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An exhaustive model for designing microsphere and microbubble sensing set-ups is illustrated. The computer code is validated via the comparison of the simulation with the experiment. The considered system employs a pair of identical LPGs with a fiber taper in between. The microsphere and microbubble resonators are coupled via the tapered fiber. The pair of identical LPGs allow multiple selective coupling...
ATLAS is a general purpose particle physics experiment located on the LHC collider at CERN. The ATLAS Trigger system consists of two levels, the first level (L1) implemented in hardware and the High Level Trigger (HLT) implemented in software running on a computing cluster of commodity CPUs. The HLT reduces the trigger rate from the 100 kHz L1 accept rate to 1 kHz for recording, requiring an average...
Valuable documents are included in the corpus of information, documentation, digital contents produced in the course of projects aimed at studying and defining a preservation (and possibly restoration) plan for a significant piece of cultural heritage. These documents could be exploited to effectively further valorize the cultural heritage and support its fruition by a wide audience of potential users...
With this work we present the activity and performance optimization of the Italian computing centers supporting the ATLAS experiment forming the so-called Italian Cloud. We describe the activities of the ATLAS Italian Tier-2s Federation inside the ATLAS computing model and present some Italian original contributions. We describe StoRM, a new Storage Resource Manager developed by INFN, as a replacement...
A new power supply, PS, system has been recently installed at the European electron cyclotron test facility at CRPP, in Lausanne, Switzerland. The PS system is composed of two power converters, the main high voltage power supply (MHVPS) and the body power supply (BPS), whose combined operation provides the required voltage and current, up to 100 kV and 80 A, for the operation of a high power, 2 MW,...
A 170 GHz, 2 MW, steady state gyrotron is being developed in a collaboration between European research associations and industries to be used for the electron cyclotron resonance heating (ECRH) system of ITER, the next step in nuclear fusion research. The gyrotron is presently in the prototype state. For the test facility dedicated to the testing of this gyrotron, new power supplies need to be procured...
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