RuPAC2016 - List of Keywords (collider)

Paper	Title	Other Keywords	Page
MOZMH01	CEPC-SppC Accelerator Status	positron, luminosity, proton, booster	1
	J. Gao IHEP, Beijing, People's Republic of China
	In this talk we will give a bird view of the status Circular Electron Positron Collider (CEPC). The scientific goal and the collider design goal of CECP are described. The luminosity potentail of Super Proton-Proton Collider (SPPC) in the same tunnel of CEPC are also provided. The optimization of parameter designs for CEPC with different energies, machine lengthes, single ring and crab-waist collision partial double ring options, etc. have been given systimatically. The machine lattice design philosophy and conrete lattice design are given. The corresponding SC RF system designs corresponding to different machine options are presented. Key issues for technology R&D, possible time schedule and international collaboration are addressed.
	Slides MOZMH01 [10.473 MB]
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TUYMH01	Status of the Future Circular Collider Study	hadron, lepton, luminosity, optics	34
	M. Benedikt CERN, Geneva, Switzerland
	Following the 2013 update of the European Strategy for Particle Physics, the international Future Circular Collider (FCC) Study has been launched by CERN as host institute, to design an energy frontier hadron collider (FCC-hh) in a new 80-100 km tunnel with a centre-of-mass energy of about 100 TeV, an order of magnitude beyond the LHC's, as a long-term goal. The FCC study also includes the design of a 90-350 GeV high-luminosity lepton collider (FCC-ee) installed in the same tunnel, serving as Higgs, top and Z factory, as a potential intermediate step, as well as an electron-proton collider option (FCC-he). The physics cases for such machines will be assessed and concepts for experiments will be developed in time for the next update of the European Strategy for Particle Physics by the end of 2018. The presentation will summarize the status of machine designs and parameters and discuss the essential technical components to be developed in the frame of the FCC study. Key elements are superconducting accelerator-dipole magnets with a field of 16 T for the hadron collider and high-power, high-efficiency RF systems for the lepton collider. In addition the unprecedented beam power presents special challenges for the hadron collider for all aspects of beam handling and machine protection. First conclusions of geological investigations and implementation studies will be presented. The status of the FCC collaboration and the further planning for the study will be outlined.
	Slides TUYMH01 [13.196 MB]
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TUYMH03	Recommissioning and Perspectives of VEPP-2000 Complex	luminosity, injection, detector, positron	39
	Yu. A. Rogovsky, V.V. Anashin, D.E. Berkaev, A.S. Kasaev, E. Kenzhebulatov, I. Koop, A.A. Krasnov, G.Y. Kurkin, A.N. Kyrpotin, A.P. Lysenko, S.V. Motygin, E. Perevedentsev, V.P. Prosvetov, A.V. Semenov, A.I. Senchenko, P.Yu. Shatunov, Y.M. Shatunov, D.B. Shwartz, A.N. Skrinsky, I.M. Zemlyansky, Yu.M. Zharinov BINP SB RAS, Novosibirsk, Russia D.B. Shwartz NSU, Novosibirsk, Russia
	VEPP-2000 is electron-positron collider exploiting the novel concept of round colliding beams. After three seasons of data taking in the whole energy range of 160-1000 MeV per beam it was stopped in 2013 for injection chain upgrade. The linking to the new BINP source of intensive beams together with booster synchrotron modernization provides the drastic luminosity gain at top energy of VEPP-2000. Recomissioning status, fist results and perspectives of the VEPP-2000 complex will be presented.
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THCDMH02	Recent Optimized Design of ILC Cryomodule With Explosion Welding Technology	niobium, electron, cryomodule, linear-collider	141
	B.M. Sabirov JINR, Dubna, Moscow Region, Russia
