You probably should looking for an alternator splash shield rather than a power steering pump drip trap. Some ideas here
https://www.clublexus.com/forums/ls-...-bottle-2.html and you could modify a Lamborghini heat sheild one from ebay e.g.
https://www.ebay.com.au/itm/Lamborgh...MAAOSwcbtdGsWe or
https://www.ebay.com.au/itm/Lamborgh...wAAOSwBLlU79bN
Note that most of the power steering fluid that destroys alternators is drawn into the alternator by the alternator pulley fan and the serpentine drive belt is going to stop you putting a shield between that and the power steering pump. Similarly when any power steering pump drip tray fills it will still probably find it's way into the alternator.
The best solution is probably to put some large 2cm thick 5cm wide cupped high density slit foam washers on the the power steering lines between the pump and the alternator to act as a absorbent barrier to leaks that usually follow the lines down. I've seen this as OEM on some cars but can't find an example on the net at the moment. But really just check the power steering reservoir level weekly and check for any other evidence of a leeks at the same time to they can be fixed before the alternator is damaged.