Ponencias (Centro Nacional de Aceleradores)
URI permanente para esta colecciónhttps://hdl.handle.net/11441/10941
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Contribución de Congreso A Preamplifier for the Front-End Readout System of Particles Tracking in Secondary Electron Detectors(Institute of Electrical and Electronics Engineers (IEEE), 2012-08-20) Garzón Camacho, Alejandro; Fernández Martínez, Begoña; González Álvarez, Marcos Aurelio; Ceballos Cáceres, Joaquín Francisco; Rosa Utrera, José Manuel de la; Física Atómica, Molecular y Nuclear; Electrónica y Electromagnetismo; Ministerio de Ciencia e Innovación (MICIN). España; Junta de AndalucíaThis paper presents the design and characterization of a preamplifier used in the electronic front-end of low-pressure gaseous secondary electron detectors. The circuit - implemented in a printed circuit board as a proof of concept - has been designed to cope with the specifications of the readout electronics used in spatial resolution measurements. Experimental results show a transimpedance gain of 80dB, an overall voltage gain of 18 dB, a peak signal-to-noise ratio of 36.5 dB and a shaping time frame of 140-170ns. These features improve the performance of previous reported approaches to the problem, and allow us to minimize the overlapping probability in secondary electron detections for radioactive ion beams tracking, achieving a counting rate higher than 106 particles per second.Contribución de Congreso Time-of-Flight Detector for the Characterisation of Laser-Accelerated Protons(Institute of Electrical and Electronics Engineers (IEEE), 2014-06-12) Seimetz, M.; Bellido, P.; Soriano, A.; Huertas, C.; García López, Francisco Javier; Jiménez Ramos, María del Carmen; Fernández Martínez, Begoña; Conde, P.; Crespo, E.; Benlloch, J. M.; Física Atómica, Molecular y Nuclear; Física Aplicada II; Ministerio de Economía y Competitividad (MINECO). España; Agencia Estatal de Investigación. España; Generalitat ValencianaLasers of ultra-high intensity focused on thin targets can form plasmas and release large numbers of charged particles with kinetic energies in the MeV region. The characterization of the accelerated particles requires suitable detectors. We present a time-of-flight detector based on a plastic scintillator optimized for the spectral analysis of laser-accelerated protons.Contribución de Congreso Dosimetric Calibration of Radiochromic Film For Laser-accelerated Proton Beams(Institute of Electrical and Electronics Engineers (IEEE), 2014-06-12) Bellido, P.; Seimetz, M.; Soriano, A.; Huertas, C.; García López, Francisco Javier; Jiménez Ramos, María del Carmen; Fernández Martínez, Begoña; Conde, P.; Crespo, E.; Benlloch, J. M.; Física Atómica, Molecular y Nuclear; Física Aplicada II; Agencia Estatal de Investigación. España; Generalitat ValencianaWhen an ultra-intense and ultra-short laser pulse interacts with solid matter a fraction of the laser pulse can be converted into kinetic energy of a beam of charged particles. Radiochromic film (RCF), widely used as radiation detector in the field of conventional radiotherapy, can be used as detector for laser-accelerated protons. If used in stack configuration it is a useful and versatile tool to obtain 2D spatial distribution and energetic information of proton beams.