A scalable High Voltage Power Supply System with system on chip control for Micro Pattern Gaseous Detectors

The requirements posed to high voltage power supply systems by the operation of Micro Pattern Gaseous Detectors are specific in terms of high resolution diagnostic features and intelligent dynamic voltage control. These requirements are needed both when technology development is performed and when extended detector systems are supplied and monitored. Systems satisfying all the needed features are not commercially available. A single channel high voltage system matching the Micro Pattern Gaseous Detector needs has been designed and realized, including its hardware and software components. The system employs a commercial DCDC converter and is coupled to a custom high resolution ammeter. Local intelligence, flexibility and high speed inter-connectivity are provided by a System on Chip Board and the use of a powerful FPGA. The single channel system has been developed, as critical milestone towards the realization of a multi-channel system. The design, implementation and performance of the system are reported in detail in this article, as well as the performance of the single channel power supply when connected to a Micro Pattern Gaseous Detector in realistic working condition during a test beam exercise

Importancia y propuestas de valoraci\uf3n desde la psicolog\ueda de la religiosidad en las causas de nulidad matrimonial

En este trabajo se defiende, tanto desde un punto de vista te\uf3rico como real, que la valoraci\uf3n de la religiosidad (tanto cuantitativamente, como cualitativamente) es posible y necesaria en los peritajes psicol\uf3gicos de nulidad matrimonial. En un primer momento se realiza una revisi\uf3n de textos de la Iglesia que exponen la importancia de valorar los aspectos psicol\uf3gicos, as\ued como la religiosidad de los contrayentes. Estos aspectos influyen directamente en el matrimonio, tal y como se demuestra en diferentes investigaciones. En general, las personas religiosas tienen matrimonios m\ue1s felices y con menos rupturas. La religiosidad, desde un punto de vista psicol\uf3gico, no s\uf3lo es una dimensi\uf3n cuantitativa (m\ue1s o menos religioso), sino que tambi\ue9n es cualitativa (por ejemplo, religiosidad infantil frente a adulta o madura). Se presentan, a modo de ejemplo, tres modelos psicol\uf3gicos para evaluar la religiosidad (de los autores: V\ue1zquez, Fowler y Oser)

The North American Invasion of the Giant Resin Bee (Hymenoptera: Megachilidae)

Volume: 14Start Page: 69End Page: 7

Molecular evidence for paraphyly in Nyctomys sumichrasti : support for a new genus of vesper mice? /

no.306 (2011

DAQ platform based on SoC-FPGA for high resolution time stamping in cosmic ray detection

Accurate timing in cosmic ray detection is critical for reconstruction of events from multiple scattered detectors. Since most of the detectors dedicated to study cosmic rays generate continuous analog signals, a precise timing depends on the sampling rate and the subsequent triggering system operating on the generated digital data stream. In this paper, a data acquisition platform based on a fully programmable System-On-Chip (SoC) and a high-speed analog to digital converter, able to manage 8-bit data resolution, 500MHz sampling rate and GPS connection for data synchronization is presented. The SoC is a ZYNQ 7000 device with a Field Programmable Gate Array (FPGA) and a dual core ARM processor embedded on a single chip. The system achieves 2 ns time resolution and is also able to increase data amplitude resolution through oversampling and can simultaneously generate a real time histogram of the incoming data. The platform has an embedded high voltage power supply control with temperature and pressure compensation for optimal and stable operation of different detectors. While the time critical activities are handled and carried out by the FPGA, software running on the dual core ARM processor with a real time operating system (FreeRTOS) provides Ethernet connection for remote control of the platform