particle detector

1
Particle Detector
To detect scattered ions, recoiling target
nuclei, decay particles and to allow for ?-ray
Doppler shift corrections, a position-sensitive
semiconductor ring counter will be used - a
Double-Sided Silicon Strip Detector (DSSSD) with
compact disc geometry.

• Theory
• The DSSSD is made up of a number of
  semiconducting strips, cross-laid on each side.
  An applied bias voltage depletes the full
  detector, so when a particle hits the detector,
  electron-hole pairs are created. They start to
  drift in the electric field and cause a charged
  pulse that can be detected. The particle position
  is determined in one dimension on each side of
  the strip.

• Data
• Total area 50 cm2 (93 active)16 annular p
  strips/quadrant24 sector n strips/quadrantIn
  total 160 discrete detectorsWafer thickness 35 -
  1000 ?m?E-E mounting