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Published Articles

Derniers ajouts:
2019-04-26
08:33
Mechanical Strain Measurements Based on Fiber Bragg Grating Down to Cryogenic Temperature - R&D; Study and Applications / Guinchard, Michael (CERN) ; Bertarelli, Alessandro (CERN) ; Bianchi, Laura (CERN) ; Boyer, Francois (CERN) ; Cabon, Morgane (CERN) ; Calviani, Marco (CERN) ; Capatina, Ofelia (CERN) ; Catinaccio, Andrea (CERN) ; Ferracin, Paolo (CERN) ; Grosclaude, Philippe (CERN ; Unlisted, CH)
In recent years, optical fiber sensors have been increasingly used due to their outstanding performances. Their application is preferable in case of special requirements that exclude the application of conventional electrical sensors. [...]
2018 - 3 p. - Published in : 10.18429/JACoW-IPAC2018-WEPMF081 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPMF081

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2019-04-26
08:33
Experimental Modal Analysis of Lightweight Structures used in Particle Detectors: Optical non-contact Method / Guinchard, Michael (CERN) ; Angeletti, Massimo (CERN) ; Boyer, Francois (CERN) ; Catinaccio, Andrea (CERN) ; Gargiulo, Corrado (CERN) ; Lacny, Lukasz (CERN ; Cracow Tech. U.) ; Laudi, Elisa (CERN) ; Scislo, Lukasz (CERN ; Cracow Tech. U.)
CERN's specialized structures such as particle detectors are built to have high rigidity and low weight, which comes at a cost of their high fragility. Shock and vibration issues are a key element for their successful transport, handling operations around the CERN infra-structure, as well as for their operation underground. [...]
2018 - 3 p. - Published in : 10.18429/JACoW-IPAC2018-WEPMF079 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPMF079

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2019-04-26
08:33
Reliability and Availability of Particle Accelerators: Concepts, Lessons, Strategy / Apollonio, Andrea (CERN) ; Ponce, Laurette (CERN) ; Rey Orozko, Odei (CERN) ; Schmidt, Ruediger (CERN) ; Siemko, Andrzej (CERN) ; Todd, Benjamin (CERN) ; Uythoven, Jan (CERN) ; Verweij, Arjan (CERN) ; Wollmann, Daniel (CERN) ; Zerlauth, Markus (CERN)
This paper will present the results and latest status of an extensive effort to analyse and improve the reliability and availability of the LHC. After the introduction of basic concepts and definitions, the paper reviews the performance of the LHC in 2015-2017. [...]
2018 - 5 p. - Published in : 10.18429/JACoW-IPAC2018-FRXGBD1 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.FRXGBD1

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2019-04-26
08:33
Operation of a Cryogenic Current Comparator with Nanoampere Resolution for Continuous Beam Intensity Measurements in the Antiproton Decelerator at CERN / Fernandes, Miguel (CERN ; U. Liverpool (main)) ; Alves, Diogo (CERN) ; Koettig, Torsten (CERN) ; Lees, Andrew (CERN) ; Schwickert, Marcus (Darmstadt, GSI) ; Stöhlker, Thomas (Darmstadt, GSI ; U. Jena (main)) ; Tan, Jocelyn (CERN) ; Welsch, Carsten (U. Liverpool (main))
Low-intensity charged particle beams are particularly challenging for non-perturbative beam diagnostics due to the small amplitude of induced electromagnetic fields. The Antiproton Decelerator (AD) and Extra Low ENergy Antiproton (ELENA) rings at CERN decelerate beams containing 10⁷ antiprotons. [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-THPML044 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPML044

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2019-04-26
08:33
Compensation of Transient Beam Loading in Ramping Synchrotrons Using a Fixed Frequency Processing Clock / Galindo Guarch, Francisco Javier (Barcelona, Polytechnic U. ; CERN) ; Baudrenghien, Philippe (CERN) ; Moreno Arostegui, Juan Manuel (Barcelona, Polytechnic U.)
Transient beam loading compensation schemes, such as One-Turn-FeedBack (OTFB), require beam synchronous processing (BSP). Swept clocks derived from the RF, and therefore harmonic to the revolution frequency, are widely used in CERN synchrotrons; this simplifies implementation with energy ramping, where the revolution frequency changes. [...]
2018 - 4 p. - Published in : (2018) , pp. THPML121
- Published in : J. Phys. : Conf. Ser.: 1067 (2018) , no. 7, pp. 072033 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPML121

