کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1508262 | 993961 | 2009 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A thin gold coated hydrogen heat pipe-cryogenic target for external experiments at COSY A thin gold coated hydrogen heat pipe-cryogenic target for external experiments at COSY](/preview/png/1508262.png)
A gravity assisted Gold coated heat pipe (GCHP) with 5-mm diameter has been developed and tested to cool a liquid hydrogen target for external beam experiments at COSY. The need for a narrow target diameter leads us to study the effect of reducing the heat pipe diameter to 5 mm instead of 7 mm, to study the effect of coating the external surface of the heat pipe by a shiny gold layer (to decrease the radiation heat load), and to study the effect of using the heat pipe without using 20 layers of‘ super-insulation around it (aluminized Mylar foil) to keep the target diameter as small as possible. The developed gold coated heat pipe was tested with 20 layers of super-insulation (WI) and without super-insulation (WOI). The operating characteristics for both conditions were compared to show the advantages and disadvantages.
Journal: Cryogenics - Volume 49, Issue 5, May 2009, Pages 192–197