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5 result(s) for "Colledani, C"
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New developments in CVD diamond for detector applications
AbstractChemical Vapor Deposition (CVD) diamond has been discussed extensively as an alternative sensor material for use very close to the interaction region of the LHC and other machines where extreme radiation conditions exist. During the last seven years the RD42 collaboration has developed diamond detectors and tested them with LHC electronics towards the end of creating a device usable by experiments. The most recent results of this work are presented. Recently, a new form of CVD diamond has been developed: single crystal CVD diamond which resolves many of the issues associated with poly-crystalline CVD material. The first tests of this material are also presented.
Performance studies of the CE-65v2 MAPS prototype structure
With the next upgrade of the ALICE inner tracking system (ITS3) as its primary focus, a set of small MAPS test structures have been developed in the 65 nm TPSCo CMOS process. The CE-65 focuses on the characterisation of the analogue charge collection properties of this technology. The latest iteration, the CE-65v2, was produced in different processes (standard, with a low-dose n-type blanket, and blanket with gap between pixels), pixel pitches (15, 18, 22.5 \\(\\)m), and pixel arrangements (square or staggered). The comparatively large pixel array size of \\(4824\\) pixels in CE-65v2 allows the uniformity of the pixel response to be studied, among other benefits. The CE-65v2 chip was characterised in a test beam at the CERN SPS. A first analysis showed that hit efficiencies of \\( 99\\%\\) and spatial resolution better than 5 \\(\\)m can be achieved for all pitches and process variants. For the standard process, thanks to larger charge sharing, even spatial resolutions below 3 \\(\\)m are reached, in line with vertex detector requirements for the FCC-ee. This contribution further investigates the data collected at the SPS test beam. Thanks to the large sensor size and efficient data collection, a large amount of statistics was collected, which allows for detailed in-pixel studies to see the efficiency and spatial resolution as a function of the hit position within the pixels. Again, different pitches and process variants are compared.
The ILD Detector: A Versatile Detector for an Electron-Positron Collider at Energies up to 1 TeV
The International Large Detector, ILD, is a detector concept for an experiment at a future high energy lepton collider. The detector has been optimised for precision physics in a range of energies from 90~GeV to about 1~TeV. ILD features a high precision, large volume combined silicon and gaseous tracking system, together with a high granularity calorimeter, all inside a central solenoidal magnetic field. The paradigm of particle flow has been the guiding principle of the design of ILD. ILD is based mostly on technologies which have been demonstrated by extensive research and test programs. The ILD concept is proposed both for linear and circular lepton collider, be it at CERN or elsewhere. The concept has been developed by a group of nearly 60 institutes from around the world, and offers a well developed and powerful environment for science and technology studies at lepton colliders. In this document, the required performance of the detector, the proposed implementation and the readiness of the different technologies needed for the implementation are discussed.
Radiation Tolerance of CMOS Monolithic Active Pixel Sensors with Self-Biased Pixels
CMOS Monolithic Active Pixel Sensors (MAPS) are proposed as a technology for various vertex detectors in nuclear and particle physics. We discuss the mechanisms of ionizing radiation damage on MAPS hosting the the dead time free, so-called self bias pixel. Moreover, we discuss radiation hardened sensor designs which allow operating detectors after exposing them to irradiation doses above 1 Mrad
Validation of the German work-related basic need satisfaction scale (W-BNS-G)
Currently, there is no validated German tool that captures the basic needs as outlined in Self-Determination Theory (SDT) in the organizational context. To be able to collect reliable and valid data for research and use the results of German research on SDT to derive and implement empirically grounded practical implications that foster employee well-being, performance, and companies’ growth, a validated measurement tool is a compulsory requirement. Therefore, this study aimed to develop and validate a German version of the Work-related Basic Need Satisfaction scale. (W-BNS). We replicated the three-factor structure, as well as the reliability of the three subscales and could extensively confirm the construct- and the criterion-related validity of the original W-BNS for the German version (W-BNS-G, N  = 648). Additionally, multi-group comparisons were conducted to investigate cultural measurement invariance with the Dutch and the Italian version of the W-BNS. In summary, the present study provides a tool with high reliability and validity assessing the basic needin the organizational context in German language. We address the potential comparability of German, Italian, and Dutch findings using the different versions of the W-BNS and conclude by discussing the limitations of the present study and deriving suggestions for future research.