Geographic information systems (GIS) for the determination of inundation maps of Lake Mogan, Turkey

The use of geographic information systems (GIS) allows for a very efficient analysis of spatial hydrologic data for water resources projects especially for water control studies. rn this respect, flood hydrographs for Mogan basin, Turkey for different durations and return periods are determined by using Soil Conservation Service (SCS) method. The basic parameter of the SCS method, curve number (CN), is evaluated by using GIS employing digital land use and hydrologic soil group data derived from analog maps. A Digital Elevation Model (DEM) of Mogan basin is constructed by making use of topographic maps with a scale of 1:25, 000. Flood hydrographs for these three productive subbasins of lake Mogan are attached and superimposed to obtain the total flood hydrographs. Total flood hydrographs entering into Lake Mogan are routed by Puls Method to determine the outflow hydrographs fi;om the lake; then, associated lake levels are computed. Furthermore, inundation maps of Lake Mogan are obtained; these results are presented by GIS techniques

FastIC ASIC readout performance for Cherenkov based TOF-PET imaging

The emerging field of ultra-fast timing has enormous potential in high-energy physics, nuclear medicine, and imaging, and is driving advances in detector and readout electronics. To achieve improved time resolution, significant efforts have been devoted to this field, resulting in impressive coincidence time resolution (CTR) values for silicon photomultiplier (SiPM) and scintillator crystals using state-of-the-art high-frequency (HF) readout. However, scaling this readout method for system-level applications is not yet feasible, hence requiring dedicated application-specific integrated circuits (ASICs). In this study, we evaluate the performance of the FastIC, an 8-channel readout ASIC suitable for TOP-PET application, in terms of CTR. The study employs Cherenkov photons produced in bismuth germanium oxide (BGO) scintillator crystals and novel SiPMs with metal-trenching. We obtain CTR values of 257±5 ps and 152±4 ps, respectively, for 2x2x20mm³ and 2x2x3mm³ BGO crystals using HF readout as a reference, with minimal electronic interference, by exploiting the full potential of SiPMs with metal trenching. In comparison, the CTR values obtained using the FastIC for the same crystals were 490±3 ps and 330±4 ps, respectively. We also assess the limits of the FastIC and suggest areas for further improvements