CERN Accelerating science

All CERN Accelerators documents

Najnovije dodano:
2018-11-14
06:23
Dose gradient assessment at the new CERN CHARM irradiation facility / Infantino, A (CERN) ; Cangialosi, C (CERN) ; Krawina, M (CERN) ; Brucoli, M (CERN) ; Brugger, M (CERN) ; De Carvalho Saraiva, J P (CERN) ; Danzeca, S (CERN)
CERN CHARM facility provides a unique complex radiation environment characterized by particle energy spectra representative of high-energy accelerators, ground and atmospheric conditions and space applications. [...]

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2018-11-13
12:17
The CLIC Potential for New Physics / De Blas Mateo, Jorge (Universita e INFN, Padova (IT)) ; Franceschini, Roberto (Universita e INFN Roma Tre (IT)) ; Riva, Francesco (Universite de Geneve (CH)) ; Roloff, Philipp Gerhard (CERN) ; Schnoor, Ulrike (CERN) ; Spannowsky, Michael (University of Durham (GB)) ; Wells, James D (University of Michigan) ; Wulzer, Andrea (CERN) ; Zupan, Jure (University of Cincinnati (US))
The Compact Linear Collider (CLIC) is a mature option for the future of high energy physics. It combines the benefits of the clean environment of $e^+e^−$ colliders with the possibility of operating at centre-of-mass energies able to probe scales beyond the reach of Large Hadron Collider (LHC) for many scenarios of new physics. [...]
CLICdp-Draft-2018-021.- Geneva : CERN, 2018 - 257. Fulltext: PDF;

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2018-11-13
06:27
Development of a control strategy for the 18 MW power converter of the CERN PS Booster accelerator / Rocca, Stefano (CERN) ; Boattini, Fulvio (CERN) ; de Paco Soto, Luis Miguel (CERN)
In the frame of the Large Hadron Collider Injectors Upgrade project, a new 18 MW power converter is required for the supply of the main magnets in the PS Booster accelerator. [...]
2018. - 8 p.

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2018-11-13
06:27
Novel measurement technique for the electromagnetic characterization of coating materials in the sub-THz frequency range / Passarelli, Andrea (CERN ; Darmstadt, Tech. U.) ; Bartosik, Hannes (CERN) ; Rumolo, Giovanni (CERN) ; Vaccaro, Vittorio Giorgio (INFN, Naples) ; Masullo, Maria Rosaria (INFN, Naples) ; Koral, Can (INFN, Naples) ; Papari, Gian Paolo (Naples U. ; INFN, Naples) ; Andreone, Antonello (Naples U. ; INFN, Naples) ; Boine-Frankenheim, Oliver (Darmstadt, Tech. U.)
This paper describes a reliable, handy, and inexpensive measurement system to characterize, in the sub-THz frequency range, the coating materials used in the beam pipes of accelerators. The method is based on time domain measurements of an electromagnetic wave passing through a waveguide having a thin central slab, where the coating material is deposited on both sides. [...]
2018 - 11 p. - Published in : Phys. Rev. Accel. Beams 21 (2018) 103101 Fulltext: PDF;

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2018-11-13
06:27
DC vacuum breakdown in an external magnetic field / Lebedynskyi, S (Sumy, Inst. Appl. Phys.) ; Karpenko, O (Sumy, Inst. Appl. Phys.) ; Kholodov, R (Sumy, Inst. Appl. Phys.) ; Baturin, V (Sumy, Inst. Appl. Phys.) ; Profatilova, Ia (Sumy, Inst. Appl. Phys. ; CERN) ; Shipman, N (CERN) ; Wuensch, W (CERN)
The subject of the present theoretical and experimental investigations is the effect of the external magnetic field induction on dark current and a possibility of breakdown. The generalization of the Fowler-Nordheim equation makes it possible to take into account the influence of a magnetic field parallel to the cathode surface on the field emission current. [...]
2018 - 7 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 908 (2018) 318-324 Fulltext: PDF;

