HB2021 - List of Keywords (betatron)

Paper	Title	Other Keywords	Page
MOP22	A Dedicated Wake-Building Feedback System to Study Single Bunch Instabilities in the Presence of Strong Space Charge	space-charge, kicker, pick-up, feedback	135
	R. Ainsworth, A.V. Burov, N. Eddy, A. Semenov Fermilab, Batavia, Illinois, USA
	Recent advances in the theoretical understanding of beam stability in the presence of strong space charge, has suggested a new class of instabilities known as convective instabilities. A novel approach to excite and study these instabilities will be to install a ‘waker’ system, a dedicated wake-building feedback system. The System was installed in the Fermilab Recycler and commissioned during 2021. The first results are presented.
DOI •	reference for this paper ※ doi:10.18429/JACoW-HB2021-MOP22
About •	Received ※ 19 October 2021 — Revised ※ 20 October 2021 — Accepted ※ 26 November 2021 — Issued ※ 12 April 2022
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUAC2	Impact of Power Supply Ripple on the Beam Performance of the Large Hadron Collider and the High-Luminosity LHC	power-supply, experiment, dipole, operation	170
	S. Kostoglou, H. Bartosik, Y. Papaphilippou, G. Sterbini CERN, Geneva, Switzerland
	Harmonics of the mains frequency (50 Hz) have been systematically observed in the form of dipolar excitations in the transverse beam spectrum of the Large Hadron Collider (LHC) since the beginning of its operation. The power supply ripple, consisting of both fundamental and higher frequency components, is proven not to be the result of an artifact of the instrumentation systems with which they are observed. Potential sources of the perturbation have been identified through systematic analysis and experimental studies. Single-particle tracking simulations have been performed including a realistic power supply ripple spectrum, as acquired from experimental observations, to demonstrate the impact of such noise effects on beam performance.
	Slides TUAC2 [3.678 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-HB2021-TUAC2
About •	Received ※ 04 October 2021 — Revised ※ 20 October 2021 — Accepted ※ 23 November 2021 — Issued ※ 25 February 2022
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

MOP22

A Dedicated Wake-Building Feedback System to Study Single Bunch Instabilities in the Presence of Strong Space Charge

space-charge, kicker, pick-up, feedback

135

R. Ainsworth, A.V. Burov, N. Eddy, A. Semenov
Fermilab, Batavia, Illinois, USA

Recent advances in the theoretical understanding of beam stability in the presence of strong space charge, has suggested a new class of instabilities known as convective instabilities. A novel approach to excite and study these instabilities will be to install a ‘waker’ system, a dedicated wake-building feedback system. The System was installed in the Fermilab Recycler and commissioned during 2021. The first results are presented.

DOI •

reference for this paper ※ doi:10.18429/JACoW-HB2021-MOP22

About •

Received ※ 19 October 2021 — Revised ※ 20 October 2021 — Accepted ※ 26 November 2021 — Issued ※ 12 April 2022

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUAC2

Impact of Power Supply Ripple on the Beam Performance of the Large Hadron Collider and the High-Luminosity LHC

power-supply, experiment, dipole, operation

170

S. Kostoglou, H. Bartosik, Y. Papaphilippou, G. Sterbini
CERN, Geneva, Switzerland

Harmonics of the mains frequency (50 Hz) have been systematically observed in the form of dipolar excitations in the transverse beam spectrum of the Large Hadron Collider (LHC) since the beginning of its operation. The power supply ripple, consisting of both fundamental and higher frequency components, is proven not to be the result of an artifact of the instrumentation systems with which they are observed. Potential sources of the perturbation have been identified through systematic analysis and experimental studies. Single-particle tracking simulations have been performed including a realistic power supply ripple spectrum, as acquired from experimental observations, to demonstrate the impact of such noise effects on beam performance.

Slides TUAC2 [3.678 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-HB2021-TUAC2

About •

Received ※ 04 October 2021 — Revised ※ 20 October 2021 — Accepted ※ 23 November 2021 — Issued ※ 25 February 2022

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)