کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1507303 | 1511042 | 2015 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
SPICA/BLISS cryo-chain demonstrator
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
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چکیده انگلیسی
The Background Limited Infrared Submillimeter Spectrometer (BLISS) is an instrument proposed for SPICA, the Japanese-European space-borne telescope mission under study for a possible launch in the next decade. The BLISS concept is a suite of aluminum spectrometer modules totaling â¼10Â kg cooled to 50Â mK. Cooling this ambitious instrument with high-duty cycle within the stringent heat-rejection allocations envisioned for SPICA is a challenge. We have developed a solution consisting of two stages: (1) a continuous 300Â mK intercept stage provided by two 3He sorption coolers operated sequentially, and (2) a 50Â mK adiabatic demagnetization refrigerator (ADR) operated in single-shot mode. We have built a prototype cooler and demonstrated it in a dedicated SPICA-like thermal testbed with regulated stages enabling measurement of rejected heat at 1.7Â K and 4.5Â K. The approach offers lower mass than a dual-stage ADR, and lower rejected power to 1.7Â K and 4.5Â K than a comparable single-shot 300Â mK system, while insuring a high duty cycle. As a demonstration of feasibility for SPICA and future cryogenic missions, we show long-term cooling with flight-like parasitics at 50Â mK and 300Â mK requiring only 3Â mW and 8Â mW rejected at 1.7Â K and 4.5Â K, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cryogenics - Volume 70, September 2015, Pages 70-75
Journal: Cryogenics - Volume 70, September 2015, Pages 70-75
نویسندگان
T. Prouvé, L. Duband, J. Hodis, J.J. Bock, C. Matt Bradford, W. Holmes,