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conference on Adaptive Optics Systems VI

作者： Guyon, Olivier Sevin, Arnaud Gratadour, Damien Bernard, Julien Ltaief, Hatem Sukkari, Dalal Cetre, Sylvain Skaf, Nour Lozi, Julien Martinache, Frantz Clergeon, Christophe Norris, Barnaby Wong, Alison Males, Jared Natl Inst Nat Sci Astrobiol Ctr Tokyo Japan Univ Arizona Steward Observ Tucson AZ 85721 USA Natl Inst Nat Sci Natl Astron Observ Japan Subaru Telescope 650 N Aohoku Pl Hilo HI 96720 USA Observ Paris Paris France King Abdullah Univ Sci & Technol Thuwal Saudi Arabia Keck Observ Waimea HI USA Observ Cote Azur Nice France Univ Sydney Sydney NSW Australia

ISBN: (数字)9781510619609

ISBN: (纸本)9781510619609

The compute and control for adaptive optics (cacao) package is an open-source modular software environment for real-time control of modern adaptive optics system. By leveraging many-core CPU and GPU hardware, it can scale up to meet the demanding computing requirements of current and future high frame rate, high actuator count adaptive optics (AO) systems. cacao's modular design enables both simple/barebone operation, and complex full-featured AO control systems. cacao's design is centered on data streams that hold real-time data in shared memory along with a synchronization mechanism for computing processes. Users and programmers can add additional features by coding modules that interact with cacao's data stream format. We describe cacao's architecture and its design approach. We show that accurate timing knowledge is key to many of cacao's advanced operation modes. We discuss current and future development priorities, including support for machine learning to provide real-time optimization of complex AO systems.

关键词： Adaptive Optics High Performance Computing Wavefront control

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Designing and prototyping the control system for the Cherenkov telescope Array 18

Designing and prototyping the control system for the Cherenk...

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18th International Workshop on advanced Computing and Analysis Techniques in Physics Research (ACAT)

作者： Oya, I. Fuessling, M. Antonino, P. O. Araya, M. Borkowski, J. Bulgarelli, A. Castroviejo, J. Colome, J. Conforti, V. Garcia-Piquer, A. Guardia, J. Hagge, L. Lyard, E. Morgenstern, A. Mayer, M. Melkumyan, D. Murach, T. Pizarro, L. Sadeh, I. Schmidt, T. Schwanke, U. Spengler, G. Schwarz, J. Tosti, G. Walter, R. Wegner, P. DESY Zeuthen Germany Fraunhofer IESE Kaiserslautern Germany UTFSM Valparaiso Chile CAMK Torun Poland IASF Bologna Bologna Italy CSIC IEEC Madrid Spain DESY Hamburg Germany Univ Geneva Dept Astron Geneva Switzerland Humboldt Univ Berlin Germany Osserv Astron Brera INAF Milan Italy Univ Perugia Perugia Italy

The Cherenkov telescope Array (CTA) is the next-generation atmospheric Cherenkov gamma-ray observatory. The Observation Execution System (OES) team within the CTA project is designing and prototyping the software to execute the observations and to handle the acquisition of scientific data at GB/s rates. In this contribution we show the OES system as it is being designed using the Unified Modeling Language (UML) and Systems Modeling (SysML) formalisms. In addition, we present the status of the associated prototyping activities.

关键词： Gamma rays

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MICADO instrument control approach in context of ESO ELT standards. 7

MICADO instrument control approach in context of ESO ELT sta...

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conference on Ground-Based and Airborne instrumentation for Astronomy VII

作者： Haeuser, Marco Schlichter, Joerg Hess, Hans-Joachim Kravcar, Helmut Richter, Josef Wegner, Michael Univ Sternwarte Munchen Scheinerstr 1 D-81679 Munich Germany

