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Modeling, Systems engineering, and Project Management for Astronomy Viii 2018

作者： De Frondat Laadim, Fatima Jagourel, Pascal Frotin, Mickael Hammer, François Rodrigues, Myriam Puech, Mathieu Guinouard, Isabelle Chemla, Fanny Yang, Yanbin Fitzsimons, Ewan Parr-Burman, Phil Morris, Tim Dubbeldam, Marc Close, Madeline Middleton, Kevin Rousset, Gerard Kelz, Andreas Janssen, Annemieke Pragt, Johan Navarro, Ramon Larrieu, Marie El Hadi, Kacem Dohlen, Kjetil Dalton, Gavin Lewis, Ian GEPI Observatoire de Paris PSL University CNRS Place Jules Janssen Meudon92195 France UK Astronomy Technology Centre Science and Technology Facilities Council Royal Observatory Edinburgh Blackford Hill EdinburghEH9 3HJ United Kingdom Durham University-CfAI Department of Physics South Road DurhamDH1 3LE United Kingdom RALSPACE Science and Technology Facilities Council Rutherford Appleton Laboratory Harwell Campus Didcot OxfordshireOX11 0QX United Kingdom LESIA Observatoire de Paris PSL University CNRS Xxxx Place Jules Janssen Meudon92195 France AIP Leibniz-Institut für Astrophysik Potsdam An der Sternwarte 16 Potsdam14482 Germany NOVA NOVA Optical IR Instrumentation Group P.O. Box 2 AA Dwingeloo7990 Netherlands IRAP Université de Toulouse III-CNRS 9 avenue du Colonel Roche Toulouse Cedex 431028 France Aix Marseille Université-CNRS LAM Pôle de l'Étoile Site de Château-Gombert 38 rue F. Joliot-Curie Marseille Cedex 1313388 France University of Oxford Astrophysics Denys Wilkinson Building Keble Road OxfordOX1 3RH United Kingdom

ISBN: (数字)9781510619647

ISBN: (纸本)9781510619630

Product Assurance is an essential activity to support the design and construction of complex instruments developed for major scientific programs. The international size of current consortia in astrophysics, the ambitious and challenging developments, make the product assurance issues very important. The objective of this paper is to focus in particular on the application of Product Assurance Activities to a project such as MOSAIC, within an international consortium. The paper will also give a general overview on main product assurance tasks to be implemented during the development from the design study to the validation of the manufacturing, assembly, integration and test (MAIT) process and the delivery of the instrument. © 2018 SPIE.

关键词： Research laboratories

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The wavelength-shifting optical module for the IceCube Upgrade

