Mr. Avishai Filis Profile

Avishai Filis

Marketing Manager at RICOR Cryogenic & Vacuum Systems

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Author

Publications (17)

Proceedings Article | 7 June 2024 Presentation + Paper

Effective end-of-lifetime prediction of rotary Stirling coolers based on ultrasonic structure born sound analysis

M. Hübner, O. Tscherwitschke, R. Hanslick, O. Sela, A. Filis, S. Lavenda

Proceedings Volume 13046, 130461L (2024) https://doi.org/10.1117/12.3013624

KEYWORDS: Sensors, Mechanics, Microelectromechanical systems, Design, Ultrasonics, Failure analysis, Histograms, Analog to digital converters, Signal processing, Pulse signals

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Proceedings Article | 27 May 2022 Presentation + Paper

Ricor's advanced rotary and linear miniature cryocoolers for HOT IR detectors

Avishai Filis, Meir Carmiel, Ilan Nachman

Proceedings Volume 12107, 121070K (2022) https://doi.org/10.1117/12.2618471

KEYWORDS: Cryocoolers, Acoustics, Infrared detectors, Temperature metrology, Head, Sensors, Excel, Yield improvement, Staring arrays, Standards development

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Proceedings Article | 7 May 2019 Paper

Ricor's advanced rotary cryocooler for HOT IR detectors

Oron Ben David, Meir Carmiel, Victor Segal, Igor Vainshtein, Sergey Riabzev, Avishai Filis

Proceedings Volume 11002, 110022M (2019) https://doi.org/10.1117/12.2517715

KEYWORDS: Sensors, Temperature metrology, Acoustics, Thermography, Interfaces, Connectors, Manufacturing

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Proceedings Article | 9 May 2018 Paper

Overview of RICOR's reliability theoretical analysis, accelerated life demonstration test results and verification by field data

Igor Vainshtein, Shlomi Baruch, Itai Regev, Victor Segal, Avishai Filis, Sergey Riabzev

Proceedings Volume 10626, 106260G (2018) https://doi.org/10.1117/12.2309549

KEYWORDS: Cryocoolers, Reliability, Failure analysis, Staring arrays, Accelerated life testing, Data modeling, Thermal modeling, Fermium, Frequency modulation, Surveillance

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Proceedings Article | 5 May 2017 Presentation + Paper

Ricor's anniversary of 50 innovative years in cryogenic technology

Avishai Filis, Victor Segal, Nachman Pundak, Zvi Bar Haim, Menachem Danziger

Proceedings Volume 10180, 101800E (2017) https://doi.org/10.1117/12.2261923

KEYWORDS: Liquids, Medical research, Therapeutics, Patents, Magnetism, Safety, Infrared detectors, Reliability, Nitrogen, Infrared imaging

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Proceedings Article | 5 May 2017 Presentation + Paper

RICOR Cryocoolers for HOT IR detectors from development to optimization for industrialized production

Eli Levin, Amiram Katz, Zvi Bar Haim, Ilan Nachman, Sergey Riabzev, Dan Gover, Victor Segal, Avishai Filis

Proceedings Volume 10180, 1018005 (2017) https://doi.org/10.1117/12.2262334

KEYWORDS: Cryocoolers, Infrared detectors, Staring arrays, Temperature metrology, Sensors, Thermography, Electro optical modeling, Manufacturing, Infrared imaging, Reliability

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Proceedings Article | 17 May 2016 Paper

RICOR development of the next generation highly reliable rotary cryocooler

Itai Regev, Ilan Nachman, Dorit Livni, Sergey Riabzev, Avishai Filis, Victor Segal

Proceedings Volume 9821, 982109 (2016) https://doi.org/10.1117/12.2224457

KEYWORDS: Cryocoolers, Reliability, Cryogenics, Sensors, Accelerated life testing, Systems modeling, Interfaces, 3D modeling, Chemical analysis, Algorithm development

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Proceedings Article | 17 May 2016 Paper

Overview of RICOR tactical cryogenic refrigerators for space missions

Sergey Riabzev, Avishai Filis, Dorit Livni, Itai Regev, Victor Segal, Dan Gover

Proceedings Volume 9821, 98210Q (2016) https://doi.org/10.1117/12.2224443

KEYWORDS: Cryogenics, Space operations, Sensors, Aerospace engineering, Mars, Temperature metrology, Fermium, Frequency modulation, Climatology, Helium

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Proceedings Article | 17 May 2016 Paper

Development and optimization progress with RICOR cryocoolers for HOT IR detectors

Amiram Katz, Zvi Bar Haim, Sergey Riabzev, Victor Segal, Avishai Filis, Dan Gover

Proceedings Volume 9821, 98210N (2016) https://doi.org/10.1117/12.2224447

KEYWORDS: Cryocoolers, Infrared detectors, Staring arrays, Temperature metrology, Sensors, Thermography, Acoustics, Performance modeling, Systems modeling, Reliability

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Proceedings Article | 26 May 2015 Paper

Advanced Ricor cryocoolers for high-end IR missile warning systems and ruggedized platforms

Ilan Nachman, Sergey Riabzev, Avishai Filis, Dan Gover, Adam Perach, Itai Regev, Victor Segal

Proceedings Volume 9451, 945124 (2015) https://doi.org/10.1117/12.2176019

KEYWORDS: Cryocoolers, Missiles, Medium wave, Infrared imaging, Infrared radiation, Safety, Systems modeling, Staring arrays, Temperature metrology, Manufacturing