ISBN: (数字)9781510619586

ISBN: (纸本)9781510619586

MICADO will equip the ELT with a first light capability for diffraction limited imaging at near-infrared wavelengths. The instrument's observing modes focus on various flavours of imaging, including astrometric, high contrast, and time resolved. There is also a single object spectroscopic mode optimised for wavelength coverage at moderately high resolution.(1) Due to ESO's technology standards evolution from VLT to ELT, MICADO will manifest the combined, PLC based soft- and hardware control. The evolution of ESO's technology design guidelines is on the one hand triggered by the ongoing developments in modern days industry and consumer technology. On the other hand, ELT's sheer dimensions request increasingly complex and smart solutions onwards controlling and monitoring such huge instruments. ESO's control concept is based on a two layer approach: PLCs are responsible for low-level hardware control (in a real-time fashion, if necessary), while software running on a Linux workstation implements the astronomic business logic of the control system. Development is eased by the fact that ESO delivers libraries for the control of many standard hardware components. A very interesting feature of this approach is the possibility to run C++ code natively inside a PLC real-time environment. This will be used for the control of complex mechanisms like the MICADO Atmoshperic Dispersion Corrector (ADC). This contribution provides an overview of the key functionality of the instrument focusing on the mechanisms inside the cryostat, and an overview of the cryogenic control. Because of hardware and cryogenic safety reasons, the cryostat control PLC system will be designed as a closed PLC based control system. Hence commands will only be accepted from a human machine interface located next to the cryostat itself. All cryostat parameters and according sensor readings will be published via OpcUA, allowing for full remote cryostat monitoring. In contrast, the instrument control PLC syst

关键词： ESO ELT MICADO cryo-control drive-control instrument-control Beckhoff

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Apodized Pupil Lyot Coronagraphs designs for future segmented space telescopes

Apodized Pupil Lyot Coronagraphs designs for future segmente...

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conference on Space telescopes and instrumentation - Optical, Infrared, and Millimeter Wave

作者： St Laurent, Kathryn Fogarty, Kevin Zimmerman, Neil T. N'Diaye, Mamadou Stark, Christopher C. Mazoyer, Johan Sivaramakrishnan, Anand Pueyo, Laurent Shaklan, Stuart Vanderbei, Robert Soummer, Remi Space Telescope Sci Inst 3700 San Martin Dr Baltimore MD 21218 USA NASA Goddard Space Ctr 8800 Greenbelt Rd Greenbelt MD 20771 USA Observ Nice Cote Azur Blvd Observ F-06304 Nice France Johns Hopkins Univ 3400 North Charles St Baltimore MD 21218 USA Jet Prop Lab 4800 Oak Grove Dr Pasadena CA 91109 USA Princeton Univ 98 Charlton St Princeton NJ 08540 USA

ISBN: (数字)9781510619500

ISBN: (纸本)9781510619500

A coronagraphic starlight suppression system situated on a future flagship space observatory offers a promising avenue to image Earth-like exoplanets and search for biomarkers in their atmospheric spectra. One NASA mission concept that could serve as the platform to realize this scientific breakthrough is the Large UV/Optical/IR Surveyor (LUVOIR). Such a mission would also address a broad range of topics in astrophysics with a multi-wavelength suite of instruments. The apodized pupil Lyot coronagraph (APLC) is one of several coronagraph design families that the community is assessing as part of NASAs Exoplanet Exploration Program Segmented aperture coronagraph design and analysis (SCDA) team. The APLC is a Lyot-style coronagraph that suppresses starlight through a series of amplitude operations on the on-axis field. Given a suite of seven plausible segmented telescope apertures, we have developed an object-oriented software toolkit to automate the exploration of thousands of APLC design parameter combinations. This has enabled us to empirically establish relationships between planet throughput and telescope aperture geometry, inner working angle, bandwidth, and contrast level. In parallel with the parameter space exploration, we have investigated several strategies to improve the robustness of APLC designs to fabrication and alignment errors. We also investigate the combination of APLC with wavefront control or complex focal plane masks to improve inner working angle and throughput. Preliminary scientific yield evaluations based on design reference mission simulations indicate the APLC is a very competitive concept for surveying the local exoEarth population with a mission like LUVOIR.

关键词： Segmented telescope coronagraph exoplanet high-contrast imaging LUVOIR

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Developing a Preliminary Design of FPGA Based control Rod System for a High Temperature Experimental Power Reactor

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Journal of Physics: conference Series 2021年第1期2048卷

作者： Sigit Santoso Tulis Jojok Suryono Restu Maerani Dian Fitri Atmoko Auralius Manurung Center for Nuclear Reactor Technology and Safety-BATAN Puspiptek Area Setu South Tangerang I5310 Indonesia Center for Engineering of Nuclear Facility-BATAN 3 Puspiptek Area Setu South Tangerang I5310 Indonesia Department of Mechanical Engineering Universitas Pertamina Jakarta Selatan 12220 Indonesia

