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Listar por autor "Seimetz, Michael"

Mostrando ítems 1-20 de 28

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A multi-shot target wheel assembly for high-repetition-rate, laser-driven proton acceleration

Peñas, J.; Bembibre, Adrian; Cortina-Gil, D.; Martín, L.; Reija, A.; Ruiz, C.; Seimetz, Michael; Alejo, Aaron; Benlliure, Jose (Cambridge University Press, 2024-03-12)

[EN] A multi-shot target assembly and automatic alignment procedure for laser-plasma proton acceleration at high repetition rate are introduced. The assembly is based on a multi-target rotating wheel capable of hosting ...
A Single-Particle Trigger for Time-of-Flight Measurements in Prompt-Gamma Imaging

Martins, Paulo Magalhaes; Dal Bello, Riccardo; Seimetz, Michael; Hermann, German; Kihm, Thomas; Seco, Joao (Frontiers Media, 2020-05-26)

[EN] Tracking of single particles accelerated by synchrotrons is a subject that crosses several physics fields. The high clinical intensities used in particle therapy that can exceed 10(9)p/s make this task very challenging. ...
Analysis of the Statistical Moments of the Scintillation Light Distribution With dSiPMs

Conde Castellanos, Pablo Eloy; González Martínez, Antonio Javier; Gonzalez, A.; Hernández Hernández, Liczandro; Bellido, P.; Crespo Navarro, Efren; Iborra Carreres, Amadeo; Moliner Martínez, Laura; Rigla Pérez, Juan Pablo; Rodríguez Álvarez, María José; Sanchez, F.; Seimetz, Michael; Soriano Asensi, Antonio; Vidal San Sebastián, Luis Fernando; Benlloch Baviera, Jose María (Institute of Electrical and Electronics Engineers (IEEE), 2015-10)

In gamma-ray detectors, monolithic scintillation crystals offer the possibility of preserving the scintillation light distribution especially when painted black. The statistical moments of this distribution provide accurate ...
Aplicación de métodos de machine learning a la espectroscopía de protones acelerados por láser

Calatayud Giner, Javier (Universitat Politècnica de València, 2019-10-03)

[ES] En este trabajo de fin de grado se ha desarrollado un sistema de clasificación automática de imágenes microscópicas basado en tecnología de Deep Learning. Estas imágenes son el resultado de un experimento en el que ...
Attenuation correction without transmission scan for the MAMMI breast PET

Soriano Asensi, Antonio; González Martínez, Antonio Javier; Orero Palomares, Abel; Moliner Martínez, Laura; Carles Fariña, Montserrat; Sánchez Martínez, Filomeno; Benlloch Baviera, Jose María; Correcher Salvador, Carlos; Carrilero Lopez, Vicente; Seimetz, Michael (Elsevier, 2011-08-21)

[EN] Whole-body Positron Emission Tomography (PET) scanners are required in order to span large Fields of View (FOV). Therefore, reaching the sensitivity and spatial resolution required for early stage breast tumor ...
Calibration and Performance Tests of Detectors for Laser-Accelerated Protons

Seimetz, Michael; Bellido, P.; Soriano Asensi, Antonio; García López, J.; Jiménez-Ramos, M.C.; Fernández, B.; Conde Castellanos, Pablo Eloy; Crespo Navarro, Efren; González Martínez, Antonio Javier; Hernández Hernández, Liczandro; Iborra Carreres, Amadeo; Moliner Martínez, Laura; Rigla Pérez, Juan Pablo; Rodríguez Álvarez, María José; Sanchez, F.; Sanchez, S.; Vidal San Sebastián, Luis Fernando; Benlloch Baviera, Jose María (Institute of Electrical and Electronics Engineers (IEEE), 2015)

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 ...
Characterization of protons accelerated from a 3 TW table-top laser system

Bellido-Millán, Pablo Jesús; Lera, Roberto; Seimetz, Michael; Ruiz-de la Cruz, Alexandro; Torres Peiró, Salvador; Galán, M.; Mur, P.; Sánchez, I.; Zaffino, R.; Vidal San Sebastian, Luis Fernando; Soriano Asensi, Antonio; Sánchez-Góez, Sebastián; Sánchez Martínez, Filomeno; Rodríguez-Álvarez, M.J.; Rigla, J.P.; Moliner Martínez, Laura; Iborra Carreres, Amadeo; Hernández Hernández, Liczandro; Grau-Ruiz, Daniel; González Martínez, Antonio Javier; García-Garrigos, Juan José; Díaz Caballero, Elena; Conde-Castellanos, Pablo Eloy; Aguilar-Talens, Albert; Roso, Luis; Benlloch Baviera, Jose María (IOP Publishing, 2017-05)

