A novel approach to radiation detector readout system for space borne instrumentation

Abstract

This thesis focuses on the new signal readout technique from the radiation detector newlinewhich can be used for future space missions ensuring to have better in terms of newlineresolution, mass, and power compared to available signal readout techniques. In newlineradiation detector signal processing usually, the charge-sensitive pre-amplifier converts newlinethe small charge signal coming from the semiconductor-based detector into voltage newlineform and then the signal is further amplified to measure the energy of the incoming newlineradiation. The voltage pulse from a charge-sensitive pre-amplifier (CSPA) is amplified newlinewith the use of a shaping amplifier which reduces the signal bandwidth. To have better newlineenergy resolution, precise measurement of the peak amplitude of shaping amplifier newlineoutput is required. For multiple detector systems, currently available peak height newlineanalysis (PHA) methods are quite power consuming and difficult to implement in Field newlineProgrammable Gate Arrays (FPGA). In this direction, the research is carried out and a newlinetechnique is developed that uses low sampling analog to digital converter and newlineinterpolation technique to precisely measure the peak of the analog pulse. The main newlinetopic of interest are, the development of a novel signal readout technique using the newlineinterpolation method, the selection of appropriate interpolation technique and newlineperformance comparison with existing readout techniques. The silicon drift detector newline(SDD) based soft X-ray spectrometer instrument is developed and used to compare the newlinePHA techniques. Chapter 1 gives a brief objective of the research goal, and chapter 2 newlineincludes the literature review and background of various radiation detectors and their newlinereadout techniques. Chapter 3 discuss the design details of various pulse height analysis newlinemethods. The methods are implemented on hardware and various parameters are newlineobtained to compare with the proposed method. Chapter 4 discusses the implementation newlineof a new method with the use of the interpolation technique and contains results for the newlineproposed method and a compariso