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CERN Accelerating science

Accelerator Physics

Cover not available Diagnostics of short electron bunches with THz detectors in particle accelerators / Steinmann, Johannes Leonhard
Several novel diagnostic systems based on the detection of coherent THz radiation are presented [...]
[S.l.] : KIT Scientific Publishing, 2019. - 250 p.
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A Comparative Study of Radiation-Tolerant Fiber Optic Sensors for Relative Humidity Monitoring in High-Radiation Environments at CERN / Berruti, G (CERN ; Sannio U.) ; Consales, M (Sannio U.) ; Borriello, A (CNR, IMCB) ; Giordano, M (CNR, IMCB) ; Buontempo, S (INFN, Naples) ; Makovec, A (Debrecen U.) ; Breglio, G (U. Naples (main)) ; Petagna, P (CERN) ; Cusano, A (Sannio U.)
In this paper, we report a comparative study of fiber optic sensors for applications of relative humidity (RH) monitoring in high-radiation environments. [...]
2014. - 15 p.

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Proton-Beam-Driven Plasma Acceleration / Adli, Erik (Oslo U.) ; Muggli, Patric (Munich, Max Planck Inst.)
We describe the main ideas, promises and challenges related to proton-driven plasma wakefield acceleration. Existing high-energy proton beams have the potential to accelerate electron beams to the TeV scale in a single plasma stage. [...]
WS, 2016 - 20 p. - Published in : Rev. Accel. Sci. Technol. 09 (2016) 85-104 Published fulltext: PDF;

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First Operation for Stochastic Cooling of P-Bars in the CERN AD Using Optical Delay Notch Filter and Plans 2021 Operation / Höfle, Wolfgang (CERN) ; Arnaudon, Luca (CERN) ; Bjørsvik, Endre (CERN) ; Caspers, Fritz (CERN) ; Eriksson, Tommy (CERN) ; Louwerse, Reinier (CERN) ; Myklebust, Vebjorn Roed (CERN)
As part of the consolidation of the stochastic coolingsystem of the CERN Antiproton Decelerator a notch filter with optical delay lines has been developed. During the 2018 run of AD a notch filter with optical delay lines for the longitudinal stochastic cooling at 3.5 GeV/c was successfully tested with beam for the first time. [...]
2019 - 5 p. - Published in : 10.18429/JACoW-COOL2019-MOY01 Fulltext: 10.18429_JACoW-COOL2019-MOY01 - PDF; moy01 - PDF;
In : International Workshop on Beam Cooling and Related Topics, Novosibirsk, Russian Federation, September 23 - 27, 2019, pp.MOY01

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Electron Beam Characterization with Beam Loss Monitors in AWAKE / Verra, L. (CERN ; Munich, Max Planck Inst. ; Munich, Tech. U.) ; Turner, M. (CERN) ; Gessner, S. (CERN) ; Gschwendtner, E. (CERN) ; Velotti, F. (CERN) ; Muggli, P. (Munich, Max Planck Inst.)
We present a method to measure transverse size and position of an electron or proton beam, close to the injection point in plasma wakefields, where other diagnostics are not available. [...]
- 5 p.

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Noninvasive Micrometer-Scale Particle-Beam Size Measurement Using Optical Diffraction Radiation in the Ultraviolet Wavelength Range / Bergamaschi, M (CERN ; Royal Holloway, U. of London) ; Aryshev, A (KEK, Tsukuba) ; Karataev, P (Royal Holloway, U. of London) ; Kieffer, R (CERN ; Royal Holloway, U. of London) ; Lefevre, T (CERN) ; Mazzoni, S (CERN) ; Terunuma, N (KEK, Tsukuba) ; Yang, R (LPGP, Orsay)
We present recent achievements in the application of optical diffraction radiation (ODR) to the measurement of the transverse beam size of a 1.3 GeV micrometer-size electron beam performed with an instrument installed in the extended extraction line of the KEK Accelerator Test Facility. ODR is a recent technique for the measurement of the transverse size and emittance of highly relativistic particle beams. [...]
2020 - 13 p. - Published in : Phys. Rev. Applied 13 (2020) 014041 Fulltext: PDF;

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Sub-micron scale transverse electron beam size diagnostics methodology based on the analysis of optical transition radiation source distribution / Aryshev, A (KEK, Tsukuba) ; Ainsworth, R (Royal Holloway, U. of London) ; Aumeyr, T (Royal Holloway, U. of London) ; Bergamaschi, M (Royal Holloway, U. of London) ; Boogert, S T (Royal Holloway, U. of London) ; Karataev, P (Royal Holloway, U. of London) ; Kieffer, R (CERN) ; Kruchinin, K (Royal Holloway, U. of London) ; Lefevre, T (CERN) ; Mazzoni, S (CERN) et al.
Optical Transition Radiation (OTR) appearing when a charged particle crosses a boundary between two media with different dielectric properties has widely been used as a tool for transverse profile measurements of charged particle beams in numerous facilities worldwide. The resolution of the conventional monitors is defined by the dimensions of the Point Spread Function (PSF) distribution, i.e. [...]
2020 - 18 p. - Published in : JINST 15 (2020) P01020 Fulltext: PDF;

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Source of horizontal instability at the CERN Proton Synchrotron Booster / Koukovini-Platia, E (CERN) ; Barnes, M J (CERN) ; Bartosik, H (CERN) ; Rumolo, G (CERN) ; Sermeus, L (CERN) ; Zannini, C (CERN)
The CERN Proton Synchrotron Booster (PSB) has been known to suffer from horizontal instabilities since its early operation in the 1970s. These instabilities appear at specific beam energies and range of working points. [...]
2020 - 16 p. - Published in : Phys. Rev. Accel. Beams 22 (2020) 124201 Fulltext: PDF;

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Breakdown localisation in a pulsed DC electrode system / Profatilova, Iaroslava (CERN) ; Stragier, Xavier (CERN ; Eindhoven, Tech. U.) ; Calatroni, Sergio (CERN) ; Kandratsyeu, Aleh (Lisbon, CFTP) ; Rodriguez Castro, Enrique (CERN) ; Wuensch, Walter (CERN)
Breakdown localisation is an important diagnostic for studies of vacuum arcs in high electromagnetic field systems such as DC electrodes and radio frequency (RF) accelerating structures. For example, determining the position of individual breakdowns and corresponding distributions of ensembles of breakdowns are important measurements in high-gradient X-band test stands (CERN, SLAC, KEK) where these measurements are made by monitoring the RF signals.A highly precise breakdown localisation technique has been developed for the CLIC (Compact LInear Collider) pulsed DC electrode systems. [...]
2020 - 9 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 953 (2020) 163079 Fulltext: PDF;

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MD 3584: Long-Range Beam-Beam 2018 / Karastathis, Nikos ; Fartoukh, Stephane (CERN) ; Kostoglou, Sofia (National Technical Univ. of Athens (GR)) ; Papaphilippou, Yannis (CERN) ; Pojer, Mirko (CERN) ; Poyet, Axel (Universite Grenoble-Alpes (FR)) ; Solfaroli Camillocci, Matteo (CERN) ; Sterbini, Guido (CERN)
A recurrent issue of the LHC operation, observed both during Run1 and Run2 is the asymmetric behaviour of the two beams in terms of particle losses. [...]
- 2020. - 29 p.
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