Proposals and LOIs Approved at the October 27-28, 2025 ATLAS PAC Meeting

Requested beam time

The ATLAS Program Advisory Committee (PAC) met on October 27-28, 2025. A total of 72 proposals and letters of intent requesting 481 days of facility time were evaluated. The considerations of the committee were based on their assessment of the scientific importance of the proposed research, its technical feasibility, and its reliance on aspects of the ATLAS facility that are unique.

Types of approval

Because of the large number of high-quality proposals and the constraints on beam time, the PAC is asked to recommend beam time allocation in two categories:
Priority I: used for experiments that must be run at all costs
Priority II: used for experiments that should be run if possible. The time allocated for Priority-II experiments is valid for 2 years, starting from the date of the PAC meeting when it was approved. If Priority-II experiments cannot be scheduled before the approved time expires the corresponding proposals will have to be resubmitted.

PAC meeting outcome

Below is a table with the proposals approved by the ATLAS director based on the recommendations of the PAC. The last two columns indicate the number of days approved. Priority-II days expire on October 27th, 2027.