Distributed IO Tier

Project description

Distributed I/O Tier - is the level where electronics modules installed close to a particle accelerator in radiation-exposed or radiation-free areas controlled by the master in the Front-end tier over the fieldbus.
These are usually FPGA-based boards sampling digital and analog inputs, driving outputs and performing various safety critical operations.

Modular and reusable Distributed I/O Tier hardware kit

Project information

Modules

Main Kit:

The DI/OT Main Kit provides the following modules which are essential to the DI/OT system and application-independent:

DI/OT 3U crate
Backplanes and crate mechanics designs; the crate is the same for radiation-free and radiation-exposed areas
RaToPUS
100W AC/DC power supply for radiation tolerant DI/OT crate; an off-the-shelf power supply at higher capacity may be used outside of radiation
MoniMod
General-purpose, small form factor monitoring module for RaToPUS and 1U fan tray in radiation-exposed areas
DI/OT System Board with ZU7
A non-radiation-tolerant crate controller with Zynq Ultrascale MPSoC, White Rabbit support and Low Pin Count FMC
DI/OT Rad-tol System Board with Igloo2
A radiation-tolerant crate controller with Flash-based Igloo2 FPGA
Communication mezzanines
A set of FMC mezzanine boards that support different communication protocols: White Rabbit and Profinet for radiation-free areas, Powerlink and WorldFIP for the radiation-exposed ones
Hydra
Hydra is a radiation-tolerant SoC designed to operate up to 500 Gy TID. It features a RISC-V CPU running at 50 MHz, 96 kB of ROM for code, 64 kB of RAM, two Ethernet NIC with low-latency L2 packet switching, SPI and watchdog. Its first use is in the implementation of a Powerlink node using a stripped-down OpenPowerlink stack.

Peripheral Boards:

The Peripheral Boards are application-specific. The DI/OT kit provides a generic SoC-based FMC-carrier Peripheral Board; the application-specific hardware is placed on the FMC-mezzanine and the software/gateware runs on the carrier SoC.

DI/OT FMC carrier Peripheral Board
DI/OT FMC carrier
DI/OT DIO MCX 16ch
16-channel digital I/O board with MCX front panel connectors and configurable 50Ohm termination
DIOT-FSI-DET-8CH
FSI DIOT Photodetection module 8ch
DI/OT Peripheral Board Loop-back
Simple loop-back/load board for testing DI/OT crates and System Boards.
DI/OT temp-pt100
PT100 temperature sensor interface board, likely based on FMC-Temp-PT100-15ch. Project under evaluation.
Coupling-Loss Induced Quench (CLIQ) Peripheral Board with a set of RTMs
EDA-04234 - CLIQ Peripheral Board
EDA-04281 - RTM Trigger Board
EDA-04289 - RTM ADC 4 channel, 1Msps
EDA-04301 - RTM Charger Control
EDA-04303 - RTM General Controls
(obsolete) DIOT_DIO_16ch_opt_24V
A digital I/O module with sixteen 24 Volt optically isolated inputs and outputs has is also available for the CERN Warm Interlocks System.

Reliability/Dependability Studies

DI/OT Reliability Studies project

Documents

DI/OT System Specification
DI/OT project CERN internal collaborations (CERN access only)
Frequently Asked Questions

Presentations

DI/OT platform: development status and interfaces with CO services (video - CERN access only)
G.Daniluk, E.Gousiou, CERN Technical Meeting, 4 Jun 2020

Papers

Design of a 100W Radiation-Tolerant Power-Factor-Correction Buck AC/DC Converter
paper
Lalit Patnaik, Grzegorz Daniluk, Salvatore Danzeca, PCIM Europe digital days 2020

Low-Cost Modular Platform for Custom Electronics in Radiation-Exposed and Radiation-Free Areas at CERN
paper slides
G.Daniluk, C.Gentsos, E.Gousiou, L.Patnaik, M.Rizzi, Proceedings of ICALEPCS2019, New York, USA

Plans at CERN for electronics and communication in the Distributed I/O Tier
G.Daniluk E.Gousiou, Proceedings of ICALEPCS2017, Barcelona, Spain, ISBN: 9783954501939

Contacts

Greg Daniluk - CERN

Status

Date	Event
2015	Start of the project at CERN as collaboration to design generic hardware platform for accelerator equipment
2017	DI/OT becomes official work package of HL-LHC project
10-01-20	Created FAQ
01-05-20	First version of crate mechanics and backplanes design finalized, awaiting the prototypes
11-09-20	Non-radiation-tolerant System Board design finalized, awaiting the prototypes
03-12-20	First prototypes of DI/OT crate and backplanes received!
31-03-21	First prototypes of Non-rad-tol System Board received

Files

DIOT_kit_scaled.png

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