A Front-End Test Stand for the Analog ASICs of the ATLAS LAr Calorimeter HL-LHC Upgrade

International audienceThis paper describes the development of a common front-end test stand for the analog ASICs, which are part of the effort to develop the front-end electronics for the ATLAS LAr calorimeter HL-LHC (High Luminosity LHC) upgrade. The common test stand consists of the front-end test board, toy calorimeters, ASIC mezzanine boards and the DAQ system. The front-end test board is the bridge between the DAQ system and the ASIC mezzanine, it integrates two 16-channel ADCs for digitizing the outputs of the analog ASIC and a calibration pulse generator for detector signal injection. The analog ASICs under test are mounted on the ASIC mezzanine boards, their outputs are connected to the front-end test board through an FMC connector. A Xilinx ZC706 evaluation board is utilized as the DAQ board for this test stand, a Gigabit Ethernet link is implemented on the DAQ board for slow control, configuration and ADC data transmission. The tests of two front-end analog ASICs with this test stand are ongoing. The preliminary test results demonstrated that this test stand is suitable for the testing of the multi-channel analog ASICs developed for the LAr Calorimeter HL-LHC upgrade

Methods of reducing measurement uncertainties when using digital recorders

NRC publication: Ye

New Results from the NUMEN Project

International audienceNUMEN aims at accessing experimentally driven information on Nuclear Matrix Elements (NME) involved in the half-life of the neutrinoless double beta decay (0νββ), by high-accuracy measurements of the cross sections of Heavy Ion (HI) induced Double Charge Exchange (DCE) reactions. First evidence about the possibility to get quantitative information about NME from experiments is found for the (^18O,^18Ne) and (^20Ne,^20O) reactions. Moreover, to infer the neutrino average masses from the possible measurement of the half-life of 0νββ decay, the knowledge of the NME is a crucial aspect. The key tools for this project are the high resolution Superconducting Cyclotron beams and the MAGNEX magnetic spectrometer at INFN Laboratori Nazionali del Sud in Catania (Italy). The measured cross sections are extremely low, limiting the present exploration to few selected isotopes of interest in the context of typically low-yield experimental runs. A major upgrade of the LNS facility is foreseen in order to increase the experimental yield of at least two orders of magnitude, thus making feasible a systematic study of all the cases of interest

New experimental campaign of NUMEN project

International audienceThe NUMEN main goal is the extraction from measured cross-sections of “data-driven” information on Nuclear Matrix Elements for all the systems candidate for 0νββ. The idea is to use as experimental tool Heavy Ions –Double Charge Exchange (HI-DCE) reactions. Crucial for the experimental challanges is the INFN Laboratori Nazionali del Sud (LNS) facility, made by the Superconducting Cyclotron (CS) and the MAGNEX magnetic spectrometer. The experimental measurements of HI-DCE reactions present a number of challenging aspects, since they are characterized by very low cross sections. Here it is reported the new experimental campaign of NUMEN Project