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Since over 40 years, delivering state of art Power Supplies and Acquisition Systems for Nuclear, Cosmic and High Energy Physics detectors has been the constant mission of the CAEN R&D groups, working closely with the relevant scientists of major research labs worldwide. This paper will focus on some of these R&Ds concerning new power supplies specifically designed for the HL-LHC and new solutions for data acquisition in large experiments thanks to a modular approach or faster digitizers with open FPGA. The new power supply system, EASY6000, is introduced along its main new features like higher radiation tolerance to safely operate thru the whole LHC life span. Furthermore, the new system power density and efficiency in hostile environment are also analyzed, to better understand how much power can be directly delivered to the front-end of new detectors, moreover the communication link between the experiments and the control rooms is also reviewed. Among the data acquisition solutions a new family of digitizers is introduced featuring open FPGA and faster performance. Alongside, the Front End and Readout System (FERS) is presented: this new architecture provides a scalable and easy customizable data acquisition system, the concept is therefore introduced and the first prototypes are described, with their main characteristics.

Silicon Photomultipliers (SiPM) are a new class of photon sensors with single photon detection capability and high photon detection efficiency. They have been proved to be suitable for an increasing number of applications in science and industry. Nowadays, different companies are investing increasing efforts in SiPM detector performances and high quality mass production, such to make them a natural choice for an always wider field of applications. In this scenario, a flexible and easy-to-use system that allows the measurement of the main SiPM characteristics has become an important platform to exploit SiPMs in different applications. This system can also be used to setup a series of experiments aimed to train physics and engineering undergraduate and master students in detector measurements and statistics analysis.