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CERN Published Articles

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2018-11-14
06:23
Radiative neutron capture on $^{242}\mathrm{Pu}$ in the resonance region at the CERN n_TOF-EAR1 facility / Lerendegui-Marco, J (Seville U.) ; Guerrero, C (Seville U.) ; Mendoza, E (Madrid, CIEMAT) ; Quesada, J M (Seville U.) ; Eberhardt, K (Mainz U.) ; Junghans, A R (HZDR, Dresden) ; Krtička, M (Charles U.) ; Aberle, O (CERN) ; Andrzejewski, J (Lodz U.) ; Audouin, L (Orsay, IPN) et al. /n_TOF
The spent fuel of current nuclear reactors contains fissile plutonium isotopes that can be combined with uranium to make mixed oxide (MOX) fuel. In this way the Pu from spent fuel is used in a new reactor cycle, contributing to the long-term sustainability of nuclear energy. [...]
2018 - 21 p. - Published in : Phys. Rev. C 97 (2018) 024605 Fulltext: PDF;

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2018-11-14
06:23
Measurement of the antiproton–nucleus annihilation cross-section at low energy / Aghai-Khozani, H (Munich, Max Planck Inst. Quantenopt.) ; Bianconi, A (U. Brescia ; INFN, Pavia) ; Corradini, M (U. Brescia ; INFN, Pavia) ; Hayano, R (Tokyo U.) ; Hori, M (Munich, Max Planck Inst. Quantenopt. ; Tokyo U.) ; Leali, M (U. Brescia ; INFN, Pavia) ; Lodi Rizzini, E (U. Brescia ; INFN, Pavia) ; Mascagna, V (U. Brescia ; INFN, Pavia) ; Murakami, Y (Tokyo U.) ; Prest, M (INFN, Milan Bicocca ; Insubria U., Como) et al.
Systematic measurements of the annihilation cross sections of low energy antinucleons were performed at CERN in the 80's and 90's. However the antiproton data on medium-heavy and heavy nuclear targets are scarce. [...]
2018 - 13 p. - Published in : Nucl. Phys. A 970 (2018) 366-378

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2018-11-13
06:27
Simulation challenges in high-resolution $\Delta\Sigma$ ADCs: The experimental case study of CERN DS-22 / Arpaia, Pasquale (CERN ; U. Naples (main)) ; Baccigalupi, Carlo (CERN) ; Martino, Michele (CERN)
The intrinsic switching nature of Delta-Sigma ($\Delta\Sigma$) Analog-to-Digital Converters (ADCs) makes challenging to achieve accurate and effective simulations. In this paper, several simulation models and methods are proposed and compared with actual measurements to demonstrate their accuracy. [...]
2018 - 6 p. - Published in : 10.1109/I2MTC.2018.8409578
In : IEEE International Instrumentation and Measurement Technology Conference, Houston, TX, USA, 14 - 17 May 2018, pp.8409578

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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
First beam tests of prototype silicon modules for the CMS High Granularity Endcap Calorimeter / Akchurin, N (Texas Tech.) ; Apreysan, A (Fermilab) ; Banerjee, S (Fermilab) ; Barney, D (CERN) ; Bilki, B (Iowa U.) ; Bornheim, A (Caltech) ; Bueghly, J (Northwestern U.) ; Callier, S (Ec. Polytech., OMEGA) ; Candelise, V (Taiwan, Natl. Central U.) ; Chang, Y H (Taiwan, Natl. Central U.) et al.
The High Luminosity phase of the Large Hadron Collider will deliver 10 times more integrated luminosity than the existing collider, posing significant challenges for radiation tolerance and event pileup on detectors, especially for forward calorimetry. As part of its upgrade program, the Compact Muon Solenoid collaboration is designing a high-granularity calorimeter (HGCAL) to replace the existing endcap calorimeters. [...]
FERMILAB-CONF-18-595-CMS.- 2018 - 41 p. - Published in : JINST 13 (2018) P10023 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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2018-11-11
04:28
ASASSN-18ey: The Rise of a New Black-Hole X-ray Binary / ATLAS Collaboration
We present the discovery of ASASSN-18ey, a new black hole low-mass X-ray binary discovered by the All-Sky Automated Survey for SuperNovae (ASAS-SN). A week after ASAS-SN discovered ASASSN-18ey as an optical transient, it was detected as an X-ray transient by MAXI/GCS. [...]
arXiv:1808.07875.- 2018-10-29 - 8 p. - Published in : Astrophys. J. 867 (2018) L9 Fulltext: PDF;

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