Characterisation of Hybrid Pixel Detectors with capacitive charge division

In order to fully exploit the physics potential of the future high energy e+ e- linear collider, a Vertex Tracker providing high resolution track reconstruction is required. Hybrid pixel sensors are an attractive technology due to their fast read-out capabilities and radiation hardness. A novel pixel detector layout with interleaved cells between the readout nodes has been developed to improve the single point resolution. The results of the characterisation of the first processed prototypes are reported.Comment: 5 pages, 2 figures, presented at LCWS2000, Linear Collider Workshop, October 24-28 2000, Fermi National Accelerator Laboratory, Batavia, Illinois, U.S.A. Proceedings to be published by the American Institute of Physic

A Pixel Vertex Tracker for the TESLA Detector

In order to fully exploit the physics potential of a e+e- linear collider, such as TESLA, a Vertex Tracker providing high resolution track reconstruction is required. Hybrid Silicon pixel sensors are an attractive sensor technology option due to their read-out speed and radiation hardness, favoured in the high rate TESLA environment, but have been so far limited by the achievable single point space resolution. A novel layout of pixel detectors with interleaved cells to improve their spatial resolution is introduced and the results of the characterisation of a first set of test structures are discussed. In this note, a conceptual design of the TESLA Vertex Tracker, based on hybrid pixel sensors is presentedComment: 20 pages, 11 figure

High Resolution Hybrid Pixel Sensors for the e+e- TESLA Linear Collider Vertex Tracker

In order to fully exploit the physics potential of a future high energy e+e- linear collider, a Vertex Tracker, providing high resolution track reconstruction, is required. Hybrid Silicon pixel sensors are an attractive option, for the sensor technology, due to their read-out speed and radiation hardness, favoured in the high rate environment of the TESLA e+e- linear collider design but have been so far limited by the achievable single point space resolution. In this paper, a conceptual design of the TESLA Vertex Tracker, based on a novel layout of hybrid pixel sensors with interleaved cells to improve their spatial resolution, is presented.Comment: 12 pages, 5 figures, to appear in the Proceedings of the Vertex99 Workshop, Texel (The Netherlands), June 199

Review-Development of Huckel Type Anions: From Molecular Modeling to Industrial Commercialization. A Success Story

This paper reviews the battery electrolyte technologies involving Huckel-type salts as a major electrolyte component. The concept was initially proposed by M. Armand in 1995 and then explored by several research groups. In the present review studies on the optimization of the electrolyte composition starting from molecular modeling through enhancing the yield of the salt synthesis to structural characterization and electrochemical performance are described. Furthermore, the use of the optimized electrolytes in a variety of lithium-ion and post-lithium batteries is presented and discussed. Finally, the commercialization of the up to date technology by Arkema is discussed as well as the performance of the present Huckel anion based electrolytes as compared to other marketed electrolyte technologies

The equivalent amplitude stress as a solution of mean stress effect problem in fatigue analysis

У роботі представлено числовий алгоритм, який дозволяє вибирати різні схеми навантаження конструкції, наприклад, гідроциліндра, відповідно до заданих кривих Велера, що характеризують опір матеріалу на втомне руйнування. Проаналізовано гідроциліндри, які розглянуті в проекті E. C. \"PROHIPP\", і запропоновано деякі розв'язки задачі про тріщину в області штуцера. Показано, що просочування олії в зоні з’єднання штуцера може бути усунуто після деяких модифікацій конструкції.In this paper a numerical algorithm is presented to make possible adopting different loading sche­mes of specific structure at hand for instance hydraulic cylinders, to specific Wцhler curves cha­racterizing fatigue resistance of given material. Hydraulic cylinders investigated under E. C. project \"PROHIPP\" are analyzed and some solutions of the crack problem in oil port area are proposed. Oil penetration in an oil port connection zone can be eliminated after some design modifications.В работе представлен численный алгоритм, позволяющий выбирать различные схемы нагружения конструкции, например, гидроциллиндра, в соответствии с заданными кривыми Вёлера, характеризующими сопротивление материала усталостному разрушению. Проанализированы гидроциллиндры, рассматриваемые в проекте E. C. \"PROHIPP\", и предложены некоторые решения задачи о трещине в области штуцера. Показано, что просачивание масла в зоне соединения штуцера может быть устранено после некоторых модификаций конструкции