Journal of the Particle Accelerator Society of Japan
Online ISSN : 2436-1488
Print ISSN : 1349-3833
Volume 14, Issue 4
International Linear Collider (ILC) —Overview
Displaying 1-13 of 13 articles from this issue
Preface
Special Issue "International Linear Collider, a New Framework of Scientific Project"
  • Lyn EVANS, Shinichiro MICHIZONO, Akira YAMAMOTO
    2018 Volume 14 Issue 4 Pages 194-200
    Published: January 31, 2018
    Released on J-STAGE: December 02, 2022
    JOURNAL FREE ACCESS

    The International Linear Collider (ILC) is proposed as an energy frontier electron-positron colliding accelerator, started with a center-of-mass beam collision energy of 250 GeV, as “Higgs factory”. The ILC accelerator design and the preparation for construction are discussed. The core technologies of Radio Frequency superconductivity and production and manipulation of extremely low emittance beams (nano-beam) are presented. The plan for the energy-staging at the center-of-mass energy starting with 250 GeV and future prospects are discussed. The ILC will allow the properties of the Higgs boson to be measured with unprecedented precision, and will provide possible discovery of new particles beyond the standard model with the energy extendability as a natural feature of the linear accelerator.

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  • Masao KURIKI
    2018 Volume 14 Issue 4 Pages 201-207
    Published: January 31, 2018
    Released on J-STAGE: December 02, 2022
    JOURNAL FREE ACCESS

    ILC (International Linear Collider) is an electron positron collider which is promoted by an international collaboration and is planned to build in Japan. In this article, social significance of an international scientific project in a large scale is discussed. We found that the scientific project produces new knowledge and human resource which are indispensable to maintain the social development. As political functions, it contributes to stabilize the international relation among nations which is one of the most important and urgent issue in the modern world.

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  • Keisuke FUJII
    2018 Volume 14 Issue 4 Pages 208-214
    Published: January 31, 2018
    Released on J-STAGE: December 02, 2022
    JOURNAL FREE ACCESS

    The ILC is the first energy frontier collider project that was envisioned jointly by the world high energy physics community to be a truly global project, unlike its predecessors hosted by some existing laboratory. The machine is envisaged to be constructed mustering human and material resources from over the world. As such, the ILC project is expected to face new organizational challenges. In this article, possible approaches to workable project implementation are reviewed.

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  • Tohru TAKAHASHI
    2018 Volume 14 Issue 4 Pages 215-219
    Published: January 31, 2018
    Released on J-STAGE: December 02, 2022
    JOURNAL FREE ACCESS

    We discuss social impacts of large scientific projects such as the International Linear Collider (ILC). Since the subject covers a wide range of issues and it is difficult to cover all of them, we discuss a part economic and cultural aspect in this article. Even through the ILC have not gotten “go” signal from funding agencies, it already has years of history in collaborative works in academia, industry and public. The impacts are not the issues in the future, but are on-going issues to be discussed. It is also to be kept in mind that the impacts are not one way issues from the projects to the societies and mutual communications are a key to successful realization of the project.

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  • Takayuki SAEKI
    2018 Volume 14 Issue 4 Pages 220-226
    Published: January 31, 2018
    Released on J-STAGE: December 02, 2022
    JOURNAL FREE ACCESS

    The design of International Linear Collider (ILC) is based on the Superconducting RF (SRF) technology, which is more efficient than the normal conducting technology in terms of the energy consumption. However, still the total energy consumption of ILC (500 GeV) is 164 MW, which is much larger than those of existing accelerators in the world. In such a situation, the reduction of energy consumption in ILC, thus the efficient and sustainable design of ILC, is the crucial issue to realize it in the near future in a Japanese site. In order to challenge the issue, we organized a working group, so called “Green-ILC WG” in the Advanced Accelerator Association (AAA) in Japan, which involves 112 companies from industry and 42 organizations from academia. The Green-ILC WG is also collaborating with the international team of ILC. The activities are covering the studies on the efficient design of components, accelerator sub-systems, ILC-system, and even ILC-city. This presentation will report the current status of these studies.

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  • Eisuke TADA
    2018 Volume 14 Issue 4 Pages 227-235
    Published: January 31, 2018
    Released on J-STAGE: December 02, 2022
    JOURNAL FREE ACCESS

    The ITER project 1, 2) was established in November 2006 by the ITER Agreement involving seven Members (China, the European Union including Switzerland, India, Japan, Korea, the Russian Federation and the United States of America). ITER is a critical step in the development of fusion energy: its role is to confirm the feasibility of exploiting magnetic confinement fusion for the production of energy for peaceful purposes by providing an integrated demonstration of the physics and technology required for a fusion power plant. At the core of the facility, the ITER tokamak will confine a plasma heated to temperatures in the region of 1–2×108 K, in which deuterium-tritium fusion reactions will produce up to 500 MW of fusion power for periods ranging from several hundred to several thousand seconds. Extensive progress has been made in the on-site construction, the production of components for the ITER tokamak, plant and auxiliary systems, and in the preparations for on-site installation. Recently, a major update of the ITER baseline schedule and resource estimate has been undertaken. The revised schedule foresees an earliest technically achievable date for First Plasma of December 2025 and a target date for the transition to D/DT operation of late 2035. This report outlines the ITER project management and recent progress of tokamak components manufacturing and on-site construction activities of the ITER facility.

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