Light Transport; Low Wing; 2 Turbojet Eng
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 13.0
Human-Machine Interface
ATC Issue All Types; Conflict Airborne Conflict
Air Traffic Control Issued New Clearance; Air Traffic Control Provided Assistance; Flight Crew FLC complied w / Automation / Advisory; Flight Crew Returned To Clearance; Flight Crew Took Evasive Action
Airport; Airspace Structure
Aircraft X was climbing off of IFP on the IFR departure to 8000 feet. While in the turn and climbing on the departure; Aircraft X turned and climbed into a VFR overflying westbound over IFP. I was not talking to the VFR aircraft and not yet in contact with Aircraft X when Aircraft X turned and climbed into the VFR aircraft. I tried giving a full route clearance away from the target; unfortunately Aircraft X did not get it in time. When I checked to see if they were in fact on frequency; they advised me that they responded to a RA. I took down information and continued to give them the correct clearance. Not sure if this could have been avoided at all since I was not in communication with the other aircraft and I don't think IFP tower could have given them traffic in time.I'm not sure how to avoid this situation since I was not in contact with the VFR target. No way to know 100% what altitude to issue when not verified.
ARTCC Controller reported an aircraft departing a controlled airport on an IFR clearance responded to an RA for a VFR aircraft. The IFR aircraft had not yet contacted the Controller and the VFR aircraft was not in communication with ARTCC.