| Paper | Title | Page |
|---|---|---|
| MOPPC101 | The Control Architecture of Large Scientific Facilities: ITER and LHC lessons for IFMIF | 344 |
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| The development of an intense source of neutrons with the spectrum of DT fusion reactions is indispensable to qualify suitable materials for the First Wall of the nuclear vessel in fusion power plants. The FW, overlap of different layers, is essential in future reactors; they will convert the 14 MeV of neutrons to thermal energy and generate T to feed the DT reactions. IFMIF will reproduce those irradiation conditions with two parallel 40 MeV CW deuteron Linacs, at 2x125 mA beam current, colliding on a 25 mm thick Li screen flowing at 15 m/s and producing a n flux of 1018 m2/s in 500 cm3 volume with a broad peak energy at 14 MeV. The design of the control architecture of a large scientific facility is dependent on the particularities of the processes in place or the volume of data generated; but it is also tied to project management issues. LHC and ITER are two complex facilities, with ~106 process variables, with different control systems strategies, from the modular approach of CODAC, to the more integrated implementation of CERN Technical Network. This paper analyzes both solutions, and extracts conclusions that shall be applied to the future control architecture of IFMIF. | ||
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Poster MOPPC101 [0.297 MB] | |
TUCOAAB03 |
Approaching the Final Design of ITER Control System | 490 |
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| The control system of ITER (CODAC) is subject to a final design review early 2014, with a second final design review covering high-level applications scheduled for 2015. The system architecture has been established and all plant systems required for first plasma have been identified. Interfaces are being detailed, which is a key activity to prepare for integration. A built to print design of the network infrastructure covering the full site is in place and installation is expected to start next year. The common software deployed in the local plant systems as well as the central system, called CODAC Core System and based on EPICS, has reached maturity providing most of the required functions. It is currently used by 55 organizations throughout the world involved in the development of plant systems and ITER controls. The first plant systems are expected to arrive on site in 2015 starting a five-year integration phase to prepare for first plasma operation. In this paper, we report on the progress made on ITER control system over the last two years and outline the plans and strategies allowing us to integrate hundreds of plant systems procured in-kind by the seven ITER members. | ||
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Slides TUCOAAB03 [5.294 MB] | |
TUCOCA02 |
The ITER Interlock System | 910 |
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| ITER is formed by systems which shall be pushed to their performance limits in order to successfully achieve the scientific goals. The scientists in charge of exploiting the tokamak will require enough operational flexibility to explore as many plasma scenarios as possible while being sure that the integrity of the machine and safety of the environment and personnel are not compromised. The I&C Systems of ITER has been divided in three separate tiers: the conventional I&C, the safety system and the interlock system. This paper focuses on the latter. The design of the ITER interlocks has to take into account the intrinsic diversity of ITER systems, which implies a diversity of risks to be mitigated and hence the impossibility to implement a unique solution for the whole machine. This paper presents the chosen interlock solutions based on PLC, FPGA, and hardwired technologies. It also describes how experience from existing tokamaks has been applied to the design of the ITER interlocks, as well as the ITER particularities that have forced the designers to evaluate some technical choices which historically have been considered as non-suitable for implementing interlock functions. | ||
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Slides TUCOCA02 [3.303 MB] | |