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The multifunctional spectrometer (MFS) is a new radiation monitor that together with component technology test bed makes the European Space Agency Alphasat Environment and Effects Facility—Technology Demonstration Payload 8 (AEEF-TDP8). The two units are hosted in the X panel of the Alphasat satellite in orbit since July 2013. MFS is an instrument specifically designed to characterize the space radiation...
Background: The interaction of highly intense laser pulses with solid targets covers a wide range of phenomena over several orders of magnitude in laser intensity. Time-of-flight measurements provide an accurate reconstruction of the ion energy spectra. We report on the observation of aluminium ions from a laser-plasma interaction by a scintillator-based detector with adjustable dynamic range. Methods:...
In this work, a direct image reconstruction algorithm for PET is proposed. This method follows naturally from the concept of LOR, and easily admits depth of interaction and time of flight information. In addition, this algorithm does not require the computation of sinograms or a system matrix. Thus, it is not restricted in the formation of high pixel density images and allows the image formation in...
The use of monolithic crystals to detect the incident gamma photons for PET imaging has the flexibility to virtually define the detector pixel size. These pixels determine the Lines Of Response (LORs) needed during the reconstruction process. Although there are very few groups using monolithic crystals for PET, the most common approach is to homogeneously define the dimensions for the virtual pixels...
In this contribution, Coincidence Resolving Time (CRT) results with the developed multichannel FPGA-TDC are showed as a function of different configurations for both, the sensor bias voltage and the digitizer threshold. The dependence of the CRT with the sensor matrix temperature, the amount of SiPM active area and the crystal type are also analyzed. Preliminary measurements carried out with a crystal...
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