RuPAC2021 - Classification: SR sources and FELs

Paper	Title	Page
MOY04	Status of the Novosibirsk Fourth-Generation Light Source SKIF
	A.V. Bogomyagkov BINP SB RAS, Novosibirsk, Russia
	SKIF is a fourth-generation light source under construction in Novosibirsk. The paper presents status of 476 m long storage ring with 72 pm natural emittance at 3 GeV beam energy, linear and nonlinear beam dynamics, results of Touschek beam lifetime and intrabeam scattering studies, parameters of insertion devices and achieved brightness.
	Slides MOY04 [10.724 MB]
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUC01	Status of the Kurchatov Synchrotron Radiation Source	55
	A.G. Valentinov, A. Belkov, Ye. Fomin, E.V. Kaportsev, V. Korchuganov, Y.V. Krylov, V.I. Moiseev, K. Moseev, N.I. Moseiko, D.G. Odintsov, S.G. Pesterev, A.S. Smygacheva, A.I. Stirin, V.A. Ushakov NRC, Moscow, Russia
	The Kurchatov synchrotron radiation source goes on to operate in the range of synchrotron radiation from VUV up to hard X-ray. An electron current achieves 150 mA at 2.5 GeV, up to 12 experimental stations may function simultaneously. Improvement of the facility according Federal Program of KSRS modernization is in progress. Two 3 Tesla superconducting wigglers have been installed at main ring at 2019. They were tested with small electron beam current at 2020-2021. Wigglers’ influence on beam parameters is much closed to calculated value. Vacuum system has been upgraded at 2020. In 2021 control system will be completely modified. Manufactoring of third 181 MHz RF generator, new preliminary amplification cascades and new waveguides for all three generators continues in Budker Institute (Novosibirsk). Preparation of great modernization of the whole facility according Federal Program for science infrastructure development has been started.
	Slides TUC01 [17.060 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUC01
About •	Received ※ 24 September 2021 — Accepted ※ 27 September 2021 — Issued ※ 09 October 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUC02	Concept of a New Kurchatov Synchrotron Radiation Source
	V. Korchuganov, Ye. Fomin, M.V. Kovalchuk, A.S. Smygacheva, V.A. Ushakov, A.G. Valentinov NRC, Moscow, Russia S.M. Polozov MEPhI, Moscow, Russia
	The Kurchatov source of SR has started a project for an upgrade of the accelerator complex based on the existing infrastructure. Instead of the operating 2.5 GeV SR source with a natural emittance of 98 nm-rad, a new 2.5 GeV SR source with a natural emittance less than 3 nm-rad will be built. To ensure its "continuous" operation, a new injection complex (top-up energy injection scheme) - 0.2-2.5 GeV booster synchrotron and 200 MeV linac with transfer lines will be installed. The report gives the concept of the new complex. Also, special attention is paid to the main storage ring operation with insertion devices and problems of electron beam injection in the storage ring at the multi-bunch and single-bunch modes.
	Slides TUC02 [5.979 MB]
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUC03	Development of Powerful Long-Pulse THz-Band FEL Driven by Linear Induction Accelerator	58
	N.Yu. Peskov, V.I. Belousov, N.S. Ginzburg, D.I. Sobolev, V.Yu. Zaslavsky IAP/RAS, Nizhny Novgorod, Russia A.V. Arzhannikov, D.A. Nikiforov, E.S. Sandalov, S.L. Sinitsky, D.I. Skovorodin, A.A. Starostenko, K.I. Zhivankov BINP SB RAS, Novosibirsk, Russia
	Funding: This work is supported by the Russian Science Foundation (grant #19-12-00212). Project of high-power long-pulse THz-band FEL is under development in collaboration between BINP (Novosibirsk) and IAP RAS (N.Novgorod) driven by the linac LIU 5 - 20 MeV / 2 kA / 200 ns. The aim of this project is to achieve a record sub-GW power level and pulse energy content up to 10 - 100 J at THz frequencies. Principal problems in realization of this generator include: formation of the electron beam with parameters acceptable for operation in the short-wavelength ranges, development of undulator for pumping operating transverse oscillations in the beam, and elaboration of electrodynamic system that can provide stable narrow-band oscillation regime in a strongly oversized interaction space. Initial proof-of-principle experiments are planned to start at the LIU-5 accelerator in the 0.3 THz frequency range, with prospects of transition to 0.6 THz range and higher frequencies after positive results would be demonstrated. In the report, the design parameters of the FEL project are discussed. Results of electron-optical experiments on the beam formation are presented. Structural elements of the FEL magnetic system based on helical undulator and a guide solenoid that provides intense beam transportation were elaborated. An electrodynamic system was proposed exploiting advanced Bragg structures, which have significantly improved selective properties. Structures of such type were designed with the diameter of 20 and 40 wavelengths for operation in specified frequency ranges.
