Speaker
Mr
Tony Price
(University of Birmingham, SPiDeR)
Description
Future high energy detectors will require unprecedented energy and position resolutions. Two CMOS Monolithic Active Pixel Sensors (MAPS), TPAC and FORTIS, have been designed to study the issues involved in achieving these.
One application is to use MAPS as the active layer of a sampling electromagnetic calorimeter, allowing high granularity calorimeter systems which can utilise particle flow techniques. The TPAC sensors were developed to study this application. They were the first to use a new "INMAPS" technology and have demonstrated a significantly improved MIP efficiency compared to standard MAPS pixels. The sensors have been tested at CERN and DESY for their response to positrons, pions and electromagnetic showers. TPAC sensors have also been irradiated to investigate their radiation hardness for use in vertexing. Results on these tests will be presented.
The FORTIS sensor has been developed to explore the possiblity of four-transistor pixel structures for low-noise performance. These could be used for both tracking and calorimetry applications. During beam tests at CERN and DESY a signal/noise ratio greater than 100 has been achieved.
Author
Mr
Tony Price
(University of Birmingham, SPiDeR)
