word choice - Is "setup" an acceptable noun in formal writing?

I'm editing a draft of a scientific paper which repeatedly uses the word "setup" to refer to the, well, experimental setup.

Example:

The dimensions of the setup are 250 mm × 250 mm × 50 mm.

Every time I see the word "setup" appear by itself, I cringe a little, thinking of, say, Microsoft Windows' SETUP.EXE. However, the phrase "experimental setup" sounds OK.

Is "setup" accepted as a valid word to use for an experimental apparatus, in formal scientific writing in American English?