CPR X UNAUTH AIRSPACE PENETRATION WHILE HOLDING HAD LTSS FROM ACR Y. SYS ERROR.

Narrative

I WAS CALLED BACK TO WORK THE HDOF (TRACKER) POS AT SECTOR 19. THE RADAR CTLR WAS JUST IN THE PROCESS OF CLRING 3 ACFT INTO THE HOLD BECAUSE TFC EBOUND WAS SHUT OFF. OTHER TFC ALSO NEEDED IMMEDIATE ATTN NOW BECAUSE OF THESE HOLDS AND INBOUNDS FOR MSP HAD TO BE SPACED AND SEPARATED FROM TURNING ACFT. I NOTICED THE LIMITED DATA BLOCK OF ACR Y AT AROUND THE DAYLE INTXN SBOUND AS CPR X WAS TO GO INTO THE HOLD NEAR BUNKR. I POINTED OUT ACR Y TO THE RADAR CTLR AT SECTOR 19 AND POINTED OUT CPR X TO THE RADAR CTLR AT SECTOR 11. IT WAS AGREED THAT ACR Y WOULD BE CLRED EBOUND AND THEN ON COURSE TO SSM AND THAT CPR X SWBOUND AND THEN INTO THE HOLD AT THE RWF VORTAC. OTHER COORD AND CTL ACTIONS HAD TO BE TAKEN AT SECTOR 19 RIGHT AWAY INCLUDING FOLLOWING THE EVER-CHANGING INSTRUCTIONS FROM TMU THAT WERE TO BE FOLLOWED. WHEN I NEXT CHKED ON THE PROGRESS OF THE SIT BTWN THE 2 INVOLVED ACFT -- A SIT EVERYONE THOUGHT HAD BEEN RESOLVED -- THEY WERE CONVERGING ALMOST HEAD-ON WITH CPR X IN A SLOW L; SWBOUND TURN AND ACR Y IN A SLOW L; NEBOUND TURN. I IMMEDIATELY POINTED AT THE 2 TARGETS ON THE SCOPE TO ALERT THE RADAR CTLR WHO ISSUED AN IMMEDIATE L TURN TO CPR X. THE ACFT ROGERED; SAYING HE HAD THE TFC IN SIGHT. THE ACFT PASSED WITH WHAT LOOKED LIKE 3 NM SEPARATION. (CONFLICT ALERT ACTIVATED AFTER THEY PASSED.) SUPPLEMENTAL INFO FROM ACN 250414: THE #1 REASON IN MY OPINION FOR THE ACTUAL ERROR IS THE POOR TURN RATE THAT CPR X EXECUTED WHEN ISSUED HIS CLRNC. AS PLOTTED ON THE NTAP IT WOULD WORK OUT TO ABOUT 1/2 OF 1 DEG PER SECOND. EVEN A 1 DEG TURN STARTED AT THE SAME TIME THAT CPR X STARTED HIS TURN WOULD HAVE PLACED CPR X WELL CLR OF AND TO THE L OF ACR Y'S PROJECTED TRACK. OF COURSE A 1 1/2 DEG TURN WOULD HAVE BEEN EVEN BETTER. I AM FULLY AWARE THAT AT FL410 STANDARD RATE TURNS ARE SELDOM WITNESSED BUT IN THIS CASE AT THIS ALT; HOWEVER; IT WOULD HAVE PROVED VERY USEFUL.