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The second approach to be presented is the use of unique Actively Controlled JT cooler (ACC) which is capable to work at different IR detector cryostating temperatures above 100K. In addition, challenges which are associated with such approach are presented. Le-tehnika has quite some experience using the ACC at 100K level while levels above 100K still bring significant research challenges regarding the temperature stability on the detector. The paper will describe how we approached these challenges, and cooling results achieved at different temperature levels will be presented. Finally, achieved technology level will be evaluated and some possible improvements will be proposed. |
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