کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7915738 | 1511024 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
ATHENA X-IFU 300â¯K-50â¯mK cryochain demonstrator cryostat
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
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چکیده انگلیسی
A dedicated activity within this CTP-DCS is the demonstration of the 300â¯K-50â¯mK cooling chain in a Ground System Equipment (GSE) cryostat. The studies are focused on the operation of the space coolers, which is made possible by the use of a ground cooler for cooling cryogenic shields and mechanical supports. Thanks to the modularity of the cryostat, several cooling chains could be tested. In the base line configuration described here, the low temperature stage is the CEA hybrid sorption/ADR 50â¯mK cooler with thermal interfaces at 4â¯K and 2â¯K. 4â¯K cooling is accomplished by a 4â¯K Joule-Thomson (JT) cryocooler and its Stirling precooler provided by JAXA. Regarding the 2â¯K stage, at first a 2â¯Kâ¯JT from JAXA will be used. Alternatively, a 2â¯Kâ¯JT cooler from RAL could replace the JAXA 2â¯Kâ¯JT. In both cases new prototype(s) of a 2â¯Kâ¯JT will be implemented, precooled by the EM 15â¯K pule tube cooler from Air Liquide. This test program is also the opportunity to validate the operation of the cryochain with respect to various requirements, such as time constant and temperature stabilities. This would bring us valuable inputs to integrate the cryochain in DCS cryostat or for the X-IFU phase A studies. This cryochain demonstration is also a critical milestone for the SPICA mission [3]. The design of the cryostat and first thermal validations both before and after integration of the JAXA JT coolers are presented in this paper.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cryogenics - Volume 89, January 2018, Pages 85-94
Journal: Cryogenics - Volume 89, January 2018, Pages 85-94
نویسندگان
T. Prouvé, J.M. Duval, I. Charles, N.Y. Yamasaki, K. Mitsuda, T. Nakagawa, K. Shinozaki, C. Tokoku, R Yamamoto, Y. Minami, M. Le Du, J. Andre, C. Daniel, M. Linder,