Magnetic resilience studies for power supplies

Abstract

It is well understood that modern physics experiments often require more Low Voltage power to be delivered to front-end electronics than was needed in past, and that the most effective and efficient means of delivering this LV power requires that the power supplies be placed as close as possible to the detector. Unfortunately, this means that the LV power supplies must be more robust and tolerant to radiation and magnetic fields typically present in such an environment.Designing a power supply capable of operating in such an environment is not a trivial task. It is first necessary to fully assess and understand these special conditions before one can begin to identify the power supply typology and components to be used. In this manuscript we will illustrate the design process of the CAEN EASY BRIC1 (B & Rad tolerant Intermediate Converter), an intermediate converter utilized to power the front-end electronics (12 V to 300 V) of the ATLAS-NSW experiment. The complete process is described, from design choice, to component selection, to circuit testing from B=0 to 1 T, and finally deployment and testing the complete power supply in an operational environment.