	Primary purpose of this experiment is the development of techniques to simplify and make cheaper the construction of the cryomodules. In the current ILC TDR design the helium vessel and the connected pipes are made of expensive titanium. JINR in association with INFN several designs for these transitions have been produced and studied during the last years. The results of measuring microhardness by Vickers microindentation are issued of ~3.8 GPa and the breaking strength was 375 MPa. Helium leak measurements revealed no leaks at a background leak rate of 0.410^-10 atmcc/s. For imitation of use transition sample in real working position, connected with Nb cavity, Nb rings were joint with Nb pipe of samples by EBW. Superposition of all residual stresses may result plastic deformation, failure of welds, and consequently occurrence of a leak. Test result of thermocycles in LHe and in the LN ussued absence of leak at background leak rate ~0.510^-10 atmcc/sec. The results showed the full eligibility of suggested design Nb+Ti+SS transition sample not for only Linear Collider, but for any cryogenic systems.
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THCDMH03	The Progress on Manufacturing and Testing of the SC Magnets for the NICA Booster Synchrotron	booster, dipole, superconducting-magnet, synchrotron	144
	H.G. Khodzhibagiyan, N.N. Agapov, P.G. Akishin, V.V. Borisov, A.V. Bychkov, A.M. Donyagin, A.R. Galimov, O. Golubitsky, V. Karpinsky, B.Yu. Kondratiev, S.A. Korovkin, S.A. Kostromin, A.V. Kudashkin, G.L. Kuznetsov, D.N. Nikiforov, A.V. Shemchuk, S.A. Smirnov, A.Y. Starikov, G.V. Trubnikov JINR, Dubna, Moscow Region, Russia
	NICA is a new accelerator collider complex under construction at the Joint Institute for Nuclear Research in Dubna. 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^-2 s⁻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 is based on an iron-dominated "window frame"- type magnet with a hollow superconductor winding analogous to the Nuclotron magnet. The design of superconducting magnets for the NICA booster synchrotron is described. The progress of work on the manufacturing and testing of the magnets is discussed. The calculated and measured values of the characteristics of the magnets are presented. The status of the facility for serial test of superconducting magnets for the NICA and FAIR projects is described.
	Slides THCDMH03 [8.068 MB]
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FRCAMH07	NICA Collider Lattice Optimization	quadrupole, ion, dipole, lattice	166
	O.S. Kozlov, A.V. Butenko, H.G. Khodzhibagiyan, S.A. Kostromin, I.N. Meshkov, A.O. Sidorin, E. Syresin, G.V. Trubnikov JINR, Dubna, Moscow Region, Russia
	The Nuclotron-based Ion Collider fAcility (NICA) - accelerator complex is being constructed at JINR. It is aimed to the collider experiments with ions and protons and has to provide the ion-ion (Au+79) and ion-proton collision in the energy range of 1-4.5 GeV/amu and also polarized proton-proton and deuteron-deuteron collisions. Each of two collider ring has a racetrack shape with two bending arcs and two long straight sections. Beams are separated in vertical plane and come into collisions in two IPs. Dynamic aperture of the NICA collider has been studied for different parameters of the optics at IP. Effects of the fringe fields of structural elements are considered in the optimization of the collider lattice.
	Slides FRCAMH07 [4.547 MB]
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THCBSH04	The Monitoring of the Effects of Earth Surface Inclination With the Precision Laser Inclinometer for High Luminosity Colliders	luminosity, laser, monitoring, optics	210
	B. Di Girolamo, J. Gayde, D. Mergelkuhl, M. Schaumann, J. Wenninger CERN, Geneva, Switzerland N.S. Azaryan, Ju. Boudagov, V.V. Glagolev, M.V. Lyablin, G. Shirkov JINR, Dubna, Moscow Region, Russia G.V. Trubnikov JINR/VBLHEP, Dubna, Moscow region, Russia
