Instrumentation and control standardization in the ITER project

Journeaux, Jean-Yves; Joonekindt, D.; Klotz, W.-D.; Makijarvi, P.; Wallander, Anders; Yonekawa, I.

doi:10.1016/j.fusengdes.2010.12.014

Cited by 22 publications

(7 citation statements)

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“…Since more than 60 % of value of the ITER project is driven by in-kind procurements from seven parties, the priority of the ITER central control group has been to establish the standards and technologies affecting the plant system I&C as well as reducing risks in future integration. This point is already presented in many occasions [1,2].…”

Section: Introductionmentioning

confidence: 55%

ITER Instrumentation and Control System towards Long Pulse Operation

Yonekawa¹,

Fernandez²,

Fourneron³

et al. 2012

Plasma and Fusion Research

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ITER is a long-pulse tokamak with elongated plasma. The nominal inductive operation produces a D-T fusion power of 500 MW for a burn length of 300-500 s, with the injection of 50 MW of auxiliary power. With non-inductive current drive from the H&CD systems, the burn duration is envisaged to be extended to 3000 s.The term ITER Instrumentation & Control (I&C) includes everything required to operate the ITER facility. It comprises three vertical tiers; conventional control, interlock system and safety system, and two horizontal layers; central I&C systems and plant system I&C. CODAC (Control, Data Access and Communication) system forms the upper level of the hierarchy, and is the conventional central control system of ITER architecture. CODAC system is responsible for integrating all plant system I&C and enable operation of ITER as a single integrated plant. CODAC system provides overall plant systems coordination, supervision, plant status monitoring, alarm handling, data archiving, plant visualization (HMI) and remote experiment functions. CIS (Central Interlock System) and CSS (Central Safety System) also form the upper level of the hierarchy to supervising and integrating all plant system interlock and safety functions. Plant system I&C forms the lower level of the hierarchy, and provide dedicated plant data acquisition, plant status monitoring, plant control and plant protection functions to perform individual plant system operation under the supervision of central I&C systems.

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Section: Introductionmentioning

confidence: 55%

ITER Instrumentation and Control System towards Long Pulse Operation

Yonekawa¹,

Fernandez²,

Fourneron³

et al. 2012

Plasma and Fusion Research

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“…The shelf backplane provides several network topologies with possible redundancy schemes to be configured on the specified ATCA interfaces [6]. Logical slot numbers 1 and 2 are hub-dedicated slots, while the remaining (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14) are node slots.…”

Section: Canddaq Overviewmentioning

confidence: 99%

“…Connection to the ITER Control, Data Access and Communication (CODAC) central system requires timing signals to be synchronized with a Grand Master Clock (GMC), distributed by ITER's Timing Communication Network (TCN), through IEEE 1588-2008 Precision Time Protocol (PTP) [3], with a precision of 50 ns RMS [4]. This paper briefly presents the developed C&DAQ architecture, following a description of the PTP and time stamping mechanism and how the hardware upgrade engineering solutions implement timing and synchronization distribution, achieving compliancy with ITER TCN.…”

Section: Introductionmentioning

confidence: 99%

Precision Time Protocol support hardware for ATCA control and data acquisition system

Correia

Sousa

Carvalho

et al. 2015

Fusion Engineering and Design

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h i g h l i g h t s• ATCA based control and data acquisition subsystem has been developed at IPFN.• PTP and time stamping were implemented with VHDL and PTP daemon (PTPd) codes.• The RTM (. . .) provides PTP synchronization with an external GMC.• The main advantage is that timestamps are generated closer to the Physical Layer at the GMII.• IPFN's upgrade consistently exhibited jitter values below 25 ns RMS. a r t i c l e i n f o . The TCN infrastructure was tested for an RMS jitter under the limit of 50 ns. Therefore, IPFN's hardware, namely the ATCA-PTSW-AMC4 hub-module, which is in charge of timing and synchronization distribution for all subsystem endpoints, shall also perform within this jitter limit. This paper describes a relevant upgrade, applied to the ATCA-PTSW-AMC4 hardware, to comply with these requirements -in particular, the integration of an add-on module "RMC-TMG-1588" on its Rear Transition Module (RTM). This add-on is based on a commercial FPGA-based module from Trenz Electronic, using the ZHAW "PTP VHDL code for timestamping unit and clock", which features clock offset and drift correction and hardware-assisted time stamping. The main advantage is that timestamps are generated closer to the Physical Layer, at the Gigabit Ethernet Media Independent Interface (GMII), avoiding the timing uncertainties accumulated through the upper layers. PTP code and user software run in a MicroBlaze TM soft-core CPU with Linux in the same FPGA, adding programmability and quick implementation of the desired features and upgrades. The paper briefly presents an overview of the ATCA C&DAQ, presenting the PTP and time stamping solution and how it was hardware-implemented, resulting in the RMC-TMG-1588 module. Finally it will describe the synchronization performance tests and results obtained at ITER site as well as indicating further developments to the system, in order to fulfil ITER's requirements.

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“…This ITER RH system needs to operate safely, effectively, and with high availability over a minimum period of 25 years. These requirements are global for the ITER project, and the CODAC section have developed the Plant Control Design Handbook (PCDH) [2] to address the operation and maintenance of I&C systems on the project. However, the PCDH was developed with its main focus on I&C for the ITER machine operations, and it does not completely satisfy the requirements of the RH control system which engages in ITER machine maintenance.…”

Section: Scopementioning

confidence: 99%