Gulfstream V / G500 / G550
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 15.0
Distraction; Situational Awareness
ATC Issue All Types; Conflict Airborne Conflict; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew FLC complied w / Automation / Advisory
Human Factors
Aircraft Y on VFR transition from the south to northwest climbing to 2;000 feet. Aircraft X IFR cleared for takeoff. Aircraft Y was on a more northerly track than I anticipated and flew in close proximity to Aircraft X opposite direction; each aircraft passing to the right of each other. I failed to issue traffic or preventive instructions to either aircraft due to my lack of attention to the radar scope. Aircraft Y was advised of the jet passing off his right. Pilot replied 'In sight; no factor'. Aircraft X declared RA with departure control. I can only attribute this inattention to a preoccupation with recent unrelated occurrences and current and personal life events.I have requested to be released from Local Control duties until such time as Management and I feel confident enough for me to safely resume responsibility for the position.
ATC reported a VFR transition aircraft and an IFR departure aircraft that passed close enough for one aircraft to receive an RA.