[EN] We report on benchmark tests of a 3 TW/50 fs, table-top laser system specifically developed for proton acceleration with an intrinsic pump rate up to 100 Hz. In two series of single-shot measurements differing in pulse ...
Correction algorithms for signal reduction in insensitive areas of a small gamma camera

Seimetz, Michael; Orero Palomares, Abel; Morera Ballester, Constantino; Abellan Castillo, Adoracion Inmaculada; Polo Collado, Ramiro; Hernández Hernández, Liczandro; Vidal San Sebastián, Luis Fernando; Soriano Asensi, Antonio; Pavón Hernández, Noriel; Benlloch Baviera, Jose María (IOP Publishing, 2014-05)

The radiation sensitive part of the wide-field, small gamma camera Sentinella 108 consists of a monolithic, 102 x 102 mm2 wide CsI(Na) crystal coupled to four position-sensitive photomultipliers. These are read out via a ...
Design and evaluation of the MAMMI dedicated breast PET

Moliner Martínez, Laura; González Martínez, Antonio Javier; Soriano Asensi, Antonio; Sánchez Martínez, Filomeno; Correcher Salvador, Carlos; Orero Palomares, Abel; Carles Fariña, Montserrat; Vidal San Sebastián, Luis Fernando; Barberá Ballester, Julio; Caballero Ontanaya, Luis; Seimetz, Michael; Vazquez Barreiros, Carlos; Benlloch Baviera, Jose María (American Association of Physicists in Medicine, 2012-09)

Purpose: A breast dedicated positron emission tomography (PET) scanner has been developed based on monolithic LYSO crystals coupled to position sensitive photomultiplier tubes (PSPMTs). In this study, we describe the ...
Detector blockbased on arrays of 144 SiPMs and monolithic scintillators: A performane study

González Martínez, Antonio Javier; Conde Castellanos, Pablo Eloy; Iborra Carreres, Amadeo; Aguilar, A.; Bellido, P.; Garcia-Olcina, R.; Hernández Hernández, Liczandro; Moliner Martínez, Laura; Rigla, J. P.; Rodríguez Álvarez, María José; Sánchez, F; Seimetz, Michael; Soriano Asensi, Antonio; Torres, Jose; Vidal San Sebastián, Luis Fernando; Benlloch Baviera, Jose María (Elsevier, 2015-07-01)

[EN] We have developed a detector block composed by a monolithic LYSO scintillator coupled to a custom made 12 12 SiPMs array. The design is mainly focused to applications such as Positron Emission Tomography. The ...
Development of a few TW Ti:Sa laser system at 100 Hz for proton acceleration

Lera, Roberto; Bellido-Millán, Pablo Jesús; Sánchez, I.; Mur, P.; Seimetz, Michael; Benlloch Baviera, Jose María; Roso, Luis; Ruiz-de la Cruz, A. (Springer-Verlag, 2019-01)

[EN] We report the development of a table-top high peak power Titanium:Sapphire (Ti:Sa) CPA laser working at 100 Hz capable of delivering 205 mJ, 55 fs pulses. Every amplification stage is pumped by Nd-doped solid-state ...
DISEÑO Y DESARROLLO DE UN SELECCIONADOR ENERGÉTICO DE PROTONES

Esteban Blasco, David (Universitat Politècnica de València, 2023-09-06)

[ES] Debido a los altos costes y el gran tamaño asociado a los actuales aceleradores de protones, es necesario estudiar nuevas tecnologías que permitan dotar de una mayor accesibilidad a la aceleración de protones para ...
Dosimetric Calibration of Radiochromic Film For Laser-accelerated Proton Beams

Bellido, P.; Seimetz, Michael; Soriano, A.; Huertas, C.; García Lopez, J.; Jimenez-Ramos, M. C:; Fernandez, B.; Conde, P.; Crespo, E.; González Martínez, Antonio Javier; Hernández, L.; Iborra, A.; Martos, F.; Moliner, L.; Rigla, J. P.; Rodríguez-Álvarez, M. J.; Sánchez, F.; Vidal San Sebastian, Luis Fernando; Benlloch Baviera, Jose María (IEEE, 2013-11-02)