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2019-04-26
08:33
Optical Beam Loss Monitors Based on Fibres for the CLARA Phase 1 Beam-Line / Alexandrova, Alexandra (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Brynes, Alexander (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Devlin, Lee (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Effinger, Ewald (CERN) ; Holzer, Eva Barbara (CERN) ; Jackson, Frank (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Tzoganis, Vasilis (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Welsch, Carsten (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.)
Fibre based Optical Beam Loss Monitors (oBLMs) are on-line devices used in-situ to measure losses along a beam-line. The technology is based on the detection of Cherenkov radiation, produced inside quartz fibres placed alongside the beampipe, from the interaction of secondary showers generated from losses hitting the vacuum pipe. [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-THPML090 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPML090

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2019-04-26
08:33
Architectural Considerations for Recirculated and Energy-Recovered Hard XFEL Drivers / Douglas, David (Jefferson Lab) ; Angal-Kalinin, Deepa (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Benson, Stephen (Jefferson Lab) ; Charles, Tessa (CERN) ; Powers, Tom (Jefferson Lab) ; Roblin, Yves (Jefferson Lab) ; Satogata, Todd (Jefferson Lab) ; Tennant, Chris (Jefferson Lab) ; Thompson, Neil (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Wheelhouse, Alan (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) et al.
A confluence of events motivates discussion of design options for hard XFEL driver accelerators. Firstly, multiple superconducting radio-frequency (SRF) driven systems are now online (European XFEL), in construction (LCLS-II), or in design (MARIE); these provide increasing evidence of the transformational potential they offer for fundamental science with its concomitant benefits. [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-THPMK106 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPMK106

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2019-04-26
08:33
The Stripline Kicker Prototype for the CLIC Damping Rings at ALBA: Installation, Commissioning and Beam Characterisation / Pont, Montserrat (CELLS - ALBA, LLS) ; Ayala, Nuria (CELLS - ALBA, LLS) ; Barnes, Michael (CERN) ; Belver-Aguilar, Carolina (CERN) ; Carlà, Michele (CELLS - ALBA, LLS) ; Günzel, Thomas (CELLS - ALBA, LLS) ; Iriso, Ubaldo (CELLS - ALBA, LLS) ; Martí, Zeus (CELLS - ALBA, LLS) ; Monge, Raquel (CELLS - ALBA, LLS) ; Olmos, Angel (CELLS - ALBA, LLS) et al.
The extraction system for the CLIC Damping Rings has very tight specifications. Therefore a full characterisation of the behaviour of the stripline kicker under conditions as close as possible to the expected working conditions will be very valuable. [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-THPMF013 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPMF013

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2019-04-26
08:33
Fabrication and Cold Test of the Correction Cavity Chain for Klystron-Based CLIC / Wang, Ping (Tsinghua U., Beijing, Dept. Eng. Phys. ; Tsinghua U., Beijing, KLPRI) ; Cao, Dezhi (Tsinghua U., Beijing, Dept. Eng. Phys. ; Tsinghua U., Beijing, KLPRI) ; Chen, Huaibi (Tsinghua U., Beijing, Dept. Eng. Phys. ; Tsinghua U., Beijing, KLPRI) ; Shi, Jiaru (Tsinghua U., Beijing, Dept. Eng. Phys. ; Tsinghua U., Beijing, KLPRI) ; Wang, Zhihui (Tsinghua U., Beijing, Dept. Eng. Phys. ; Tsinghua U., Beijing, KLPRI) ; Zha, Hao (Tsinghua U., Beijing, Dept. Eng. Phys. ; Tsinghua U., Beijing, KLPRI)
A proposed RF scheme based on correction cavity chain and storage cavity (CC-SC scheme) for klystron-based CLIC has the ability to generate flat output pulses. In the scheme, the correction cavity chain modulates the amplitude of the input pulse, while the storage cavity compresses the amplitude-modulated pulse. [...]
2018 - 3 p. - Published in : 10.18429/JACoW-IPAC2018-THPAL155 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPAL155

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2019-04-26
08:33
High Energy Neutrino expectations from the Central Molecular Zone / Marinelli, Antonio (INFN, Pisa ; Pisa U.) ; Gaggero, Daniele (U. Amsterdam, GRAPPA) ; Grasso, Dario (INFN, Pisa ; Pisa U.) ; Taoso, Marco (Madrid, IFT) ; Urbano, Alfredo (CERN) ; Ventura, Sofia (INFN, Pisa ; Pisa U.)
The density of molecular gas in the central few hundreds parsecs of our Galaxy is estimated to be two orders of magnitude larger than the Galactic average. This, so called, Central Molecular Zone, represent a privileged target where to look for a signature of Galactic cosmic ray interactions. [...]
SISSA, 2018 - 8 p. - Published in : PoS ICRC2017 (2018) 939 Fulltext: PDF; External link: PoS server
In : 35th International Cosmic Ray Conference, Busan, Republique De Coree, 12 - 20 Jul 2017, pp.939

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