IBIC2019 - List of Authors (Potylitsyn, A.)

Paper	Title	Page
TUCO02	Experimental Observation of Submillimeter Coherent Cherenkov Radiation at CLARA Facility	261
	K.V. Fedorov, P. Karataev, A.N. Oleinik JAI, Egham, Surrey, United Kingdom K.V. Fedorov, A. Potylitsyn, A. Potylitsyn TPU, Tomsk, Russia P. Karataev Royal Holloway, University of London, Surrey, United Kingdom A.N. Oleinik BelSU, Belgorod, Russia T.H. Pacey, Y.M. Saveliev STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom T.H. Pacey UMAN, Manchester, United Kingdom Y.M. Saveliev Cockcroft Institute, Warrington, Cheshire, United Kingdom
	Nowadays, the method of longitudinal beam profile diagnostic based on transition radiation (TR) spectrum is well studied [1] and is constantly being applied, while using of coherent Cherenkov radiation (CCR) is a modern task that opens up new possibilities in this area [2]. In current work we conducted experiments on CCR generation, observation and it further spectral analysis at 0.1-30 THz spectral range. All experimental work was at CLARA (beam area 1) facility (~50 MeV beam energy at up to 10 Hz pulse repetition rate with sub-ps bunch length). Inside of vacuum chamber we developed movable platform where both VCR and TR target were placed, which is allows us to observe both effects during one accelerator run. For spectral analysis we used Martin-Pupplet interferometer as it provides higher signal to noise ratio and allows us to perform instabilities normalisation. As a result we will demonstrate a selection of interferograms and spectrums (as well as reconstructed longitudinal beam profiles) for different machine setups and distances between charged particle beam and Cherenkov target. By using mathematical analysis it has been shown that CLARA bunch length was about 1.2 ps.
	Slides TUCO02 [22.952 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-TUCO02
About •	paper received ※ 03 September 2019 paper accepted ※ 10 September 2019 issue date ※ 10 November 2019
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TUPP012	Image of the Transverse Bunch Profile via COTR	313
	A. Potylitsyn, T. Gusvitskii, L.G. Sukhikh TPU, Tomsk, Russia G. Kube, A.I. Novokshonov DESY, Hamburg, Germany
	Funding: This work was supported by the grant of the Russian Ministry of Science # 3/1903.2017. Transverse beam profile diagnostics based on Optical Transition Radiation (OTR) is a routine technique at most modern electron linear accelerators (linacs) which is difficult to implement for FEL beams [] and LWPA accelerators []. The reason is that a standard OTR beam profile monitor with a few micrometers space resolution cannot be used for measurements of ultrashort bunch profiles due to coherent effects in the OTR emission process [*]. We have developed an approach which allows calculating the propagation of coherent optical transition radiation (COTR) through a standard optical system consisting of a focusing lens and a spatial resolving detector placed in the image plane. Strict summation of the OTR fields emitted coherently by electrons inside the bunch and its focusing onto the detector plane allows obtaining a COTR image of the bunch profile. With the assumption of a Gaussian transverse bunch profile it is shown that the resulting image has a typical "ring" shape, characteristics of which are depended on the bunch transverse rms size and optical system parameters. E. Saldin, et al., "The Physics of Free Electron Lasers", Springer-Verlag, 2010. N. Bourgeois, et al., AIP Conf. Proc., 1507, 258 (2012). * H. Loos, R. Akre, et al., SLAC-PUB-13395 (2008).
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-TUPP012
About •	paper received ※ 04 September 2019 paper accepted ※ 10 September 2019 issue date ※ 10 November 2019
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WEPP037	First Measurements of Cherenkov-Diffraction Radiation at Diamond Light Source	624
	D.M. Harryman, P. Karataev JAI, Egham, Surrey, United Kingdom M. Apollonio, L. Bobb DLS, Oxfordshire, United Kingdom M. Bergamaschi, R. Kieffer, M. Krupa, T. Lefèvre, S. Mazzoni CERN, Geneva, Switzerland A. Potylitsyn TPU, Tomsk, Russia
	Cherenkov Diffraction Radiation (ChDR), appearing when a charged particle moves in the vicinity of a dielectric medium with speed faster than the speed of light inside the medium, is a phenomenon that can be exploited for a range of non-invasive beam diagnostics. By using dielectric radiators that emit photons when in proximity to charged particle beams, one can design devices to measure beam properties such as position, direction and size. The Booster To Storage-ring (BTS) test stand at Diamond Light Source provides a 3 GeV electron beam for diagnostics research. A new vessel string has been installed to allow the BTS test stand to be used to study ChDR diagnostics applicable for both hadron and electron accelerators. This paper will discuss the commissioning of the BTS test stand, as well as exploring the initial results obtained from the ChDR monitor.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-WEPP037
About •	paper received ※ 04 September 2019 paper accepted ※ 09 September 2019 issue date ※ 10 November 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THAO01	Cherenkov Diffraction Radiation as a tool for beam diagnostics	660
	T. Lefèvre, D. Alves, M. Bergamaschi, A. Curcio, O.R. Jones, R. Kieffer, S. Mazzoni, N. Mounet, A. Schlogelhofer, E. Senes CERN, Geneva, Switzerland M. Apollonio, L. Bobb DLS, Oxfordshire, United Kingdom A. Aryshev, N. Terunuma KEK, Ibaraki, Japan M.G. Billing, Y.L. Bordlemay Padilla, J.V. Conway, J.P. Shanks Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA V.V. Bleko, S.Yu. Gogolev, A.S. Konkov, J.S. Markova, A. Potylitsyn, D.A. Shkitov TPU, Tomsk, Russia K.V. Fedorov, D.M. Harryman, P. Karataev, K. Lekomtsev JAI, Egham, Surrey, United Kingdom J. Gardelle CEA, LE BARP cedex, France K. Łasocha Jagiellonian University, Kraków, Poland
	During the last three years, the emission of Cherenkov Diffraction Radiation (ChDR), appearing when a relativistic charged particle moves in the vicinity of a dielectric medium, has been investigated with the aim of providing non-invasive beam diagnostics. ChDR has very interesting properties, with a large number of photons emitted in a narrow and well-defined solid angle, providing excellent conditions for detection with very little background. This contribution will present a collection of recent beam measurements performed at several facilities such as the Cornell Electron Storage Ring, the Advanced Test Facility 2 at KEK, the Diamond light source in the UK and the CLEAR test facility at CERN. Those results, complemented with simulations, suggest that the use of both incoherent and coherent emission of Cherenkov diffraction radiation could open up new beam instrumentation possibilities for relativistic charged particle beams.
	Slides THAO01 [10.658 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-THAO01
About •	paper received ※ 09 September 2019 paper accepted ※ 10 September 2019 issue date ※ 10 November 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Experimental Observation of Submillimeter Coherent Cherenkov Radiation at CLARA Facility

