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A CdTe detector equipped with Timepix can work in both counting mode and time over threshold (TOT) mode. When it works in TOT mode, the count recorded in each pixel represents the amount of collected charge. TOT mode provides an easy and direct way to measure the spectra of sources. A pixelated detector in TOT mode also makes it possible to observe and analyze charge sharing between pixels. The energy...
A high precision and high resolution time-to-digital converter (TDC) implemented in a 40 nm fabrication process Virtex-6 FPGA is presented in this paper. The multi-chain measurements averaging architecture is used to overcome the resolution limitation determined by intrinsic cell delay of the plain single tapped-delay chain. The resolution and precision are both improved with this architecture. In...
We present the implementation of a high-resolution Time-to-Digital Converter (TDC) in a Field Programmable Gate Array (FPGA) from Xilinx Virtex-5 family. The design of the TDC is based on a counter and interpolator method. Dedicated carry-in lines in CARRY4 blocks of the Virtex-5 FPGA are utilized for time interpolation, which realizes the fine time measurement within a system clock period. Simulation...
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