	Slides TUC03 [4.780 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUC03
About •	Received ※ 24 September 2021 — Revised ※ 25 September 2021 — Accepted ※ 27 September 2021 — Issued ※ 28 September 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSB22	Wakefield Undulator Based on a Sinusoidal Dielectric Waveguide	274
	I.L. Sheinman, O.S. Alekseeva LETI, Saint-Petersburg, Russia
	The idea of creating an undulator based on the wake principle by passing a beam through a sinusoidal dielectric waveguide is proposed. A numerical analysis of the dynamics of a short electron beam in a wake undulator on a bending wave of a waveguide with a dielectric filling is carried out. The possibility of reducing the instability of the beam by choosing the initial phase of the flexural wave and the initial transverse positioning of the beam is considered.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB22
About •	Received ※ 19 September 2021 — Accepted ※ 20 September 2021 — Issued ※ 28 September 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSB23	Laser Undulator as a Compact X-Ray Source: State of the Art and New Trends
	A.A. Tishchenko MEPhI, Moscow, Russia A.A. Tishchenko BNRU, Belgorod, Russia A.A. Tishchenko NRC, Moscow, Russia
	Funding: This work is performed within the project supported by the Russian Foundation for Basic Research (RFBR), grant # 19-29-12036. Thomson (or, in the quantum regime, Compton) backscattering occurs when a beam of charged par-ticles collides with the laser pulse, and so the electrons oscillate in the periodic field of the electromag-netic wave, what is called light or laser undulator. This radiation source is a modern and promising in-strument for generation of X-ray radiation. While Thomson sources are compact and comparatively cheap, their main characteristics (number of photons per pulse, energy bandwidth, pulse duration, emit-tance etc.) can be sufficient for applications in phase contrast and K-edge imaging, cancer therapy, computed tomography and so on. In this report we describe briefly the current state of development of such sources. We discuss the theoretical approach describing the interaction of electron beams with electromagnetic waves, advantages and disadvantages of linear and nonlinear regimes, coherent effects in radiation from short bunches, including sub-picosecond ones, as well as the new trends in this field, as a growing interest to the radiation of attosecond relativistic electron bunches.
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSB26	Lattice Options With Reverse Bending Magnets for USSR HMBA Storage Ring	280
	V.S. Dyubkov MEPhI, Moscow, Russia V.S. Dyubkov, T. Kulevoy NRC, Moscow, Russia T. Kulevoy, E.D. Tsyplakov ITEP, Moscow, Russia E.D. Tsyplakov MIPT, Dolgoprudniy, Moscow Region, Russia
	The 4th generation light source, the Ultimate Source of Synchrotron Radiation (USSR) is under design, to be built in Moscow region (Russia). It will be a 6 GeV and about 1100 m circumference storage ring synchrotron. Baseline lattice of the USSR for now is a scaled version of the ESRF-EBS Hybrid Multi-Bend Achromat (HMBA) lattice that was successfully commissioned in 2020. Its natural horizontal electron beam emittance is about 70 pm·rad. Further reduction of beam emittance can be achieved with the use of reverse bending magnets. The evolution of the envisaged lattices for the USSR storage ring, including options with reverse bends will be presented.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB26
About •	Received ※ 24 September 2021 — Revised ※ 25 September 2021 — Accepted ※ 29 September 2021 — Issued ※ 18 October 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSB28	X-ray Thomson Inverse Scattering from Periodically Modulated Laser Pulses	283
	D.Yu. Sergeeva, A.A. Tishchenko MEPhI, Moscow, Russia D.Yu. Sergeeva BelSU/LRP, Belgorod, Russia D.Yu. Sergeeva, A.A. Tishchenko NRC, Moscow, Russia A.A. Tishchenko BNRU, Belgorod, Russia
	Funding: This work is performed within the project supported by the Russian Foundation for Basic Research (RFBR), grant # 19-29-12036 Being a compact source of x-rays based on the Thomson backscattering Thomson source has potential to be used in medicine and biology and in other area where narrow band x-ray beams are essential. We suggest and investigate theoretically the idea to use laser pulses modulated with a short period in Thomson backscattering. The coherent radiation is obtained with intensity proportional to the squared number of micro-pulses in the whole laser pulse.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB28
About •	Received ※ 23 September 2021 — Accepted ※ 29 September 2021 — Issued ※ 21 October 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSB29	Geant4 for Inverse Compton Radiation Source Simulations	286
