RuPAC2021 - List of Keywords (betatron)

Paper	Title	Other Keywords	Page
WED04	Precise Analysis of Beam Optics at the VEPP-4M by Turn-by-Turn Betatron Phase Advance Measurement	optics, collider, lattice, experiment	79
	I.A. Morozov, P.A. Piminov, I.S. Yakimov BINP SB RAS, Novosibirsk, Russia
	Turn-by-turn (TbT) beam centroid signals can be used to evaluate various relevant accelerator parameters including betatron frequencies and optical functions. Accurate estimation of parameters and corresponding variances are important to drive accelerator lattice correction. Signals acquired from beam position monitors (BPMs) are limited by beam decoherence and BPM resolution. Therefore, it is important to obtain accurate estimations from available data. Several methods based on harmonic analysis of TbT data are compared and applied to the VEPP-4M experimental signals. The accuracy of betatron frequency, amplitude, and phase measurements are investigated. Optical functions obtained from amplitudes and phases are compared.
	Slides WED04 [3.771 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WED04
About •	Received ※ 12 September 2021 — Revised ※ 20 September 2021 — Accepted ※ 23 September 2021 — Issued ※ 20 October 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPSC34	Treatment of the Results Measurement of Profile Beam Using Wire Scanners at Accelerator U-70 IHEP	proton, feedback, detector, operation	410
	D.A. Vasiliev, V.T. Baranov, V.A. Kalinin, O.P. Lebedev, A. Lutchev, D.A. Savin IHEP, Moscow Region, Russia
	The IHEP has developed fast wire scanners based on servomotors with a scanning speed of V = 16m/s. For processing of analog signals from detectors, a digital USB oscilloscope NI USB-5133 manufactured by National Instruments has been chosen. The paper describes methods of data processing from a wire scanner using a program developed in the LabVIEW environment and obtaining information about beam parameters as well. To determine the frequency of beam revolution, a fast Fourier transform is used. The measured input signal is integrated at a chosed number of turns of the beam. The amplitude, center position, offset, rms deviation of the resulting distribution and beam sizes at the corresponding energy level are calculated using the Gaussian Peak Fit VI library element. The data of beam profile in different modes of accelerator operation are presented.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC34
About •	Received ※ 06 September 2021 — Revised ※ 07 September 2021 — Accepted ※ 13 September 2021 — Issued ※ 28 September 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

WED04

Precise Analysis of Beam Optics at the VEPP-4M by Turn-by-Turn Betatron Phase Advance Measurement

optics, collider, lattice, experiment

79

I.A. Morozov, P.A. Piminov, I.S. Yakimov
BINP SB RAS, Novosibirsk, Russia

Turn-by-turn (TbT) beam centroid signals can be used to evaluate various relevant accelerator parameters including betatron frequencies and optical functions. Accurate estimation of parameters and corresponding variances are important to drive accelerator lattice correction. Signals acquired from beam position monitors (BPMs) are limited by beam decoherence and BPM resolution. Therefore, it is important to obtain accurate estimations from available data. Several methods based on harmonic analysis of TbT data are compared and applied to the VEPP-4M experimental signals. The accuracy of betatron frequency, amplitude, and phase measurements are investigated. Optical functions obtained from amplitudes and phases are compared.

Slides WED04 [3.771 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WED04

About •

Received ※ 12 September 2021 — Revised ※ 20 September 2021 — Accepted ※ 23 September 2021 — Issued ※ 20 October 2021

Cite •

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

WEPSC34

Treatment of the Results Measurement of Profile Beam Using Wire Scanners at Accelerator U-70 IHEP

proton, feedback, detector, operation

410

D.A. Vasiliev, V.T. Baranov, V.A. Kalinin, O.P. Lebedev, A. Lutchev, D.A. Savin
IHEP, Moscow Region, Russia

The IHEP has developed fast wire scanners based on servomotors with a scanning speed of V = 16m/s. For processing of analog signals from detectors, a digital USB oscilloscope NI USB-5133 manufactured by National Instruments has been chosen. The paper describes methods of data processing from a wire scanner using a program developed in the LabVIEW environment and obtaining information about beam parameters as well. To determine the frequency of beam revolution, a fast Fourier transform is used. The measured input signal is integrated at a chosed number of turns of the beam. The amplitude, center position, offset, rms deviation of the resulting distribution and beam sizes at the corresponding energy level are calculated using the Gaussian Peak Fit VI library element. The data of beam profile in different modes of accelerator operation are presented.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC34

About •

Received ※ 06 September 2021 — Revised ※ 07 September 2021 — Accepted ※ 13 September 2021 — Issued ※ 28 September 2021

Cite •

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