dorsal/arxiv
View SchemaFirst comments on a descoped/staged FCC-ee
| Authors | Alain Blondel, Christophe Grojean, Patrick Janot, Guy Wilkinson |
|---|---|
| Categories | |
| ArXiv ID | 2601.05283vv1 |
| URL | https://arxiv.org/abs/2601.05283 |
| License | http://creativecommons.org/licenses/by/4.0/ |
Abstract
In response to its remit, the European Strategy Group (ESG) recommended the electron-positron Future Circular Collider (FCC-ee) as the preferred option for the next flagship collider at CERN; and a descoped FCC-ee as the preferred alternative option (with reduced synchrotron radiation (SR) power, without a run at the $\rm t \bar t$ threshold, and with only two interaction regions) in the event that the preferred option turns out not to be feasible. Upon request of the ESG, a basic comparison of the physics potential of the descoped option with that of the baseline version is presented in this short note. Our first observations about the alternative proposal of a descoped FCC-ee are that (i) the same performance as the baseline, apart from $\rm t \bar t$-run related, is achieved with the longer proposed period of operation; and (ii) the top run remains essential, but can be staged at a later date. The full appraisal of the consequences of descoping and a proposal for the best way to integrate possible staging wherever feasible, and possible improvements, will need further joint studies by the physics and accelerator groups.
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"abstract": "In response to its remit, the European Strategy Group (ESG) recommended the electron-positron Future Circular Collider (FCC-ee) as the preferred option for the next flagship collider at CERN; and a descoped FCC-ee as the preferred alternative option (with reduced synchrotron radiation (SR) power, without a run at the $\\rm t \\bar t$ threshold, and with only two interaction regions) in the event that the preferred option turns out not to be feasible. Upon request of the ESG, a basic comparison of the physics potential of the descoped option with that of the baseline version is presented in this short note. Our first observations about the alternative proposal of a descoped FCC-ee are that (i) the same performance as the baseline, apart from $\\rm t \\bar t$-run related, is achieved with the longer proposed period of operation; and (ii) the top run remains essential, but can be staged at a later date. The full appraisal of the consequences of descoping and a proposal for the best way to integrate possible staging wherever feasible, and possible improvements, will need further joint studies by the physics and accelerator groups.",
"arxiv_id": "2601.05283",
"authors": [
"Alain Blondel",
"Christophe Grojean",
"Patrick Janot",
"Guy Wilkinson"
],
"categories": [
"hep-ex",
"hep-ph",
"physics.acc-ph"
],
"license": "http://creativecommons.org/licenses/by/4.0/",
"title": "First comments on a descoped/staged FCC-ee",
"url": "https://arxiv.org/abs/2601.05283",
"version": "v1"
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