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Cherenkov Diffraction Radiation as a tool for beam diagnostics
/ Lefèvre, Thibaut (CERN) ; Alves, Diogo (CERN) ; Apollonio, Marco (Diamond Light Source) ; Aryshev, Alexander (KEK, Tsukuba) ; Bergamaschi, Michele (CERN) ; Billing, Michael (Cornell U., CLASSE) ; Bleko, Vitol'd (Tomsk Polytechnic U.) ; Bobb, Lorraine (Diamond Light Source) ; Bordlemay Padilla, Yadira (Cornell U., CLASSE) ; Conway, Joseph (Cornell U., CLASSE) et al.
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. [...]
2019 - 5 p.
- Published in : 10.18429/JACoW-IBIC2019-THAO01
Fulltext: PDF;
In : 8th International Beam Instrumentation Conference (IBIC 2019), Malmo, Sweden, 8 - 12 Sep 2019
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2.
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Generation of incoherent Cherenkov diffraction radiation in synchrotrons
/ Kieffer, R (CERN) ; Bartnik, L (Cornell U.) ; Bergamaschi, M (CERN) ; Bleko, V V (Dubna, JINR) ; Billing, M (Cornell U.) ; Bobb, L (Diamond Light Source) ; Conway, J (Cornell U.) ; Forster, M (Cornell U.) ; Karataev, P (Royal Holloway, U. of London) ; Konkov, A S (Dubna, JINR) et al.
Incoherent Cherenkov diffraction radiation was recently produced in the Cornell electron storage ring using counterpropagating beams (electrons and positrons) passing in the close vicinity of a dielectric made of fused silica. We present in this paper a collection of the experimental investigations that were performed on Cherenkov diffraction radiation in both the infrared and the visible range. [...]
2020 - 9 p.
- Published in : Phys. Rev. Accel. Beams 23 (2020) 042803
Fulltext from Publisher: PDF;
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3.
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Recent Results on Non-invasive Beam Size Measurement Methods Based on Polarization Currents
/ Mazzoni, Stefano (CERN) ; Aryshev, Alexander (KEK, Tsukuba) ; Bergamaschi, Michele (CERN) ; Billing, Michael (Cornell U.) ; Bleko, Vitol'd (Tomsk Polytechnic U.) ; Bobb, Lorraine (Diamond Light Source) ; Conway, Joseph (Cornell U.) ; Forster, Michael (Cornell U.) ; Fuentes, Yadira (Cornell U.) ; Jones, Owain Rhodri (CERN) et al.
We present recent results on non-invasive beam profile measurement techniques based on Diffraction Radiation (DR) and Cherenkov Diffraction Radiation (ChDR). Both methods exploit the analysis of broadband electromagnetic radiation resulting from polarization currents produced in, or at the boundary of, a medium in close proximity of a charged particle beam. [...]
JACoW, 2019 - 4 p.
- Published in : 10.18429/JACoW-IBIC2018-WEPB14
Published fulltext: PDF;
In : 7th International Beam Instrumentation Conference, Shanghai, China, 9 - 13 Sep, 2018, pp.WEPB14
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4.
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Direct Observation of Incoherent Cherenkov Diffraction Radiation in the Visible Range
/ Kieffer, R (CERN) ; Bartnik, L (Cornell U.) ; Bergamaschi, M (CERN) ; Bleko, V V (Tomsk Polytechnic U.) ; Billing, M (Cornell U.) ; Bobb, L (Diamond Light Source) ; Conway, J (Cornell U.) ; Forster, M (Cornell U.) ; Karataev, P (Royal Holloway, U. of London) ; Konkov, A S (Tomsk Polytechnic U.) et al.
We report on the observation of incoherent Cherenkov radiation emitted by a 5.3 GeV positron beam circulating in the Cornell electron-positron storage ring as the beam passes in the close vicinity of the surface of a fused silica radiator (i.e., at a distance larger than 0.8 mm). The shape of the radiator was designed in order to send the Cherenkov photons towards the detector, consisting of a compact optical system equipped with an intensified camera. [...]
2018 - 6 p.
- Published in : Phys. Rev. Lett. 121 (2018) 054802
Fulltext: PDF;
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5.
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Non-invasive Beam Diagnostics with Cherenkov Diffraction Radiation
/ Lefèvre, Thibaut (CERN) ; Bartnik, Laurel (Cornell U.) ; Bergamaschi, Michele (CERN) ; Billing, Michael (Cornell U.) ; Bleko, Vitol'd (Tomsk Polytechnic U.) ; Bobb, Lorraine (Diamond Light Source) ; Padilla Fuentes, Yadira (Cornell U.) ; Conway, Joseph (Cornell U.) ; Forster, Michael (Cornell U.) ; Jones, Owain Rhodri (CERN) et al.
Based on recent measurements of incoherent Cherenkov Diffraction Radiation (ChDR) performed on the Cornell Electron Storage Ring, we present here a concept for the centering of charged particle beams when passing close to dielectric material. This would find applications as beam instrumentation in dielectric capillary tubes, typically used in novel accelerating technologies, as well as in collimators using bent crystals for high-energy, high-intensity hadron beams, such as the Large Hadron Collid-er or Future Circular Collider. [...]
CERN-ACC-2018-108.-
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-WEPAF074
Fulltext: wepaf074 - PDF; wepaf074_2 - PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPAF074
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6.
