Ricor Cryocoolers for HOT IR Detectors – from Development to Optimization for Industrialized Production

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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

Ricor-Cryogenic & Vacuum Systems (Israel)

ABSTRACT

The modern needs of the electro-optical market for small low-power and light-weight IR systems are impelling research and development of High Operating Temperature (HOT) IR detectors, requiring development of dedicated “HOT” cryocoolers. The development of cryocoolers with emphasis on the “SWAP􀬷” configuration means small size, low weight, improved performance, low power consumption and low price, in order to optimize IDDCA for future hand held thermal sights. This paper will present the development and the progress made with the new “HOT” cryocooler, including customer data after the evaluation process, performances achieved using a common cold finger, test results update on a large series of production coolers, life and qualification test update and acoustic noise reduction. All the above mentioned information relates to the FPA temperature range of 130 – 200K for various cryocooler models based on rotary & linear design concepts.

The paper will also review the progress with the latest development activities implemented in the cryocoolers and the electronic control modules in order to improve reliability and minimize regulated power consumption.

Keywords: Cryocoolers, SWAP, HOT detector, Infrared, RICOR, Stirling, FPA

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