Director's Corner

The IDT’s Physics and Detector Working Group after Snowmass

A Director's Corner by Jenny List, new chair of the working group

by Jenny List

The International Development Team has a new member: Jenny List from DESY has taken over the leadership of the Physics and Detector Working Group. In her first Corner, she describes the changing future collider landscape and calls for a readjustment of the priorities and the role of the Physics and Detector community. State-of-the-art technologies and excellent software are essential for any future project, but a sharpened physics case for a Higgs factory is just as essential, she says.


We need to talk: ILD checks performance at other Higgs factory proposals than ILC

New detector concept strategy identifies work programme for the near future

by Barbara Warmbein

One thing is pretty certain: the next big machine in particle physics is most likely going to be an electron-positron “Higgs factory” collider. What is not so certain is which of the different collider options currently being considered will be realised. The ILD collaboration, creator of one of the two detector concepts for the International Linear Collider (ILC), is now checking how ILD would perform at different colliders than ILC, and is deepening collaborations with these collider concepts. ILD released its strategy in September.

Around the World

Sakue Yamada received Japanese Order of Merit

Congratulations to Sakue Yamada, the ILC's former Research Director, who was decorated by the Japanese government for outstanding achievement in scientific research.

In the News

  • from CERN Courier
    7 November

    In the energy frontier, a global consensus for an e+e– Higgs factory as the next collider has been reaffirmed. While some options (e.g. the International Linear Collider) have mature designs, other options (such as FCC-ee, C3, HELEN and CLIC) require further R&D to understand if they are viable.

  • from nature
    3 November 2022

    Patrick Janot at CERN and Alain Blondel, a particle physicist at the University of Geneva, used published details of five leading ‘Higgs factory’ designs to calculate the energy consumption per Higgs boson for each. As well as the FCC and China’s proposed Circular Electron Positron Collider (CEPC), they looked at three proposals for linear colliders: a long-planned International Linear Collider (ILC) in Japan, CERN’s own Compact Linear Collider (CLIC) and the Cool Copper Collider (C3), a compact US-based accelerator.

  • from Iwate Nippo
    3 November


  • from NDR
    3 November

    Dort entdeckten Forscher im Jahr 2012 das lang gesuchte Higgs-Teilchen. Auch an dem Zukunftsprojekt International Linear Collider ILC , einem Linearbeschleuniger, der unter anderem das Higgs-Teilchen näher untersuchen soll, arbeitet das DESY mit. Allerdings steht die endgültige Entscheidung, ob dieses Projekt verwirklicht wird, derzeit noch aus.

  • from AIP
    28 September

    The most technically ready design is the International Linear Collider (ILC), which would start at 250 gigaelectronvolts and could be extended to one teraelectronvolt. The project has been in limbo for years, with Japan as host waiting for financial commitments from international partners, and potential partners — including the U.S. — waiting for Japan to proceed with the project.

  • from Astronomy
    25 October

    This Higgs machine would be a linear collider around 20 kilometers in length. There’s an ongoing debate about which country might have the resources to host it

  • from Nikkei
    18 October


  • from Iwate Nippo
    14 October


  • from Physics
    6 October

    But an outsider might wonder why another Higgs-factory proposal is being added to the particle-physics menu. A similar factory design—the International Linear Collider (ILC)—has been in the works for years, but that project is presently stalled, as the Japanese government has not yet confirmed its support for building the facility in Japan. Waiting in the wings are several other large particle-physics proposals, including CERN’s Future Circular Collider and China’s Circular Electron Positron Collider.

  • from Physics Today
    October 2022

    The most technically ready design is the International Linear Collider (ILC), which would start at 250 GeV and could be extended to 1 TeV. The project has been in limbo for years, with Japan as host waiting for financial commitments from international partners, and potential partners—including the US—waiting for Japan to proceed with the project

  • from Physics World
    13 September

    There are currently five proposals for a high-energy positron–electron collider, with the International Linear Collider (ILC) in Japan, the Cool Copper Collider (C3) in the US and the Compact Linear Collider at CERN all based on linear accelerators. The FCC and the China Electron Positron Collider (CEPC) in China, meanwhile, are circular colliders.

  • from Kopalnia Wiedzy
    14 September

    Międzynarodowa społeczność fizyków zastanawia się obecnie nad budową trzech akceleratorów liniowych – International Linear Collider (ILC) w Japonii, Cool Copper Collider (C3) w USA oraz Compact Linear Collider w CERN – i dwóch kołowych – FCC i China Electron Positron Collider (CEPC) w Chinach. Naukowcy podają argumenty za konkretnymi rozwiązaniami, a Janot i Blondel postulują, by “w przyszłych projektach z dziedziny fizyki wysokich energii uwzględniać nie tylko koszt i wydajność akceleratora, ale również jego ślad węglowy na każdy uzyskany wynik naukowy”, stwierdzają naukowcy.

  • from Scientific American
    8 September

    The nearest-term possibility for such a Higgs factory is the International Linear Collider, which would be built in Japan. Though it is shovel-ready, the project has been delayed for years, and in February it was dealt another, possibly fatal blow when the Japanese government refused to allow it to go forward.

  • from Stony Brook Univ. News
    7 September

    From 2005 to 2013 Barish was director of the Global Design Effort of the International Linear Collider (ILC), a proposed 31-kilometer- (19-mile-) long linear particle accelerator. The ILC is the highest priority future project for particle physics worldwide.

  • from Iwate Nippo
    31 August


  • from Prospect
    29 August

    Meanwhile, some researchers hope that plans for a large international project, the International Linear Collider (ILC), spearheaded by physicists in Japan, might also go forward. Rather than moving in circles, the particles in the ILC (electrons and positrons) would be accelerated in a straight line along two 20km accelerators before being smashed together. “The ILC technology is now ready and proven,” says Suzie Sheehy, an accelerator physicist at the Universities of Oxford and Melbourne.

  • from NHK
    16 August