	Earth surface movements, like earthquakes or industrial noise, can induce a degradation of particle accelerator instantaneous luminosity or even sudden beam losses. This report introduces the HL-LHC project and discusses the importance of monitoring the effects of earthquakes on the present LHC beam orbit and luminosity using a novel instrument, the Precision Laser Inclinometer (PLI). After a brief description of the instrument principles, a comparison of data from the PLI and from the LHC beam instrumentation in the event of earthquakes is given. The aim is to characterize the response of the accelerator to remote or nearby Earth surface movements. The first results from simulation in comparison with data are presented. The impact of vibrations on high luminosity small-sized beam colliders, as in High Luminosity LHC among many other future projects, the possible applications of the PLI instrument and ideas about possible feedback systems conclude the contribution.
	Slides THCBSH04 [13.317 MB]
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TUPSA001	Commissioning of e⁺/e⁻ Transfer Line from BINP Injection Complex to VEPP-2000 Facility	dipole, controls, injection, positron	213
	I.M. Zemlyansky, Yu. Aktershev, V.V. Anashin, A.V. Andrianov, A.M. Batrakov, O.V. Belikov, D.E. Berkaev, M.F. Blinov, B.A. Dovzhenko, F.A. Emanov, V.V. Gambaryan, V.A. Kiselev, I. Koop, A.A. Krasnov, I.A. Mikheev, D.A. Nikiforov, A.V. Otboev, A.V. Pavlenko, V.P. Prosvetov, V.V. Rashchenko, Yu. A. Rogovsky, A.V. Semenov, P.Yu. Shatunov, Y.M. Shatunov, D.B. Shwartz, A.A. Starostenko, S.S. Vasichev, V.D. Yudin, Yu.M. Zharinov BINP SB RAS, Novosibirsk, Russia A.A. Krasnov, A.V. Pavlenko, Yu. A. Rogovsky, D.B. Shwartz, A.A. Starostenko NSU, Novosibirsk, Russia
	Funding: The work is supported by the Ministry of Education and Science of the Russian Federation and by grant NSh-10088.2016.2. Commissioning of e⁺/e⁻ transfer line from Injection Complex to VEPP-2000 facility is done in 2016. Both electrons and positrons beams are injected to VEPP-2000 collider. The channel layout, lattice functions, magnetic elements, beam diagnostic system, vacuum system and control system are presented in this article. The details of commissioning process are also mentioned.
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WEPSB041	Stochastic Cooling System at NICA Project	pick-up, operation, kicker, luminosity	455
	I.V. Gorelyshev, A.O. Sidorin JINR/VBLHEP, Dubna, Moscow region, Russia N. Shurkhno, G.V. Trubnikov JINR, Dubna, Moscow Region, Russia
	Stochastic cooling system is one of the crucial elements for luminosity preservation at NICA accelerator-collider complex. The foundation of main parameters of the stochastic cooling system is provided. The preparatory experimental work for longitudinal stochastic cooling was performed at Nuclotron accelerator. The description of Nuclotron system components, adjustment algorithms and remote control is given.
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THPSC005	Magnetic Measurement System For the NICA Collider Dual Dipoles	dipole, booster, data-acquisition, power-supply	547
	M.M. Shandov, V.V. Borisov, A.V. Bychkov, A.M. Donyagin, O. Golubitsky, H.G. Khodzhibagiyan, S.A. Kostromin, M.M. Omelyanenko JINR, Dubna, Russia A.V. Shemchuk JINR/VBLHEP, Dubna, Moscow region, Russia
	NICA collider magnetic system consists of 80 dual dipole superconducting magnets. Measurement of magnetic field parameters is assumed for each collider magnets. This paper describes magnetic measurements methods and developing of magnetic measurements system.
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THPSC010	Magnetic Measurement System For The NICA Quadrupole Magnets	quadrupole, booster, superconducting-magnet, cryogenics	559
	A.V. Shemchuk JINR/VBLHEP, Dubna, Moscow region, Russia V.V. Borisov, A.V. Bychkov, A.M. Donyagin, O. Golubitsky, H.G. Khodzhibagiyan, S.A. Kostromin, M.M. Omelyanenko, M.M. Shandov JINR, Dubna, Moscow Region, Russia
	NICA booster magnetic system consists of 40 dipole and 48 quadrupole superconducting magnets. Measurement of magnetic field parameters is assumed for each booster magnets. The booster quadrupole is 0.45 m-long, 47.5 mm pole radius magnet with design similar to the Nuclotron type quadrupole magnet. Focusing and defocusing quadrupole magnets are jointed in doublets. They will produce fields up to 21.5 T/m. Two magnetic measurements system with tangential and radial coils arrays were developed and produced. This paper describes the magnetic measurements methods as well as the first results of the magnetic measurements.
