Analysis of background events in Silicon Drift Detectors

Enhanced energy range thermoelectrically cooled silicon X-ray detectors

“…Achieving a 1 mm thick SDD requires careful attention to guard ring design, to the surface properties, and to maintaining cleanliness inside the detector package. This plot is the result of simulations performed with the Silvaco Atlas semiconductor modeling software and is similar to results shown by other authors [8]. The electric potential in an SDD exhibits a "plateau" region inside the outer drift electrode.…”

“…No signal is detected for X-rays interacting outside the plateau. The location of this plateau depends on the bias voltages applied to the various electrodes [8] and will vary with the SDD thickness. Also shown in Fig.…”

Improvements in PIXE analysis of hourly particulate matter samples

“…The SDD was positioned at about 145° with respect to the beam direction, at about 6 cm distance from the target; a magnetic proton deflector was installed to prevent the damage to the detector by backscattered protons, designed to deflect protons up to 6 MeV in energy. In the newly upgraded set-up, this SDD has been replaced by a 40 mm 2 (collimated to 30 mm 2 by a Ta-Cr-Ti-Al multilayer collimator, to shield the outer part of the area, where incomplete charge collection may happen [23]), 450 µm thick SDD, having 140 eV FWHM energy resolution at the 5.9 keV Mn Kα line and 1 µs shaping time. The position of the detector has been maintained, although the distance of the new SDD from the target has been necessarily increased to about 9 cm due to the larger length of the new magnetic proton deflector.…”

Silicon drift detectors with enlarged sensitive areas

“…These extrema are located in the center of the chip beneath the read-out node and at the outer region beneath the last drift-ring. 15 The latter can be masked by a smaller collimator size, and thereby those so-called split events produced underneath the border are suppressed.…”