	A.A. Savchenko, D.Yu. Sergeeva, A.A. Tishchenko MEPhI, Moscow, Russia A.A. Savchenko, D.Yu. Sergeeva, A.A. Tishchenko NRC, Moscow, Russia A.A. Savchenko, A.A. Tishchenko BNRU, Belgorod, Russia D.Yu. Sergeeva BelSU/LRP, Belgorod, Russia
	Funding: This work was supported by the RFBR grant 19-29-12036. Compton backscattering* is a promising mechanism for engineering of a bright, compact and versatile X-ray source: with dimensions being significantly smaller, the brightness of this source is comparable with that of synchrotron radiation. Nowadays, active researches are underway on various aspects of this phenomenon aiming at increasing of radiation intensity and quality. In modern science, such kind of research is necessarily accompanied by the computer simulations. In this report, we are talking about creation and implementation of the Compton backscattering module into the Geant4 package, which is the leading simulation toolkit in high-energy physics, accelerator physics, medical physics, and space studies. Created module of Compton backscattering has been implemented as a discrete physical process and operates with a fixed light target (a virtual volume with the properties of a laser beam), with which a beam of charged particles interacts. Such a description allows user to flexibly change necessary parameters depending on the problem being solved, which opens up new possibilities for using Geant4 in the studied area. K.T. Phuoc et al., Nat. Photonics 6, 308 (2012). A. Ovodenko et al., Appl. Phys. Lett. 109, 253504 (2016). * S. Agostinelli et al., Nucl. Instrum. Meth. A 506, 250 (2003).
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB29
About •	Received ※ 17 September 2021 — Revised ※ 22 September 2021 — Accepted ※ 23 September 2021 — Issued ※ 02 October 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSB32	Emission of Photons at the Interaction of a High-Energy Positron Beam with a Periodically Deformed Crystal	289
	A.A. Yanovich, A.G. Afonin, G.I. Britvich, M.Yu. Chesnokov, Y.A. Chesnokov, A.A. Durum, M.Yu. Kostin, I.S. Lobanov, V.I. Pitalev, I.V. Poluektov, Yu.E. Sandomirskiy IHEP, Moscow Region, Russia
	Funding: Russian science foundation (grant 17-12-01532) Periodically deformed crystals have long attracted at-tention as "crystalline undulators". In the experi-ment carried out at the U-70 accelerator, the radiation of positrons moving in a periodically deformed crystal was observed. Experimental evidence has been obtained for an undulator peak in a radiation spectrum, which is quali-tatively consistent with calculations. It is shown that most of the emitted energy is due to hard photons with energies of tens of MeV as a result of channeling and reflection of particles, whose spectral density is several times higher than the radiation in an amorphous target.
	Poster TUPSB32 [0.864 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB32
About •	Received ※ 06 September 2021 — Accepted ※ 10 September 2021 — Issued ※ 17 September 2021
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TUPSB33	2.5 GeV Booster Synchrotron for a New Kurchatov Synchrotron Radiation Source	293
	A.S. Smygacheva, Ye. Fomin, V. Korchuganov, V.A. Ushakov, A.G. Valentinov NRC, Moscow, Russia
	The Project of complete modernization of the current accelerator complex is in progress in the NRC «Kurchatov Institute». A new booster synchrotron is a part of the injection complex for a new 3-d generation synchrotron light source. The booster has to ensure reliable and stable operation of the upgraded main storage ring. The paper presents the final design of the new booster synchrotron and its main parameters.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB33
About •	Received ※ 22 September 2021 — Accepted ※ 23 September 2021 — Issued ※ 16 October 2021
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TUPSB34	New Lattice Design for Kurchatov Synchrotron Radiation Source	297
	Ye. Fomin, V. Korchuganov NRC, Moscow, Russia
	Funding: The reported study was partially funded by RFBR, project number 19-29-12039 Nowadays the upgrade project of the 2nd generation synchrotron radiation source operating at NRC Kurchatov Institute has been ongoing. The main aim of the project is to create a new synchrotron radiation source with the same 124 m circumference and providing synchrotron radiation properties inherent to the 3rd generation sources (emittance ~ 3 nm·rad). The new machine will consist of new storage ring with 2.5 GeV electron energy, full energy booster synchrotron and 0.2 GeV linac. The mandatory requirement for the project is to keep all currently operating beamlines. In this article we present the design challenges and approaches for this machine, the conceptional design and baseline lattice.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB34
About •	Received ※ 22 September 2021 — Revised ※ 29 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 20 October 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

