| Spectroscopic detection systems are widely used in nuclear spectrometry for several applications such as isotope identification, environmental radiation measurements, x-ray fluorescence experiments. To meet the needs in x-ray or gamma ray spectrometry applications, a number of novel concepts of both the front end and back end electronics have emerged during the two decades. They offer lower noise, better energy resolution and efficiency. To support the IAEA member state laboratories, we have developed a detection system using a Digital Trapezoidal Shaping (DTS) for Nuclear Spectroscopy Systems with a High Input Counting Rate feature. The DTS filter, in general, outputs a signal with a trapezoidal shape and is implemented by breaking DTS filter into a cascade of filters and by using corresponding recursive relations as proposed in the references [1] and [2]. We have designed and implemented a high throughput system based on a new DTS recursive relations and the IS algorithm. In it, we have derived a new cascade of filters and corresponding set of the recursive relations and shown how to implement them in a FPGA by using optimal arithmetic precision. Since the first stage in the proposed cascade is an impulse deconvoluter, (it is possible to reject impulses which could cause pile-up at the output of the cascade) we have found that is feasible to remove impulses which would cause pile up at the output of the cascade. The impulses removed from one cascade can be processed by adding a new cascade operating in parallel, hence virtually eliminating pile-up. the proposed impulse separation algorithm was implemented and successfully tested on Xilinx Zynq®-7000 All Programmable System-on-Chip. We will describe this new DTS filter which does not show any instability or significant numerical errors. The test results performed with both high flux of both x-rays and gamma-rays will be presented.
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