[Otros] When 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 ...
Effect of noise in CT image reconstruction using QR- Decomposition algorithm

Iborra, A.; Rodríguez-Álvarez, M. J.; Soriano, A.; Sánchez, F.; Bellido, P.; Conde, P.; Crespo, E.; González Martínez, Antonio Javier; Martos, F.; Moliner, L.; Rigla, J. P.; Seimetz, Michael; Vidal San Sebastian, Luis Fernando; Benlloch Baviera, Jose María (IEEE, 2013-11-02)

[EN] The QR-Decomposition algorithm for CT 3D image reconstruction uses a linear system of equations to model the CT system response. Linear systems have a condition number that can be used to estimate the image noise. ...
Efficient proton acceleration from a 3 TW table-top laser interacting with submicrometric mass-produced solid targets

Zaffino, R.; Seimetz, Michael; Ruiz-de la Cruz, A.; Sánchez, I.; Mur, P.; Quirión, D.; Bellido-Millán, Pablo Jesús; Lera, Roberto; Martín, L.; Benlliure, J.; Benlloch Baviera, Jose María; Lozano, M.; Pellegrini, G. (IOP Publishing, 2018-04)

[EN] Thin layer membranes with controllable features and material arrangements are often used as target materials for laser driven particle accelerators. Reduced cost, large scale fabrication of such membranes with high ...
Electromagnetic pulse generation in laser-proton acceleration from conductive and dielectric targets

Seimetz, Michael; Bellido, P.; Mur, P.; Lera, R.; Ruiz-de la Cruz, A.; Sánchez, I.; Zaffino, R.; Benlliure, J.; Ruiz, C.; Roso, L.; Benlloch Baviera, Jose María (IOP Publishing, 2020-11)

[EN] Laser-plasma interactions at high intensities are often accompanied by emission of a strong electromagnetic pulse (EMP) interfering with particle detectors or other electronic equipment. We present experimental evidence ...
Experimental Setup for Irradiation of Cell Cultures at L2A2

Torralba, Alberto; Palenciano-Castro, Lidia; Reija, Alicia; Rigla, Juan Pablo; Peñas, Juan; Llerena, Juan José; Contreras-Martinez, Ramiro; Benlliure, José; Vega, Ana; Aguado-Barrera, Miguel Elías; Ruiz, Camilo; Seimetz, Michael (MDPI AG, 2022-03)

[EN] Laser-plasma proton sources and their applications to preclinical research has become a very active field of research in recent years. In addition to their small dimensions as compared to classical ion accelerators, ...
High resolution and sensitivity gamma camera with active septa. A first Monte Carlo study

Ilisie, Victor; Moliner, Laura; Oliver-Gil, Sandra; Sánchez Martínez, Filomeno; González Martínez, Antonio Javier; Seimetz, Michael; Rodríguez Álvarez, María José; Benlloch Baviera, Jose María (Nature Publishing Group, 2019-12-05)

[EN] Gamma cameras are of great interest due to their high potential in the field of Nuclear Medicine Imaging. They allow for an early diagnosis of reduced size tumors, and also for a wide variety of preclinical studies ...
Noise Analysis in Computed Tomography (CT) Image Reconstruction using QR-Decomposition Algorithm

Iborra Carreres, Amadeo; Rodríguez Álvarez, María José; Soriano Asensi, Antonio; Sanchez, F.; Bellido, P.; Conde Castellanos, Pablo Eloy; Crespo Navarro, Efren; González Martínez, Antonio Javier; Moliner Martínez, Laura; Rigla Pérez, Juan Pablo; Seimetz, Michael; Vidal San Sebastián, Luis Fernando; Benlloch Baviera, Jose María (Institute of Electrical and Electronics Engineers (IEEE), 2015-06)

In this paper, the noise of 3D computed tomography (CT) image reconstruction using QR-Decomposition is analyzed. There are several types of image noise that can interfere with the interpretation of an image. Here, the ...
PADC nuclear track detector for ion spectroscopy in laser-plasma acceleration

Seimetz, Michael; Peñas, J.; Llerena, J. J.; Benlliure, J.; García López, J.; Millán-Callado, M. A.; Benlloch Baviera, Jose María (Elsevier, 2020-08)

[EN] The transparent polymer polyallyl-diglycol-carbonate (PADC), also known as CR-39, is widely used as detector for heavy charged particles at low fluence. It allows for detection of single protons and ions via formation ...