arXiv

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arXiv 2021年

作者： Rack-Helleis, John Pollmann, Anna Rongen, Martin Abbasi, R. Ackermann, M. Adams, J. Aguilar, J.A. Ahlers, M. Ahrens, M. Alispach, C. Alves, A.A. Amin, N.M. An, R. Andeen, K. Anderson, T. Anton, G. Argüelles, C. Ashida, Y. Axani, S. Bai, X. Balagopal V., A. Barbano, A. Barwick, S.W. Bastian, B. Basu, V. Baur, S. Bay, R. Beatty, J.J. Becker, K.-H. Becker Tjus, J. Bellenghi, C. BenZvi, S. Berley, D. Bernardini, E. Besson, D.Z. Binder, G. Bindig, D. Blaufuss, E. Blot, S. Boddenberg, M. Bontempo, F. Borowka, J. Böser, S. Botner, O. Böttcher, J. Bourbeau, E. Bradascio, F. Braun, J. Bron, S. Brostean-Kaiser, J. Browne, S. Burgman, A. Burley, R.T. Busse, R.S. Campana, M.A. Carnie-Bronca, E.G. Chen, C. Chirkin, D. Choi, K. Clark, B.A. Clark, K. Classen, L. Coleman, A. Collin, G.H. Conrad, J.M. Coppin, P. Correa, P. Cowen, D.F. Cross, R. Dappen, C. Dave, P. de Clercq, C. DeLaunay, J.J. Dembinski, H. Deoskar, K. de Ridder, S. Desai, A. Desiati, P. de Vries, K.D. de Wasseige, G. de With, M. DeYoung, T. Dharani, S. Diaz, A. Díaz-Vélez, J.C. Dittmer, M. Dujmovic, H. Dunkman, M. DuVernois, M.A. Dvorak, E. Ehrhardt, T. Eller, P. Engel, R. Erpenbeck, H. Evans, J. Evenson, P.A. Fan, K.L. Fazely, A.R. Fiedlschuster, S. Fienberg, A.T. Filimonov, K. Finley, C. Fischer, L. Fox, D. Franckowiak, A. Friedman, E. Fritz, A. Fürst, P. Gaisser, T.K. Gallagher, J. Ganster, E. Garcia, A. Garrappa, S. Gerhardt, L. Ghadimi, A. Glaser, C. Glauch, T. Glüsenkamp, T. Goldschmidt, A. Gonzalez, J.G. Goswami, S. Grant, D. Grégoire, T. Griswold, S. Gündüz, M. Günther, C. Haack, C. Hallgren, A. Halliday, R. Halve, L. Halzen, F. Ha Minh, M. Hanson, K. Hardin, J. Harnisch, A.A. Haungs, A. Hauser, S. Hebecker, D. Helbing, K. Henningsen, F. Hettinger, E.C. Hickford, S. Hignight, J. Hill, C. Hill, G.C. Hoffman, K.D. Hoffmann, R. Hoinka, T. Hokanson-Fasig, B. Hoshina, K. Huang, F. Huber, M. Huber, T. Hultqvist, K. Hünnefeld, M. Institute for Physics JGU Mainz MainzD-55122 Germany Department of Physics Bergische Universität Wuppertal Gaußstraße 20 Wuppertal Germany III. Physikalisches Institut RWTH Aachen University AachenD-52056 Germany Department of Physics University of Adelaide Adelaide5005 Australia Dept. of Physics and Astronomy University of Alaska Anchorage 3211 Providence Dr. AnchorageAK99508 United States Dept. of Physics University of Texas at Arlington 502 Yates St. Science Hall Rm 108 Box 19059 ArlingtonTX76019 United States CTSPS Clark-Atlanta University AtlantaGA30314 United States School of Physics and Center for Relativistic Astrophysics Georgia Institute of Technology AtlantaGA30332 United States Dept. of Physics Southern University Baton RougeLA70813 United States Dept. of Physics University of California BerkeleyCA94720 United States Lawrence Berkeley National Laboratory BerkeleyCA94720 United States Institut für Physik Humboldt-Universität zu Berlin BerlinD-12489 Germany Fakultät für Physik & Astronomie Ruhr-Universität Bochum BochumD-44780 Germany Université Libre de Bruxelles Science Faculty CP230 BrusselsB-1050 Belgium Dienst ELEM BrusselsB-1050 Belgium Department of Physics and Laboratory for Particle Physics and Cosmology Harvard University CambridgeMA02138 United States Dept. of Physics Massachusetts Institute of Technology CambridgeMA02139 United States Dept. of Physics and Institute for Global Prominent Research Chiba University Chiba263-8522 Japan Department of Physics Loyola University Chicago ChicagoIL60660 United States Dept. of Physics and Astronomy University of Canterbury Private Bag 4800 Christchurch New Zealand Dept. of Physics University of Maryland College ParkMD20742 United States Dept. of Astronomy Ohio State University ColumbusOH43210 United States Dept. of Physics and Center for Cosmology and Astro-Particle Physics Ohio State University ColumbusOH43210 United States Niels Bohr Institute

The Wavelength-shifting optical Module (WOM) is a novel optical sensor that uses wavelength shifting and light guiding to substantially enhance the photosensitive area of UV optical modules. It has been designed for the IceCube Upgrade, a seven-string extension of the IceCube detector planned for the 2022/2023 South Pole deployment season. The WOM consists of a hollow quartz cylinder coated in wavelength shifting paint which serves as detection area and has two photomultipliers (PMTs) attached to the end faces. The light-collecting tube increases the effective photocathode area of the PMTs without producing additional dark current, making it suitable for low-signal, low-noise applications. We report on the design and performance of the WOM with a focus on the 12 modules in production for deployment in the IceCube Upgrade. While the WOM will be deployed in IceCube, its design is applicable to any large-volume particle detector based on the detection of Cherenkov light. Copyright © 2021, The Authors. All rights reserved.

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design of wide bandgap (1.7 eV-1.9 eV) iii-V dilute nitride quantum-engineered solar cells for tandem application with silicon 7

Design of wide bandgap (1.7 eV-1.9 eV) III-V dilute nitride ...

