RuPAC2016 - List of Keywords (cryogenics)

Paper	Title	Other Keywords	Page
WEPSB060	Development of Positron Annihilation Spectroscopy at the LEPTA Facility	positron, target, electron, acceleration	499
	A.A. Sidorin, E.V. Ahmanova, M.K. Eseev, A.G. Kobets, I.N. Meshkov, O. Orlov JINR, Dubna, Moscow Region, Russia M.K. Eseev NAFU, Arkhangelsk, Russia V.I. Hilinov, P. Horodek, I.N. Meshkov, K. Siemek JINR/DLNP, Dubna, Moscow region, Russia P. Horodek, K. Siemek IFJ-PAN, Kraków, Poland A.G. Kobets IERT, Kharkov, Ukraine
	The report aims to present the status of the development of the LEPTA facility for further enhancement of the positron annihilation spectroscopy (PAS) method application at the LEPTA facility. The research in solid state physics performed currently is based on slow monochromatic positron flux from the injector and Doppler PAS. The new positron transfer channel being under construction at the LEPTA allows us to develop more advanced PAS method - so called 'Positron Annihilation life-time spectroscopy' (PALS). It will enrich significantly the research program at the LEPTA. PAS method is sensitive to microdefects in solids. A pair of gamma quanta, born as a result of positron-electron annihilation carries information about the density of the defects that have the size less than 10 nm and are located at the depth from the surface of the material depending on the positron energy. New monochromatic positron source construction supplied with the autonomous cooling system with emitter-source of the activity of 30 mCi (iThemba LABS production) and new positron transfer channel are presented in report.
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WEPSB077	High Speed Cryogenic Monodisperse Targets for High Intensity Cyclic and Linear Accelerators	target, vacuum, controls, experiment	532
	A.V. Bukharov, E.V. Vishnevskii MPEI, Moscow, Russia
	The basic possibility of creation of high speed cryogenic monodisperse targets is shown. According to calculations at input of thin liquid cryogenic jets with a velocity of bigger 100 m/s in vacuum the jets don't manage to freeze at distance to 1 mm and can be broken into monodisperse drops. Drops due to evaporation are cooled and become granules. High speed cryogenic monodisperse targets have the following advantages: direct input in vacuum (there is no need for a chamber of a triple point chamber and sluices), it is possible to use the equipment of a cluster target, it is possible to receive targets with a diameter of D < 20 mkm from various cryogenic liquids (H2, D2, N2, Ar) with dispersion less than 1%, the high velocity of monodisperse granules(> 100m/s), exact synchronization of the target hitting moment in a beam with the moment of sensors turning on
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THPSC010	Magnetic Measurement System For The NICA Quadrupole Magnets	quadrupole, booster, collider, superconducting-magnet	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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THPSC012	First Experience of the HTS-II Dipole Type Magnets Development at NIIEFA	dipole, operation, permanent-magnet, controls	563
	I.Yu. Rodin, V.M. Amoskov, E.N. Andreev, A.A. Dyomina, V.A. Glukhih, V.P. Kukhtin, E.A. Lamzin, E.R. Zapretilina NIIEFA, St. Petersburg, Russia V.A. Belyakov, S.E. Sytchevsky Saint Petersburg State University, Saint Petersburg, Russia S.V. Samoilenkov JSC SuperOx, Moscow, Russia
	The possibility to design, manufacture and test the dipole type magnets from the second generation high-temperature superconductors (HTS-II like YBCO and ReBCO) was demonstrated at the Efremov Institute. The paper describes available computation techniques, design approaches and manufacturing equipment, which could be used to meet the modern requirements for the magnets of accelerators, research equipment, magnet levitation systems etc. The manufacturing equipment comprises the winding lines and insulating devices to provide different configurations and insulating schemes of coils. Additionally, an equipment to produce the Roebel-cable for high current applications was procured and put in operation. As an example, the results of development of the HTC-II dipole type magnets for the different kind dummies of maglev systems are presented. The ReBCO tapes produced by JSC "SuperOx" (Moscow) were used. Up to 0.5 T magnets cooled by liquid nitrogen were designed as a part of levitation system consists of permanent, HTS-II and normal conductive magnets. Comprehensive tests verified the computation results and demonstrated the readiness to develop HTS-II dipole magnets under the customer requirements.
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Paper

