A first look @ SOP for Belle2 A. Aloisio, R. Giordano Univ. of Naples ‘Federico II’ and INFN – Sez. di Napoli A. Anastasio, G. Tortone INFN – Sez. di Napoli May. 10th, 2014

Service Oriented Platform (SOP) Cortex A8 uP @ 1GHz Linux OS (Debian) 2 GB Flash 512 MB RAM Designed as a possible general slow-control platform for Belle2 Designed for easy maintainability 3U Eurocard form factor Derived from and compatible with BeagleBoneBlack open source project by Texas Instruments

Front Side 2x USB device 10/100 Ethernet microSD card Monitoring LEDs Power Supply via USB (device) or 5V input Board management via an IPMI*-like interface over 10/100 Ethernet uP Reset Power cycle Loading of bootloader OS flashing uP UART0 console over Ethernet LEDs USB (device) Ethernet microSD USB (host) IPMI-like over Ethernet *Intelligent Platform Management Interface

Rear Side Fully Isolated I/O: Non Isolated I/O: 2x I2C SPI RS232 JTAG All IOs fail proof (?) Non Isolated I/O: Digital IO On-chip ADCs On chip ADC JTAG SPI 2x I2C RS232

Project Status - Hardware Design of first version completed PCB manufacturing completed (10 layers) #5 PCBs delivered @ INFN Na Assembly of 4 units in progress Then tests, debug, troubleshooting, …

Project Status - Software Linux distribution available and open-source (Debian) Software for JTAG programming of Xilinx FPGA completed and tested successfully Software for ADC read-out via I2C in progress Software for IPMI-like features in progress Hot tasks: Integration in EPICS Definition of high-level software architecture : push vs. pull publish/subscribe synchronous vs. asynchronous Network usage and role web or stand-alone GUI

Sensors and more Slow controls deal with 3 types of sensors Thermo-resistance Humidity Current probes Slow acquisition rate (fraction of Hz) High accuracy In Belle-II it is presently done by means of HP multi-meter with analogue mux SOP will/could be interfaced with custom Roma3 preamp, such to provide a low-performance but self-contained DAQ framework

Temperature Monitoring In this revision, SOP does not include peripherals. Instead, it supports protocols for remote data acquisition via field busses (I2C, SPI, JTAG, …) For temperature monitoring in Belle2, LTC2499 seems to be a perfect candidate: 24-bit, ΣΔ architecture 50/60 Hz line noise filter 7.5 Hz sampling Rate Direct Sensor Digitizer Direct Temperature Measurement I2C interface SOP can be directly interfaced with the DC1012A-A board available from Linear Technology for performance evaluation

Conclusion SOP is a self-contained platform for the slow controls of the Belle-2 Forward Calorimeter… … yet, it is general enough to be deployed in other sub-detectors. Specific features can be added if needed. First prototypes available by the end June 2014 Basic software (both system & user oriented) presently under development Deployment of FPGAs (Xilinx Artix ?) will be taken into account if needed