I assume west has to double. So
S W N E
3♣ x p ?
Is their any alternative to 3♠? Would you be afraid of pd passing and missing game? Of course west would then bid 3NT with the hand shown.
Would 4♣ be an OK bid, intending to bid 4♠ after pd bids 4♥?
So
S W N E
3♣ x p 4♣
p 4♥ p 4♠
p ?
Does this convey the message to west that partner has diamonds and spades?
Is east making a slam try at MP? At imps? Should west now bid 6♦ with any scoring? Would you expect to make 6♦ after seeing dummy?
In practice 6♦ makes, provided you make the reasonable play of the ace♦ from hand first and seeing South drop the J♦ you play North for the remaing ♦Q8. You will also make 12 tricks in no trumps for a good score in MP.
Another hand:
Scoring: MP
RHO opens 3♦
RHO opens 3♦
Is there any alternative to bidding 3♠? What message would a bid of 4♦ convey?
Your views would be much appreciated.

Help

South opens 3♣