Signal Induced by a Moving Charge Example Cylindrical Proportional Chamber Charged Avalanche particle eglo primary (amplification) ionization cathode inode Electron cloude lectron -ion E≠0 =io/(1tt0) Luciano musaBeijing, January 2008 Luciano Musa 7 anode cathode Avalanche region (amplification) Charged particle electron – ion pair E ≠ 0 primary ionization Ion cloude Electron cloude gas Signal Induced by a Moving Charge Cylindrical Proportional Chamber i(t) = i0 / (1+t/t0) Example II