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A Portable Wireless DAQ System for Gaseous Detectors

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Journal of Electrical Engineering 2014年第4期2卷 153-159页

作者： Luciano Capasso Paolo Branchini antonio Budano Giovanni corradi Wolfango Plastino Diego Tagnani INFN Sezione Rorna Tre Roma 00146 Italy Mathematics and Physics Department University "Roma Tre " Roma 00146 Italy INFN Laboratori Nazionali di Frascati Frascati 00044 Italy

A real-time wireless analog/digital electronic system for the data acquisition of a proportional counter detector is presented. Gaseous detectors working principle is based on the ionization of a gas due to a particle. The ions are then accelerated towards two electrodes and the read out signal is amplified, shaped and discriminated. It is then sent to the DAQ （data acquisition） electronics. The power supply system can be either the common 220 V source or a battery, whose autonomy is about 72 h during data acquisition. The analog electronics are made up of a high voltage generator for the detector＇s electrodes, an amplifier system, a shaper and a discriminator. The digital environment is based on an Arduino Mega-2560 board. A wireless modular shield is plugged on the board, in order to access the Arduino board via the 802.11b/g wireless protocol. Four temperature sensors and two pressure sensors are placed in the surroundings of the detector and they are connected to the system in order to read out environmental conditions. The software application, if required by the user, periodically acquires the data produced by the detector, formats them together with the sensor readings into a frame and sends the frame via UDP to an external server. The server plots the data on a webpage. During the data acquisition, the microcontroller continuously monitors the battery status, in order to safely stop the system in case of low battery. The DAQ system is controlled via a web page hosted inside Arduino, which acts like a server. Such page allows to set the detector working parameters （high voltage, discriminator threshold）, to start the data acquisition, to test the system via a debug panel and to read temperature and pressure sensors. Experimental results are presented.

关键词： DAQ electronics real-time gaseous detector Arduino.

Performances of an Active Target GEM-Based TPC for the AMADEUS Experiment

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Modern Instrumentation 2015年第3期4卷 32-41页

作者： Marco Poli Lener Giovanni corradi Catalina Curceanu Diego Tagnani antonio Romero Vidal Johann Zmeskal Laboratori Nazionali di Frascati dell’INFN Frascati Italy Universidad de Santiago de Compostela Santiago de Compostela Spain Stefan Meyer Institute for Subatomic Physics Vienna Austria

In this paper, we present the R & D activity on a new GEM-based Time Projection Chamber (GEM-TPC) detector for the inner region of the AMADEUS experiment, which is aiming to perform measurements of low-energy negative kaon interactions in nuclei at the DAΦNE e+ e- collider at LNF-INFN. A novel idea of using a GEM-TPC as a low mass target and detector at the same time comes motivated by the need of studying the low energy interactions of K- with nuclei in a complete way, tracking and identifying all of the produced particles. Even more, what makes the experimental proposal revolutionary is the possibility of using different gaseous targets without any other substantial intervention on the experimental setup, making it a flexible multipurpose device. This new detection technique applied to the nuclear physics requires the use of low-radiation length materials and very pure light gases such as Hydrogen, Deuterium, Helium-3, Helium-4, etc. In order to evaluate the GEM-TPC performances, a 10 × 10 cm2 prototype with a drift gap of 15 cm has been realized. The detector was tested at the πM1 beam facility of the Paul Scherrer Institut (PSI) with low momentum pions and protons. Detection efficiency and spatial resolution, as a function of gas mixture, gas gain and ionazing particle, are reported and discussed.

关键词： GEM TPC Tracking Particle Identification

Investigation of Galactic open cluster remnants： the case of NGC 7193

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Research in Astronomy and Astrophysics 2017年第1期17卷 31-54页

作者： Mateus de Souza Angelo Joao Francisco Coelho dos Santos Jr Wagner Jose Barbosa corradi Francisco Ferreira de Souza Maia Andres Eduardo Piatti Departamento de Fisica ICEx Universidade Federal de Minas Gerais Av. Antonio Carlos 6627 31270-901 Belo Horizonte MG Brazil Observatorio Astronomico Universidad Nacional de Cordoba Laprida 854 5000 Cordoba Argentina Consejo Nacional de Investigaciones Cientificas y Tecnicas Av. Rivadavia 1917 C1033AAJ Buenos AiresArgentina

Galactic open clusters （OCs） that survive the early gas-expulsion phase are gradually de- stroyed over time by the action of disruptive dynamical processes. Their final evolutionary stages are characterized by a poorly populated concentration of stars called an open cluster remnant （OCR）. This study is devoted to assessing the real physical nature of the OCR candidate NGC 7193. GMOS/Gemini spectroscopy of 53 stars in the inner target region were obtained to derive radial velocities and at- mospheric parameters. We also employed photometric and proper motion data. The analysis method consists of the following steps：（i） analysis of the statistical resemblance between the cluster and a set of field samples with respect to the sequences defined in color-magnitude diagrams （CMDs）; （ii） a 5-dimensional iterative exclusion routine was employed to identify outliers from kinematical and posi- tional data; （iii） isochrone fitting to thes× （J - Ks） CMD of the remaining stars and the dispersion of spectral types along empirical sequences in the （J - H） × （H - Ks） diagram were checked. A group of stars was identified for which the mean heliocentric distance is compatible with that obtained via isochrone fitting and whose metallicities are compatible with each other. Fifteen of the member stars observed spectroscopically were identified together with another 19 probable members. Our results indi- cate that NGC 7193 is a genuine OCR, of a once very populous OC, for which the following parameters were derived： d = 501±46 pc, t = 2.5±1.2 Gyr, （[Fe/H]） = -0.17±0.23 and E（B-V） = 0.05±0.05. Its luminosity and mass functions show depletion of low mass stars, confirming the OCR is in a dynam- ically evolved state.

关键词： open cluster remnants - Galactic open clusters

陡峭且地震活跃的西北地中海利古里亚陆缘海底失稳和沉积物运移

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海洋地质 2009年第1期25卷 62-63页

作者： antonio Cattaneo Sebastien Migeon Christophe Larroque Etienne Ruellan Franqoise Sage Marc Sosson Nicola corradi Yves Le Gonidec Francesco Fanucci 杨丽娟（译）闫章存（校对）海洋开发研究院法国尼斯地球科学实验室法国热那亚大学意大利雷恩第一大学法国的里雅斯特大学意大利不详

利古里亚陆缘地形陡峭，表现为复杂的继承性地壳运动构造、易变的下切谷以及众多的海底滑坡。这部分陆缘经常受到地震（历史上有四次地震，分别是公元1564年、1644年、1817年和1887年）和海啸（公元1564年、1817年、1887年和1979年）的... 详细信息

利古里亚陆缘地形陡峭，表现为复杂的继承性地壳运动构造、易变的下切谷以及众多的海底滑坡。这部分陆缘经常受到地震（历史上有四次地震，分别是公元1564年、1644年、1817年和1887年）和海啸（公元1564年、1817年、1887年和1979年）的影响。在这个人口密集的海岸带，人们对地震和海啸的高度关注是实施两次海上计划（Malisarl和Malisar2），对沉积物滑坡触发机制进行调查的深层次的原因。2006年采集到的资料包括尼斯到热那亚之间水深100～2500m的EM300多波束资料、3—5kHz浅层剖面以及24道或72道地震剖面。

关键词：地震剖面沉积物运移海底滑坡陆缘地中海失稳地壳运动