Simulationofps-DetectorElectronicsApproachesPossibiliti.ppt

Simulation of ps-Detector ElectronicsApproaches PossibilitiesWorkshop on Very Fast Time-of-Flight Methods, Problems and ProspectsNovember 18, 2005 University of Chicago;INTRODUCTION: Tube Signal Modeling;Tube Output Signal on Collector;Ps-Detector Electronics Requirements;Discriminators Leading-edge discriminator Constant fraction discriminator Different types TDCs Wilkinson (Mixed) Time to Amplitude Converter (TAC) (Analog) “Direct” measurement (Digital) ;From Harold’s talk, we will build two Chips for Tube Readout (1) psFront-end (2) psTransport;Simulation Tools;Preliminary Simulation Work;Introduction to IHP 0.25mm BiCMOS SiGe Process;SIM-I: “Zero-Walk” Discriminator Schematics;SIM-I: “Zero-walk” Discriminator Behavioral Model Simulation;SIM-I: “Zero-walk” Discriminator  Behavioral Model Simulation Results;SIM-II: Zero-Crossing Voltage Comparator Schematics Based on IHP 0.25mm BiCMOS Process;SIM-II: Zero-Cross Comparator Preliminary Simulation Results ;SIM-II: Comparator Simulation Results;200ns;SIM-III: Bipolar Time Stretcher Schematics based on IHP 0.25mm BiCMOS Process;SIM-III: Simulation Result of  Stretched Time Interval vs. Input Time Interval;SIM-III: Charge and Discharge Switches Caused Overshoot and Undershoot on Time Stretcher Output;SIM-IV: TAC Simulation; SIM-IV: Time-to-Amplitude (TAC) Schematics Based on IHP 0.25mm BiCMOS Process ;SIM-IV: TAC Output vs. Tw = 1ns Input ;SIM-IV: TAC Simulation Results Sweep Tw from 1ns to 2ns with 100ps Increment ;SIM-IV: TAC Outputs vs. Tw Inputs Sweep Tw from 1ns to 1.01ns with 1ps Increment; Wilkinson TDC Vs. TAC-ADC Based on IHP 0.25mm BiCMOS SiGe Process;REVIEW OF IC DESIGN TOOLS;Conclusion;Forward Charge Injections without Cancellation Switch;;Forward Charge Injection