Journal article
A closed-cycle miniature dilution refrigerator for a fast-cooldown 100 MK detector wafer test cryostat
- Abstract:
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The forthcoming generation of cosmic microwave background polarization observatories is developing large format detector arrays which will operate at 100 mK. Given the volume of detector wafers that will be required, fast-cooldown 100 mK test cryostats are increasingly needed. A miniature dilution refrigerator (MDR) has been developed for this purpose and is reported. The MDR is precooled by a doublestage 3He–4He Chase Research Cryogenics sorption refrigerator. The test cryostat based on this MDR will enable fast cooldown to 100 mK to support rapid feedback testing of detector wafers fabricated for the Simons Observatory. The MDR has been designed to provide a 100 mK stage to be retrocompatible with existing CRC10 sorption coolers, reducing the base temperature from 250 mK for the new generation of detectors. Other 250 mK cryostats can be retroftted in the same way. This confguration will meet the cryogenic requirements for single-wafer testing, providing 5–10 μW of cooling power at 100 mk for over 8 h. The system operates in a closed cycle, thereby avoiding external gas connections and cold o-rings. No moving parts are required, with the system operated entirely by heaters.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, 1.3MB, Terms of use)
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- Publisher copy:
- 10.1007/s10909-020-02374-w
Authors
- Publisher:
- Springer
- Journal:
- Journal of Low Temperature Physics More from this journal
- Volume:
- 199
- Issue:
- 3-4
- Pages:
- 771-779
- Publication date:
- 2020-02-24
- Acceptance date:
- 2020-01-30
- DOI:
- EISSN:
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1573-7357
- ISSN:
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0022-2291
- Language:
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English
- Keywords:
- Pubs id:
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1115264
- Local pid:
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pubs:1115264
- Deposit date:
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2020-07-01
Terms of use
- Copyright holder:
- Azzoni et al.
- Copyright date:
- 2020
- Rights statement:
- Copyright © 2020 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
- Licence:
- CC Attribution (CC BY)
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