Radiation effects

• Radiation background: 30 kRad

• failure of NASA PowerPC at 25 kRad gammas: no regular electronics in crate

• radiation hard XILINX XQR FPGA’s:

  • survive 60 kRad
  • latch-up immune
  • small soft upset rate; x section:
  • but size smaller: 130 kGates at the moment

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