photovoltaic system to gather data for a maximum power
point tracking (MPPT) system that can deal with challenging partial shading conditions.
Tuner control system of spoke012 SRF cavity for C-ADS injector I at IHEP
Creators: name: Liu, Na
name: Sun, Yi
name: Wang, Guang-Wei
name: Mi, Zheng-Hui
name: Lin, Hai-Ying
name: Wang, Qun-Yao
name: Liu, Rong
name: Ma, Xin-Peng
Publisher: name: arXiv
Year: 2016
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: Systems and Control (eess.SY)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: A new tuner control system of spoke superconducting radio frequency (SRF) cavity has been developed and applied to cryomodule I (CM1) of C-ADS injector I at IHEP. We have successfully implemented the tuner controllerfor the first time and achieved a cavity tuning phase error of 0.7degrees (about 4 Hz peak to peak) in the presence of electromechanical coupled resonance. This paper will present the preliminary experimental results based on the new tuner controller under proton beam commissioning.
Winds in ultraluminous X-ray sources: new challenges
Creators: name: Pinto, Ciro
name: Kosec, Peter
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Ultraluminous X-ray sources (ULXs) are extreme X-ray binaries shining above 10^39 erg/s, in most cases as a consequence of super-Eddington accretion onto neutron stars and stellar-mass black holes accreting above their Eddington limit. This was understood after the discovery of coherent pulsations, cyclotron lines and powerful winds. The latter was possible thanks to the high-resolution X-ray spectrometers aboard XMM-Newton. ULX winds carry a huge amount of power owing to their relativistic speeds (0.1-0.3 c) and are able to significantly affect the surrounding medium, likely producing the observed 100 pc ULX superbubbles, and limit the amount of matter that can reach the central accretor. The study of ULX winds is therefore quintessential to understand 1) how much and how fast can matter be accreted by compact objects and 2) how strong is their feedback onto the surrounding medium. This is also relevant to understand supermassive black holes growth. Here we provide an overview on this phenomenology, highlight some recent, exciting results and show how future missions such as XRISM, eXTP and ATHENA will improve our understanding.
description: To appear in Astronomische Nachrichten / Astronomical Notes (AN)
Novel High Performance, Highly Durable, Anti-Reflective Coating for Photovoltaic Glass
Creators: name: Brophy, B.
name: Maghsoodi, S.
name: Gonsalves, P.
name: Hu, Y.
name: Terry, M.
name: Dee, J.
name: Alcantara, C.
name: Wang, Y.
name: Qi, J.
name: Hu, D.
Publisher: name: WIP
Year: 2016
Subjects: New Materials and Concepts for Solar Cells and Modules
New Materials and Concepts for Modules

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 110-114
description: Anti-reflective (AR) coatings address reflection losses at the PV glass surface of approximately 4% of
normally incident light. These coatings reduce this loss by 1.5% to 3% and include sputtered multi-layer interference
coatings and many variations of sol-gel derived, single-layer, porous silica. Early AR coatings suffered from poor field
durability including delamination, corrosion and problems with contamination and soiling. In recent years, durability
has improved and modern coatings are capable of long-term performance under moderate environment conditions.
However, recent research has shown that these coatings remain susceptible to abrasion damage from activities such as
regular cleaning, and to degradation from deployment in wet or humid environments. The structure of AR
coatings create an inherent tradeoff between durability and optical performance, so more durable coatings tend to be at
the lower end of the optical performance scale. In addition, the composition of the coating matrix itself can impact its
long-term stability under humid or moist conditions. Now, in this work, we report on a novel method of creating
structured porosity in highly durable, functionalized silica films that enable high optical performance with improved
abrasion and moisture resistance. The resulting films are characterized optically and structurally and we report on their
performance to standard and extended testing according to IEC specifications and to other applicable abrasion tests.
Enabling Solderability of PVD Al Rear Contacts on High-Efficiency Crystalline Silicon Solar Cells by Wet Chemical Treatment
Creators: name: Nagel, H.
name: Kamp, M.
name: Eberlein, D.
name: Kraft, A.
name: Bartsch, J.
name: Glatthaar, M.
name: Glunz, S.W.
Publisher: name: WIP
Year: 2016
Subjects: New Materials and Concepts for Solar Cells and Modules
New Materials and Concepts for Modules

