3D Pixel Sensor Studies

Introduction

The pixel detector contributes to tracking and is cruvial to vertex reconstruction, both being important ingredients to the physics capability of ATLAS. Since it is situated very close to the beam pipe, radiatin damage is expected to render parts of the pixel detector not fully functional after a few years of data taking at full luminosity. Furthermore, the LHC luminosity will be upgraded by a factor of 10 on a comparable time scale. Hence, it is mandatory that we replace the existing pixel detector with one that is more radiation hard. Many tests are already underway. One of the more promising detectors is the 3D sensor, fist proposed by Parker, Kenney and Segal in 1997. Much has been done since that time, such as:

• Spatial and energy response measurements
• Active edge

Possible Tasks

There are a number of related tasks ranging from simulation studies to beam tests.

• Use computer simulation tools to understand the performance as a function of sensor parameters.
• Participate in beam tests at CERN if timing is consistent with your presence at CERN.
• Analyze beam test data.
• Characterize sensor performance before and after irradiation.

For additional information, contact Charlie Young.