An Experimental Power Reactor (Reaktor Daya Experimental, RDE) which is based on high-temperature gas-cooled reactor technology is being developed in Indonesia during recent years. As an advanced reactor design type, a fully digital- based I&C would be employed in the design of RDE reactor monitoring and control including the control rod drive system. On the other hand, some of the major issues discussed in the licensing process for such digital I&C are the possibility that a common cause failure can undermine the reactor protection function and the vulnerable to cyber-attack possibility. Therefore, a number of the defense in depth measures need to be applied to I&C systems design help to mitigate those issues. This paper discusses the design process for employing FPGA based digital system in the control rod drive system of RDE. The methodology follows the life cycle process of instrumentation and control architecture and software development which is presented in the V shape model. A generic control rod system prototype which consists of a control rod motor driver, control rod handling system, magnetic handling, and the motor system was prepared and would be used as an object in the FPGA implementation. The result of the process design conducted in this current phase study shows the implementation of FPGA-based digital technology will enable to minimize the lack of a digital based control rod drive system. However, appropriate testing and verification of the design developed are required to ensure better performance of the control rod drive system.

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Visiting instruments as part of a strategic plan 7

Visiting instruments as part of a strategic plan

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conference on Observatory Operations - Strategies, Processes, and Systems VII

作者： Peck, Alison B. Adamson, Andrew J. Kleinman, Scot J. Ferrarese, Laura Goodsell, Stephen J. Kissler-Patig, Markus Gemini Observ 670 N Aohoku Pl Hilo HI 96720 USA Univ Durham Stockton Rd Durham DH1 3LE England European Southern Observ Karl Schwrzschild Str 2 D-85748 Garching Germany

ISBN: (数字)9781510619623

ISBN: (纸本)9781510619623

The Gemini Observatory has a strong commitment to meeting the user community's scientific needs. This means providing a strong suite of instruments with broad applicability: those that can handle the largest share of science return as well as more unique instruments, some of which might have narrow scope but potentially high impact. Recognizing that building a new Facility Instrument is expensive and typically takes more than 5 years, we have developed the Visiting Instrument Program, which allows investigators to bring their own innovative instruments to either Gemini telescope. To be accepted, all visiting instruments must demonstrate their competitiveness via the regular time allocation process. The majority of successful instruments are made available to our broader user community within one semester of being commissioned at the telescope. Visiting Instruments are operated by the instrument team while on Gemini, and are not fully integrated to Gemini control and data reduction software. The instrument team is responsible for providing reduced data and/or a data reduction pipeline to PIs when the instrument is made available to the community, as well as providing technical assessments of any community proposals. In any given semester, as many as three Visiting Instruments at each telescope might be listed in the Call for Proposals. The availability of the instrument at either Gemini telescope is determined by popularity with proposers, by pressure from other instruments and programs, and of course by the willingness of the instrument team to allow the use of the instrument at Gemini.

关键词： OIR instrumentation visiting instruments diverse capabilities flexible operations

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GIANO-B Online Data Reduction software at the TNG 3

GIANO-B Online Data Reduction Software at the TNG

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conference on Advances in Optical and Mechanical Technologies for telescopes and instrumentation III