MOY04

Status of the Novosibirsk Fourth-Generation Light Source SKIF

A.V. Bogomyagkov
BINP SB RAS, Novosibirsk, Russia

SKIF is a fourth-generation light source under construction in Novosibirsk. The paper presents status of 476 m long storage ring with 72 pm natural emittance at 3 GeV beam energy, linear and nonlinear beam dynamics, results of Touschek beam lifetime and intrabeam scattering studies, parameters of insertion devices and achieved brightness.

Slides MOY04 [10.724 MB]

Cite •

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

TUC01

Status of the Kurchatov Synchrotron Radiation Source

55

A.G. Valentinov, A. Belkov, Ye. Fomin, E.V. Kaportsev, V. Korchuganov, Y.V. Krylov, V.I. Moiseev, K. Moseev, N.I. Moseiko, D.G. Odintsov, S.G. Pesterev, A.S. Smygacheva, A.I. Stirin, V.A. Ushakov
NRC, Moscow, Russia

The Kurchatov synchrotron radiation source goes on to operate in the range of synchrotron radiation from VUV up to hard X-ray. An electron current achieves 150 mA at 2.5 GeV, up to 12 experimental stations may function simultaneously. Improvement of the facility according Federal Program of KSRS modernization is in progress. Two 3 Tesla superconducting wigglers have been installed at main ring at 2019. They were tested with small electron beam current at 2020-2021. Wigglers’ influence on beam parameters is much closed to calculated value. Vacuum system has been upgraded at 2020. In 2021 control system will be completely modified. Manufactoring of third 181 MHz RF generator, new preliminary amplification cascades and new waveguides for all three generators continues in Budker Institute (Novosibirsk). Preparation of great modernization of the whole facility according Federal Program for science infrastructure development has been started.

