Abstract
Optics-measurement-based beam position monitor calibrations in the LHC insertion regions
Highlights
Linear optics measurements and corrections are key elements in the operation of present and future colliders such as LHC [1,2,3,4], its upgrades HL-LHC [5], HE-LHC [6], or the FCC [7,8]
The requirements of increasing the luminosity move the LHC into more challenging operational regimes with lower βÃ
Optics corrections are based on the analysis of turn-by-turn measurements from the beam position monitors (BPMs) [11,12,13,14] and K-modulation [15,16,17,18]
Summary
Linear optics measurements and corrections are key elements in the operation of present and future colliders such as LHC [1,2,3,4], its upgrades HL-LHC [5], HE-LHC [6], or the FCC [7,8]. The requirements of increasing the luminosity move the LHC into more challenging operational regimes with lower βÃ. In the LHC strong localized magnetic errors have to be corrected to achieve the design value of the β function at the interaction point to provide the design luminosity within the 5% tolerance limits to the experiments: ATLAS [9] and CMS [10]. BPM calibration errors modify measured position by the calibration factor Ci, where i is the BPM number. This is analytically described by: zmi eas 1⁄4 Ciztirue; ð1Þ where ztirue represents the true horizontal or vertical beam position at the ith BPM and zmi eas is the reported measurement
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