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2018-11-13
06:27
High Power Conditioning of X-Band RF Components / Catalán Lasheras, Nuria (CERN) ; Damerau, Heiko (CERN) ; Gerard, Romain Louis (CERN) ; Grudiev, Alexej (CERN) ; Lucas, Thomas (Melbourne U.) ; McMonagle, Gerard (CERN) ; Paszkiewicz, Jan (CERN) ; Pitman, Sam (Lancaster U.) ; Solodko, Anastasiya (CERN) ; Syratchev, Igor (CERN) et al.
As part of the effort to qualify CLIC accelerating struc-tures prototypes, new X-band test facilities have been built and commissioned at CERN in the last years. In this context, a number of RF components have been designed and manufactured aiming at stable operation above 50 MW peak power and several kW of average power. [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-WEPMF074 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPMF074

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2018-11-13
06:27
Status of the Polarix-TDS Project / Craievich, Paolo (PSI, Villigen) ; Aßmann, Ralph (DESY) ; Bopp, Markus (PSI, Villigen) ; Braun, Hans-Heinrich (PSI, Villigen) ; Catalán Lasheras, Nuria (CERN) ; Christie, Florian (DESY) ; D'Arcy, Richard (DESY) ; Dorda, Ulrich (DESY) ; Foese, Manon (DESY) ; Ganter, Romain (PSI, Villigen) et al.
A collaboration between DESY, PSI and CERN has been established to develop and build an advanced modular X-band transverse deflection structure (TDS) system with the new feature of providing variable polarization of the deflecting force. This innovative CERN design requires very high manufacturing precision to guarantee highest azimuthal symmetry of the structure to avoid the deterioration of the polarization of the streaking field. [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-THPAL068 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPAL068

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2018-11-13
06:27
Construction and Commissioning of the S-Band High-Gradient RF Laboratory at IFIC / Esperante Pereira, Daniel (Valencia U., IFIC) ; Blanch Gutiérrez, Cesar (Valencia U., IFIC) ; Boronat, Marça (Valencia U., IFIC) ; Fuster, Juan (Valencia U., IFIC) ; Gonzalez Iglesias, Daniel (Valencia U., IFIC) ; Vnuchenko, Anna (Valencia U., IFIC) ; Catalán Lasheras, Nuria (CERN) ; Gimeno, Benito (Valencia U.) ; McMonagle, Gerard (CERN) ; Syratchev, Igor (CERN) et al.
An S-band High-Gradient (HG) Radio Frequency (RF) laboratory is under construction and commissioning at IFIC. The purpose of the laboratory is to perform investigations of high-gradient phenomena and to develop normal-conducting RF technology, with special focus on RF systems for hadron-therapy. [...]
2018 - 6 p. - Published in : (2018) , pp. THPAL005
- Published in : J. Phys. : Conf. Ser.: 1067 (2018) , no. 8, pp. 082024 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPAL005

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2018-11-10
06:23
Resistive-Wall Impedance of Insertions for FCC-hh / Riemann, Bernard (Dortmund U., DELTA) ; Arsenyev, Sergey (CERN) ; Khan, Shaukat (Dortmund U., DELTA) ; Schulte, Daniel (CERN)
In this work, transverse and longitudinal resistive-wall impedances for beam pipes in the experiment, injection, extraction and RF systems insertion regions of the Future Hadron-Hadron Collider (FCC-hh) are computed based on contributions from different given cross sections of the surrounding (elliptical) chamber parts along the beam path, their temperature-dependent conductivities, and optical functions. An emphasis is placed on the behaviour of transverse impedance in the main experimental regions (A and G), where maximum beta values of $10^4$ to $10^5$ m occur in dependence of the operation mode respectively lattice configuration. [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-MOPMK014 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.MOPMK014

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2018-11-10
06:23
Modelling Wake Impedance of a Rough Surface in Application to the FCC-hh Beamscreen / Arsenyev, Sergey (CERN) ; Schulte, Daniel (CERN)
The inner surface of the future circular collider (FCC-hh) beamscreen is proposed to be laser-treated in order to mitigate the electron cloud build-up. However, the rough structure of the treated surface can result in unwanted impedance increase, potentially leading to the transverse mode coupling instability (TMCI). [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-MOPMF031 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.MOPMF031

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