The temperature, thermal gradients and stress fields in the beam dump of the SARAF phase II Beam Dump (go to google) should withdraw power of 200 kW created by 40 MeV protons /deuterons with current of 5 mA. The idea is to constract a liqued metal target to avoid radiation demege and good heat tranfer to keep the target at low temperature. The liquid suggested is gallinstan.
Concerning to heat exchanger materials able to resist corrosion by Galinstan up to around 450 ºC, you could consider: austenitic nickel-chromium-based alloy Inconel® 625, molybdenum, or titanium. For somewhat lower temperatures, say, up to about 400 ºC, you could also consider the ferritic stainless steel (SS) AISI type 430 or the austenitic SS AISI 347 (or the nearly equivalent ACI CF-8C). For even lower temperatures, say, up to around 250 ºC, the austenitic SS 316 AISI could also be selected. For the highest temperatures, either tantalum, up to approximately 600 ºC, or tungsten, roughly up to 850 ºC; could be considered.
Dear Carlos Araújo Queiroz ,
thank you for the insight. Do you have any additional data on your given information (Microscopy experiments on corrosion)? The difference between 450° and 400° would be very important for our experiments.
Best regards,
Anton
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