TY - CPAPER
AU - Nosych, A.A.
AU - Iriso, U.
AU - Olmos, A.
AU - Wendt, M.
TI - Overview of the Geometrical Non-Linear Effects of Button BPMs and Methodology for Their Efficient Suppression
J2 - Proc. of IBIC2014
AB - This paper describes an overview of the geometric non-linear effects common to beam position monitors (BPMs) installed in the accelerators and a methodology to correct for these effects. A typical characteristic curve of a pick-up is linear within a limited range from the BPM origin. At larger offsets the non-linearity of the curve is more pronounced and gets worse if the button diameter is small with respect to the beam pipe diameter. The general real-time linearization methods usually utilize linear correction combined with a simplistic polynomial, which may lead to inaccuracies in their limited application. We have developed a more rigorous methodology to suppress the non-linear effects of the BPMs through electromagnetic (EM) simulations and 2D fitting approximations. The focus is mainly on standard button pick-ups for the electron (ALBA) and proton machines (LHC).
PB - JACoW
CY - Geneva, Switzerland
SP - 298
EP - 302
KW - pick-up
KW - simulation
KW - coupling
KW - storage-ring
KW - vacuum
DA - 2014/10
PY - 2014
SN - 978-3-95450-141-0
UR - http://jacow.org/IBIC2014/papers/tupf03.pdf
ER -