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THPSC018	Achievement of Necessary Vacuum Conditions in the NICA Accelerator Complex	vacuum, booster, ion, cathode	575
	A.V. Smirnov, A.M. Bazanov, A.V. Butenko, A.R. Galimov, H.G. Khodzhibagiyan, A. Nesterov, A.N. Svidetelev, A. Tikhomirov JINR, Dubna, Moscow Region, Russia
	NICA is a new accelerator collider complex under construction at the Joint Institute for Nuclear Research in Dubna. The facility is aimed at providing collider experiments with heavy ions up to Gold 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 superconducting synchrotron Nuclotron, and a new superconducting collider consisting of two rings, each of about 500 m in circumference. Vacuum volumes of the accelerator booster and Nuclotron and the superconducting collider are divided into volumes of superconducting elements thermal enclosure and beam chambers. The beam chambers consist regular cold periods, which are at a temperature of 4.2K to 80K, and warm irregular gaps at room temperature. Operating pressure in the thermal enclosure vacuum volumes have to maintained in the range of 10^-7 to 10^-4 mbar, in the beam chamber cold and warm areas - not more than 2·10^-11 mbar. The requirements for materials, surface preparation conditions and the level of leakage in the vacuum volume are set out. The description of way to achievement and maintenance of the working vacuum in the NICA project are presented.
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THPSC056	Proposal to Symmetric Quench Detection at Superconducting Elements by Bridge Scheme Usage	detector, booster, superconductivity, acceleration	662
	E.V. Ivanov JINR, Dubna, Moscow Region, Russia A.O. Sidorin, A.L. Svetov JINR/VBLHEP, Dubna, Moscow region, Russia
	In the frame of the NICA project two new superconducting accelerators will be constructed - the Booster and the NICA collider. Specialized facility for manufacturing and testing of the SC magnets for the NICA and FAIR projects is under development at JINR. Proposal to quench detection system for these and similar facilities is described in this paper.
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THPSC057	Application of Model Independent Techniques at VEPP-2000 and SIS100	damping, betatron, electron, experiment	664
	D.V. Rabusov, Yu. A. Rogovsky BINP SB RAS, Novosibirsk, Russia
	In order to exploit an accelerator successfully all parameters should be set correctly. To check and fix errors in the accelerator lattice measurements of parameters of the betatron motion and measurements of optical functions of the accelerator lattice are used. Due to Model Independent Analysis it is possible to carry out measurements of the beta-function and the phase advance fast. Using NAFF technique lets us compute betatron tune with good precision. Limiting capabilities of the MIA at SIS100 project are discussed, the first results of the application of MIA and NAFF techniques at booster VEPP-5 and at collider VEPP-2000 are shown.
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THPSC060	The Longitudinal Distribution and Bunch Length Measurements at VEPP-2000 Collider	cavity, impedance, electron, detector	673
	Yu. A. Rogovsky, E. Perevedentsev, V. Volkov, Yu.M. Zharinov BINP SB RAS, Novosibirsk, Russia
	The paper describes the bunch length measurement system for VEPP-2000 collider, equiped with optical analysers based on LI-602 dissector, which provides permanent measurements of the longitudinal beam profile. Potential well distorsion lengthening was measured at different bunch currents for the energies below 500 MeV. First measurements reveals the presence of microwave instabilty with turbulent emittance growth. The thresholds of these processes was used to estimate the values of reactive part of the longitudinal impedance. Measured energy loss factors was compared with computer simulations for the RF cavity. All results will be discussed and further estimations will be given.
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Paper