261

K.V. Fedorov, P. Karataev, A.N. Oleinik
JAI, Egham, Surrey, United Kingdom
K.V. Fedorov, A. Potylitsyn, A. Potylitsyn
TPU, Tomsk, Russia
P. Karataev
Royal Holloway, University of London, Surrey, United Kingdom
A.N. Oleinik
BelSU, Belgorod, Russia
T.H. Pacey, Y.M. Saveliev
STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom
T.H. Pacey
UMAN, Manchester, United Kingdom
Y.M. Saveliev
Cockcroft Institute, Warrington, Cheshire, United Kingdom

Nowadays, the method of longitudinal beam profile diagnostic based on transition radiation (TR) spectrum is well studied [1] and is constantly being applied, while using of coherent Cherenkov radiation (CCR) is a modern task that opens up new possibilities in this area [2]. In current work we conducted experiments on CCR generation, observation and it further spectral analysis at 0.1-30 THz spectral range. All experimental work was at CLARA (beam area 1) facility (~50 MeV beam energy at up to 10 Hz pulse repetition rate with sub-ps bunch length). Inside of vacuum chamber we developed movable platform where both VCR and TR target were placed, which is allows us to observe both effects during one accelerator run. For spectral analysis we used Martin-Pupplet interferometer as it provides higher signal to noise ratio and allows us to perform instabilities normalisation. As a result we will demonstrate a selection of interferograms and spectrums (as well as reconstructed longitudinal beam profiles) for different machine setups and distances between charged particle beam and Cherenkov target. By using mathematical analysis it has been shown that CLARA bunch length was about 1.2 ps.