引用

Conference on Physics, Simulation, and Photonic engineering of Photovoltaic Devices VII

作者： Kharel, Khim Freundlich, Alexandre Univ Houston Dept Phys Houston TX 77204 USA

ISBN: (数字)9781510615403

ISBN: (纸本)9781510615403

Here we study photovoltaic properties of GaInPNAs based quantum well and superlattice solar cells, that are either strain-balanced or lattice matched to silicon and evaluate their potential towards the development of high-efficiency tandem operating in conjunction with a silicon bottom cell. Quaternary dilute nitride compound semiconductors like GaAsyP1-x-yNx and Ga1-zInzP1-xNx are lattice matched with silicon at y=4.7*x-0. 1, z=2.2*x-0.044 and have direct bandgap (with N>0.6%);thus, allowing monolithic integration of iii-V optoelectronics with silicon technology and iii-V/Si tandem solar cells. Applying eight band k.p strained Hamiltonian, for both tensile and compressive strain, and Band Anti-crossing (BAC) model to the conduction band, in order to account for small amounts of nitrogen impurities, the electronic band structure and dispersion relation of these alloys can be determined. With small amount of nitrogen (<5%), bandgaps of these alloys lattice matching with silicon fulfil the optimum bandgap (1.7-1.9) eV requirement for iii-V/Si tandem solar cell. Confinement energies in quantum structures can be computed using the transfer matrix approach. optical absorption is evaluated by taking into account the inter band transitions in the quantum well and barrier region, including excitonic transitions, using the fermi golden rule for both TE and TM polarization of incident light. Using these properties, we can determine whether the possible integration of p-i-n MQWs (or SL) solar cell on silicon is favorable by evaluating the predicted quantum efficiency and photo-current. The designs for a tandem iii-V-N/Si represent an opportunity for achieving practical efficiencies of more than 30% under AM 1.5G spectrum.

关键词： Wide bandgap iii-V/Si tandems dilute nitride materials quantum well & super-lattice solar cells silicon photovoltaic technologies

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CLOUD DETECTION by FUSING MULTI-SCALE CONVOLUTIONAL FEATURES

CLOUD DETECTION by FUSING MULTI-SCALE CONVOLUTIONAL FEATURES

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2018 ISPRS TC iii Mid-Term Symposium on developments, Technologies and Applications in Remote Sensing

作者： Li, Zhiwei Shen, Huanfeng Wei, Yancong Cheng, Qing Yuan, Qiangqiang School of Resource and Environmental Sciences Wuhan University Wuhan China State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing Wuhan University Wuhan China School of Urban Design of Wuhan University Wuhan University Wuhan China School of Geodesy and Geomatics Wuhan University Wuhan China Collaborative Innovation Center of Geospatial Technology Wuhan China

Clouds detection is an important pre-processing step for accurate application of optical satellite imagery. Recent studies indicate that deep learning achieves best performance in image segmentation tasks. Aiming at boosting the accuracy of cloud detection for multispectral imagery, especially for those that contain only visible and near infrared bands, in this paper, we proposed a deep learning based cloud detection method termed MSCN (multi-scale cloud net), which segments cloud by fusing multi-scale convolutional features. MSCN was trained on a global cloud cover validation collection, and was tested in more than ten types of optical images with different resolution. Experiment results show that MSCN has obvious advantages over the traditional multi-feature combined cloud detection method in accuracy, especially when in snow and other areas covered by bright non-cloud objects. Besides, MSCN produced more detailed cloud masks than the compared deep cloud detection convolution network. The effectiveness of MSCN make it promising for practical application in multiple kinds of optical imagery. © Authors 2018.

关键词： Cloud detection Convolutional feature fusion Deep learning MSCN Multi-scale

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Development of surgical binoculars on the basis of polymeric lenses 18

Development of surgical binoculars on the basis of polymeric...

引用

Conference on current developments in Lens design and optical engineering XViii

作者： Voznesenskaya, Anna Andreev, Lev Ekimenkova, Alisa ITMO Univ 49 Kronverksky Av St Petersburg 197101 Russia

The basis of this work is a modification of the modern design of surgical binoculars based on substitution of mineral glasses with polymer lenses. Aberration analyses of the proposed systems is shown.

ISBN: (纸本)9781510612082;9781510612075

关键词： polymeric lenses medical optics surgical binoculars optical system design ergonomics

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Introducing the quantum efficiency of fluorescence of SCHOTT optical glasses 18

Introducing the quantum efficiency of fluorescence of SCHOTT...

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Conference on current developments in Lens design and optical engineering XViii

作者： Jedamzik, Ralf Elsmann, Frank Engel, Axel Petzold, Uwe Pleitz, Jana Schott AG D-55122 Mainz Germany

ISBN: (纸本)9781510612082;9781510612075

The fluorescence of optical glasses is a property that needs to be taken into account in optical designs for life science applications. Many optical glasses from SCHOTT show a very low intrinsic or auto-fluorescence. The fluorescence depends mainly on the applied excitation wavelength and the optical glass type. The fluorescence of optical glasses is usually defined as the quotient of the integral of the emission spectrum with the integral of the emission spectrum of a reference glass. This definition does not give any information about the actual quantum efficiency of the fluorescence. In this presentation recent data on the integral fluorescence of SCHOTT optical glasses are presented. Additionally, first measurements of the quantum efficiency of SCHOTT optical glasses are presented and compared to the standard method.

