Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 14
Distraction; Situational Awareness; Workload
ATC Issue All Types; Conflict Airborne Conflict; Deviation - Speed All Types; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Airspace Structure; Procedure; Chart Or Publication; Human Factors
I was being relieved from the CIC position and opened the X Sector which was combined with the Y and Z Sectors due to volume.  At the time of the incident; Henderson Tower requested a release on Aircraft Y on the SCAMR SID with the RASLR transition.  They advised they could provide visual separation with the inbound IFR which I approved.  At the same time I had a flight overflying HND enroute to VGT and another inbound to HND. Upon departure; I pointed out Aircraft Y to the Y Sector observing Aircraft X on the NIITZ Departure so I could maneuver around inbound and overflight traffic.  I observed Aircraft Y above my existing traffic and what appeared to be safely behind Aircraft X as they were approximately 8 miles and 50 KIAS slower than Aircraft X.  I shipped Aircraft Y to ZLA just prior to them reaching 12;000 MSL.  From replays I observed; the loss appeared to have occurred approximately 15-20 miles down line.We are now approximately 30 days into new Metroplex airspace and this procedure is designed to 'blend in' LAS SIDS.  This particular one causes aircraft to unnecessarily fly into each other.  ZLA also has control of these aircraft by LOA at 15;000 MSL.  A simple turn to the RASLR Fix could have avoided this.  I also mentioned the inefficiencies of the new design to our Metroplex team prior to implementation. .
L30 TRACON Controller reported a loss of separation and cited SID design as a contributing factor.