Paper | Title | Page |
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MOY02 | NICA Ion Coolider at JINR | 12 |
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The Nuclotron-based Ion Collider fAcility (NICA) is under construction in JINR. The NICA goals are providing of colliding beams for studies of hot and dense strongly interacting baryonic matter and spin physics. The accelerator facility of collider NICA consists of following elements: acting Alvarez-type linac LU-20 of light ions at energy 5 MeV/u, constructed a new light ion linac of light ions at energy 7 MeV/n and protons at energy 13 MeV, new acting heavy ion linac HILAC with RFQ and IH DTL sections at energy 3.2 MeV/u, new acting superconducting booster synchrotron at energy up 600 MeV/u, acting superconducting synchrotron Nuclotron at gold ion energy 4.5 GeV/n and mounted two Collider storage rings with two interaction points. The status of acceleration complex NICA is under discussion. | ||
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Slides MOY02 [15.467 MB] | |
DOI • | reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOY02 | |
About • | Received ※ 24 September 2021 — Revised ※ 25 September 2021 — Accepted ※ 07 October 2021 — Issued ※ 12 October 2021 | |
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MOPSA16 | Design and Characteristics of Cryostat for Testing of Low-Beta 325 MHz Half-Wave Resonators | 165 |
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Design of the prototype cryomodule for testing low-beta 325 MHz half-wave cavities is currently undergoing at INP BSU. The cryomodule allows performing intermediate vacuum-, temperature-, and rf-tests during the fabrication of half-wave resonators. The first experimental results of cryomodule cooling down to liquid nitrogen temperatures are presented and discussed. The pressure and temperature control allow us to estimate the main cooling/heating characteristics of the cryostat at different operation stages. The presented test cryomodule will be used for further development and production of superconductive niobium cavities for the Nuclotron-based Ion Collider fAcility (NICA) injector. | ||
DOI • | reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA16 | |
About • | Received ※ 16 September 2021 — Revised ※ 18 September 2021 — Accepted ※ 23 September 2021 — Issued ※ 26 September 2021 | |
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MOPSA29 | Applied Research Stations and New Beam Transfer Lines at the NICA Accelerator Complex | 172 |
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Applied research at the NICA accelerator complex include the following areas that are under construction: single event effects testing on capsulated microchips (energy range of 150-500 MeV/n) at the Irradiation Setup for Components of Radioelectronic Apparature (ISCRA) and on decapsulated microchips (ion energy up to 3,2 MeV/n) at the Station of CHip Irradiation (SOCHI), space radiobiological research and modelling of influence of heavy charged particles on cognitive functions of the brain of small laboratory animals and primates (ener-gy range 500-1000 MeV/n) at the Setup for Investigation of Medical Biological Objects (SIMBO). Description of main systems and beam parameters at the ISCRA, SOCHI and SIMBO applied research stations is presented. The new beam transfer lines from the Nuclotron to ISCRA and SIMBO stations, and from HILAC to SOCHI station are being constructed. Description of the transfer lines layout, the magnets and diagnostic detectors, results of the beam dynamics simulations are described given. | ||
DOI • | reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA29 | |
About • | Received ※ 01 October 2021 — Revised ※ 02 October 2021 — Accepted ※ 09 October 2021 — Issued ※ 13 October 2021 | |
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TUPSB08 | Magneto-Optical Structure of the NICA Collider With High Critical Energy | 245 |
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In the proton option of the NICA collider, there is a problem of crossing transition energy. To do this, we have investigated ways to increase the critical energy for the proton option of the NICA collider. The method of superperiodic modulation of quadrupole gradients is applied. Two variants of dispersion suppression on the arch for matching with straight sections are considered. The selection of sextupoles is carried out to suppress the natural chromaticity and compensate for the sextupole component. The Twiss parameters for the proposed structures are given, as well as the dynamic apertures and working points are investigated. | ||
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Poster TUPSB08 [3.646 MB] | |
DOI • | reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB08 | |
About • | Received ※ 17 September 2021 — Revised ※ 27 September 2021 — Accepted ※ 02 October 2021 — Issued ※ 21 October 2021 | |
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WEA01 | Beam Transfer Systems of NICA Facility: from HILAC to Booster | 61 |
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New accelerator complex is being constructed by Joint Institute for Nuclear Research (Dubna, Russia) in frame of Nuclotron-based Ion Collider fAcility (NICA) project. The NICA layout includes new Booster and existing Nuclotron synchrotrons as parts of the heavy ion injection chain of the NICA Collider as well as beam transport lines which are the important link for the whole accelerator facility. Designs and current status of beam transfer systems in the beginning part of the NICA complex, which are partially commissioned, are presented in this paper. | ||
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Slides WEA01 [26.886 MB] | |
DOI • | reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEA01 | |
About • | Received ※ 07 October 2021 — Revised ※ 08 October 2021 — Accepted ※ 13 October 2021 — Issued ※ 22 October 2021 | |
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WEA02 | Acceleration the Beams of He⁺ and Fe14+ Ions by HILAC and its Injection into NICA Booster in its Second Run | 65 |
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Injector of NICA accelerating facility based on the Heavy Ion Linear Accelerator (HILAC) is aimed to inject the heavy ions having atomic number A~200 and ratio A/Z - 6.25 produced by ESIS ion source accelerated up to the 3.2 MeV for the injection into superconducting synchrotron (SC) Booster. The project output energy of HILAC was verified on commissioning in 2018 using the beams of carbon ions produced with the Laser Ion Source and having ratio A/Z=6 that is close to the project one. Beams of He1+ ions were injected into Booster in its first run and accelerated in 2020. In 2021 ions of Fe14+ produced with the LIS were injected and accelerated up to 200 MeV/u. Beam formation of Fe ions and perspectives of using LIS for the production the ions with high atomic mass A and ratio A/Z matching to HILAC input parameters are described. | ||
