宇宙誕生の謎を探る次世代大型加速器に関する米政府諮問委員長を務める、村山斉・米カリフォルニア大バークリー校教授は１日、盛岡市内で講演し、日本に国際リニアコライダー（ＩＬＣ）ができるとはっきりすれば「米国は必ず乗ってくる」と述べ、誘致すれば米側の協力が期待できると強調した。(Sure, here is the English translation:
宇宙誕生の謎を探る次世代大型加速器に関する米政府諮問委員長を務める、村山斉・米カリフォルニア大バークリー校教授は１日、盛岡市内で講演し、日本に国際リニアコライダー（ＩＬＣ）ができるとはっきりすれば「米国は必ず乗ってくる」と述べ、誘致すれば米側の協力が期待できると強調した。(On the 1st July, Professor Hitoshi Murayama of the University of California, Berkeley, who serves as the chairman of a U.S. government advisory committee on the next-generation large accelerator exploring the mysteries of the universe’s birth, gave a lecture in Morioka City. He emphasized that if it becomes clear that the International Linear Collider (ILC) will be built in Japan, ‘the United States will definitely join,’ highlighting that attracting the ILC would ensure cooperation from the U.S. side.)

日本で建設が計画されている巨大加速器「国際リニアコライダー（ILC）」の誘致を産学官民でめざす岩手県ILC推進協議会は1日、盛岡市で公開講演会を開いた。世界的な物理学者、村山斉・米カリフォルニア大学教授は「地球を外から見る視点が大事」とプロジェクトの意義や現状を解説した。(Sure, here is the English translation:

“On the 1st, the Iwate Prefecture ILC Promotion Council, which aims to attract the planned construction of the giant accelerator, the International Linear Collider (ILC), to Japan through industry-academia-government collaboration, held a public lecture in Morioka City. Renowned physicist Professor Hitoshi Murayama from the University of California explained the significance and current status of the project, emphasizing that ‘it is important to have a perspective of looking at the Earth from the outside.'”)

村山教授は、ILCが宇宙や物質の誕生に関わる研究施設として期待されていると説明しました。「科学というのは人類共通のもので、世界から本当にたくさんの人が集まってくる。世界で共通するものを日本でできたらすばらしいなと思う」（Sure, here is the English translation:

“Professor Murayama explained that the ILC is expected to be a research facility involved in the study of the origins of the universe and matter. ‘Science is something that belongs to all of humanity, and a great many people from around the world will gather here. I think it would be wonderful if we could have something of global significance in Japan.'”)

県議会の6月定例会は27日から一般質問が始まりました。
達増知事は次世代の大型実験施設、ILC＝国際リニアコライダーの誘致は今年度から来年度が山場だとして、全力で国に働きかけていくと述べました。（Sure, here is the English translation:

“The June regular session of the Prefectural Assembly began on the 27th with general questioning. Governor Tasso stated that the effort to attract the next-generation large experimental facility, the ILC (International Linear Collider), will reach a crucial point from this fiscal year to the next, and he expressed his commitment to lobbying the national government with full effort.”）

岩手、宮城両県境にまたがる北上山地が建設候補地の超大型加速器「国際リニアコライダー（ＩＬＣ）」の誘致を目指す東北ＩＬＣ推進協議会は１４日、仙台市で総会を開き、２０２４年度の事業計画を承認した。(Sure, here is the English translation:

“On the 14th, the Tohoku ILC Promotion Council, which aims to attract the International Linear Collider (ILC) to the Kitakami Mountains spanning Iwate and Miyagi prefectures, held a general meeting in Sendai City and approved the business plan for fiscal year 2024.”)

東北ＩＬＣ推進協議会は１４日、仙台市内で本年度の総会を開いた。国際リニアコライダー（ＩＬＣ）の誘致実現に向け、日本政府に国の政策と位置付けて推進することや高性能加速器開発への十分な予算措置を求める決議を採択した。(Sure, here is the English translation:

“On the 14th, the Tohoku ILC Promotion Council held its annual general meeting in Sendai City. To realize the attraction of the International Linear Collider (ILC), the council adopted a resolution urging the Japanese government to promote the project as a national policy and to secure sufficient budgetary measures for the development of high-performance accelerators.”)

