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Fast Avalanche Photodiode Detectors for the Superconducting Super Collider

  • Stefan Vasile (a1), Jeffrey S. Gordon (a1), Richard Farrell (a1) and Michael R. Squillante (a1)


The tracking of high energy, secondary products in the Superconducting Super Collider (SSC) presents challenging sensitivity and timing requirements for the scintillating fiber converters and the optical radiation detectors planned for use as signal readouts. Silicon Avalanche Photodiodes (APD) are very promising detectors which may ultimately meet these requirements.

We have designed and manufactured 1 mm2 APDs, to be operated in Geiger mode as single photon detectors for the SSC. The progress on decreasing the APD response time by platinum doping, device thinning and external avalanche quenching is reported.



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