作者： Harutyunyan, Avet Rainer, Monica Hernandez, Nauzet Oliva, Ernesto Guerra, Jose Lodi, Marcello San Juan, Jose Bignamini, Andrea Ghedina, Adriano Ghinassi, Francesca Molinari, Emilio Benatti, Serena Carleo, Ilaria Claudi, Riccardo Micela, Giuseppina Tozzi, Andrea Baffa, Carlo Baruffolo, Andrea Biliotti, Valdemaro Buchschacher, Nicolas Cecconi, Massimo Cosentino, Rosario Falcini, Gilberto Fantinel, Daniela Fini, Luca Galli, Alberto Giani, Elisabetta Gonzalez, Carlos Gonzalez-Alvarez, Esther Gonzalez, Manuel Gratton, Raffaele Hernandez Diaz, Marcos Iuzzolino, Marcella Malavolta, Luca Maldonado, Jesus Origlia, Livia Poretti, Ennio Perez Ventura, Hector Puglisi, Alfio Riverol, Carlos Riverol, Luis Sanna, Nicoletta Scuderi, Salvatore Seeman, Ulf Sozzetti, Alessandro Sozzi, Mauro Fdn Galileo Galilei INAF Rambla Jose Ana Fernandez Perez 7 Brena Baja 38712 TF Spain Osserv Astrofis Arcetri INAF Largo Enrico Fermi 5 I-50125 Florence Italy Osserv Astron Brera INAF Via Emilio Bianchi 46 I-23807 Merate LC Italy Osserv Astron Trieste INAF Via GB Tiepolo 11 I-34143 Trieste Italy Osservatorio Astron Cagliari INAF Via Sci 5 I-09047 Selargius CA Italy Osserv Astron Padova INAF Vicolo Osservatorio 5 I-35122 Padua Italy Univ Padua Via 8 Febbraio 2 I-35122 Padua Italy Osserv Astron Palermo INAF Piazza Parlamento 1 I-90134 Palermo Italy Univ Geneva 24 Rue Gen Dufour CH-1211 Geneva 4 Switzerland Officina Stellare Via Tecn 87-89 I-36030 Sarcedo VI Italy Osservatorio Astron Bologna INAF Via Gobetti 93-3 I-40129 Bologna Italy Osserv Astrofis Catania INAF Via S Sofia 78 I-95123 Catania Italy Georg August Univ Gottingen Inst Astrophys Friedrich Hund Pl 1 D-37077 Gottingen Germany Osservatorio Astrofis Torino INAF Via Osservatorio 20 I-10025 Pino Torinese TO Italy

ISBN: (数字)9781510619661

ISBN: (纸本)9781510619661

GIANO-B is the high resolution near-infrared (NIR) spectrograph of the Telescopio Nazionale Galileo (TNG), which started its regular operations in October 2017. Here we present GIANO-B Online Data Reduction software (DRS) operating at the telescope. GIANO-B Online DRS is a complete end-to-end solution for the spectrograph real-time data handling. The Online DRS provides management, processing and archival of GIANO-B scientific and calibration data. Once the instrument control software acquires the exposure ramp segments from the detector, the DRS ensures the complete data flow until the final data products are ingested into the science archive. A part of the Online DRS is GOFIO software, which performs the reduction process from ramp-processed 2D spectra to extracted and calibrated 1D spectra. A User Interface (UI) developed as a part of the Online DRS provides basic information on the final reduced data, thus allowing the observer to take decisions in real-time during the night and adjust the observational strategy as needed.

关键词： NIR high resolution spectroscopy data reduction software data processing python

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MTCA control and data acquisition platform for Plasma Diagnostics

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JOURNAL OF instrumentation 2019年第11期14卷

作者： Sousa, J. Correia, M. Pereira, R. C. Rodrigues, A. P. Carvalho, P. F. Combo, A. Santos, B. Carvalho, B. B. Batista, A. J. N. Dias, R. Goncalves, B. Univ Lisbon Inst Plasmas & Fusao Nucl Inst Super Tecn Av Rovisco Pais 1 P-1049001 Lisbon Portugal

The advanced Telecommunications Computing Architecture (ATCA) instrumentation platform for fusion control and diagnostics developed at IST, is being extended with a Micro Telecommunications Computing Architecture (MTCA) control and data acquisition platform, still able to maintain performance characteristics in speed, channel density and availability of ATCA, at a cost suitable for smaller systems. software and firmware have been ported to MTCA using mostly in-house developed hardware, preserving many of ATCA's benefits in performance in a smaller form-factor. The first instance of the proposed platform comprises a MTCA 1U shelf with 6 advanced Mezzanine Card (AMC) slots, MTCA Carrier Hub (MCH) module, AMC to Field-programmable Gate Array (FPGA) Mezzanine Card (FMC) carrier modules, 500 MSPS to 2 GSPS ADC FMC modules, timing and synchronization input/output (IO) module, or other Commercial Off-The-Shelf (COTS) modules. Data is handled by the MCH, featuring PCIe Gen 3 switching to a host computer, as well as performing clock distribution and Intelligent Platform Management Interface (IPMI) based hardware management for high availability. This compact, flexible and autonomous or scalable platform may either integrate a large-experiment system infrastructure, as well as being configured as a lower-cost, self-contained platform for smaller experiments or development and testbench purposes. The focus of this paper is the development of the MCH MTCA.0 module, which is key to introduce the platform architecture.

