This title appears in the Scientific Report : 2009 

A thin gold coated hydrogen heat pipe-cryogenic target for external experiments at COSY
Abdel-Bary, M.
Abdel-Samad, S. / Elawadi, G. / et, al.
Experimentelle Hadronstruktur; IKP-1
Cryogenics, 49 (2009) S. 192 - 197
Amsterdam [u.a.] Elsevier Science 2009
192 - 197
10.1016/j.cryogenics.2009.01.003
Journal Article
Physik der Hadronen und Kerne
Cryogenics 49
Please use the identifier: http://dx.doi.org/10.1016/j.cryogenics.2009.01.003 in citations.
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. (C) 2009 Elsevier Ltd. All rights reserved.