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1.
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The HL-LHC Beam Gas Vertex Monitor - Performance and Design Optimisation Using Simulations
/ Kolbinger, Bernadette (CERN) ; Gibson, Stephen M (Royal Holloway, U. of London) ; Guerin, Helene (CERN ; Royal Holloway, U. of London) ; Jones, Owain Rhodri (CERN) ; Kieffer, Robert (Royal Holloway, U. of London) ; Lefèvre, Thibaut (CERN) ; Salzburger, Andreas (CERN) ; Storey, James W (CERN) ; Veness, Raymond (CERN) ; Zamantzas, Christos (CERN)
The Beam Gas Vertex (BGV) instrument is a novel non-invasive beam profile monitor and part of the High Luminosity Upgrade of the Large Hadron Collider (LHC) at CERN. Its aim is to continuously measure emittance and transverse beam profile throughout the whole LHC cycle, which has not yet been achieved by any other single device in the machine. [...]
JACoW, 2021 - 5 p.
- Published in : JACoW IBIC 2021 (2021) 249-253
Fulltext: PDF;
In : 10th International Beam Instrumentation Conference (IBIC 2021), Online, Korea, 13 - 17 Sep 2021, pp.249-253
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2.
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The HL-LHC Beam Gas Vertex Monitor - Simulations for Design Optimisation and Performance Study
/ Guerin, Helene (CERN ; Royal Holloway, U. of London) ; Gibson, Stephen M (Royal Holloway, U. of London) ; Jones, Owain Rhodri (CERN) ; Kieffer, Robert (Royal Holloway, U. of London) ; Kolbinger, Bernadette (CERN) ; Lefèvre, Thibaut (CERN) ; Salvant, Benoit (CERN) ; Storey, James W (CERN) ; Veness, Raymond (CERN) ; Zamantzas, Christos (CERN)
The Beam Gas Vertex (BGV) instrument is a non-invasive transverse beam profile monitor being designed as part of the High Luminosity Upgrade of the LHC (HL-LHC) at CERN. Its aim is to continuously measure bunch-by-bunch beam profiles, independent of beam intensity, throughout the LHC cycle. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 2120-2123
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.2120-2123
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3.
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Properties of Cherenkov Diffraction Radiation as Predicted by the Polarisation Currents Approach for Beam Instrumentation
/ Harryman, Daniel (Royal Holloway, U. of London) ; Bergamaschi, Michele (CERN) ; Bobb, Lorraine (Garsington, Oxfordshire) ; Fedorov, Kirill (Royal Holloway, U. of London) ; Karataev, Pavel (Royal Holloway, U. of London) ; Kieffer, Robert (CERN) ; Łasocha, Kacper (CERN) ; Lefèvre, Thibaut (CERN) ; Mazzoni, Stefano (CERN) ; Potylitsyn, Alexander (Tomsk Polytechnic U.) et al.
Cherenkov-Diffraction Radiation (ChDR) appears when a charged particle moves in the vicinity of a dielectric medium with velocity higher than the phase velocity of light inside the medium. As the charged particle does not contact the medium, the emission of ChDR is a phenomenon that can be exploited for a range of non-invasive beam diagnostics. [...]
2020 - 5 p.
- Published in : 10.18429/JACoW-IBIC2020-THPP05
Fulltext: PDF;
In : 9th International Beam Instrumentation Conference, Online, 14 - 18 Sep 2020, pp.THPP05
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4.
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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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5.
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First Measurements of Cherenkov-Diffraction Radiation at Diamond Light Source
/ Harryman, Daniel (JAI, UK) ; Apollonio, Marco (Diamond Light Source) ; Bergamaschi, Michele (CERN) ; Bobb, Lorraine (Diamond Light Source) ; Karataev, Pavel (JAI, UK) ; Kieffer, Robert (CERN) ; Krupa, Michal (CERN) ; Lefèvre, Thibaut (CERN) ; Mazzoni, Stefano (CERN) ; Potylitsyn, Alexander (Tomsk Polytechnic U.)
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. [...]
2019 - 5 p.