Title

Other Keywords

Page

MOZMH01

CEPC-SppC Accelerator Status

positron, luminosity, proton, booster

1

J. Gao
IHEP, Beijing, People's Republic of China

In this talk we will give a bird view of the status Circular Electron Positron Collider (CEPC). The scientific goal and the collider design goal of CECP are described. The luminosity potentail of Super Proton-Proton Collider (SPPC) in the same tunnel of CEPC are also provided. The optimization of parameter designs for CEPC with different energies, machine lengthes, single ring and crab-waist collision partial double ring options, etc. have been given systimatically. The machine lattice design philosophy and conrete lattice design are given. The corresponding SC RF system designs corresponding to different machine options are presented. Key issues for technology R&D, possible time schedule and international collaboration are addressed.

Slides MOZMH01 [10.473 MB]

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TUYMH01

Status of the Future Circular Collider Study

hadron, lepton, luminosity, optics

34

M. Benedikt
CERN, Geneva, Switzerland

Following the 2013 update of the European Strategy for Particle Physics, the international Future Circular Collider (FCC) Study has been launched by CERN as host institute, to design an energy frontier hadron collider (FCC-hh) in a new 80-100 km tunnel with a centre-of-mass energy of about 100 TeV, an order of magnitude beyond the LHC's, as a long-term goal. The FCC study also includes the design of a 90-350 GeV high-luminosity lepton collider (FCC-ee) installed in the same tunnel, serving as Higgs, top and Z factory, as a potential intermediate step, as well as an electron-proton collider option (FCC-he). The physics cases for such machines will be assessed and concepts for experiments will be developed in time for the next update of the European Strategy for Particle Physics by the end of 2018. The presentation will summarize the status of machine designs and parameters and discuss the essential technical components to be developed in the frame of the FCC study. Key elements are superconducting accelerator-dipole magnets with a field of 16 T for the hadron collider and high-power, high-efficiency RF systems for the lepton collider. In addition the unprecedented beam power presents special challenges for the hadron collider for all aspects of beam handling and machine protection. First conclusions of geological investigations and implementation studies will be presented. The status of the FCC collaboration and the further planning for the study will be outlined.

Slides TUYMH01 [13.196 MB]

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TUYMH03

Recommissioning and Perspectives of VEPP-2000 Complex

luminosity, injection, detector, positron

39

Yu. A. Rogovsky, V.V. Anashin, D.E. Berkaev, A.S. Kasaev, E. Kenzhebulatov, I. Koop, A.A. Krasnov, G.Y. Kurkin, A.N. Kyrpotin, A.P. Lysenko, S.V. Motygin, E. Perevedentsev, V.P. Prosvetov, A.V. Semenov, A.I. Senchenko, P.Yu. Shatunov, Y.M. Shatunov, D.B. Shwartz, A.N. Skrinsky, I.M. Zemlyansky, Yu.M. Zharinov
BINP SB RAS, Novosibirsk, Russia
D.B. Shwartz
NSU, Novosibirsk, Russia

VEPP-2000 is electron-positron collider exploiting the novel concept of round colliding beams. After three seasons of data taking in the whole energy range of 160-1000 MeV per beam it was stopped in 2013 for injection chain upgrade. The linking to the new BINP source of intensive beams together with booster synchrotron modernization provides the drastic luminosity gain at top energy of VEPP-2000. Recomissioning status, fist results and perspectives of the VEPP-2000 complex will be presented.