关键词： Modular electronics Plasma diagnostics - interferometry, spectroscopy and imaging Digital electronic circuits instrumentation for particle accelerators and storage rings - low energy (linear, accelerators, cyclotrons, electrostatic accelerators)

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Mechanical Systems Performance of the HET Wide-Field Upgrade 7

Mechanical Systems Performance of the HET Wide-Field Upgrade

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conference on Ground-based and Airborne telescopes VII

作者： Good, John M. Leck, Ron Ramsey, Jason Drory, Niv Hill, Gary Fowler, James Kriel, Herman Landriau, Martin Univ Texas Austin McDonald Observ 2515 SpeedwayRLM 13-116C1402 Austin TX 78712 USA Univ Texas McDonald Observ 82 Mt Locke Rd Mcdonald Observ TX 79734 USA Lawrence Berkeley Natl Lab 1 Cyclotron Rd Mailstop 50R5008 Berkeley CA 94720 USA

ISBN: (数字)9781510619548

ISBN: (纸本)9781510619548

We have completed a major Wide Field Upgrade (WFU) of the Hobby-Eberly telescope (HET) and reentered scheduled queue science operations in mid-2016. This paper assesses the performance of the various mechanical systems which were upgraded, or added to HET, including the telescope Structure, the star Tracker (aka, WFU Tracker), Prime Focus Instrument Package (PFIP), and VIRUS Support Structure (VSS). The upgrades were required to increase the field of view of HET, from 4 arc-minutes, to 22 arc-minutes, increasing the observed area of sky by 30 times the original FoV. In the process, the total weight of the system increased from 100 tons, to 153 tons, requiring a complete overhaul of most of the mechanical, servo, and control systems. The new 13-axis Tracker and control system was tested extensively prior to shipping and installation, and followed up with laser tracker measurements, which brought the tracking system to within 1 arc-minute RMS pointing, and followed up with on-sky derived mount-models, which has improved the pointing and guiding to within 12 arc-seconds RMS, and 0.1 arc-seconds, respectively. A completely new structural support system was implemented to house and connect a total of 156 VIRUS spectrographs, plus 4 new Low-Resolution Spectrographs (LRS2). The VIRUS units are arrayed in two large enclosures mounted to either side of the telescope. Each enclosure is approximately 1.3m deep x 6.7m wide x 6.2m tall and weighs 38 tons fully loaded. This structure is attached to HET in a way that allows it to be positioned by, but stand independent of, the HET during observation. As commissioning has transitioned to phased-science/engineering operations, and subsequently, to science operation, the tracking software and mechanical performance of the Tracker and VSS have been improved to meet specification. Performance data and lessons learned are provided.

关键词： Hobby Eberly telescope WFU Tracker HETDEX VIRUS Wide Field Corrector Mount Modeling control Systems

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BeagleBone black for embedded measurement and control applications 125

BeagleBone black for embedded measurement and control applic...

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125th ASEE Annual conference and Exposition

作者： Strom, Stephen A. Loker, David R. Pennsylvania State University Electrical and Computer Engineering Technology Department Erie United States

Lower-division courses in an Electrical and Computer Engineering Technology (ECET) program provide the background needed for introductory programming and embedded microprocessors. A C/C++ programming course emphasizes the software development process, language constructs, algorithms, and structured procedural design and possibly object oriented design. A microprocessor based course covers software design in C for input and output interfacing for various applications. For IoT applications, there is a need in upper-division courses to cover new, powerful, and inexpensive system-on-a-chip (SoC) devices that are capable of performing the responsibilities of a computer on a single chip and can be used in a variety of courses. One such device, the BeagleBone Black (BBB), is an open-source Linux platform that contains a variety of busses (SPI, I2C, CAN), general purchase I/O pins, serial ports, PWM outputs, and analog inputs. The intent of this paper is to demonstrate the usage of the BBB in a variety of upper division courses, illustrating several applications. Some potential courses include measurements and instrumentation, wireless communications, control systems, and advanced microprocessors. Labs covered with the BBB include digital and analog I/O operations, UART interface, TCP/IP interface, touch screen display, and student chosen end-of-semester lab projects. Programming is achieved using C++ and Python. Several of these labs will be discussed in this paper, along with schematics, configurations, and results. © American Society for Engineering Education, 2018.

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