Performance enhancements of compound semiconductor radiation detectors using digital pulse processing techniques

High Resolution X-Ray Spectroscopy with Compound Semiconductor Detectors and Digital Pulse Processing Systems

“…We first describe the main characteristics of the detector and the DPP system and then we present the results of the characterization of the overall detection system at both low (200 cps) and high photon counting rates (up to 800 kcps) by using monoenergetic X-ray sources ( 109 Cd, 152 Eu, 241 Am, 57 Co) and a nonclinical Xray tube with different anode materials (Ag, Mo). This work was carried out in the sequence of previously developed DPP systems (Abbene et al, 2007(Abbene et al, , 2010a(Abbene et al, , 2010b(Abbene et al, , 2011Gerardi et al, 2007) with the goal of developing a digital spectrometer based on DPP techniques and characterized by high performance both at low and high photon counting rate environments.…”

Silicon Photomultipliers for High-Performance Scintillation Crystal Readout Applications

“…At higher counting rates, the direct digitization of the preamplifier output pulses (DPP approach) is a very appealing solution, as reported in several works [7][8][9][10][11][12][13][14][15][16][17]. These systems showed good spectroscopic performance up to photoncounting rates of approximately 100 kcps, a limit due to the finite width of the shaped pulses and the difficulties on baseline restoration.…”

“…Some DPP systems are composed of a digitizer and a personal computer for data recording and analysis (offline analysis) [3][4][5][6]10,[12][13][14][15][16]. In a DPP system, the direct digitizing of the detector signals minimizes the drift and instability that are normally associated with analog pulse processing.…”

“…The DPP firmware is based on a revised version of a DPP method, developed by our group and successfully used for both offline [10,[12][13][14][15] and online analysis [17,18]. The pulse detection is performed by using a fast-shaping mode, whereas the PSHA starts with a slow-shaping mode.…”

“…As is well known [1,[12][13][14][15], the correlation between the height and the peaking time of the pulses can be generally used to minimize both incomplete charge collection ( Figure 6.8a) and peak pileup effects (Figure 6.8b). To compensate for incomplete charge collection, pulse shape discrimination (PSD) and pulse shape correction (PSC) techniques [14,17] were implemented.…”