Crossword Genius

Gallery situated in finest operational trial (4-4)

Ross

I believe the answer is:

beta-test

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'operational trial' is the definition.
'beta test' can be an answer for 'trial' (beta test is a kind of trial). I am unsure of the 'operational' bit.

'gallery situated in finest' is the wordplay.
'gallery' becomes 'tate' (Tate Modern, Tate Britain etc).
'situated in' is an insertion indicator.
'finest' becomes 'best' (similar in meaning).
'tate' inserted inside 'best' is 'BETA-TEST'.

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I've seen this clue in the Sydney Morning Herald.
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