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RIS citation export for THPMB044: Limitations on Optics Measurements in the LHC

AU - Skowroński, P.K.
AU - Carlier, F.S.
AU - Coello de Portugal, J.M.
AU - Garcia-Tabares, A.
AU - Langner, A.
AU - Maclean, E.H.
AU - Malina, L.
AU - McAteer, M.
AU - Persson, T.
AU - Tomás, R.
ED - Petit-Jean-Genaz, Christine
ED - Kim, Dong Eon
ED - Kim, Kyung Sook
ED - Ko, In Soo
ED - Schaa, Volker RW
TI - Limitations on Optics Measurements in the LHC
J2 - Proc. of IPAC2016, Busan, Korea, May 8-13, 2016
C1 - Busan, Korea
T2 - International Particle Accelerator Conference
T3 - 7
LA - english
AB - In preparation of the optics commissioning at an energy of 6.5 TeV, many improvements have been done to cope with the expected reduced signal to noise ratio due to lowered bunch intensities imposed by machine protection considerations. This included, among others, an increase of the flat top duration of the AC dipole excitations, which allowed to use more turn-by-turn data for the analysis. The longer data acquisition revealed slow drifts of the optics, which limited the increased measurement precision. Furthermore, we will present how orbit drifts influenced dispersion measurements and, as a consequence, posed another limitation for the optics correction. In this paper we will discuss the implications of these observations for the measurement and correction of the optics.
CP - Geneva, Switzerland
SP - 3339
EP - 3342
KW - optics
KW - dipole
KW - injection
KW - hadron
KW - luminosity
DA - 2016/06
PY - 2016
SN - 978-3-95450-147-2
DO - 10.18429/JACoW-IPAC2016-THPMB044
UR - http://jacow.org/ipac2016/papers/thpmb044.pdf
ER -