 -strips detectors: caracterización y simulación Mercedes 15-Febrero-2008

Weighting Potential Situation 1: All electrodes grounded: V A = V B = 0 A mobile charge at P point: Q P = q, V P We want to find the induced charge in the A electrode, Q A Situation 2: q is removed: Q P = 0 V A = 1V  V P = V A (P) V B = 0V According to Green’s reciprocation theorem: If q moves in direction x, the current on electrode A is A B x P q X Y

 is the weighting potential that describes the coupling of a charge at any position to electrode A (E x is the weighting field). It is obtained by setting the potential of the electrode to 1 and setting all other electrodes to potential 0. The electric field and the weighting field are different: –The electric field determines the charge trajectory and velocity –The weighting field depends only on geometry and determines how charge motion couplesto to a specific electrode. To Do: Simulation of Weighting Fields in different configurations

Collected charge simulation for different fluences

Evaluation of Perugia Trap Model for irradiated detectors To note  Different setup configurations: Simulation: separeted strips Data: shorted strips Valencia Data Liverpool Data