Calibration and Performance Tests of Detectors for Laser-Accelerated Protons

We present the calibration and performance tests carried out with two detectors for intense proton pulses accelerated by lasers. Most of the procedures were realized with proton beams of 0.46-5.60 MeV from a tandem accelerator. One approach made use of radiochromic films, for which we calibrated the...

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Detalles Bibliográficos
Autores: Seimetz, Michael, González Martínez, Antonio Javier, Moliner Martínez, Laura, Rodríguez-Álvarez, M.J.|||0000-0001-8333-8792, Sanchez, S., Vidal San Sebastian, Luis Fernando|||0000-0001-8852-8560, Benlloch Baviera, Jose María|||0000-0001-6073-1436, Bellido, P., Soriano Asensi, Antonio, García López, J., Jiménez-Ramos, M.C., Fernández, B., Conde Castellanos, Pablo Eloy, Crespo Navarro, Efren, Hernández Hernández, Liczandro, Iborra Carreres, Amadeo, Rigla Pérez, Juan Pablo, Sanchez, F.
Tipo de recurso: artículo
Fecha de publicación:2015
País:España
Institución:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:riunet.upv.es:10251/65646
Acceso en línea:https://riunet.upv.es/handle/10251/65646
Access Level:acceso abierto
Palabra clave:Organic scintillators
Particle beam measurements
Proton detectors
MATEMATICA APLICADA
Descripción
Sumario:We present the calibration and performance tests carried out with two detectors for intense proton pulses accelerated by lasers. Most of the procedures were realized with proton beams of 0.46-5.60 MeV from a tandem accelerator. One approach made use of radiochromic films, for which we calibrated the relation between optical density and energy deposition over more than three orders of magnitude. The validity of these results and of our analysis algorithms has been confirmed by controlled irradiation of film stacks and reconstruction of the total beam charge for strongly non-uniform beam profiles. For the spectral analysis of protons from repeated laser shots, we have designed an online monitor based on a plastic scintillator. The resulting signal from a photomultiplier directly measured on a fast oscilloscope is especially useful for time-of-flight applications. Variable optical filters allow for suppression of saturation and an extension of the dynamic range. With pulsed proton beams we have tested the detector response to a wide range of beam intensities from single particles 3 x 10(5) to protons per 100 ns time interval.

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