The New Small Wheel Low Voltage Power supply DCS for the ATLAS experiment

A series of upgrades are planned for the LHC accelerator to increase it's instantaneous luminosity to ${7.5 \times 10^{34}}cm^{-2}s^{-1}$. The luminosity increase drastically impacts the ATLAS trigger and readout data rates. The present ATLAS Small Wheel Muon(SW) detector will be replaced with a New Small Wheel detector which is expected to be installed in the ATLAS underground cavern by the end of the Long Shutdown 2 of the LHC. Due to its complexity and long-term operation, the New Small Wheel(NSW) requires the development of a sophisticated Detector Control System (DCS). The use of such a system is necessary to allow the detector to function consistently and safely as well as a seamless interface to all sub-detectors and the technical infrastructure of the experiment. The central system handles the transition between the probe's possible operating states while ensuring continuous monitoring and archiving of the system's operating parameters. Any abnormality in any subsystem of the detector triggers a signal or alert (alarm), which notifies the user and either adapts to automatic processes or allows manual actions to reset the system to function properly. The part that will be described is the modular system of Low Voltage(LV). Among its core features are remote control , split of radiation sensitive parts from parts that can be housed in a hostile area and compatibility with operation under radiation and magnetic field as in the ATLAS cavern. The new Low Voltage Intermediate Control Station will be used to power the LVDB boards of the NSW and through them, the L1DDC and ADDC boards of the system providing readout data and functioning safely.