PTA can reassemble after short doze (6)

I believe the answer is:

catnap

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'short doze' is the definition.
'catnap' can be an answer for 'doze' (I have seen 'Brief doze' mean 'catnap' so perhaps 'doze' could also mean 'catnap'). I'm not sure about the 'short' bit.

'pta can reassemble' is the wordplay.
'reassemble' indicates anagramming the letters (I've seen 'reassembling' mean this).
'pta'+'can'='ptacan'
'ptacan' with letters rearranged gives 'CATNAP'.

'after' acts as a link.

Can you help me to learn more?

(Other definitions for catnap that I've seen before include "Forty winks (for moggy?)" , "go out briefly" , "Brief time out" , "Brief doze" , "little snooze" .)

I've seen this clue in The Irish Times.

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