Muon Collider ESPPU Kickoff Meeting

2nd October 2024

Attendees: D. Schulte, D. Neuffer, A. Lehner, A. Grudiev, A. Apresyan, C. Desponds, D. Zulani, D. Luccesi, E. Mactavish, E. Guanfelice, Emilio, F. Meloni, S. Berg, J. Osborne, K. diPetrillo, K. Pedro, L. Sestini, M. Carasa, N. Pastrone, N. Craig, Nicolas, P. Borges de Sousa, P. Meade, A. Wulzer, D. Marzocca, R. Losito, R. Taylor, S. Belometnykh, S. Jindarini, S. Johannesson, S. Gourlay, T. Luo, U. van Reinen, V. Morozov, Y. Robert

Interim Report 2024 (ArXiv): https://arxiv.org/abs/2407.12450

ESPPU Accelerator Roadmap 2022 (Muon Collider pg 145):  https://arxiv.org/abs/2201.07895

ESPPU Overleaf editing access: https://www.overleaf.com/3781273291qffchfrfbbwz#c64fce

Key Points:

• Daniel Schulte (DS) went over presentation:
  • Long report deadline is end of March 2025
  • End of October: Key messages for the different parts so that we can look at what needs to be modified and changed, particularly for the R&D plan and cost. Establish the deliverables and harmonise.
  • End of December: Key content complete.
  • End of January: Ready for copy editing

Scott Berg: Section leads for when there are multiple authors should be established.
DS: Will let the authors confer and decide who is responsible.

Alexej Grudiev (AG): Similar to Interim Report? What is the difference between the Technologies and the R&D sections.
DS: Evaluation Report describes the RF and the status and what has been achieved. Showing speed of progress is important. R&D states objectives to achieve in the next 5 - 10 years.
AG: E.g. RF for 6D Cooling goes where?
DS: Accelerator concept explains how things go together. So it goes in the Technology section of the Evaluation Report.
AG: Should we start from copying the Interim Report?
DS: Some people would like to start from scratch. So you are welcome to take it from the Interim Report as a basis.

Federico Meloni: Organisation point - Tight timescale. One of the To Do items is to identify a lead for when there are multiple names. Should be done before the next meeting.

Kevin Pedro: Can we have links to the roadmaps and other reports. I.e. Interim report and last year's roadmap.
RT: Will include these in the minutes, along with the editing link of the overleaf.

Sergo: Will Daniel coordinate page numbers for each sections? Rough guidance on 5, 10, 20 pages.
DS: Interim report was 4 pages per section. R&D programme should be a page or two per technology. Descriptions should be similar in length to the Interim Report.
RT: Will put in approximate page numbers in the Overleaf and run it past Daniel then the others for the next meeting.

Discussion on the cost modelling and the luminosity and energy scaling.

Andrea: Mention of a small muon collider for t-tbar fusion. Unlike FCC.
DS: Cooling is expensive enough that as a standalone project this may not make sense. Lets see if it is worth spending it for this one measurement.
Sergo: Muon Collider is to get to highest energy in shortest possible terms. We considered this in P5. Not too much emphasis on this.

Zoom chat:

AL: Any possibility to compile chapters separately in the overleaf, like in the Interim Report?
RT: Added compile.tex files in the Overleaf for each chapter to do this.