The performance of ATLAS forward region full-sized n(+)n prototype silicon
micro-strip detectors has been studied after irradiation with 2 x 10(14) pr
otons/cm(2) and 52 days annealing at 20 degrees C. The signal-to-noise rati
o measured at - 10 degrees C with LHC speed read-out was found to be degrad
ed primarily due to increased noise. The reduction in the reverse current a
nd the changes in the voltage needed for maximum charge collection have bot
h been studied as a function of annealing time. Above the depletion voltage
, no effect on the charge collection efficiency has been observed during th
is annealing period. (C) 1999 Elsevier Science B.V. All rights reserved.