Slides TUC01 [17.060 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUC01

About •

Received ※ 24 September 2021 — Accepted ※ 27 September 2021 — Issued ※ 09 October 2021

Cite •

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

TUC02

Concept of a New Kurchatov Synchrotron Radiation Source

V. Korchuganov, Ye. Fomin, M.V. Kovalchuk, A.S. Smygacheva, V.A. Ushakov, A.G. Valentinov
NRC, Moscow, Russia
S.M. Polozov
MEPhI, Moscow, Russia

The Kurchatov source of SR has started a project for an upgrade of the accelerator complex based on the existing infrastructure. Instead of the operating 2.5 GeV SR source with a natural emittance of 98 nm-rad, a new 2.5 GeV SR source with a natural emittance less than 3 nm-rad will be built. To ensure its "continuous" operation, a new injection complex (top-up energy injection scheme) - 0.2-2.5 GeV booster synchrotron and 200 MeV linac with transfer lines will be installed. The report gives the concept of the new complex. Also, special attention is paid to the main storage ring operation with insertion devices and problems of electron beam injection in the storage ring at the multi-bunch and single-bunch modes.

Slides TUC02 [5.979 MB]

Cite •

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

TUC03

Development of Powerful Long-Pulse THz-Band FEL Driven by Linear Induction Accelerator

58

N.Yu. Peskov, V.I. Belousov, N.S. Ginzburg, D.I. Sobolev, V.Yu. Zaslavsky
IAP/RAS, Nizhny Novgorod, Russia
A.V. Arzhannikov, D.A. Nikiforov, E.S. Sandalov, S.L. Sinitsky, D.I. Skovorodin, A.A. Starostenko, K.I. Zhivankov
BINP SB RAS, Novosibirsk, Russia

Funding: This work is supported by the Russian Science Foundation (grant #19-12-00212).
Project of high-power long-pulse THz-band FEL is under development in collaboration between BINP (Novosibirsk) and IAP RAS (N.Novgorod) driven by the linac LIU 5 - 20 MeV / 2 kA / 200 ns. The aim of this project is to achieve a record sub-GW power level and pulse energy content up to 10 - 100 J at THz frequencies. Principal problems in realization of this generator include: formation of the electron beam with parameters acceptable for operation in the short-wavelength ranges, development of undulator for pumping operating transverse oscillations in the beam, and elaboration of electrodynamic system that can provide stable narrow-band oscillation regime in a strongly oversized interaction space. Initial proof-of-principle experiments are planned to start at the LIU-5 accelerator in the 0.3 THz frequency range, with prospects of transition to 0.6 THz range and higher frequencies after positive results would be demonstrated. In the report, the design parameters of the FEL project are discussed. Results of electron-optical experiments on the beam formation are presented. Structural elements of the FEL magnetic system based on helical undulator and a guide solenoid that provides intense beam transportation were elaborated. An electrodynamic system was proposed exploiting advanced Bragg structures, which have significantly improved selective properties. Structures of such type were designed with the diameter of 20 and 40 wavelengths for operation in specified frequency ranges.

Slides TUC03 [4.780 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUC03

About •

Received ※ 24 September 2021 — Revised ※ 25 September 2021 — Accepted ※ 27 September 2021 — Issued ※ 28 September 2021

Cite •

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

TUPSB22

Wakefield Undulator Based on a Sinusoidal Dielectric Waveguide

274

I.L. Sheinman, O.S. Alekseeva
LETI, Saint-Petersburg, Russia

The idea of creating an undulator based on the wake principle by passing a beam through a sinusoidal dielectric waveguide is proposed. A numerical analysis of the dynamics of a short electron beam in a wake undulator on a bending wave of a waveguide with a dielectric filling is carried out. The possibility of reducing the instability of the beam by choosing the initial phase of the flexural wave and the initial transverse positioning of the beam is considered.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB22

About •

Received ※ 19 September 2021 — Accepted ※ 20 September 2021 — Issued ※ 28 September 2021

Cite •

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

TUPSB23

Laser Undulator as a Compact X-Ray Source: State of the Art and New Trends

A.A. Tishchenko
MEPhI, Moscow, Russia
A.A. Tishchenko
BNRU, Belgorod, Russia
A.A. Tishchenko
NRC, Moscow, Russia

