Optimizing ILD Strategy for Future Collider Options
In the recent discussions regarding the ILD strategy, two main options have emerged - one focusing on joining FCC-ee for detector development and the other exploring ILD's role in different collider settings. There is no clear consensus yet, with regional preferences influencing decision-making. This proposal suggests ILD reinventing itself as a particle flow detector for an electroweak factory, maintaining a strong lineage from the ILC while remaining open to other collider options. The plan includes developing a model for ILD at FCC-ee, formulating a research program for the next 2 years, and engaging in R&D for detector technologies across various collider options.
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Presentation Transcript
ILD strategy Status of our last discussion: Option 1: 1.Join FCC-ee specifically as a new concept (ILD4FCC for example) and develop an integrated concept of a detector at the FCC-ee 2.This option or a version of this could also mean that we join forces with CLD and form a new concept at the FCC-ee Option 2: 1.ILD remains primarily a concept for the ILC or more generally linear colliders, but opens up to circular colliders in a way that we contribute in a coordinated fashion with studies and work towards understanding what would be needed / would be best for a detector at a circular collider. There were clear advocates for either position, and we did not yet reach a consensus on which direction we would want to adopt. 29.6.2022 1
Feedback I have received since our meeting received input from a number of ILD members No clear picture, both options have supporters There is a clear regional distribution: Option 1 has mostly European supporters 29.6.2022 2
Boundary conditions The European Strategy clearly supports a Higgs factory as a future project No favor to a particular collider no option is given up The ongoing ECFA study is collider blind The US snowmass process is not limited to a particular collider option, all options are on the table (ILC, ILC@USA, C^3, FCC-ee, ) The Japanese community continues to push for ILC@Japan 29.6.2022 3
My proposal ILD re-invents itself as a particle flow detector for an electroweak factory We have a strong linear collider lineage, and are clearly coming from the ILC. ILC remains our baseline / reference collider We are open towards any other collider option which can deliver the science We engage actively with international studies on the capabilities of different EW factory options. We in particular engage with the currently ongoing ECFA study on Higgs/ Top factories and with the snowmass process in the US A focus of the near future for ILD will be an in-depth study of the capabilities and limitations of ILD at a circular collider, in particular, at FCC-ee 29.6.2022 4
In practical terms: We develop (within the limits of person power) a model for ILD at FCC-ee which can serve as the basis for studies We develop and formulate a research program for the next 2 years which has the goal to develop answers on how ILD will perform at other colliders', in particular, at FCC-ee, and how this will impact the ILD design We engage strongly with the R&D needed to push forward the detector technologies needed for a state-of-the art detector at different collider options. 29.6.2022 5
Questions What are the limits of the TPC in terms of occupancy/ inter train spacing , .. How different should an low energy optimized detector be? How does an optimized forward region look like How strongly does the forward region depend on the accelerator type How does our calorimeter / particle flow approach depend on the accelerator How do we handle in ILD heat? What if power pulsing does not work How do we handle in ILD triggering .. 29.6.2022 6
Next steps Clarify the direction we want to take Collect and formulate a set of scientific questions we think we should work on Document this in a short document and circulate this to all of ILD 29.6.2022 7
