Grigory Trubnikov

NICA PROJECT AT JINR

The project of Nuclotron-based Ion Collider fAcility NICA/MPD (MultiPurpose Detector) under development at JINR (Dubna) is presented. The general goals of the project are providing of colliding beams for experimental studies of both hot and dense strongly interacting baryonic matter and spin physics (in collisions of polarized protons and deuterons). The first program requires providing of heavy ion collisions in the energy range of \( \sqrt {S_{NN} } \) = 4−11 GeV1 at average luminosity of L = 1 × 1027 cm−2 s−1 for 197Au79+ nuclei. The polarized beams mode is proposed to be used in energy sNN = 12−27 GeV (protons at luminosity of L ≥ 1 × 1030 cm−2 s−1. The key issue of the Project is application of cooling methods—stochastic and electron ones. The report contains description of the facility scheme and characteristics in heavy ion operation mode, status and plans of the project development.

Superconducting Magnets for the NICA Accelerator Complex in Dubna

NICA is the new accelerator complex being under design and construction at JINR. The facility is aimed at providing collider experiments with heavy ions up to Uranium in a center of mass energy range from 4 to 11 GeV/u and an average luminosity up to 1027 cm-2 · s-1. The collisions of polarized deuterons are also foreseen. The facility includes two injector chains, a new superconducting Booster synchrotron, the existing 6 A · GeV superconducting synchrotron-Nuclotron, and the new superconducting Collider consisting of two rings of about 500 m circumference each. The Booster synchrotron and the NICA Collider are based on an iron-dominated “window frame”- type magnet with a hollow superconductor winding analogous to the Nuclotron magnet. The status of the design and construction of the full size model magnets for the Booster synchrotron as well as for the NICA Collider is presented.

Status of the Development of Superconducting Magnets for the NICA Project

NICA is a new accelerator complex that is being under design and construction at JINR. The facility is aimed at providing collider experiments with heavy ions up to Uranium in a center of mass energy range from 4 to 11 GeV/u and an average luminosity up to 1027 cm-2 s-1. The collisions of polarized deuterons are also foreseen. The facility includes two injector chains, a new superconducting booster synchrotron, the existing 6 superconducting synchrotron-Nuclotron, and a new superconducting collider consisting of two rings, each of about 503 m in circumference. The booster synchrotron and the NICA collider are based on an iron-dominated “window frame”-type magnets with a hollow superconductor winding analogous to the Nuclotron magnet. The status of the development of the full size model magnets for the booster synchrotron as well as for the NICA collider is presented.

Heavy ion collider facility NICA at JINR (Dubna): status and development

The project of Nuclotron-based Ion Collider fAcility NICA/MPD (MultiPurpose Detector) under development at JINR (Dubna) is presented. The general goals of the project are providing of colliding beams for experimental studies of both hot and dense strongly interacting baryonic matter and spin physics (in collisions of polarized protons and deuterons). The first program requires providing of heavy ion collisions in the energy range of sNN = 411 GeV at average luminosity of L  110 27 cm 2 s 1 for 197 Au 79 nuclei. The polarized beams mode is proposed to be used in energy range of sNN = 1227 GeV (protons) at luminosity of L  110 cms. The report contains description of the facility scheme and characteristics in heavy ion operation mode, status and plans of the project development.

Superconducting Magnets for the NICA Accelerator Collider Project

Nuclotron-based Ion Collider fAcility (NICA) is a new accelerator collider complex under construction at the Joint Institute for Nuclear Research. The facility is aimed at providing collider experiments with heavy ions up to Gold in the center of mass energy from 4 to 11 GeV/u and an average luminosity up to 1 · 1027 cm-2s-1 for Au79+. The collisions of polarized deuterons are also foreseen. The facility includes two injector chains, a new superconducting booster synchrotron, the existing 6-AGeV superconducting synchrotron Nuclotron, and a new superconducting collider consisting of two rings, each 503 m in circumference. The booster synchrotron and the NICA collider are based on an iron-dominated “window frame”-type magnet with a hollow superconductor winding analogous to the Nuclotron magnet. The status of the serial production and test of the magnets for the booster synchrotron and the development of the full-size model magnets for the NICA collider is presented. The test results of magnets are discussed. The status of the construction of the facility for serial tests of superconducting magnets for the NICA project is described.

Heavy ion collider project NICA/MPD at JINR (Dubna)

New project NICA/MPD (Nuclotron-based Ion Collider fAcility + MultiPurpose Detector) is under active development now at JINR (Dubna). The general goal of the project is to start in the coming 5 years an experimental study of hot and dense strongly interacting matter and search for possible signs of the mixed phase and critical endpoint in heavy ion collisions. This study should be carried out at nucleon-nucleon centre-of-mass energy √sNN = 4-11 GeV and average luminosity of L = 10E27 cm s for Au (79+). Another goal of the project is aimed to study spin physics with colliding beams of polarized protons and deuterons. The report contains physics motivation and main characteristics of the facility: scheme and operation scenario, proposed methods of intense ion beam formation and achievement of the required luminosity, conceptual design of the MPD. Status and plans of the project development are presented as well.

Application of ion beam cooling in the NICA accelerator complex. Experimental study of stochastic cooling at Nuclotron, JINR (Dubna)

The project of Nuclotron-based Ion Collider fAcility NICA/MPD (MultiPurpose Detector) is under development at JINR (Dubna) now. The general goals of the project are providing of colliding beams for experimental studies of both hot and dense strongly interacting baryonic matter and spin physics (in collisions of polarized protons and deuterons).

Status of NICA project at JINR

The NICA (Nuclotron-based Ion Collider fAcility) project is now under active realization at the Joint Institute for Nuclear Research (JINR, Dubna). The main goal of the project is a study of hot and dense strongly interacting matter in heavy ion (up to Au) collisions at the centre-of-mass energies up to 11 GeV per nucleon. Two modes of operation are foreseen, collider mode and extracted beams, with two detectors: MPD and BM@N. The both experiments are in preparation stage. An average luminosity in the collider mode is expected as 10E27 cm-2 s-1 for Au (79+). Extracted beams of various nucleus species with maximum momenta of 13 GeV/c (for protons) will be available. A study of spin physics with extracted and colliding beams of polarized deuterons and protons at the energies up to 27 GeV (for protons) is foreseen with the NICA facility. The proposed program allows one to search for possible signs of phase transitions and critical phenomena as well as to shed light on the problem of the nucleon spin structure.

Introduction to Circular Accelerators - Basic Science and Applied Research

This paper gives an introduction to history and overview of circular particle accelerators, reviews acceleration methods and basic principles of: weak and strong focusing, transverse and longitudinal particle motion, optic elements operation. The classification of circular machines is given. Author overviews future projects and technological applied research of particle accelerators.

Circular accelerators: Basis and Applications

This paper gives an introduction to particle accelerators and reviews the basic principles of circular accelerators. An overview of technological applications in both basic and applied research is provided including a list of accelerator facilities at the Joint Institute for Nuclear Research (JINR) Dubna.