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 48-52
description: Results of an electroless displacement process for the deposition of inexpensive solderable metal on
physical vapour deposited (PVD) aluminum are presented. The dip – rinse – dry processing sequence for electroless
metal deposition on Al is simple and easy to use because it does not harm the SiN antireflection coating and
the screen-printed Ag metallization on the cells’ front side. Hence, finished cells can entirely be immersed into the
electrolyte. The deposited metal layer is highly porous, but forms a massive alloy with common Sn/Pb/Ag solder at
low temperature of 245 °C in the presence of no-clean flux. Because the molten alloy wets Al and copper well, we
obtained strong solder joints for Sn/Pb/Ag coated copper ribbons on Al. The measured average 90° peel forces of
ribbons soft soldered to thermally evaporated Al on shiny etched silicon and on the rear of alkaline textured monocrystalline
Si PERC solar cells were up to 3.1 and 2.2 N per mm ribbon width, respectively. These values exceed 1
N/mm that is specified by the standard DIN EN 50461. Climate tests on single-cell glass-glass modules yielded 4.1
and 7.7 % power degradation after 200 thermal cycles from -40 °C to 85 °C and after 1000 h under damp-heat
conditions at 85 °C and 85 % relative humidity, respectively. We attribute the too high power degradation after
damp-heat test to residuals of the acidic flux which was used for soldering the cells in this first, older version of the
developed technology.
Reconfigurable Topologies for Smarter PV Modules: Simulation, Evaluation and Implementation
Creators: name: Bauwens, P.
name: Govaerts, J.
name: Baka, M.
name: Catthoor, F.
name: Baert, K.
name: Van Den Broeck, G.
name: Goverde, H.
name: Anagnostos, D.
name: Doutreloigne, J.
name: Poortmans, J.
Publisher: name: WIP
Year: 2016
Subjects: New Materials and Concepts for Solar Cells and Modules
New Materials and Concepts for Modules

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 61-65
description: In a reconfigurable PV panel, the connections between groups of cells (cell-strings) can be rearranged
in order to increase the overall power output under non-uniform conditions. In a traditional PV panel, current
mismatch between the series-connected cells (due to irradiation differences of differential aging) limits the generated
power output by either reducing the overall current or by bypassing the substring containing the limiting cells. A
reconfigurable panel can respond to such a situation by changing the connections to a more favorable configuration,
allowing the majority of the cells to operate at their MPP. This paper elaborates on such a topology and its
components (high current switches, wiring). To get a clearer picture of the added value of such a reconfigurable
panel, a detailed energy yield analysis was performed which includes the performance of those added components.
The simulation model used for this analysis is calibrated with extensive measurement results. A comparison of that
model and corresponding measurements will be discussed. The analysis shows that a reconfigurable PV panel can
outperform the traditional panels when suboptimal conditions are predominant, as encountered for instance in BIPV.
As a demonstration of the principle, a small-scale prototype was created and will be presented in this paper.
Pseudo-laminar chaos from on-off intermittency
Creators: name: Müller-Bender, David
name: Valani, Rahil N.
name: Radons, Günter
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: In finite-dimensional, chaotic, Lorenz-like wave-particle dynamical systems one can find diffusive trajectories, which share their appearance with that of laminar chaotic diffusion [Phys. Rev. Lett. 128, 074101 (2022)] known from delay systems with lag-time modulation. Applying, however, to such systems a test for laminar chaos, as proposed in [Phys. Rev. E 101, 032213 (2020)], these signals fail such test, thus leading to the notion of pseudo-laminar chaos. The latter can be interpreted as integrated periodically driven on-off intermittency. We demonstrate that, on a signal level, true laminar and pseudo-laminar chaos are hardly distinguishable in systems with and without dynamical noise. However, very pronounced differences become apparent when correlations of signals and increments are considered. We compare and contrast these properties of pseudo-laminar chaos with true laminar chaos.
description: 14 pages, 7 figures; corrected typos, updated Ref. [62]
Behavior of the Newtonian potential for ghost-free gravity and singularity-free gravity
Creators: name: Edholm, James
name: Koshelev, Alexey S.
name: Mazumdar, Anupam
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we show that there is a universal prediction for the Newtonian potential for an infinite derivative, ghost-free, quadratic curvature gravity. We show that in order to make such a theory ghost-free at a perturbative level, the Newtonian potential always falls-off as 1/r in the infrared limit, while at short distances the potential becomes non-singular. We provide examples which can potentially test the scale of gravitational non-locality up to 0.004 eV.
description: 4 pages Accepted for publication by Physical Review D
Standardization of Infrared Imaging of Photovoltaic Plants in Operation
Creators: name: Schubert, E.
name: Siegfriedt, U.
name: Haselhuhn, R.
name: Weinreich, B.
name: Schauer, B.
name: Haas, R.
Publisher: name: WIP
Year: 2015
Subjects: OPERATIONS, PERFORMANCE AND RELIABILITY OF PHOTOVOLTAICS (FROM CELLS TO SYSTEMS)
Operation of PV Systems and Plants

