SILICON SENSORS FOR THE COMPACT MUON SOLENOID EXPERIMENT AT THE LARGE HADRON COLLIDER, CERN

摘要

Demanding technology and the capability for large scale production of silicon sensors with good uniformity, low leakage currents and high breakdown voltage has been demonstrated and developed by BARC, for the first time in our country. The sensors produced have very good uniformity in terms of parameters such as full depletion voltage, breakdown voltage and leakage current of strips. The individual strip leakage is of the order of few nA/cm~2 and the strip and total leakage currents are quite well below the specified limits. Irradiation tests carried out have shown that the sensors meet the stringent specifications for reliable operation in the high radiation environment of LHC. Subsequent to the development of technology, the production of a thousand sensors has been recently completed. The sensors assembled in the form of modules are being installed in the CMS preshower at LHC, CERN. The R&D carried out over the past few years has given us the technological capability for large scale production of large area sensors. Though the R&D was targeted for the development of sensors for the international experiment at CERN, this R&D triggered the indigenous development of a wide variety of high performance sensors, for nuclear instrumentation and radiation monitoring instrumentation applications at BARC.