RUPAC2012 - List of Authors (Philippov, A.V.)

Paper

Title

Page

Status of the Nuclotron

117

A.O. Sidorin, N.N. Agapov, A.V. Alfeev, V. Andreev, V. Batin, A.V. Butenko, D.E. Donets, E.D. Donets, A.V. Eliseev, V.V. Fimushkin, A.R. Galimov, E.V. Gorbachev, A. Govorov, E.V. Ivanov, V. Karpinsky, V.D. Kekelidze, H.G. Khodzhibagiyan, A. Kirichenko, A.G. Kobets, A.D. Kovalenko, O.S. Kozlov, N.I. Lebedev, I.N. Meshkov, V.A. Mikhailov, V. Monchinsky, S. Romanov, T.V. Rukoyatkina, N. Shurkhno, I. Slepnev, V. Slepnev, A.V. Smirnov, A. Sorin, G.V. Trubnikov, A. Tuzikov, B. Vasilishin, V. Volkov
JINR, Dubna, Moscow Region, Russia
O.I. Brovko, D.E. Donets, A.V. Philippov
JINR/VBLHEP, Dubna, Moscow region, Russia

One of the goals of present Nuclotron development is to test operational modes, diagnostic and beam control equipment required for R&D of the NICA collider elements. Main achievement in this direction are descussed. Results of the last runs of the Nuclotron operation are presented.

Slides WEZCH03 [3.582 MB]

MOPPA016

Dynamics of 197Au⁷⁸⁺ Ions Generated in Recombination with Cooling Electrons in the NICA Collider

275

A.V. Eliseev
JINR, Dubna, Moscow Region, Russia
O.S. Kozlov, A.B. Kuznetsov, A.V. Philippov, A.O. Sidorin, A. Tuzikov
JINR/VBLHEP, Dubna, Moscow region, Russia
I.N. Meshkov
JINR/DLNP, Dubna, Moscow region, Russia

Ions 197Au⁷⁸⁺ are generated in recombination of original bare nuclei 197Au⁷⁹⁺ with cooling electrons in the electron cooler of the NICA Collider. The ions 197Au⁷⁸⁺ dynamics is considered in the in energy range 1–4.5 GeV/u when ion beam is bunched with RF voltage (collision mode operation of the NICA Collider). It is shown that some part of 197Au⁷⁸⁺ ions can be involved in synchrotron motion when other part suffers a chaotic motion regime. Most of these ions live in vacuum chamber until further recombination in to the state of 197Au⁷⁷⁺ and leave the Collider acceptance very fast. The evolution in time of ion distribution over the Collider aperture is presented.

TUPPB002

Effect of Gold Nuclei Recombination in Electron Cooling System on Beam Lifetime in the NICA Collider

307

A.V. Philippov, O.S. Kozlov, A.B. Kuznetsov, A. Tuzikov
JINR/VBLHEP, Dubna, Moscow region, Russia
I.N. Meshkov
JINR/DLNP, Dubna, Moscow region, Russia

On the basis of experimental data the production of the ions Au⁷⁸⁺ and Au⁷⁷⁺ as a result of step-by-step radiative recombination of bare nuclei on free electrons in the NICA Collider electron cooling system is presented. The influence of Au⁷⁸⁺ ions on the luminosity lifetime is discussed. The optimum working cycle of the NICA Collider is described.

WEPPC036

Experimental Studies of Secondary Electron-Electron Emission by Vacuum Chamber Surface

A.Yu. Rudakov
JINR, Dubna, Moscow Region, Russia
I.N. Meshkov
JINR/DLNP, Dubna, Moscow region, Russia
A.V. Philippov
JINR/VBLHEP, Dubna, Moscow region, Russia

The experiment to measure secondary electron yield (SEY) of the samples coated with titanium nitride (TiN2) is in progress at the test-bench "Recuperator". This work is related to the problem of the electron clouds formation in vacuum chamber surface. This effect plays an important role in limiting the performance of the collider NICA. The results of the experiment to measure SEY will allow us to choose the most suitable coating material of vacuum chambers. In this experiment we compared samples of stainless steel coated with titanium nitride and uncoated ones.

