Vacuum chambers must fulfil ultra-high vacuum requirements while
withstanding thermo-mechanical loads. This is particularly true in high energy
particle accelerator where interactions of particles with matter may induce
thermal load, material activation, background… The choice of the material of
the vacuum chamber is crucial for the final application. Metals such as
stainless steel, copper and aluminium are usually used. Even with outstanding
mechanical and physical properties, beryllium is used for very specific
applications because of its cost and toxicity.Ceramics
such as alumina are usually used for fast magnet vacuum chambers. With the next
generation of high energy physics accelerator generation such as CLIC and TLEP,
the problematic of high cyclic thermal load induced by synchrotron radiation is
raised. This paper aims at defining some figures of merit of different
materials with respect to several load scenarios
and presents briefly their vacuum compatibility.
Cite this paper
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