关键词： Glasses Luminescence Quantum efficiency Biomedical optics Life sciences Space telescopes Visual optics Lithography Microscopy optical design

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optical schemes for compact space objectives 18

Optical schemes for compact space objectives

引用

Conference on current developments in Lens design and optical engineering XViii

作者： Butylkina, K. D. Romanova, G. E. Bakholdin, A., V ITMO Univ 49 Kronverksky Pr St Petersburg 197101 Russia

ISBN: (纸本)9781510612082;9781510612075

The most widely used objectives for the space optics are mirror and catadioptric systems. We have considered several scheme types including the three-mirror schemes both of the Korsch-type and the systems without an intermediate image and compare them from the point of view of packaging conditions, image quality and achievable characteristics. The two-mirror systems with lens correctors are also analyzed. The optical layout and parameters of several variants are presented and the image quality is shown.

关键词： three-mirror systems Korsch scheme lens correctors optical systems design

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Achieving linearity with an optical quadrant detector tracking system 18

Achieving linearity with an optical quadrant detector tracki...

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Conference on current developments in Lens design and optical engineering XViii

作者： Doherty, Victor J. Aouani, Dina Eidolon Opt LLC 3 Erie Dr Natick MA 01760 USA

ISBN: (纸本)9781510612082;9781510612075

Conventional round spot quadrant detector trackers are inherently non-linear. This non-linearity requires multiple iterations to converge onto perfect alignment with the object tracked. We created a system that generates a square spot. The convolution of a square spot with a circle, generated by the quadrant detector, allows this spot to achieve perfect alignment in one iteration. This invention is thus essential to any system that requires speed and accuracy. In this paper, we introduce the theory behind the square spot as well as the design of our linear optical quadrant detector tracking technology.

关键词： Quadrant Detector optical Tracking Sun Tracking Solar Surgery Square Spot

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optical spherometer for measuring large curvature radii of convex surfaces 18

Optical spherometer for measuring large curvature radii of c...

引用

Conference on current developments in Lens design and optical engineering XViii

作者： Alvarado Martinez, Jorge de Jesus Vazquez y Montiel, Sergio Camacho Bello, Cesar Joel Univ Politecn Tulancingo Tulancingo Hgo Mexico Univ Interserrana Estado Puebla Puebla Mexico

ISBN: (纸本)9781510612082;9781510612075

Measuring large curvature radii of convex surfaces with high precision is a challenge because the spherometer's focus must be positioned at the apex of the surface and at the center of curvature of the surface by moving the surface or the spherometer. If the radius of curvature is larger than the back focus of spherometer, then measurement is not possible. In this work, we propose to use the FOCOIVA system1 to move the focus of the spherometer in longitudinal way without modifying the f number by moving two lenses inside it, with this mechanism it is possible to measure radii of curvature of several meters in length. The curves of movement of the lenses and the optical parameters of the lenses that compose the spherometer are presented.

关键词： optical design spherometer radii of curvature convex surfaces

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optical design of an athermalised dual field of view step zoom optical system in MWIR 18

Optical design of an athermalised dual field of view step zo...

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Conference on current developments in Lens design and optical engineering XViii

作者： Kucukcelebi, Doruk Roketsan Kemalpasa Mahallesi Sehit Yuzbasi Adem Kutlu Soka TR-06780 Ankara Turkey

ISBN: (纸本)9781510612082;9781510612075

In this paper, the optical design of an athermalised dual field of view step zoom optical system in MWIR (3.7 mu m-4.8 mu m) is described. The dual field of view infrared optical system is designed based on the principle of passive athermalization method not only to achieve athermal optical system but also to keep the high image quality within the working temperature between -40 degrees C and + 60 degrees C. The infrared optical system used in this study had a 320 pixel x 256 pixel resolution, 20 mu m pixel pitch size cooled MWIR focal plane array detector. In this study, the step zoom mechanism, which has the axial motion due to consisting of a lens group, is considered to simplify mechanical structure. The optical design was based on moving a single lens along the optical axis for changing the optical system's field of view not only to reduce the number of moving parts but also to athermalize for the optical system. The optical design began with an optimization process using paraxial optics when first-order optics parameters are determined. During the optimization process, in order to reduce aberrations, such as coma, astigmatism, spherical and chromatic aberrations, aspherical surfaces were used. As a result, athermalised dual field of view step zoom optical design is proposed and the performance of the design using proposed method was verified by providing the focus shifts, spot diagrams and MTF analyzes' plots.

关键词： Dual field of view step zoom optical design paraxial optics athermalization Mid Wave Infrared (MWIR)

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