But some researchers argue that a circular collider is not the only option for a Higgs factory, and that a linear collider could have some advantages — including lower energy consumption and possibly lower construction and running costs.

ＩＬＣ整備については、日本側と海外との間で経費負担や運営、意思決定などに意見の隔たりがあるとし「認識に差があったことを各国に共有してもらい、日本の考え方を説明する。ＩＬＣテクノロジーネットワークを使って計画の理解を進めている」と強調した。(Sure, here is the English translation:

“Regarding the development of the ILC, there are differences in opinions between Japan and other countries on cost sharing, operations, and decision-making. ‘We will share the differing perspectives with each country and explain Japan’s standpoint. We are advancing understanding of the project using the ILC Technology Network,’ he emphasized.”)

Other accelerator facilities that use superfluid cooling include the Thomas Jefferson Laboratory in the US and the European X-ray Free Electron Laser in Germany. A future International Linear Collider – a possible successor to the LHC – would also employ superfluid-cooled SRFs.

A ramp-up of R&D for future accelerators also featured high on the priority list, followed by coordination with a potential International Linear Collider and participation in a global neutrino programme.

内閣府と文部科学省は、担当部局で構成する「将来の高性能加速器に関する連絡会」を設置し、国際リニアコライダー（ILC）などの情報共有を進めている。研究者や関係省庁の検討状況を把握する目的。ILCの東北誘致が正念場を迎える中、取り組みの推進が期待される。(Sure, here is the English translation:

“The Cabinet Office and the Ministry of Education, Culture, Sports, Science and Technology have established a ‘Liaison Council for Future High-Performance Accelerators,’ composed of relevant departments, to facilitate information sharing about projects such as the International Linear Collider (ILC). The purpose is to understand the status of deliberations by researchers and related ministries. As efforts to attract the ILC to the Tohoku region reach a critical stage, the promotion of these initiatives is highly anticipated.”)

宇宙の謎に迫る大型加速器「国際リニアコライダー（ILC）」の誘致を目指す岩手県は22日、ILC推進本部会議を開いた。誘致をめぐっては2025年が一つのメドになるとの見方があり、県は日本政府に前向きな判断を促すとともに国民にILCの重要性を啓発して機運を高めたい考えだ。(Sure, here is the English translation:

“On the 22nd, Iwate Prefecture held a meeting of the ILC Promotion Headquarters to discuss efforts to attract the large accelerator, the International Linear Collider (ILC), which aims to uncover the mysteries of the universe. There is a view that 2025 will be a significant milestone for the attraction efforts. The prefecture aims to encourage the Japanese government to make a positive decision while also raising public awareness about the importance of the ILC to build momentum.”)

With the workshop being held in Japan, the proposed International Linear Collider (ILC) figured prominently as a reference project – attracting considerable attention from local media.

One is devoted to the International Linear Collider (ILC). For more than two decades, ICFA has promoted the realisation of the ILC, for which a global design effort was put in place in 2005.

In Europe, the 2020 update of the European strategy for particle physics concluded that a Higgs factory is the highest priority, while the US Snowmass 2021 community study and subsequent P5 report released in December 2023 also stressed the importance of overseas Higgs factories. CEPC scientists have actively contributed to both exercises. Meanwhile in Japan, which proposed to host an International Linear Collider (ILC) Higgs factory in 2012, a new baseline design to start at a collision energy of 250 GeV instead of 500 GeV was presented in 2017.

It could be built after or in tandem with one of the committee’s top priorities for the near-term future: a collider designed for the in-depth study of the Higgs boson, such as the proposed Future Circular Collider at CERN or the proposed International Linear Collider in Japan. It would use technology so cutting-edge that it currently does not exist.