HVT CLB THROUGH OCCUPIED ALT HAD LTSS FROM G4. SYS ERROR.

Narrative

I WAS WORKING RADAR POS R86 AND R65 AT NEW YORK ARTCC. AT APPROX XX30Z I WAS WORKING AN HVT FLT EBOUND FROM JFK; THE FLT WAS CLBING TO FL550 B600. I WAS ALSO WORKING A GULSTREAM; G4; FLYING FROM ACK LACKS FLANN A523 TO DEST. WHEN THE ACFT WERE APPROX 100 MI APART I OBSERVED THAT BOTH ACFT WERE AT FL430. I BELIEVED THAT THE ACFT WOULD CROSS IN THE VICINITY OF LACKS INTXN AND THAT I WOULD HAVE SUFFICIENT ALT SEPARATION. I WAS INVOLVED WITH SEVERAL COMPLEX SITS WITH OTHER ACFT. WHEN I AGAIN LOOKED AT THIS SIT I HAD APPROX 60 MI BTWN THE ACFT WITH THE HVT CLBING OUT OF FL440. I ASKED IF THE HVT WOULD BE OUT OF FL450 WITHIN THE NEXT 40 MI. HE SAID 'YES.' AGAIN; I WAS DISTRACTED WITH ANOTHER SIT WHEN I AGAIN LOOKED AT THE CONCORD THE FLT WAS AT FL443 AND APPROX 25 MI FROM THE G4. I AGAIN ASKED THE FLT IF HE WOULD BE OUT OF FL450. AT THIS TIME HE STATED THAT HE HAD ENCOUNTERED A TEMP INVERSION AND WAS NOT ABLE TO CLB. THE HVT PLT WENT INTO SOME DETAIL ABOUT THE TEMP INVERSION AND I WAS UNABLE TO BROADCAST ON THE FREQ TO DSND THE G4. I HAD A HALO ON THE G4 AND IT WAS OBVIOUS NOW THAT THE TARGETS WERE GOING TO MERGE. WHEN THE HVT FINISHED I IMMEDIATELY DSNDED THE G4 AND CALLED TFC TO THE FLT. AS THE HVT ENTERED THE HALO HE WAS SHOWING FL443 I ASKED THE G4 TO CONFIRM OUT OF FL420 AND HE CONCURRED. THE PLT OF THE G4 THEN STATED THAT HE HAD JUST FLOWN THROUGH THE SONIC BOOM OF THE HVT AND THAT IT HAD BEEN A VERY UNPLEASANT SIT TO BE IN. WITH THE SPDS INVOLVED AND THE RATES OF CLB THE RADAR SNITCH DID NOT ACTIVATE. HOWEVER; I BELIEVE THAT THE ACFT PASSED WITHIN 1400 FT OF EACH OTHER. THE HVT WAS ACCELERATING TO MACH 2 AT THE TIME. THIS WAS THE FIRST TIME THAT I EVER ENCOUNTERED A SIT WHERE THE HVT WAS UNABLE TO CONTINUE HIS CLB. NORMALLY THE HVT IS OUT OF FL470 AT THE POINT WHERE THESE ACFT PASSED. ALTHOUGH I IDENTED THE SIT EARLY I DID NOT TAKE POSITIVE CTL OF THE SIT TO ENSURE SEPARATION OF THE ACFT. I HAD SEVERAL OPTIONS AVAILABLE FROM STOPPING THE G4 AT A LOWER ALT INITIALLY OR VECTORING THE ACFT TO PLACE THE HVT BEHIND THE G4. ALTHOUGH MY EXPERIENCE HAD BEEN THAT THE HVT WOULD BE CLR OF THE ALT IN SUFFICIENT TIME; THIS WAS NOT THE CASE AND I LEARNED A VALUABLE LESSON.