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A Digital Signal Processor for Particle Detectors
To cope with the new running conditions in the ALICE experiment at the Large Hadron Collider at CERN, a new integrated circuit named SAMPA has been created that can process 32 analogue channels, convert them to digital, perform filtering and compression, and transmit the data on high speed links to the data acquisition system. The main purpose of this work is to specify, design, test and verify the digital signal processing part of the SAMPA device to accommodate the requirements of the detectors involved. Innovative solutions have been employed to reduce the bandwidth required by the detectors, as well as adaptations to ease data handling later in the processing chain. The new SAMPA device was built to replace two existing circuits, in addition to reducing the current consumption, and doubling the amount of processing channels. About 50000 of the devices will be installed in the Time Projection Chamber and Muon Chamber detectors in the ALICE experiment.
Techno-Scientific Practices
In scholarly debates, as well as in everyday parlance, we tend to pull science and technology apart: science gives us theory, and technology applies it. In practice, however, science and technologies are highly intertwined. In Techno-Scientific Practices: An Informational Approach, Federica Russo looks at the practice of science and elucidates the role of technologies and instruments in the process of knowledge production. In this exercise, it becomes evident that technologies cannot be analyzed on their own, but always in relation to epistemic agents. Thus, Techno-Scientific Practices emphasizes the importance of analyzing the process of knowledge production in techno-scientific contexts, in which there is a triad of relations to look at: us, the instruments, and the world. The book thus builds bridges between the philosophy of science, philosophy of technology, and science and technology studies in an unprecedent way.
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