18 September 2022 to 1 October 2022
Lithuania
Europe/Zurich timezone

"Imperfections and their correction in rings "

23 Sept 2022, 13:45
1h
VICTORIA hotel Kaunas (Lithuania)

VICTORIA hotel Kaunas

Lithuania

Miško St 11 LT-44321 Kaunas Lithuania

Speaker

Volker Ziemann (Uppsala University (SE))

Description

"After discussing how to account for the periodicity in rings, we first generalise the response coefficient R12, and then the orbit response matrix to such systems.
We move on to use the response matrix to correct the orbit and generalise the concept by introducing dispersion-free steering before turning to gradient errors and stop bands. Measuring and correcting the tune addresses one parameter of great importance for operating rings, whereas analysing the orbit response matrix with codes like LOCO measures many more, including the beta functions. We then digress on skew quadrupolar errors and betatron coupling and their detrimental effect.
Before closing we describe how to correct the chromaticity and mention a number of non-standard imperfections, so-called bloopers.

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