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Pulse Shape Discrimination

Pulse Shape Discrimination. TK Hemmick. Ar-CO 2 Drift Velocity. Typical drift gap: 3 00 Volts 2 mm 1.5 kV/cm Drift Velocity 5 cm/ m sec 40 nsec duration Enlarge drift gap! 1 cm gap 200 nsec pulse duration. Background vs Signals. Photons and Neutrons Impulse response.

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Pulse Shape Discrimination

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  1. Pulse Shape Discrimination TK Hemmick

  2. Ar-CO2 Drift Velocity • Typical drift gap: • 300 Volts • 2 mm • 1.5 kV/cm • Drift Velocity • 5 cm/msec • 40 nsec duration • Enlarge drift gap! • 1 cm gap • 200 nsec pulse duration

  3. Background vs Signals • Photons and Neutrons • Impulse response. • Electrons and Pions (MIPs) • Ionization Trail 1 cm drift 350 450 500 400

  4. “Time Expansion Chamber” At 2 cm drift (6 planes) this is called “Time Expansion Chamber” It is used in PHENIX and ALICE. Provides e/pi separation at low momentum. Information is already there in SoLID!

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