2019-01-16
16:57 |
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2019-01-16
06:31 |
802 MHz ERL Cavity Design and Development
/ Marhauser, F (Jefferson Lab) ; Castagnola, S (Jefferson Lab) ; Clemens, W A (Jefferson Lab) ; Dail, J G (Jefferson Lab) ; Dhakal, P (Jefferson Lab) ; Fors, F (Jefferson Lab) ; Henry, J (Jefferson Lab) ; Rimmer, R A (Jefferson Lab) ; Turlington, L (Jefferson Lab) ; Williams, R S (Jefferson Lab) et al.
In the framework of a collaboration between CERN and JLab, an SRF accelerating cavity for energy recovery linacs operating at 802 MHz was developed in the context of the CERN's Large Hadron electron Collider (LHeC) design study. A single-cell and a five-cell cavity from fine grain high RRR niobium were built at JLab to validate the basic RF design in vertical tests. [...]
- Published in : 10.18429/JACoW-IPAC2018-THPAL146
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPAL146
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2019-01-15
17:02 |
International Advisory Committee Final Statement on the FCC CDRs
/ Dissertori, Guenther (ETH Zurich (CH))
The International Advisory Committee (IAC) for the Future Circular Collider (FCC) study has followed the activities of the FCC study group during the years 2017-2018, according to its mandate given by the FCC Steering Committee. This mandate consisted in reviewing the scientific and technical progress and considering, for each of the numerous FCC study areas, the questions related to the readiness level required for a Conceptual Design Report (CDR) were asked. [...]
CERN-ACC-2019-0008.-
Geneva : CERN, 2019
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2019-01-15
15:35 |
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2019-01-15
11:02 |
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2019-01-15
09:36 |
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2019-01-15
06:22 |
Dynamic Testing and Characterization of Advanced Materials in a New Experiment at CERN HiRadMat Facility
/ Bertarelli, Alessandro (CERN) ; Accettura, Carlotta (CERN ; Milan Polytechnic) ; Berthomé, Emmanuel (CERN) ; Bianchi, Laura (CERN) ; Bolz, Philipp (Darmstadt, GSI) ; Carra, Federico (CERN) ; Fichera, Claudio (CERN) ; Frankl, Matthias (CERN) ; Furness, Thomas (Huddersfield U.) ; Gobbi, Giorgia (CERN) et al.
An innovative and comprehensive experiment (named “Multimat”) was successfully carried out at CERN HiRadMat facility on 18 different materials relevant for Collimators and Beam Intercepting Devices. Material samples, tested under high intensity proton pulses of 440 GeV/c, exceeding the energy density expected in HL-LHC, ranged from very light carbon foams to tungsten heavy alloys, including novel composites as graphite/carbides and metal/diamond without and with thin-film coatings. [...]
2018 - 8 p.
- Published in : (2018) , pp. WEPMF071
- Published in : J. Phys. : Conf. Ser.: 1067 (2018) , no. 8, pp. 082021
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In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPMF071
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2019-01-15
06:22 |
Electron Cloud Build Up for LHC Sawtooth Vacuum Chamber
/ Guillermo Cantón, Gerardo (CERN ; CINVESTAV, IPN) ; Maury Cuna, Georfrey (Guanajuato U.) ; Ocampo, Edgar (Guanajuato U.) ; Zimmermann, Frank (CERN)
At high proton-beam energies, beam-induced synchrotron radiation is an important source of heating, of beam-related vacuum pressure increase, and of primary photoelectrons, which can give rise to an electron cloud. For the arcs of LHC a sawtooth pattern had been imprinted on the horizontally outward side of the vacuum chamber in order to locally absorb synchrotron radiation photons without dispersing them all around the chamber. [...]
2018 - 3 p.
- Published in : 10.18429/JACoW-IPAC2018-TUPAF030
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.TUPAF030
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2019-01-15
06:22 |
Observation of Fast Losses in the LHC Operation in 2017
/ Gorzawski, Arkadiusz (CERN ; Manchester U.) ; Appleby, Robert (Cockcroft Inst. Accel. Sci. Tech. ; U. Manchester (main)) ; Fuster-Martínez, Nuria (CERN) ; Garcia Morales, Hector (CERN) ; Redaelli, Stefano (CERN) ; Xu, Chen (CERN) ; Zamantzas, Christos (CERN)
Four diamond detectors that provide beam loss measurements with time resolution in the nanosecond range were added in the vicinity of the primary collimators of the Large Hadron Collider (LHC). This is a powerful diagnostic tool that provides the unique chance to measure bunch-by-bunch losses. [...]
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-TUPAF029
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.TUPAF029
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2019-01-15
06:22 |
Special Collimation System Configuration for the LHC High-Beta Runs
/ Garcia Morales, Hector (Royal Holloway, U. of London) ; Bruce, Roderik (CERN) ; Burkhardt, Helmut (CERN) ; Deile, Mario (CERN) ; Jakobsen, Sune (CERN) ; Mereghetti, Alessio (CERN) ; Redaelli, Stefano (CERN)
Special LHC high-beta optics is required for the forward physics program of TOTEM and ATLAS-ALFA. In this configuration, the beam is de-squeezed (the \beta-function at the collision point is increased) in order to minimize the divergence for measurements at very small scattering angles. [...]
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-MOPML012
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.MOPML012
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