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Feasibility of diffraction radiation for noninvasive beam diagnostics as characterized in a storage ring
/ Bobb, L (Diamond Light Source) ; Kieffer, R (CERN) ; Lefevre, T (CERN) ; Mazzoni, S (CERN) ; Aumeyr, T (Royal Holloway, U. of London) ; Karataev, P (Royal Holloway, U. of London) ; Billing, M (Cornell U.) ; Conway, J (Cornell U.) ; Shanks, J (Cornell U.)
In recent years, there has been an increasing demand for noninvasive beam size monitoring on particle accelerators. Ideally, these monitors should be cost effective and require little or no maintenance. [...]
2018 - 17 p.
- Published in : Phys. Rev. Accel. Beams 21 (2018) 032801
Fulltext: PDF;
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7.
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Cherenkov Diffraction Radiation From Long Dielectric Material: An Intense Source of Photons in the NIR-THz Range
/ Lefèvre, Thibaut (CERN) ; Bergamaschi, Michele (CERN) ; Billing, Michael (Cornell U., CLASSE) ; Bobb, Lorraine (Garsington, Oxfordshire) ; Conway, Joseph (Cornell U., CLASSE) ; Jones, Owain Rhodri (CERN) ; Karataev, Pavel (Royal Holloway, U. of London) ; Kieffer, Robert (CERN) ; Mazzoni, Stefano (CERN) ; Shanks, James (Cornell U., CLASSE)
This paper presents the design on the Cornell Electron Storage Ring (CESR) of an experimental set-up to meas-ure incoherent Diffraction Cherenkov Radiation (DChR) produced in a 2 cm long SiO2 radiator by a 2.1 GeV elec-tron beam. The electron beam is circulating at a distance of few mm from the edge of the radiator and the DChR photon output power is expected to be significantly higher than the diffraction radiation power emitted from a metal-lic slit of similar aperture. [...]
CERN-ACC-2017-280.-
2017 - 4 p.
- Published in : 10.18429/JACoW-IPAC2017-MOPAB118
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.MOPAB118
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8.
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Optical diffraction radiation for position monitoring of charged particle beams
/ Kieffer, R (CERN) ; Bravin, E (CERN) ; Lefevre, T (CERN) ; Mazzoni, S (CERN) ; Bergamaschi, M (Royal Holloway, U. of London) ; Karataev, P (Royal Holloway, U. of London) ; Kruchinin, K (Royal Holloway, U. of London) ; Billing, M (Cornell U., CLASSE) ; Conway, J (Cornell U., CLASSE) ; Shanks, J (Cornell U., CLASSE) et al.
In the framework of the future linear collider collaboration (CLIC, ILC), non-intercepting beam monitoring instruments are under development for very low emittance and high charge density beams. Optical diffraction radiation (ODR) was studied and developed during the last years focussing on beam size measurements. [...]
2017 - 4 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 402 (2017) 88-91
Fulltext: PDF;
In : 7h International Conference on Charged & Neutral Particles Channeling Phenomena, Sirmione, Italy, 23 - 30 Sep 2016, pp.88
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9.
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Development of a Versatile OTR-ODR Station for Future Linear Colliders
/ Kieffer, Robert (CERN) ; Aumeyr, Thomas (Royal Holloway, U. of London) ; Bergamaschi, Michele (Royal Holloway, U. of London) ; Billing, Michael (Cornell U., CLASSE) ; Bobb, Lorraine (Diamond Light Source) ; Conway, Joseph (Cornell U., CLASSE) ; Karataev, Pavel (Royal Holloway, U. of London) ; Lefèvre, Thibaut (CERN) ; Mazzoni, Stefano (CERN) ; Shanks, James (Cornell U., CLASSE) et al.
In order to study the feasibility of Optical Transition (OTR) and Diffraction (ODR) Radiation based profile measurement for the future electron-positron linear colliders (ILC, CLIC) a new dedicated instrument is under development at CERN to be installed in KEK-ATF2 beam line in fall 2015. To optimize sensitivity to micron and sub-micron beam sizes, we plan to observe ODR/OTR in the visible-UV wavelength range, down to approximately 150 nm. [...]
2016 - 4 p.
- Published in : 10.18429/JACoW-IBIC2015-TUPB057
Fulltext: PDF;
In : International Beam Instrumentation Conference , Melbourne, Australia, 13 - 17 Sep 2015, pp.TUPB057
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10.
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Advanced Simulations of Optical Transition and Diffraction Radiation
/ Aumeyr, Thomas (Royal Holloway, U. of London) ; Billing, MG (Cornell U., CLASSE) ; Bobb, Lorraine Marie (Royal Holloway, U. of London) ; Bolzon, B (CERN) ; Bravin, Enrico (CERN) ; Karataev, Pavel (Royal Holloway, U. of London) ; Kruchinin, Konstantin (Royal Holloway, U. of London) ; Lefevre, Thibaut (CERN) ; Mazzoni, Stefano (CERN)
Charged particle beam diagnostics is a key task in modern and future accelerator installations. The diagnostic tools are practically the “eyes” of the operators. [...]
CERN-BE-2016-001; CLIC-Note-1062.-
Geneva : CERN, 2015 - 9 p.
- Published in : Phys. Rev. Spec. Top. Accel. Beams 18 (2015) 042801
APS Open Access article: PDF; Fulltext: CERN-BE-2016-001 - PDF; CLIC-Note-1062 - PDF;
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