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THCDMH02

Recent Optimized Design of ILC Cryomodule With Explosion Welding Technology

niobium, electron, cryomodule, linear-collider

141

B.M. Sabirov
JINR, Dubna, Moscow Region, Russia

Primary purpose of this experiment is the development of techniques to simplify and make cheaper the construction of the cryomodules. In the current ILC TDR design the helium vessel and the connected pipes are made of expensive titanium. JINR in association with INFN several designs for these transitions have been produced and studied during the last years. The results of measuring microhardness by Vickers microindentation are issued of ~3.8 GPa and the breaking strength was 375 MPa. Helium leak measurements revealed no leaks at a background leak rate of 0.4*10^-10 atm*cc/s. For imitation of use transition sample in real working position, connected with Nb cavity, Nb rings were joint with Nb pipe of samples by EBW. Superposition of all residual stresses may result plastic deformation, failure of welds, and consequently occurrence of a leak. Test result of thermocycles in LHe and in the LN ussued absence of leak at background leak rate ~0.5*10^-10 atm*cc/sec. The results showed the full eligibility of suggested design Nb+Ti+SS transition sample not for only Linear Collider, but for any cryogenic systems.

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THCDMH03

The Progress on Manufacturing and Testing of the SC Magnets for the NICA Booster Synchrotron

booster, dipole, superconducting-magnet, synchrotron

144

H.G. Khodzhibagiyan, N.N. Agapov, P.G. Akishin, V.V. Borisov, A.V. Bychkov, A.M. Donyagin, A.R. Galimov, O. Golubitsky, V. Karpinsky, B.Yu. Kondratiev, S.A. Korovkin, S.A. Kostromin, A.V. Kudashkin, G.L. Kuznetsov, D.N. Nikiforov, A.V. Shemchuk, S.A. Smirnov, A.Y. Starikov, G.V. Trubnikov
JINR, Dubna, Moscow Region, Russia

NICA is a new accelerator collider complex under construction at the Joint Institute for Nuclear Research in Dubna. 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^-2 s⁻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 is based on an iron-dominated "window frame"- type magnet with a hollow superconductor winding analogous to the Nuclotron magnet. The design of superconducting magnets for the NICA booster synchrotron is described. The progress of work on the manufacturing and testing of the magnets is discussed. The calculated and measured values of the characteristics of the magnets are presented. The status of the facility for serial test of superconducting magnets for the NICA and FAIR projects is described.

Slides THCDMH03 [8.068 MB]

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FRCAMH07

NICA Collider Lattice Optimization

quadrupole, ion, dipole, lattice

166

O.S. Kozlov, A.V. Butenko, H.G. Khodzhibagiyan, S.A. Kostromin, I.N. Meshkov, A.O. Sidorin, E. Syresin, G.V. Trubnikov
JINR, Dubna, Moscow Region, Russia

The Nuclotron-based Ion Collider fAcility (NICA) - accelerator complex is being constructed at JINR. It is aimed to the collider experiments with ions and protons and has to provide the ion-ion (Au+79) and ion-proton collision in the energy range of 1-4.5 GeV/amu and also polarized proton-proton and deuteron-deuteron collisions. Each of two collider ring has a racetrack shape with two bending arcs and two long straight sections. Beams are separated in vertical plane and come into collisions in two IPs. Dynamic aperture of the NICA collider has been studied for different parameters of the optics at IP. Effects of the fringe fields of structural elements are considered in the optimization of the collider lattice.

Slides FRCAMH07 [4.547 MB]

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THCBSH04

The Monitoring of the Effects of Earth Surface Inclination With the Precision Laser Inclinometer for High Luminosity Colliders

luminosity, laser, monitoring, optics

210

B. Di Girolamo, J. Gayde, D. Mergelkuhl, M. Schaumann, J. Wenninger
CERN, Geneva, Switzerland
N.S. Azaryan, Ju. Boudagov, V.V. Glagolev, M.V. Lyablin, G. Shirkov
JINR, Dubna, Moscow Region, Russia
G.V. Trubnikov
JINR/VBLHEP, Dubna, Moscow region, Russia

Earth surface movements, like earthquakes or industrial noise, can induce a degradation of particle accelerator instantaneous luminosity or even sudden beam losses. This report introduces the HL-LHC project and discusses the importance of monitoring the effects of earthquakes on the present LHC beam orbit and luminosity using a novel instrument, the Precision Laser Inclinometer (PLI). After a brief description of the instrument principles, a comparison of data from the PLI and from the LHC beam instrumentation in the event of earthquakes is given. The aim is to characterize the response of the accelerator to remote or nearby Earth surface movements. The first results from simulation in comparison with data are presented. The impact of vibrations on high luminosity small-sized beam colliders, as in High Luminosity LHC among many other future projects, the possible applications of the PLI instrument and ideas about possible feedback systems conclude the contribution.

