Performance of a digital CdTe X-ray spectrometer in low and high counting rate environment

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.…”

Evaluation of the X-Ray Absorption by Gold Nanoparticles Solutions

“…In this work we report the spectral changes on X-ray beams transmitted through a gold nanoparticle aqueous solution registered with a Xray spectrometer. We chose this detector due to its good performance in the diagnostic energy range [10][11][12]. Results presented here account for the effect of gold nanoparticles at a low concentration on the X-ray attenuation compared to distilled water for broad beam spectra.…”