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Proceedings Article | 26 May 2015 Paper

Development and optimization progress with RICOR cryocoolers for HOT IR detectors

Amiram Katz, Zvi Bar Haim, Ilan Nachman, Sergey Riabzev, Eugene Krimnuz, Victor Segal, Avishai Filis, Dan Gover

Proceedings Volume 9451, 945120 (2015) https://doi.org/10.1117/12.2176016

KEYWORDS: Cryocoolers, Staring arrays, Sensors, Infrared detectors, Thermography, Performance modeling, Infrared sensors, Detector development, Manufacturing, Prototyping

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Proceedings Article | 24 June 2014 Paper

Overview and analysis of laboratory life tests and field data for RICOR's high reliable Cryocoolers

Racheli Moshe, Shlomi Baruch, Dorit Livni, Victor Segal, Avishai Filis

Proceedings Volume 9070, 90702S (2014) https://doi.org/10.1117/12.2050262

KEYWORDS: Cryocoolers, Data modeling, Reliability, Electro optical modeling, Failure analysis, Thermal modeling, Analytical research, Thallium, Data analysis, Statistical modeling

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Proceedings Article | 24 June 2014 Paper

RICOR's cryocoolers development and optimization for HOT IR detectors

Amiram Katz, Victor Segal, Avishai Filis, Zvi Bar Haim, Ilan Nachman, Eugene Krimnuz, Dan Gover

Proceedings Volume 9070, 90702N (2014) https://doi.org/10.1117/12.2050317

KEYWORDS: Cryocoolers, Staring arrays, Sensors, Infrared detectors, Temperature metrology, Thermography, Reliability, Infrared radiation, Standards development

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Proceedings Article | 31 May 2012 Paper

RICOR's rotary cryocoolers development and optimization for HOT IR detectors

Avishai Filis, Zvi Bar Haim, Tomer Havatzelet, Dan Gover, Moshe Barak

Proceedings Volume 8353, 83531U (2012) https://doi.org/10.1117/12.923835

KEYWORDS: Staring arrays, Sensors, Cryocoolers, Infrared detectors, Temperature metrology, Reliability, Thermodynamics, Thermography, Optimization (mathematics), Cameras

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Proceedings Article | 21 May 2011 Paper

RICOR's new development of a highly reliable integral rotary cooler: engineering and reliability aspects

Avishai Filis, Nachman Pundak, Moshe Barak, Ze'ev Porat, Mordechai Jaeger

Proceedings Volume 8012, 80122O (2011) https://doi.org/10.1117/12.884218

KEYWORDS: Reliability, Cryocoolers, Accelerated life testing, Mechanical engineering, Data modeling, Electro optical modeling, Standards development, Systems modeling, Interfaces, Clocks

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Proceedings Article | 4 May 2010 Paper

Cryocoolers for infrared missile warning systems

Avishai Filis, Nachman Pundak, Yoav Zur, Ramon Broyde, Moshe Barak

Proceedings Volume 7660, 76602L (2010) https://doi.org/10.1117/12.850006

KEYWORDS: Cryocoolers, Medium wave, Missiles, Staring arrays, Infrared imaging, Infrared radiation, Optimization (mathematics), Analog electronics, Reliability

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Proceedings Article | 7 May 2009 Paper

Microminiature rotary Stirling cryocooler for compact, lightweight, and low-power thermal imaging systems

Avishai Filis, Zvi Bar Haim, Nachman Pundak, Ramon Broyde

Proceedings Volume 7298, 729818 (2009) https://doi.org/10.1117/12.818427

KEYWORDS: Sensors, Staring arrays, Thermography, Infrared detectors, Cryocoolers, Infrared radiation, Reliability, Infrared imaging, Infrared sensors, Thermodynamics

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Novel compact and low power consuming cooled infrared thermal imagers as used in gyro-stabilized payloads of miniature unmanned aerial vehicles, Thermal small arms sights and tactical night vision goggles often rely on integral rotary micro-miniature closed cycle Stirling cryogenic engines. Development of EPI Antimonides technology and optimization of MCT technology allowed decreasing in order of magnitudes the level of dark current in infrared detectors thus enabling an increase in the optimal focal plane temperature in excess of 95K while keeping the same radiometric performances as achieved at 77K using regular technologies. Maintaining focal plane temperature in the range of 95K to 110K instead of 77K improves the efficiency of Stirling thermodynamic cycle thus enlarging cooling power and enabling the development of a mini micro cooler similar to RICOR's K562S model which is three times smaller, lighter and more compact than a standard tactical cryocooler like RICOR's K508 model. This cooler also features a new type of ball bearings and internal components which were optimized to fit tight bulk constraints and maintain the required life span, while keeping a low level of vibration and noise signature. Further, the functions of management the brushless DC motor and temperature stabilization are delivered by the newly developed high performance sensorless digital controller. By reducing Dewar Detector thermal losses and increasing the focal plane temperature, longer life time operation is expected as was proved with RICOR's K508 model. Resulting from this development, the RICOR K562S model cryogenic engine consumes 1.2 - 3.0 WDC while operating in the closed loop mode and maintaining the typical focal plane arrays at 200-100K. This makes it compatible with very compact battery packages allowing further reduction of the overall thermal imager weight thus making it comparable with the compatible uncooled infrared thermal imager relying on a microbolometer detector in terms of power consumption and bulk.

Showing 5 of 17 publications

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