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Slides WEA02 [12.908 MB] | |
DOI • | reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEA02 | |
About • | Received ※ 07 October 2021 — Revised ※ 08 October 2021 — Accepted ※ 13 October 2021 — Issued ※ 14 October 2021 | |
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WEPSC14 | Booster RF System First Beam Tests | 370 |
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The project NICA is being constructed in JINR, to provide collisions of heavy ion beams in the energy range from 1 to 4.5 GeV/u at the luminosity level of 1·1027 cm-2·s⁻¹. A key element in the collider injection chain is the Booster a cycling accelerator of ions 197Au31+. The injection energy of particles is 3.2 MeV/u, extraction energy is 600MeV/u. Two Booster RF stations provide 10 kV of acceleration voltage. The frequency range from 587 kHz to 2526 kHz at the operation of the stations in the injector chain. The RF stations were fabricated in the Budker Institute of Nuclear Physics. The main design features and parameters of the first beam tests of the Booster RF system are discussed in this paper. | ||
DOI • | reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC14 | |
About • | Received ※ 17 September 2021 — Revised ※ 27 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 16 October 2021 | |
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THA01 | Status of the SC HWR Cavities Production for NICA Project | 85 |
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Since 2015 the superconducting (SC) linac-injector development for Nuclotron NICA (JINR, Dubna, Russia) is carried out by the collaboration of JINR, NRNU MEPhI, INP BSU, PTI NASB. This new SC linac is to accelerate protons up to 20 MeV and light ions to 7.5 MeV/u with possible energy upgrade up to 50 MeV for proton beam. This paper reports the current status of the development and manufacturing of superconducting accelerating cavities for a new linear accelerator of the injection complex of the Nuclotron-NICA project. | ||
DOI • | reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-THA01 | |
About • | Received ※ 26 September 2021 — Revised ※ 27 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 24 October 2021 | |
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MOY01 | The NICA Complex Injection Facility | 7 |
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The Nuclotron-based Ion Collider fAcility (NICA) is un-der construction in JINR. The NICA goals are providing of colliding beams for studies of hot and dense strongly interacting baryonic matter and spin physics. The NICA complex injection facility consists of four accelerators: Alvarez-type linac LU-20 of light ions up to 5 MeV/u; heavy ion linac HILAC with RFQ and IH DTL sections at energy 3.2 MeV/u; superconducting Booster synchrotron at energy up 578 MeV/u; superconducting synchrotron Nuclotron at gold ion energy 3.85 GeV/u. In the nearest future the old LU-20 will be substituted by a new light ion linac for acceleration of 2<A/z<3 ions up to 7 MeV/u with additional two acceleration sections for protons, first IH section for 13 MeV and the second one - superconducting for 20 MeV. The status of NICA injec-tion facility is under discussion. | ||
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Slides MOY01 [52.421 MB] | |
DOI • | reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOY01 | |
About • | Received ※ 05 October 2021 — Revised ※ 08 October 2021 — Accepted ※ 13 October 2021 — Issued ※ 18 October 2021 | |
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MOPSA01 |
The New Light-Ion Linac for the NICA Injection Complex | |
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A joint team from JINR (Dubna, Russia) and Bevatech GmbH (Frankfurt-am-Main, Germany) is now realizing the new light ion linac LILac for the realization of the NICA project. The resonator design, the beam dynamics calculations, the vacuum system, RF system are presented. | ||
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MOPSA32 |
Sub Channel SOCHI of the NICA Accelerator Complex. Design Overview and Rigging at the NICA Accelerator Complex. Details of the Vacuum System | |
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As part of the tasks set, the NICA complex provides an additional channel with the main task to irradiate the microchip with beams of heavy ions with an energy of 3.2 MeV/n. The channel is based on the HILAC heavy-ion linear accelerator. The poster presents the main design features and original solutions necessary for the implementation of this project. The milestones are the special vacuum requirements and the limited space for the installation of the entire system. | ||
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TUPSB04 | Features of the Electronic Cooling System of the NICA Booster | 236 |
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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 | |
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TUPSB07 | Particle Collimation in the NICA Collider | 242 |
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The system of particles collimation developed for the NICA collider is considered. The main collimation goal is the beam halo cleaning to minimize the background for experiment. The main mechanisms of particle losses, including the ion recombination in electron cooler, are also reviewed. | ||
DOI • | reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB07 | |
About • | Received ※ 24 September 2021 — Revised ※ 08 October 2021 — Accepted ※ 13 October 2021 — Issued ※ 18 October 2021 | |
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WEPSC15 | Barrier Station RF1 of the NICA Collider. Design Features and Influence on Beam Dynamics | 373 |
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This paper reports on the design features and con-struction progress of the barrier bucket RF systems for the NICA collider being built at JINR, Dubna. Each of two collider rings has three RF systems named RF1 to 3. RF1 is a barrier bucket system used for particles capturing and accumulation during injection, RF2 and 3 are resonant systems operating at 22nd and 66th harmonics of the revolution frequency and used for the 22 bunches formation. The RF systems are de-signed by Budker INP. Both RF1 stations were manu-factured, delivered to JINR and tested at the stand. The test results are presented in the article, as well as some results of calculating the effect of the RF1 system on the beam dynamics. | ||
DOI • | reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC15 | |
About • | Received ※ 24 September 2021 — Revised ※ 26 September 2021 — Accepted ※ 27 September 2021 — Issued ※ 18 October 2021 | |
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