RuPAC2021 - List of Authors (Yanovich, A.A.)

Paper	Title	Page
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
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSB51	Measurement of Neutron Field Functionals Around a Neutron Converter of 50 GeV Protons	330
	Ja.N. Rascvetalov, Yu.V. Beletskaya, A.G. Denisov, A.A. Durum, V.L. Ilukin, A. Mamaev, V.N. Peleshko, I.N. Piryazev, E.N. Savitskaya, M.M. Sukharev, S.E. Sukhikh, A.A. Yanovich IHEP, Moscow Region, Russia
	The experiment was performed on a pulsed neutron source of the "Neutron" research bench, being created at the U-70 accelerator at National Research Center "Kurchatov Institute" - IHEP, Protvino. Neutrons were generated by the 50 GeV proton beam in the special converter. As a measurement method, neutron activation analysis was used with a set of threshold activation detectors made of C, Al, Nb, In, Bi materials. The neutron energy thresholds of these detectors are in the range from 1 MeV to 75 MeV. The aluminium activation foils were used to calculate the absolute values of the proton quantities in the exposures. The results of measurements and calculations are presented in the form of the following functionals: nuclides activity of threshold reactions in detectors at the end of the exposure; reaction rate; neutron fluences with energies greater than the threshold. To estimate these values, the spectra of neutrons, protons and pions were calculated using the particle transport codes MARS and HADRON with the FAN15 as a low-energy block. It was found that neutrons dominate up to 100 MeV, and the charged hadrons contribution to the total reaction rate for a particular nuclide formation can range from 4% to 46%.
	Poster TUPSB51 [1.129 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB51
About •	Received ※ 15 September 2021 — Accepted ※ 29 September 2021 — Issued ※ 04 October 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

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

Cite •

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

TUPSB51

Measurement of Neutron Field Functionals Around a Neutron Converter of 50 GeV Protons

330

Ja.N. Rascvetalov, Yu.V. Beletskaya, A.G. Denisov, A.A. Durum, V.L. Ilukin, A. Mamaev, V.N. Peleshko, I.N. Piryazev, E.N. Savitskaya, M.M. Sukharev, S.E. Sukhikh, A.A. Yanovich
IHEP, Moscow Region, Russia

The experiment was performed on a pulsed neutron source of the "Neutron" research bench, being created at the U-70 accelerator at National Research Center "Kurchatov Institute" - IHEP, Protvino. Neutrons were generated by the 50 GeV proton beam in the special converter. As a measurement method, neutron activation analysis was used with a set of threshold activation detectors made of C, Al, Nb, In, Bi materials. The neutron energy thresholds of these detectors are in the range from 1 MeV to 75 MeV. The aluminium activation foils were used to calculate the absolute values of the proton quantities in the exposures. The results of measurements and calculations are presented in the form of the following functionals: nuclides activity of threshold reactions in detectors at the end of the exposure; reaction rate; neutron fluences with energies greater than the threshold. To estimate these values, the spectra of neutrons, protons and pions were calculated using the particle transport codes MARS and HADRON with the FAN15 as a low-energy block. It was found that neutrons dominate up to 100 MeV, and the charged hadrons contribution to the total reaction rate for a particular nuclide formation can range from 4% to 46%.

Poster TUPSB51 [1.129 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB51

About •

Received ※ 15 September 2021 — Accepted ※ 29 September 2021 — Issued ※ 04 October 2021

Cite •

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