Speaker
Mauro Migliorati
(Istituto Nazionale di Fisica Nucleare - Sez. Roma 1)
Description
The growth time of transverse coupled-bunch instability (TCBI) in the vertical direction was
measured at SuperKEKB rings. Resistive wall (RW) impedance is the primary source of driving
TCBI. As a collider, special vacuum chambers are remarkable sources of RW impedance in
addition to RW impedance from regular chambers. Such chambers include collimators where the
chamber gap is very small and interaction region where the vertical beta functions are very
large. The classical theory of TCBI based on uniform filling patterns is used to estimate the
growth time and compared with experimental results.
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Primary author
Demin Zhou
(High Energy Accelerator Research Organization)
Co-authors
Takuya Ishibashi
(High Energy Accelerator Research Organization)
Mauro Migliorati
(Istituto Nazionale di Fisica Nucleare - Sez. Roma 1)
Dr
Gaku Mitsuka
(KEK)
Makoto Tobiyama
(High Energy Accelerator Research Organization)