Paper	Title	Page
WEZCH03	Status of the Nuclotron	117
	A.O. Sidorin, N.N. Agapov, A.V. Alfeev, V. Andreev, V. Batin, A.V. Butenko, D.E. Donets, E.D. Donets, A.V. Eliseev, V.V. Fimushkin, A.R. Galimov, E.V. Gorbachev, A. Govorov, E.V. Ivanov, V. Karpinsky, V.D. Kekelidze, H.G. Khodzhibagiyan, A. Kirichenko, A.G. Kobets, A.D. Kovalenko, O.S. Kozlov, N.I. Lebedev, I.N. Meshkov, V.A. Mikhailov, V. Monchinsky, S. Romanov, T.V. Rukoyatkina, N. Shurkhno, I. Slepnev, V. Slepnev, A.V. Smirnov, A. Sorin, G.V. Trubnikov, A. Tuzikov, B. Vasilishin, V. Volkov JINR, Dubna, Moscow Region, Russia O.I. Brovko, D.E. Donets, A.V. Philippov JINR/VBLHEP, Dubna, Moscow region, Russia
	One of the goals of present Nuclotron development is to test operational modes, diagnostic and beam control equipment required for R&D of the NICA collider elements. Main achievement in this direction are descussed. Results of the last runs of the Nuclotron operation are presented.
	Slides WEZCH03 [3.582 MB]

MOPPA016	Dynamics of 197Au⁷⁸⁺ Ions Generated in Recombination with Cooling Electrons in the NICA Collider	275
	A.V. Eliseev JINR, Dubna, Moscow Region, Russia O.S. Kozlov, A.B. Kuznetsov, A.V. Philippov, A.O. Sidorin, A. Tuzikov JINR/VBLHEP, Dubna, Moscow region, Russia I.N. Meshkov JINR/DLNP, Dubna, Moscow region, Russia
	Ions 197Au⁷⁸⁺ are generated in recombination of original bare nuclei 197Au⁷⁹⁺ with cooling electrons in the electron cooler of the NICA Collider. The ions 197Au⁷⁸⁺ dynamics is considered in the in energy range 1–4.5 GeV/u when ion beam is bunched with RF voltage (collision mode operation of the NICA Collider). It is shown that some part of 197Au⁷⁸⁺ ions can be involved in synchrotron motion when other part suffers a chaotic motion regime. Most of these ions live in vacuum chamber until further recombination in to the state of 197Au⁷⁷⁺ and leave the Collider acceptance very fast. The evolution in time of ion distribution over the Collider aperture is presented.

TUPPB002	Effect of Gold Nuclei Recombination in Electron Cooling System on Beam Lifetime in the NICA Collider	307
	A.V. Philippov, O.S. Kozlov, A.B. Kuznetsov, A. Tuzikov JINR/VBLHEP, Dubna, Moscow region, Russia I.N. Meshkov JINR/DLNP, Dubna, Moscow region, Russia
	On the basis of experimental data the production of the ions Au⁷⁸⁺ and Au⁷⁷⁺ as a result of step-by-step radiative recombination of bare nuclei on free electrons in the NICA Collider electron cooling system is presented. The influence of Au⁷⁸⁺ ions on the luminosity lifetime is discussed. The optimum working cycle of the NICA Collider is described.

WEPPC036	Experimental Studies of Secondary Electron-Electron Emission by Vacuum Chamber Surface
	A.Yu. Rudakov JINR, Dubna, Moscow Region, Russia I.N. Meshkov JINR/DLNP, Dubna, Moscow region, Russia A.V. Philippov JINR/VBLHEP, Dubna, Moscow region, Russia
	The experiment to measure secondary electron yield (SEY) of the samples coated with titanium nitride (TiN2) is in progress at the test-bench "Recuperator". This work is related to the problem of the electron clouds formation in vacuum chamber surface. This effect plays an important role in limiting the performance of the collider NICA. The results of the experiment to measure SEY will allow us to choose the most suitable coating material of vacuum chambers. In this experiment we compared samples of stainless steel coated with titanium nitride and uncoated ones.