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 1780-1782
description: For several years IR imaging with infrared cameras is not only used inside the laboratories, but is
becoming a popular method for quality control of PV modules and plants in operation. Nevertheless no national
(German) or international standards specifying the inspection method exists yet. This fact results in uncertainties
regarding the quality of the service for all parties involved. Furthermore the correct interpretation of PV
thermographic images often leads to discussions due to the lack of proper fault definitions. Consequently the
assessment of faults, especially the question of guarantee covers, may lead to conflicts between EPCs, financing
companies and module manufacturers.
In order to solve this situation DGS-Berlin started a German pre-standardization process on the topic in 2013. The
work group became a regular standardization group of the German Commission for Electrical, Electronic &
Information Technologies (DKE) of DIN [1] and VDE [2] in October 2014.
Commentary: Is the moon there if nobody looks -- Bell inequalities and physical reality
Creators: name: Gill, Richard D.
name: Lambare, Justo P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Marian Kupczynski(MK)is the author of a controversial paper published (2020) in the journal Frontiers in Physics. The work is built around a mathematical claim by MK which is actually false, and MK's logical reasoning around his claim is also incorrect. The same claim was made by him in several other recent papers published in other journals. A proof that the claimed result is false is the main content of our present "Comment". It is purely a mathematical counter-example to a mathematical claim in a number of MK's papers.
description: 4 pages. arXiv admin note: substantial text overlap with arXiv:2208.09930. The overlap is with a much longer preprint containing much extra material, and which the authors are submitting to another journal
White Bifacial Modules – Improved STC Performance Combined with Bifacial Energy Yield
Creators: name: Van Aken, B.B.
name: Okel, L.A.G.
name: Liu, J.
name: Luxembourg, S.L.
name: Van Roosmalen, J.A.M.
Publisher: name: WIP
Year: 2016
Subjects: New Materials and Concepts for Solar Cells and Modules
New Materials and Concepts for Modules

