RuPAC2014 - List of Authors (Smirnov, A.V.)

Paper

Title

Page

Ultrahigh Vacuum in Superconducting Synchrotrons

23

A.V. Smirnov, A.V. Butenko, A.R. Galimov
JINR, Dubna, Moscow Region, Russia
A.M. Bazanov, A. Nesterov
JINR/VBLHEP, Dubna, Moscow region, Russia

The achievement of ultrahigh vacuum conditions in the range of 10^-10 – 10^-12 Torr is a very complicate task for charged particle accelerators. For superconducting accelerators the main rest gas is hydrogen which does not freeze effectively on the chamber wall even under the liquid helium temperature. Fast ramp of the magnetic field in the superconducting synchrotrons leads to the heating of the vacuum chamber that brings an additional problem for the achievement of the ultrahigh vacuum. In this talk the review of ultrahigh vacuum systems in superconducting accelerators is presented. Non-evaporated getters under the liquid nitrogen temperature are planned to the achievement of necessary vacuum conditions in the new accelerator complex of the NICA project (JINR, Russia).

Slides TUCB01 [2.220 MB]

TUPSA02

Superconducting Unclosed Shields in High Energy Physics

39

E.A. Kulikov, G.L. Dorofeev, V.M. Drobin
JINR/VBLHEP, Dubna, Moscow region, Russia
H. Malinowski, A.V. Smirnov
JINR, Dubna, Moscow Region, Russia

This paper presents the experimental and theoretical results of studying the unclosed shields made from LTS (low temperature superconductor) and HTS (high temperature superconductor) materials to obtain a homogeneous magnetic field in solenoids. There is a comparison of LTS and HTS shields,the construction peculiarities are described. HTS shield was proposed to obtain the required magnetic field homogeneity (about 10^-5) in the 6 meters length solenoid of the electron cooling section which will be installed in the heavy ion collider of the NICA project (JINR, Russia).

THX03

Status of the Nuclotron

283

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

Since last RuPAC five runs of the Nuclotron operation were performed. Diagnostic and control systems were improved. Commissioning of new quench detection system was completed. Deuteron beam was accelerated up to maximum design energy corresponding to 2 T of the dipole magnetic field. Stochastic cooling of coasting deuteron, coasting and bunched carbon beams was obtained. First run with new heavy ion source was performed. Results of these and other works are presented.

Slides THX03 [1.639 MB]

Paper	Title	Page
TUCB01	Ultrahigh Vacuum in Superconducting Synchrotrons	23
	A.V. Smirnov, A.V. Butenko, A.R. Galimov JINR, Dubna, Moscow Region, Russia A.M. Bazanov, A. Nesterov JINR/VBLHEP, Dubna, Moscow region, Russia
	The achievement of ultrahigh vacuum conditions in the range of 10^-10 – 10^-12 Torr is a very complicate task for charged particle accelerators. For superconducting accelerators the main rest gas is hydrogen which does not freeze effectively on the chamber wall even under the liquid helium temperature. Fast ramp of the magnetic field in the superconducting synchrotrons leads to the heating of the vacuum chamber that brings an additional problem for the achievement of the ultrahigh vacuum. In this talk the review of ultrahigh vacuum systems in superconducting accelerators is presented. Non-evaporated getters under the liquid nitrogen temperature are planned to the achievement of necessary vacuum conditions in the new accelerator complex of the NICA project (JINR, Russia).
	Slides TUCB01 [2.220 MB]

TUPSA02	Superconducting Unclosed Shields in High Energy Physics	39
	E.A. Kulikov, G.L. Dorofeev, V.M. Drobin JINR/VBLHEP, Dubna, Moscow region, Russia H. Malinowski, A.V. Smirnov JINR, Dubna, Moscow Region, Russia
	This paper presents the experimental and theoretical results of studying the unclosed shields made from LTS (low temperature superconductor) and HTS (high temperature superconductor) materials to obtain a homogeneous magnetic field in solenoids. There is a comparison of LTS and HTS shields,the construction peculiarities are described. HTS shield was proposed to obtain the required magnetic field homogeneity (about 10^-5) in the 6 meters length solenoid of the electron cooling section which will be installed in the heavy ion collider of the NICA project (JINR, Russia).

THX03	Status of the Nuclotron	283
	A.O. Sidorin, N.N. Agapov, A.V. Alfeev, V. Andreev, V. Batin, D.E. Donets, E.D. Donets, E.E. Donets, A.V. Eliseev, A.R. Galimov, E.V. Gorbachev, A. Govorov, E.V. Ivanov, V. Karpinsky, H.G. Khodzhibagiyan, A. Kirichenko, V. Kobets, A.D. Kovalenko, O.S. Kozlov, K.A. Levterov, V.A. Mikhailov, V. Monchinsky, S. Romanov, N. Shurkhno, I. Slepnev, V. Slepnev, A.V. Smirnov, G.V. Trubnikov, A. Tuzikov, B. Vasilishin, V. Volkov JINR, Dubna, Moscow Region, Russia O.I. Brovko, A.V. Butenko, A. Nesterov, A.V. Philippov, G.S. Sedykh JINR/VBLHEP, Dubna, Moscow region, Russia
	Since last RuPAC five runs of the Nuclotron operation were performed. Diagnostic and control systems were improved. Commissioning of new quench detection system was completed. Deuteron beam was accelerated up to maximum design energy corresponding to 2 T of the dipole magnetic field. Stochastic cooling of coasting deuteron, coasting and bunched carbon beams was obtained. First run with new heavy ion source was performed. Results of these and other works are presented.
	Slides THX03 [1.639 MB]