RuPAC2021 - List of Authors (Ahmanova, E.V.)

Paper	Title	Page
TUPSB04	Features of the Electronic Cooling System of the NICA Booster	236
	A.G. Kobets, E.V. Ahmanova, S.A. Melnikov, I.N. Meshkov, O. Orlov, S.V. Semenov, A.S. Sergeev, A.A. Sidorin JINR, Dubna, Moscow Region, Russia A.V. Butenko, K.G. Osipov, A.O. Sidorin, E. Syresin JINR/VBLHEP, Dubna, Moscow region, Russia A.V. Ivanov BINP SB RAS, Novosibirsk, Russia
	The report presents the results obtained during the commissioning the Electron Cooling System (ECS) of the Booster, the first in the chain of three synchrotrons of the NICA accelerator complex. The work was performed without an ion beam and with a circulating ion beam He¹⁺. In the work with a circulating ion beam, the effect of reducing the lifetime of the circulating ions was observed when the velocities of the cooling electrons and the cooled ions coincide. The dependences of the electron beam current on the ECS parameters for different electron energy values were experimentally obtained. The specific features of operation of electron gun of the NICA Booster are hollow beam formation and the phenomenon of virtual cathode creation confirmed both experiments and by numerical simulation.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB04
About •	Received ※ 20 September 2021 — Revised ※ 01 October 2021 — Accepted ※ 09 October 2021 — Issued ※ 13 October 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSB05	Longitudinal Impedance of the NICA Collider Ring and Ion Beam Stability	239
	S.A. Melnikov, E.V. Ahmanova, I.N. Meshkov JINR, Dubna, Moscow Region, Russia A.V. Ivanov NSU, Novosibirsk, Russia A.V. Ivanov BINP SB RAS, Novosibirsk, Russia M.Yu. Korobitsina, K.G. Osipov JINR/VBLHEP, Dubna, Moscow region, Russia
	The report presents the results of optimization of the longitudinal coupling impedance of the NICA collider ring using numerical simulation of its individual elements by the CST Studio. Based on the obtained results, analytical estimates of the stability of the ion beam in the ring are obtained for one energy value - 3 GeV/u.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB05
About •	Received ※ 27 September 2021 — Revised ※ 04 October 2021 — Accepted ※ 09 October 2021 — Issued ※ 14 October 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Features of the Electronic Cooling System of the NICA Booster

236

A.G. Kobets, E.V. Ahmanova, S.A. Melnikov, I.N. Meshkov, O. Orlov, S.V. Semenov, A.S. Sergeev, A.A. Sidorin
JINR, Dubna, Moscow Region, Russia
A.V. Butenko, K.G. Osipov, A.O. Sidorin, E. Syresin
JINR/VBLHEP, Dubna, Moscow region, Russia
A.V. Ivanov
BINP SB RAS, Novosibirsk, Russia

The report presents the results obtained during the commissioning the Electron Cooling System (ECS) of the Booster, the first in the chain of three synchrotrons of the NICA accelerator complex. The work was performed without an ion beam and with a circulating ion beam He¹⁺. In the work with a circulating ion beam, the effect of reducing the lifetime of the circulating ions was observed when the velocities of the cooling electrons and the cooled ions coincide. The dependences of the electron beam current on the ECS parameters for different electron energy values were experimentally obtained. The specific features of operation of electron gun of the NICA Booster are hollow beam formation and the phenomenon of virtual cathode creation confirmed both experiments and by numerical simulation.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB04

About •

Received ※ 20 September 2021 — Revised ※ 01 October 2021 — Accepted ※ 09 October 2021 — Issued ※ 13 October 2021

Cite •

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

TUPSB05

Longitudinal Impedance of the NICA Collider Ring and Ion Beam Stability

239

S.A. Melnikov, E.V. Ahmanova, I.N. Meshkov
JINR, Dubna, Moscow Region, Russia
A.V. Ivanov
NSU, Novosibirsk, Russia
A.V. Ivanov
BINP SB RAS, Novosibirsk, Russia
M.Yu. Korobitsina, K.G. Osipov
JINR/VBLHEP, Dubna, Moscow region, Russia

The report presents the results of optimization of the longitudinal coupling impedance of the NICA collider ring using numerical simulation of its individual elements by the CST Studio. Based on the obtained results, analytical estimates of the stability of the ion beam in the ring are obtained for one energy value - 3 GeV/u.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB05

About •

Received ※ 27 September 2021 — Revised ※ 04 October 2021 — Accepted ※ 09 October 2021 — Issued ※ 14 October 2021

Cite •

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