Title

Other Keywords

Page

WEPSB060

Development of Positron Annihilation Spectroscopy at the LEPTA Facility

positron, target, electron, acceleration

499

A.A. Sidorin, E.V. Ahmanova, M.K. Eseev, A.G. Kobets, I.N. Meshkov, O. Orlov
JINR, Dubna, Moscow Region, Russia
M.K. Eseev
NAFU, Arkhangelsk, Russia
V.I. Hilinov, P. Horodek, I.N. Meshkov, K. Siemek
JINR/DLNP, Dubna, Moscow region, Russia
P. Horodek, K. Siemek
IFJ-PAN, Kraków, Poland
A.G. Kobets
IERT, Kharkov, Ukraine

The report aims to present the status of the development of the LEPTA facility for further enhancement of the positron annihilation spectroscopy (PAS) method application at the LEPTA facility. The research in solid state physics performed currently is based on slow monochromatic positron flux from the injector and Doppler PAS. The new positron transfer channel being under construction at the LEPTA allows us to develop more advanced PAS method - so called 'Positron Annihilation life-time spectroscopy' (PALS). It will enrich significantly the research program at the LEPTA. PAS method is sensitive to microdefects in solids. A pair of gamma quanta, born as a result of positron-electron annihilation carries information about the density of the defects that have the size less than 10 nm and are located at the depth from the surface of the material depending on the positron energy. New monochromatic positron source construction supplied with the autonomous cooling system with emitter-source of the activity of 30 mCi (iThemba LABS production) and new positron transfer channel are presented in report.

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WEPSB077

High Speed Cryogenic Monodisperse Targets for High Intensity Cyclic and Linear Accelerators

target, vacuum, controls, experiment

532

A.V. Bukharov, E.V. Vishnevskii
MPEI, Moscow, Russia

The basic possibility of creation of high speed cryogenic monodisperse targets is shown. According to calculations at input of thin liquid cryogenic jets with a velocity of bigger 100 m/s in vacuum the jets don't manage to freeze at distance to 1 mm and can be broken into monodisperse drops. Drops due to evaporation are cooled and become granules. High speed cryogenic monodisperse targets have the following advantages: direct input in vacuum (there is no need for a chamber of a triple point chamber and sluices), it is possible to use the equipment of a cluster target, it is possible to receive targets with a diameter of D < 20 mkm from various cryogenic liquids (H2, D2, N2, Ar) with dispersion less than 1%, the high velocity of monodisperse granules(> 100m/s), exact synchronization of the target hitting moment in a beam with the moment of sensors turning on

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THPSC010

Magnetic Measurement System For The NICA Quadrupole Magnets

quadrupole, booster, collider, superconducting-magnet

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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reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPSC012

First Experience of the HTS-II Dipole Type Magnets Development at NIIEFA

dipole, operation, permanent-magnet, controls

563

I.Yu. Rodin, V.M. Amoskov, E.N. Andreev, A.A. Dyomina, V.A. Glukhih, V.P. Kukhtin, E.A. Lamzin, E.R. Zapretilina
NIIEFA, St. Petersburg, Russia
V.A. Belyakov, S.E. Sytchevsky
Saint Petersburg State University, Saint Petersburg, Russia
S.V. Samoilenkov
JSC SuperOx, Moscow, Russia

The possibility to design, manufacture and test the dipole type magnets from the second generation high-temperature superconductors (HTS-II like YBCO and ReBCO) was demonstrated at the Efremov Institute. The paper describes available computation techniques, design approaches and manufacturing equipment, which could be used to meet the modern requirements for the magnets of accelerators, research equipment, magnet levitation systems etc. The manufacturing equipment comprises the winding lines and insulating devices to provide different configurations and insulating schemes of coils. Additionally, an equipment to produce the Roebel-cable for high current applications was procured and put in operation. As an example, the results of development of the HTC-II dipole type magnets for the different kind dummies of maglev systems are presented. The ReBCO tapes produced by JSC "SuperOx" (Moscow) were used. Up to 0.5 T magnets cooled by liquid nitrogen were designed as a part of levitation system consists of permanent, HTS-II and normal conductive magnets. Comprehensive tests verified the computation results and demonstrated the readiness to develop HTS-II dipole magnets under the customer requirements.

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reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)