Funding: This work is performed within the project supported by the Russian Foundation for Basic Research (RFBR), grant # 19-29-12036.
Thomson (or, in the quantum regime, Compton) backscattering occurs when a beam of charged par-ticles collides with the laser pulse, and so the electrons oscillate in the periodic field of the electromag-netic wave, what is called light or laser undulator. This radiation source is a modern and promising in-strument for generation of X-ray radiation. While Thomson sources are compact and comparatively cheap, their main characteristics (number of photons per pulse, energy bandwidth, pulse duration, emit-tance etc.) can be sufficient for applications in phase contrast and K-edge imaging, cancer therapy, computed tomography and so on. In this report we describe briefly the current state of development of such sources. We discuss the theoretical approach describing the interaction of electron beams with electromagnetic waves, advantages and disadvantages of linear and nonlinear regimes, coherent effects in radiation from short bunches, including sub-picosecond ones, as well as the new trends in this field, as a growing interest to the radiation of attosecond relativistic electron bunches.

Cite •

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

TUPSB26

Lattice Options With Reverse Bending Magnets for USSR HMBA Storage Ring

280

V.S. Dyubkov
MEPhI, Moscow, Russia
V.S. Dyubkov, T. Kulevoy
NRC, Moscow, Russia
T. Kulevoy, E.D. Tsyplakov
ITEP, Moscow, Russia
E.D. Tsyplakov
MIPT, Dolgoprudniy, Moscow Region, Russia

The 4th generation light source, the Ultimate Source of Synchrotron Radiation (USSR) is under design, to be built in Moscow region (Russia). It will be a 6 GeV and about 1100 m circumference storage ring synchrotron. Baseline lattice of the USSR for now is a scaled version of the ESRF-EBS Hybrid Multi-Bend Achromat (HMBA) lattice that was successfully commissioned in 2020. Its natural horizontal electron beam emittance is about 70 pm·rad. Further reduction of beam emittance can be achieved with the use of reverse bending magnets. The evolution of the envisaged lattices for the USSR storage ring, including options with reverse bends will be presented.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB26

About •

Received ※ 24 September 2021 — Revised ※ 25 September 2021 — Accepted ※ 29 September 2021 — Issued ※ 18 October 2021

Cite •

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

TUPSB28

X-ray Thomson Inverse Scattering from Periodically Modulated Laser Pulses

283

D.Yu. Sergeeva, A.A. Tishchenko
MEPhI, Moscow, Russia
D.Yu. Sergeeva
BelSU/LRP, Belgorod, Russia
D.Yu. Sergeeva, A.A. Tishchenko
NRC, Moscow, Russia
A.A. Tishchenko
BNRU, Belgorod, Russia

Funding: This work is performed within the project supported by the Russian Foundation for Basic Research (RFBR), grant # 19-29-12036
Being a compact source of x-rays based on the Thomson backscattering Thomson source has potential to be used in medicine and biology and in other area where narrow band x-ray beams are essential. We suggest and investigate theoretically the idea to use laser pulses modulated with a short period in Thomson backscattering. The coherent radiation is obtained with intensity proportional to the squared number of micro-pulses in the whole laser pulse.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB28

About •

Received ※ 23 September 2021 — Accepted ※ 29 September 2021 — Issued ※ 21 October 2021

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

TUPSB29

Geant4 for Inverse Compton Radiation Source Simulations

286

A.A. Savchenko, D.Yu. Sergeeva, A.A. Tishchenko
MEPhI, Moscow, Russia
A.A. Savchenko, D.Yu. Sergeeva, A.A. Tishchenko
NRC, Moscow, Russia
A.A. Savchenko, A.A. Tishchenko
BNRU, Belgorod, Russia
D.Yu. Sergeeva
BelSU/LRP, Belgorod, Russia