Slides THCBSH04 [13.317 MB]

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TUPSA001

Commissioning of e⁺/e⁻ Transfer Line from BINP Injection Complex to VEPP-2000 Facility

dipole, controls, injection, positron

213

I.M. Zemlyansky, Yu. Aktershev, V.V. Anashin, A.V. Andrianov, A.M. Batrakov, O.V. Belikov, D.E. Berkaev, M.F. Blinov, B.A. Dovzhenko, F.A. Emanov, V.V. Gambaryan, V.A. Kiselev, I. Koop, A.A. Krasnov, I.A. Mikheev, D.A. Nikiforov, A.V. Otboev, A.V. Pavlenko, V.P. Prosvetov, V.V. Rashchenko, Yu. A. Rogovsky, A.V. Semenov, P.Yu. Shatunov, Y.M. Shatunov, D.B. Shwartz, A.A. Starostenko, S.S. Vasichev, V.D. Yudin, Yu.M. Zharinov
BINP SB RAS, Novosibirsk, Russia
A.A. Krasnov, A.V. Pavlenko, Yu. A. Rogovsky, D.B. Shwartz, A.A. Starostenko
NSU, Novosibirsk, Russia

Funding: The work is supported by the Ministry of Education and Science of the Russian Federation and by grant NSh-10088.2016.2.
Commissioning of e⁺/e⁻ transfer line from Injection Complex to VEPP-2000 facility is done in 2016. Both electrons and positrons beams are injected to VEPP-2000 collider. The channel layout, lattice functions, magnetic elements, beam diagnostic system, vacuum system and control system are presented in this article. The details of commissioning process are also mentioned.

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WEPSB041

Stochastic Cooling System at NICA Project

pick-up, operation, kicker, luminosity

455

I.V. Gorelyshev, A.O. Sidorin
JINR/VBLHEP, Dubna, Moscow region, Russia
N. Shurkhno, G.V. Trubnikov
JINR, Dubna, Moscow Region, Russia

Stochastic cooling system is one of the crucial elements for luminosity preservation at NICA accelerator-collider complex. The foundation of main parameters of the stochastic cooling system is provided. The preparatory experimental work for longitudinal stochastic cooling was performed at Nuclotron accelerator. The description of Nuclotron system components, adjustment algorithms and remote control is given.

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THPSC005

Magnetic Measurement System For the NICA Collider Dual Dipoles

dipole, booster, data-acquisition, power-supply

547

M.M. Shandov, V.V. Borisov, A.V. Bychkov, A.M. Donyagin, O. Golubitsky, H.G. Khodzhibagiyan, S.A. Kostromin, M.M. Omelyanenko
JINR, Dubna, Russia
A.V. Shemchuk
JINR/VBLHEP, Dubna, Moscow region, Russia

NICA collider magnetic system consists of 80 dual dipole superconducting magnets. Measurement of magnetic field parameters is assumed for each collider magnets. This paper describes magnetic measurements methods and developing of magnetic measurements system.

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THPSC010

Magnetic Measurement System For The NICA Quadrupole Magnets

quadrupole, booster, superconducting-magnet, cryogenics

559

A.V. Shemchuk
JINR/VBLHEP, Dubna, Moscow region, Russia
V.V. Borisov, A.V. Bychkov, A.M. Donyagin, O. Golubitsky, H.G. Khodzhibagiyan, S.A. Kostromin, M.M. Omelyanenko, M.M. Shandov
JINR, Dubna, Moscow Region, Russia

NICA booster magnetic system consists of 40 dipole and 48 quadrupole superconducting magnets. Measurement of magnetic field parameters is assumed for each booster magnets. The booster quadrupole is 0.45 m-long, 47.5 mm pole radius magnet with design similar to the Nuclotron type quadrupole magnet. Focusing and defocusing quadrupole magnets are jointed in doublets. They will produce fields up to 21.5 T/m. Two magnetic measurements system with tangential and radial coils arrays were developed and produced. This paper describes the magnetic measurements methods as well as the first results of the magnetic measurements.

