CERN Accelerating science

All CERN Accelerators documents

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This new collection aggregates CERN accelerator-related documents on CDS. It will continuously be enriched and improved in the near future.
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2016-05-04
14:55
Preliminary EIR optics and lattice files: Milestone M3.2 / Seryi, Andrei (University of Oxford (GB))
This document describes the preliminary optics for the experimental insertion region, presented in the form of lattice files to provide a baseline for studying radiation effects, machine detector interface and beam-beam interactions as well as an optimised design for a smooth transit from injection to collision optics. The lattice files are kept in a repository together with the arc optics files..
CERN-ACC-2016-0031.- Geneva : CERN, 2016 Fulltext: PDF;

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2016-05-04
14:43
Baseline specifications and assumptions for accelerator magnet: Milestone M5.2 / Tommasini, Davide (CERN)
Preliminary set of specifications for an accelerator main dipole magnet, suitable for performing a comparative evaluation of different design options established under the same basis.
CERN-ACC-2016-0030.- Geneva : CERN, 2016 Fulltext: PDF;

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2016-05-03
06:02
Higher Order Modes Simulation and Measurements for 2400 MHz Cavity / Shashkov, Ya V (Moscow Phys. Eng. Inst.) ; Sobenin, N P (Moscow Phys. Eng. Inst.) ; Lalayan, M V (Moscow Phys. Eng. Inst.) ; Bazyl, D S (Moscow Phys. Eng. Inst.) ; Donetskiy, R V (Moscow Phys. Eng. Inst.) ; Zavadtsev, A (LLC, Nano Invest) ; Zobov, M (Frascati) ; Calaga, R (CERN)
In the frameworks of the High Luminosity LHC upgrade program an application of additional harmonic cavities operating at multiples of the main RF system frequency of 400 MHz is currently under discussion. The 800 MHz superconducting cavities with grooved beam pipes were suggested as one of the design options. [...]
THPB104.- 2016 - 3 p. - Published in : (2016) , pp. 1394-1396 Fulltext: PDF; External link: Fulltext
In : 17th International Conference on RF Superconductivity, Whistler, Canada, 13 - 18 Sep 2015, pp.1394-1396

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2016-05-03
06:02
Impact evaluation of environmental and geometrical parasitic effects on high-precision position measurement of the LHC collimator jaws / Danisi, Alessandro (CERN) ; Losito, Roberto (CERN) ; Masi, Alessandro (CERN)
Measuring the apertures of the Large Hadron Collider (LHC) collimators, as well as the positions of their axes, is a challenging task. The LHC collimators are equipped with high-precision linear position sensors, the linear variable differential transformers (LVDTs). [...]
2015 - 8 p. - Published in : Meas. Sci. Technol. 26 (2015) 094002

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2016-05-03
06:02
Frequency pre-tuning of the niobium-sputtered quarter-wave resonator for HIE-ISOLDE project at CERN / Zhang, P (CERN) ; D׳Elia, A (CERN ; Manchester U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Venturini Delsolaro, W (CERN) ; Artoos, K (CERN)
Superconducting quarter-wave resonators (QWRs) will be used in the superconducting linac upgrade in the frame of the HIE-ISOLDE project at CERN. The QWRs are made of bulk copper and have their inner surface covered with sputtered niobium. [...]
2015 - 9 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 797 (2015) 101-109

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2016-04-29
14:18
CHARM Facility Test Area Radiation Field Description / Thornton, Adam (University of Surrey (GB))
Specification document summarising the radiation field of the CHARM facility test area. [...]
CERN-ACC-NOTE-2016-0041.
- 2016. - 51 p.
Access to fulltext

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2016-04-29
07:05
A novel Beam Halo Monitor for the CMS experiment at the LHC / Orfanelli, S (Natl. Tech. U., Athens ; CERN) ; Dabrowski, A E (CERN) ; Giunta, M (CERN) ; Loos, R (CERN) ; Ambrose, M J (Minnesota U.) ; Mans, J (Minnesota U.) ; Rusack, R (Minnesota U.) ; Stifter, K (Minnesota U.) ; Stickland, D (Princeton U.) ; Fabbri, F (INFN, Bologna) et al.
A novel Beam Halo Monitor (BHM) has been designed and built for the CMS experiment at the LHC. It will provide an online, bunch-by-bunch measurement of background particles created by interactions of the proton beam with residual gas molecules in the vacuum chamber or with collimator material upstream of CMS. [...]
2015 - Published in : J. Instrum. 10 (2015) P11011 Fulltext: PDF;

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2016-04-29
07:05
Beam dynamics design of the Compact Linear Collider Drive Beam injector / Hajari, Sh Sanaye (IPM, Tehran ; CERN) ; Shaker, H (IPM, Tehran ; CERN) ; Doebert, S (CERN)
In the Compact Linear Collider (CLIC) the RF power for the acceleration of the Main Beam is extracted from a high-current Drive Beam that runs parallel to the main linac. The longitudinal and transverse beam dynamics of the Drive Beam injector has been studied in detail and optimized. [...]
2015 - 15 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 799 (2015) 172-186

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2016-04-29
07:05
Comparative results on the deflection of positively and negatively charged particles by multiple volume reflections in a multi-strip silicon deflector / Scandale, W (CERN ; Orsay, LAL ; INFN, Rome) ; Arduini, G (CERN) ; Butcher, M (CERN) ; Cerutti, F (CERN) ; Garattini, M (CERN) ; Gilardoni, S (CERN) ; Lechner, A (CERN) ; Losito, R (CERN) ; Masi, A (CERN) ; Mereghetti, A (CERN) et al.
Bent silicon crystals in channeling mode are already used for beam extraction and collimation in particle accelerators. Volume reflection of beam particles is more efficient than beam channeling, however, the mean deflection angle is rather small. [...]
2015 - 6 p. - Published in : JETP Lett. 101 (2015) 679-684

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2016-04-29
07:04
Time-resolved momentum and beam size diagnostics for bunch trains with very large momentum spread / Olvegård, M (Uppsala U.) ; Barnes, M J (CERN) ; Ducimetière, L (CERN) ; Ziemann, V (Uppsala U.)
We propose a novel method to measure the time-resolved momentum distribution and size of beams with very large momentum spread. To demonstrate the principle we apply the method to the beam at the end of a Compact Linear Collider decelerator, where conventional diagnostic methods are hampered by the large energy spread of the drive beam after up to 90% of its kinetic energy is converted into microwave power. [...]
2015 - 13 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 797 (2015) 234-246

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