.5/1 NL, flop trip jacks, get me max value!

[TheSalche]

Just sit down at InterPoker .5/1 NL, Villain and I have about $70 in chips.

Hero dealt J [img]/images/graemlins/club.gif[/img] 6 [img]/images/graemlins/heart.gif[/img] in MP, folded to BB who checks

action from there ...

----- FLOP ----- [Jh Kd Jd]
villain: bets $2
hero: calls $2
----- TURN ----- [Jh Kd Jd][3s]
villain: bets $5
hero: ???

Should I raise at the turn or at the flop? Obviously I'm not folding this unless a diamond comes up. Is calling here to passive since he isn't likely to fire three barrels at an unraised pot?