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THPSC018

Achievement of Necessary Vacuum Conditions in the NICA Accelerator Complex

vacuum, booster, ion, cathode

575

A.V. Smirnov, A.M. Bazanov, A.V. Butenko, A.R. Galimov, H.G. Khodzhibagiyan, A. Nesterov, A.N. Svidetelev, A. Tikhomirov
JINR, Dubna, Moscow Region, Russia

NICA is a new accelerator collider complex under construction at the Joint Institute for Nuclear Research in Dubna. The facility is aimed at providing collider experiments with heavy ions up to Gold 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 superconducting synchrotron Nuclotron, and a new superconducting collider consisting of two rings, each of about 500 m in circumference. Vacuum volumes of the accelerator booster and Nuclotron and the superconducting collider are divided into volumes of superconducting elements thermal enclosure and beam chambers. The beam chambers consist regular cold periods, which are at a temperature of 4.2K to 80K, and warm irregular gaps at room temperature. Operating pressure in the thermal enclosure vacuum volumes have to maintained in the range of 10^-7 to 10^-4 mbar, in the beam chamber cold and warm areas - not more than 2·10^-11 mbar. The requirements for materials, surface preparation conditions and the level of leakage in the vacuum volume are set out. The description of way to achievement and maintenance of the working vacuum in the NICA project are presented.

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THPSC056

Proposal to Symmetric Quench Detection at Superconducting Elements by Bridge Scheme Usage

detector, booster, superconductivity, acceleration

662

E.V. Ivanov
JINR, Dubna, Moscow Region, Russia
A.O. Sidorin, A.L. Svetov
JINR/VBLHEP, Dubna, Moscow region, Russia

In the frame of the NICA project two new superconducting accelerators will be constructed - the Booster and the NICA collider. Specialized facility for manufacturing and testing of the SC magnets for the NICA and FAIR projects is under development at JINR. Proposal to quench detection system for these and similar facilities is described in this paper.

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THPSC057

Application of Model Independent Techniques at VEPP-2000 and SIS100

damping, betatron, electron, experiment

664

D.V. Rabusov, Yu. A. Rogovsky
BINP SB RAS, Novosibirsk, Russia

In order to exploit an accelerator successfully all parameters should be set correctly. To check and fix errors in the accelerator lattice measurements of parameters of the betatron motion and measurements of optical functions of the accelerator lattice are used. Due to Model Independent Analysis it is possible to carry out measurements of the beta-function and the phase advance fast. Using NAFF technique lets us compute betatron tune with good precision. Limiting capabilities of the MIA at SIS100 project are discussed, the first results of the application of MIA and NAFF techniques at booster VEPP-5 and at collider VEPP-2000 are shown.

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THPSC060

The Longitudinal Distribution and Bunch Length Measurements at VEPP-2000 Collider

cavity, impedance, electron, detector

673

Yu. A. Rogovsky, E. Perevedentsev, V. Volkov, Yu.M. Zharinov
BINP SB RAS, Novosibirsk, Russia

The paper describes the bunch length measurement system for VEPP-2000 collider, equiped with optical analysers based on LI-602 dissector, which provides permanent measurements of the longitudinal beam profile. Potential well distorsion lengthening was measured at different bunch currents for the energies below 500 MeV. First measurements reveals the presence of microwave instabilty with turbulent emittance growth. The thresholds of these processes was used to estimate the values of reactive part of the longitudinal impedance. Measured energy loss factors was compared with computer simulations for the RF cavity. All results will be discussed and further estimations will be given.

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