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TY - CONF AU - García-Tabarés Valdivieso, A. AU - Tomás, R. ED - Schaa, Volker RW ED - Jansson, Andreas ED - Shea, Thomas ED - Olander, Johan TI - Optics-Measurement-Based BPM Calibration J2 - Proc. of IBIC2019, Malmö, Sweden, 08-12 September 2019 CY - Malmö, Sweden T2 - International Beam Instrumentation Conferenc T3 - 8 LA - english AB - Beam position monitors (BPMs) are key elements in accelerator operation, providing essential information about different beam parameters that are directly related to the accelerator performance. In order to obtain an accurate conversion from an induced voltage to the center of charge position, the BPMs have to be calibrated prior to its installation in the accelerator. This calibration procedure can only be performed when the accelerator is in a period of non-activity and does not completely reproduce the exact conditions that occur during the machine operation. Discrepancies observed during the optics measurements at the Large Hadron Collider and the Proton Synchrotron Booster show that the impact of the BPM calibration factors on the optics functions was greater than expected from the design values and tolerances. Measurement of the optics functions allows obtaining extra information on BPM calibration together with its associated uncertainty and resolution. The optics measurement based calibration allows further developing new techniques for computing optics functions that are biased by a possible miss-calibration such as beta function, dispersion function and beam action. PB - JACoW Publishing CP - Geneva, Switzerland SP - 610 EP - 614 KW - optics KW - factory KW - collider KW - dipole KW - injection DA - 2019/11 PY - 2019 SN - 2673-5350 SN - 978-3-95450-204-2 DO - doi:10.18429/JACoW-IBIC2019-WEPP034 UR - http://jacow.org/ibic2019/papers/wepp034.pdf ER -