Funding: This work was supported by the RFBR grant 19-29-12036.
Compton backscattering* is a promising mechanism for engineering of a bright, compact and versatile X-ray source: with dimensions being significantly smaller, the brightness of this source is comparable with that of synchrotron radiation. Nowadays, active researches are underway on various aspects of this phenomenon** aiming at increasing of radiation intensity and quality. In modern science, such kind of research is necessarily accompanied by the computer simulations. In this report, we are talking about creation and implementation of the Compton backscattering module into the Geant4 package***, which is the leading simulation toolkit in high-energy physics, accelerator physics, medical physics, and space studies. Created module of Compton backscattering has been implemented as a discrete physical process and operates with a fixed light target (a virtual volume with the properties of a laser beam), with which a beam of charged particles interacts. Such a description allows user to flexibly change necessary parameters depending on the problem being solved, which opens up new possibilities for using Geant4 in the studied area.
* K.T. Phuoc et al., Nat. Photonics 6, 308 (2012).
** A. Ovodenko et al., Appl. Phys. Lett. 109, 253504 (2016).
*** S. Agostinelli et al., Nucl. Instrum. Meth. A 506, 250 (2003).

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB29

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Received ※ 17 September 2021 — Revised ※ 22 September 2021 — Accepted ※ 23 September 2021 — Issued ※ 02 October 2021

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TUPSB32

Emission of Photons at the Interaction of a High-Energy Positron Beam with a Periodically Deformed Crystal

289

A.A. Yanovich, A.G. Afonin, G.I. Britvich, M.Yu. Chesnokov, Y.A. Chesnokov, A.A. Durum, M.Yu. Kostin, I.S. Lobanov, V.I. Pitalev, I.V. Poluektov, Yu.E. Sandomirskiy
IHEP, Moscow Region, Russia

Funding: Russian science foundation (grant 17-12-01532)
Periodically deformed crystals have long attracted at-tention as "crystalline undulators". In the experi-ment carried out at the U-70 accelerator, the radiation of positrons moving in a periodically deformed crystal was observed. Experimental evidence has been obtained for an undulator peak in a radiation spectrum, which is quali-tatively consistent with calculations. It is shown that most of the emitted energy is due to hard photons with energies of tens of MeV as a result of channeling and reflection of particles, whose spectral density is several times higher than the radiation in an amorphous target.

Poster TUPSB32 [0.864 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB32

About •

Received ※ 06 September 2021 — Accepted ※ 10 September 2021 — Issued ※ 17 September 2021

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

TUPSB33

2.5 GeV Booster Synchrotron for a New Kurchatov Synchrotron Radiation Source

293

A.S. Smygacheva, Ye. Fomin, V. Korchuganov, V.A. Ushakov, A.G. Valentinov
NRC, Moscow, Russia

The Project of complete modernization of the current accelerator complex is in progress in the NRC «Kurchatov Institute». A new booster synchrotron is a part of the injection complex for a new 3-d generation synchrotron light source. The booster has to ensure reliable and stable operation of the upgraded main storage ring. The paper presents the final design of the new booster synchrotron and its main parameters.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB33

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Received ※ 22 September 2021 — Accepted ※ 23 September 2021 — Issued ※ 16 October 2021

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TUPSB34

New Lattice Design for Kurchatov Synchrotron Radiation Source

297

Ye. Fomin, V. Korchuganov
NRC, Moscow, Russia

Funding: The reported study was partially funded by RFBR, project number 19-29-12039
Nowadays the upgrade project of the 2nd generation synchrotron radiation source operating at NRC Kurchatov Institute has been ongoing. The main aim of the project is to create a new synchrotron radiation source with the same 124 m circumference and providing synchrotron radiation properties inherent to the 3rd generation sources (emittance ~ 3 nm·rad). The new machine will consist of new storage ring with 2.5 GeV electron energy, full energy booster synchrotron and 0.2 GeV linac. The mandatory requirement for the project is to keep all currently operating beamlines. In this article we present the design challenges and approaches for this machine, the conceptional design and baseline lattice.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB34

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Received ※ 22 September 2021 — Revised ※ 29 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 20 October 2021

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