Author/Authors :
Beringer، نويسنده , , J. and Borer، نويسنده , , K. and Brooks، نويسنده , , C.B. and Fox-Murphy، نويسنده , , A. and Nickerson، نويسنده , , R.B. and Weidberg، نويسنده , , A.R.، نويسنده ,
Abstract :
The results of an accelerated life time test of neutron irradiated ABB Hafo radiation hard LEDs are presented. After a 1 MeV neutron irradiation with up to 1.4 × 1014n/cm2 at the Rutherford Appleton Lab (RAL) ISIS facility, the LEDs have been operated without seeing any degradation due to ageing for a time which is estimated to correspond to about 57 years of operation in the ATLAS SemiConductor Tracker (SCT) at the Large Hadron Collider (LHC). The irradiation decreased the light output of the LEDs substantially, but during the operation of the LEDs a fast annealing of most of the irradiation damage was observed.
