TPC Basics

10/19/99


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Table of Contents

TPC Basics

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Introduction

Introduction

Simple and Cheap

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The Gas Volume Sets the Limits

Design Philosophy

Back to Electron Diffusion in Gas

Electron Diffusion in Gas

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Field Cage

Calculating drift distortion

Distortion error from 2 shorted stripes

Field Cage Requirements

The Readout, Outer and Inner sector

Outer Sector Corner

Sector Wire Geometry

MWPC Pad Readout

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Pad current measured with fast amp

Measuring Gas Gain

Additional Measurements

Front-End Electronics on Pads

Shaper Amplifier Demonstration

TPC Laser System

Internal Beams

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Gating Grid

Sector Testing with Cosmic Rays 10/19/98-10/30/98

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dE/dx vs rigidity

99 Engineering Test Results

Performance, first results

Performance, first results

Author: Howard Wieman

Email: HHWieman@lbl.gov

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