FCC-FS EPOL group and FCCIS WP2.5 meeting 3

Thursday 9 Dec 2021, 16:30 → 18:45 Europe/Zurich

The FCC technical and financial feasibility study comprises a work package (EPOL) on precision determination of the centre of mass energy at FCCee. using resonant depolarisation of the beams, in conjunction with precise measurement of the energy spread and other parameters using physics events in the detectors, and other beam diagnostics in particular to control the collision parameters. Specific equipment involves polarimeters for both beams, polarisation wigglers, and depolarising RF kickers. The possible mono-chromatization of the beams in view of a measurement of the e+ e- —> H (125) process will also be studied and special requirements investigated. 

Short group meetings are foreseen at 16:30 on Thursday typically every two weeks. 

16:30 → 16:40 Welcome, Introduction

Speakers: Alain Blondel (Universite de Geneve (CH)), Jorg Wenninger (CERN)

16:40 → 16:50 RF locations, CM energies and boosts

Speaker: Jacqueline Keintzel (CERN)

20211209_Keintzel_EPOL_FCCee_MADXComp.pdf

16:50 → 17:10 The FCC-ee polarimeters: design and rates

Speaker: Nickolai Muchnoi (Budker INP)

EPOL.pdf

17:10 → 17:30 Laser possibilities for the FCC-ee polarimeter

Speaker: Aurelien Martens (IJClab Orsay)

FCCee_06122021_lasers.pdf

FCCee_06122021_lasers.pptx

17:30 → 17:40 First look at monochromatization optics

Speaker: Angeles Faus-Golfe (IJClab IN2P3 CNRS-Université Paris-Saclay (FR))

17:40 → 17:45 a brief status of simulation studies at EPFL

Speakers: Tatiana Pieloni (EPF Lausanne), Yi Wu (EPFL)

18:05 → 18:10 Actions, agenda for next meetings