Abstract
Control and monitoring of experimental facilities as well as laboratory equipment requires handling a blend of different tasks. Often in industrial or scientific fields there are standards or form factor to comply with and electronic interfaces or custom busses to adopt. With such tight boundary conditions, the integration of an off-the-shelf Single Board Computer (SBC) is not always a possible or viable alternative. The availability of electronic schematics and PCBs with open-source Hardware license for various SBCs overcomes such integration problems, making feasible the implementation of a custom architecture composed by a central core inherited from a vendor reference design (most likely the microprocessor, static RAM and flash memory) augmented with application-specific integrated circuits and hardware resources, in order to handle the requirements of the specific environment. The user is then able to exploit most of the supported tools and software provided by opensource community, fulfilling all the constraints enforced by his environment. We have used such an approach for the design and development of the monitoring system of the endcap electromagnetic calorimeter of the Belle II experiment, presently running at KEK Laboratory (Tsukuba, Japan). Here we present and discuss the main aspects of the hardware architectures and noise performances tailored on the needs of a detector designed around CsI crystal scintillators.
Highlights
In last years a wide selection of ARM controllers offered by several vendors feature high performances, low power consuming and very low cost
In this paper we present the uSOP system, a Single Board Computer, based on a versatile and expandable miroprocessor, used in Belle II [1] experiment at KEK Laboratory for monitoring the endcap electromagnetic calorimeter
The uSOP board is based on the use of a powerful arm processor interfaced with a high performance data acquisition System-On-Chip
Summary
In last years a wide selection of ARM controllers offered by several vendors feature high performances, low power consuming and very low cost. In addition such controllers can be interfaced with a huge set number of peripherals like analog coverters, serial-bus and network controllers, just to mention some of them. This hardware is directly supported by vendors in term of evaluation boards, code tools for analysis and tuning of hardware. The noise rejection power capability within the uSOP system has been tested in laboratory, results and performances are described in the following
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