Tune shift due to the quadrupolar resistive-wall impedance of an elliptical beam pipe

Wang, Y.T.; Wang, N.; Xu, Haisheng; Xu, Gang

doi:10.1016/j.nima.2022.166414

Search citation statements

Order By: Relevance

Paper Sections

Select...

Introduction1

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2024

Publication Types

Select...

Article1

Relationship

Self Cite1

Independent0

Authors

Journals

Cited by 1 publication

(1 citation statement)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the CDR, the vacuum chamber has an elliptical cross section with minor and major semi-axis of 28 mm and 37.5 mm, respectively. However, considering the large incoherent tune shift contributed by the non-axial symmetrical vacuum chamber [6,7], the cross section has been changed to circular. Regarding the change of the chamber cross section, the impedance model is updated, as well as more impedance contributors are included.…”

Section: Introductionmentioning

confidence: 99%

Impedance driven collective effects in CEPC

Wang,

Zhang,

et al. 2024

J. Inst.

Self Cite

View full text Add to dashboard Cite

The Circular Electron Positron Collider is a double ring lepton collider covering beam energy from 45 GeV (Z) to 180 GeV (tt-bar). Beam coupling impedance and the collective effects that are triggered by the impedance are important subjects when targeting high machine performance of an electron positron collider. A robust impedance model is required for the instabilities evaluations as well as to investigate their possible mitigations. Meanwhile, a thorough investigation on the collective effects is essential to identify the critical issues on the beam instabilities. In this paper, a detailed impedance model has been built for the collider ring and dominant impedance contributors have been identified by evaluating the effective impedances. The potential collective instabilities driven by the impedance are also discussed.

show abstract

Section: Introductionmentioning

confidence: 99%