- Published in : 10.18429/JACoW-IBIC2019-WEPP037
Fulltext: PDF;
In : 8th International Beam Instrumentation Conference (IBIC 2019), Malmo, Sweden, 8 - 12 Sep 2019, pp.WEPP037
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6.
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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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7.
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Status of the CLEAR electron beam user facility at CERN
/ Sjobak, Kyrre (Oslo U. ; CERN) ; Adli, Erik (Oslo U.) ; Bergamaschi, Michele (CERN) ; Burger, Stephane (CERN) ; Corsini, Roberto (CERN) ; Curcio, Alessandro (CERN) ; Curt, Stephane (CERN) ; Döbert, Steffen (CERN) ; Farabolini, Wilfrid (CERN) ; Gamba, Davide (CERN) et al.
The CERN Linear Electron Accelerator for Research (CLEAR) has now finished its second year of operation, providing a testbed for new accelerator technologies and a versatile radiation source. Hosting a varied experimental program, this beamline provides a flexible test facility for users both internal and external to CERN, as well as being an excellent accelerator physics training ground. [...]
CERN-ACC-2019-084.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-MOPTS054
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.MOPTS054
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8.
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Measuring beam size with the LHC Beam Gas Vertex detector
/ Würkner, Benedikt (CERN) ; Alexopoulos, Andreas (CERN) ; Barschel, Colin (CERN) ; Bay, Aurelio (Ecole Polytechnique, Lausanne) ; Blanc, Frederic (Ecole Polytechnique, Lausanne) ; Bravin, Enrico (CERN) ; Bregliozzi, Giuseppe (CERN) ; Chritin, Nicolas (CERN) ; Dehning, Bernd (CERN) ; Ferro-Luzzi, Massimiliano (CERN) et al.
The Beam Gas Vertex detector (BGV) is an innovative beam profile monitor being developed as part of the High Luminosity LHC (HL-LHC) project at CERN. The goal is to continually measure the transverse beam size by reconstructing tracks originating from beam-gas interactions using high precision tracking detectors. [...]
CERN-ACC-2019-205.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-WEPGW084
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPGW084
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9.
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The Beam Gas Vertex profile monitoring station for HL-LHC
/ Kieffer, Robert (CERN ; Royal Holloway, U. of London) ; Alexopoulos, Andreas (CERN ; Thessaly U.) ; Fosse, Loic (CERN) ; Gibson, Stephen (Royal Holloway, U. of London ; CERN) ; Gonzalez Berges, Manuel (CERN) ; Guerin, Helene (CERN ; Royal Holloway, U. of London) ; Jones, Owain Rhodri (CERN) ; Marriott-Dodington, Thomas (CERN) ; Storey, James (CERN) ; Veness, Raymond (CERN) et al.
A new instrument is under development for the High Luminosity upgrade of the Large Hadron Collider at CERN (HL-LHC) to provide non-invasive transverse beam size measurements throughout the full acceleration cycle. The Beam Gas Vertex (BGV) monitor consists of a tank supplied with gas at very low pressure attached to the LHC beam pipe with a series of particle tracking stations located downstream outside vacuum. [...]
CERN-ACC-2019-102.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-WEPGW082
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPGW082
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10.
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Recent results using incoherent Cherenkov Diffraction Radiation for non-invasive beam diagnostics
/ Bergamaschi, Michele (CERN) ; Aryshev, Alexander (KEK, Tsukuba) ; Karataev, Pavel (JAI, UK ; Royal Holloway, U. of London) ; Kieffer, Robert (CERN) ; Lefèvre, Thibaut (CERN) ; Lekomtsev, Konstantin (JAI, UK ; Royal Holloway, U. of London) ; Mazzoni, Stefano (CERN) ; Potylitsyn, Alexander (Tomsk Polytechnic U.) ; Schloegelhofer, Andreas (TU Vienna)
When a relativistic charged particle travels at a short distance from the surface of dielectric material Cherenkov Diffraction Radiation (ChDR) is produced inside the dielectric. Recent observation of incoherent ChDR in the visible spectrum has opened the possibility of using this radiation for non-invasive beam size and position measurements. [...]
CERN-ACC-2019-104.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-WEPGW077
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPGW077
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