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High Energy Physics - Experiment
Title: Uncertainties from metrology in the integrated luminosity measurement with the updated design of a detector at CEPC
(Submitted on 29 Apr 2024 (v1), last revised 6 May 2024 (this version, v2))
Abstract: In order to measure integrated luminosity with a required precision of $10^{-4}$ at the $Z^0$ pole, proposed CEPC $e^{+}e^{-}$ collider requires a luminometer, a specially designed calorimeter placed in the very forward region to identify Bhabha scattering at low polar angles. Usually, such a device is placed at the outgoing beams, to keep the spatial symmetries of the head-on collisions at accelerators with a non-zero crossing angle. At CEPC it is currently proposed to place the luminometer on the z-axis. We review a feasibility of a measurement of the integrated luminosity at the $Z^{0}$ pole with the required precision, concerning the luminometer centered around the z-axis and the post-CDR beam properties.
Submission history
From: Ivan Smiljanic [view email][v1] Mon, 29 Apr 2024 11:19:48 GMT (2629kb,D)
[v2] Mon, 6 May 2024 20:09:03 GMT (2629kb,D)
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