description: 32nd European Photovoltaic Solar Energy Conference and Exhibition; 42-47
description: We present a novel module design to increase the power output of bifacial modules without compromising the increased energy yield due to the bifaciality. This innovation includes a highly reflective interlayer between and around the bifacial solar cells and laminated between the front and rear encapsulant. Although bifacial
solar cells in modules with transparent front and rear sides can absorb light incident at either side, the transmission of (infrared) light through the rear side reduces the Pmax. The lower Wp rating is seen as a drawback for bifacial modules. The innovative white bifacial modules show almost the same front side Isc and Pmax as a monofacial module and a 2.2% higher Pmax, due to increased Isc, compared to transparent bifacial modules. The same increase is found for the rear side Pmax. The bifacial energy yield for white bifacial modules, due to the higher Pmax for both sides, is much higher than the slightly higher ground reflected “albedo” light of regular bifacial modules.
A seismic tsunami in the Irish annals, recorded at Iona in October 720
Creators: name: Mac Conamhna, Oisín A. P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: A historical record of a seismic tsunami is identified in the Irish annals for October 720 (all dates herein CE). It is contained in the earliest stratum of the annals, which survives in the form of a handful of iterated scribal copies of the foundational text of the tradition. This was compiled by the contemporary observation of noteworthy events for the years c. 563-740 at the monastery of Iona in the Scottish Hebrides. The 720 event is close outside the 2$σ$ radiocarbon terminus ante quem date ranges for tsunami deposits identified at Dury Voe (530-660) and Basta Voe (430-650) in the Shetland Isles, and is identified as a candidate progenitor. The possibility of the existence of associated tsunami deposits in Scotland or on the north coast of Ireland is highlighted.
description: 5 pages; v2, 5 pages, journal version as first submitted 06/11/2022, accepted unchanged 18/12/2022 (published submission metadata incorrect)
Cavity deformation and bubble entrapment during the impact of droplets on a liquid pool
Creators: name: Xu, Zhigang
name: Wang, Tianyou
name: Che, Zhizhao
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The impact of droplets on a liquid pool is ubiquitous in nature and important in many industrial applications. A droplet impacting on a liquid pool can result in the pinch-off of a regular bubble or entrap a large bubble under certain impact conditions. In this study, the cavity deformation and the bubble entrapment during the impact of droplets on a liquid pool are studied by combined experimental measurements and numerical simulations. The time evolution of the free surface profile obtained in the numerical simulation is in good agreement with the experimental results. The cavity created by the droplet impact affects the pinch-off of regular bubbles and the entrapment of large bubbles. The regular bubble pinch-off is the direct consequence of the capillary wave propagating downward along the interface of the cavity and merging at the bottom of the cavity. In contrast, the large bubble entrapment is due to the merging of the liquid crowns at the mouth of the cavity. Gravity and environmental pressure play important roles in cavity deformation and bubble entrapment after droplet impact on liquid pools. The maximum depth of the cavity decreases as the gravitational effect becomes stronger. The phenomenon of regular bubble pinch-off may disappear as the gravity decreases. We find that the regular bubble pinch-off can transform into large bubble entrapment when increasing environmental pressure. The size of the large bubble entrapped decreases with increasing the environmental pressure due to the larger difference in the pressure and the vorticity around the liquid crown at increased environmental pressure. Finally, the regime map of bubble entrapment after the droplet impact is obtained.
description: 13 pages, 13 figures
Determining Direct Irradiation on Surfaces in a Complex Urban Environment for BIPV Installation
Creators: name: Bheemireddy, R.
name: Van Swaaij, R.A.C.M.M.
name: Zeman, M.
Publisher: name: WIP
Year: 2015
Subjects: OPERATIONS, PERFORMANCE AND RELIABILITY OF PHOTOVOLTAICS (FROM CELLS TO SYSTEMS)
Operation of PV Systems and Plants

description: 31st European Photovoltaic Solar Energy Conference and Exhibition; 1760-1763
description: The number of installations of PV modules in residential areas has been increasing rapidly over the last
years. Often PV modules are installed on rooftops of buildings in a complex urban environment, in which nearby
buildings may cast shade on the modules for some period of time. In this contribution we present a method to
calculate the direct solar irradiation on building surfaces taking into account the shading. This irradiation is required
to work out the energy yield of PV modules mounted on these surfaces. The calculation is realized by taking the ratio
between the direct annual solar irradiation a surface receives taking shading into account, and the potential direct
annual solar irradiation without shading. We denote this ratio as the shading factor. For this method we make use of
freely available software with which position and height information of surrounding buildings can be constructed,
and with which the shade of these buildings on the building under investigation can be calculated. By applying this
method over the entire year, the shading factor can be obtained for all building surfaces. The method has been applied
to the building of the Faculty of Electrical Engineering, Mathematics and Computer Science of Delft University of
Technology. We demonstrate that the shading cast by buildings and other obstacles is calculated accurately.
Comparisons with measurements show that the method predicts the shading factor very well, allowing an accurate
estimation of PV system electricity yield.
Universal Preparability of States and Asymptotic Completeness
Creators: name: Gohm, Rolf
name: Haag, Florian
name: Kümmerer, Burkhard
Publisher: name: arXiv
Year: 2016
Subjects: subject: Operator Algebras (math.OA)
subject: Quantum Physics (quant-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 46L50, 46L51, 46L55, 54H20

description: We introduce a notion of universal preparability for a state of a system, more precisely: for a normal state on a von Neumann algebra. It describes a situation where from an arbitrary initial state it is possible to prepare a target state with arbitrary precision by a repeated interaction with a sequence of copies of another system. For $\mathcal{B}(\mathcal{H})$ we give criteria sufficient to ensure that all normal states are universally preparable which can be verified for a class of non-commutative birth and death processes realized, in particular, by the interaction of a micromaser with a stream of atoms. As a tool the theory of tight sequences of states and of stationary states is further developed and we show that in the presence of stationary faithful normal states universal preparability of all normal states is equivalent to asymptotic completeness, a notion studied earlier in connection with the scattering theory of non-commutative Markov processes.
description: 36 pages. To be published in "Communications in Mathematical Physics". v2 is the accepted authors' version. Compared to v1 there are additional explanations, in particular Remark 7.2