Slides TUCO02 [22.952 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-TUCO02

About •

paper received ※ 03 September 2019 paper accepted ※ 10 September 2019 issue date ※ 10 November 2019

Export •

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

TUPP012

Image of the Transverse Bunch Profile via COTR

313

A. Potylitsyn, T. Gusvitskii, L.G. Sukhikh
TPU, Tomsk, Russia
G. Kube, A.I. Novokshonov
DESY, Hamburg, Germany

Funding: This work was supported by the grant of the Russian Ministry of Science # 3/1903.2017.
Transverse beam profile diagnostics based on Optical Transition Radiation (OTR) is a routine technique at most modern electron linear accelerators (linacs) which is difficult to implement for FEL beams [*] and LWPA accelerators [**]. The reason is that a standard OTR beam profile monitor with a few micrometers space resolution cannot be used for measurements of ultrashort bunch profiles due to coherent effects in the OTR emission process [***]. We have developed an approach which allows calculating the propagation of coherent optical transition radiation (COTR) through a standard optical system consisting of a focusing lens and a spatial resolving detector placed in the image plane. Strict summation of the OTR fields emitted coherently by electrons inside the bunch and its focusing onto the detector plane allows obtaining a COTR image of the bunch profile. With the assumption of a Gaussian transverse bunch profile it is shown that the resulting image has a typical "ring" shape, characteristics of which are depended on the bunch transverse rms size and optical system parameters.
* E. Saldin, et al., "The Physics of Free Electron Lasers", Springer-Verlag, 2010.
** N. Bourgeois, et al., AIP Conf. Proc., 1507, 258 (2012).
*** H. Loos, R. Akre, et al., SLAC-PUB-13395 (2008).

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-TUPP012

About •

paper received ※ 04 September 2019 paper accepted ※ 10 September 2019 issue date ※ 10 November 2019

Export •

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

WEPP037

First Measurements of Cherenkov-Diffraction Radiation at Diamond Light Source

624

D.M. Harryman, P. Karataev
JAI, Egham, Surrey, United Kingdom
M. Apollonio, L. Bobb
DLS, Oxfordshire, United Kingdom
M. Bergamaschi, R. Kieffer, M. Krupa, T. Lefèvre, S. Mazzoni
CERN, Geneva, Switzerland
A. Potylitsyn
TPU, Tomsk, Russia

Cherenkov Diffraction Radiation (ChDR), appearing when a charged particle moves in the vicinity of a dielectric medium with speed faster than the speed of light inside the medium, is a phenomenon that can be exploited for a range of non-invasive beam diagnostics. By using dielectric radiators that emit photons when in proximity to charged particle beams, one can design devices to measure beam properties such as position, direction and size. The Booster To Storage-ring (BTS) test stand at Diamond Light Source provides a 3 GeV electron beam for diagnostics research. A new vessel string has been installed to allow the BTS test stand to be used to study ChDR diagnostics applicable for both hadron and electron accelerators. This paper will discuss the commissioning of the BTS test stand, as well as exploring the initial results obtained from the ChDR monitor.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-WEPP037

About •

paper received ※ 04 September 2019 paper accepted ※ 09 September 2019 issue date ※ 10 November 2019

Export •

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

THAO01

Cherenkov Diffraction Radiation as a tool for beam diagnostics

660

T. Lefèvre, D. Alves, M. Bergamaschi, A. Curcio, O.R. Jones, R. Kieffer, S. Mazzoni, N. Mounet, A. Schlogelhofer, E. Senes
CERN, Geneva, Switzerland
M. Apollonio, L. Bobb
DLS, Oxfordshire, United Kingdom
A. Aryshev, N. Terunuma
KEK, Ibaraki, Japan
M.G. Billing, Y.L. Bordlemay Padilla, J.V. Conway, J.P. Shanks
Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
V.V. Bleko, S.Yu. Gogolev, A.S. Konkov, J.S. Markova, A. Potylitsyn, D.A. Shkitov
TPU, Tomsk, Russia
K.V. Fedorov, D.M. Harryman, P. Karataev, K. Lekomtsev
JAI, Egham, Surrey, United Kingdom
J. Gardelle
CEA, LE BARP cedex, France
K. Łasocha
Jagiellonian University, Kraków, Poland

During the last three years, the emission of Cherenkov Diffraction Radiation (ChDR), appearing when a relativistic charged particle moves in the vicinity of a dielectric medium, has been investigated with the aim of providing non-invasive beam diagnostics. ChDR has very interesting properties, with a large number of photons emitted in a narrow and well-defined solid angle, providing excellent conditions for detection with very little background. This contribution will present a collection of recent beam measurements performed at several facilities such as the Cornell Electron Storage Ring, the Advanced Test Facility 2 at KEK, the Diamond light source in the UK and the CLEAR test facility at CERN. Those results, complemented with simulations, suggest that the use of both incoherent and coherent emission of Cherenkov diffraction radiation could open up new beam instrumentation possibilities for relativistic charged particle beams.

Slides THAO01 [10.658 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-THAO01

About •

paper received ※ 09 September 2019 paper accepted ※ 10 September 2019 issue date ※ 10 November 2019

Export •

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