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SPS and CNGS

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2017-08-23
11:39
Experimental results of crystal-assisted slow extraction at the SPS / Fraser, M.A. (CERN) ; Addesa, F. (INFN, Rome ; Rome U.) ; Cavoto, G. (INFN, Rome ; Rome U.) ; Galluccio, F. (INFN, Naples) ; Gilardoni, S. (CERN) ; Goddard, B. (CERN) ; Iacoangeli, F. (INFN, Rome ; Rome U.) ; Kain, V. (CERN) ; Mirarchi, D. (CERN) ; Montesano, S. (CERN) et al.
The possibility of extracting highly energetic particles from the Super Proton Synchrotron (SPS) by means of silicon bent crystals has been explored since the 1990's. [...]
arXiv:1707.05151. - 4 p.
Preprint

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2017-08-22
10:01
Determination of AC Characteristics of Superconducting Dipole Magnets in the Large Hadron Collider Based on Experimental Results and Simulations / Ambjørndalen, Sara
The Large Hadron Collider (LHC) utilizes high-field superconducting Main Dipole Magnets that bend the trajectory of the beam [...]
CERN-THESIS-2017-119 - 158 p.

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2017-08-22
06:22
Equalizer design techniques for dispersive cables with application to the SPS wideband kicker / Platt, Jason (SLAC) ; Hofle, Wolfgang (CERN) ; Pollock, Kristin (SLAC) ; Fox, John (SLAC)
A wide-band vertical instability feedback control system in development at CERN requires 1–1.5 GHz of bandwidth for the entire processing chain, from the beam pickups through the feedback signal digital processing to the back-end power amplifiers and kicker structures. Dispersive effects in cables, amplifiers, pickup and kicker elements can result in distortions in the time domain signal as it proceeds through the processing system, and deviations from linear phase response reduce the allowable bandwidth for the closed-loop feedback system. [...]
2017 - 5 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 868 (2017) 93-97

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2017-08-21
15:33
Search for High-Mass Diphoton Resonances in Proton-Proton Collisions at 13 TeV and Radiation Studies for Calorimetry at the High-Luminosity LHC / Quittnat, Milena ; Dissertori, Günther ETH Zürich (dir.) () ; Wallny, Rainer ETH Zürich (dir.) ()
In this dissertation, two different topics are addressed which are part of the main areas of research of modern high-energy physics experiments at the Large Hadron Collider (LHC): a search for new physics and the development of new detectors. The first part of this dissertation presents the search for high mass diphoton resonances in proton-proton collisions at a center-of-mass energy of 13 TeV with the Compact Muon Solenoid (CMS) experiment. [...]
CERN-THESIS-2017-117; Diss.ETH.No.24170; https://doi.org/10.3929/ethz-b-000000241.- Zürich : ETH Zürich, 2017-06-02 - 248 p. Fulltext: PDF; External link: Approve this document (restricted)

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2017-08-11
13:55
MODELLING SLOW EXTRACTION INDUCED RADIOACTIVITY IN SPS LSS2 / Araujo Martinez, Aurora Cecilia ; Fraser, Matthew Alexander (CERN)
The Accelerator and Beam Transfer (ABT) group is investigating the impact of recent proposals to extract higher proton intensities to Fixed Target experiments at the SPS [...]
CERN-STUDENTS-Note-2017-035. - 2017.
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2017-08-03
06:01
Characterization of 41Ar production in air at a PET cyclotron facility / Cicoria, Gianfranco (Unlisted, IT) ; Cesarini, Francesco (Unlisted, IT) ; Infantino, Angelo (CERN) ; Vichi, Sara (Bologna U.) ; Zagni, Federico (Unlisted, IT) ; Marengo, Mario (Unlisted, IT)
In the production of Positron Emission Tomography (PET) nuclides at a medical cyclotron facility 41Ar (T1/2 = 109.34 m) is produced by the activation of air due to the neutron flux, according to the 40Ar(n, γ)41Ar reaction. In this work, we describe a relatively inexpensive and readily reproducible methodology of air sampling that can be used for quantification of 41Ar during the routine production of PET nuclides. [...]
2017 - 14 p. - Published in : Mod. Phys. Lett. A 32 (2017) 1740014

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2017-07-28
06:17
Shape-memory alloy rings as tight couplers between ultrahigh-vacuum pipes: Design and experimental assessment / Niccoli, Fabrizio (CERN) ; Garion, Cedric (CERN) ; Maletta, Carmine (CERN) ; Chiggiato, Paolo (CERN)
The ultrahigh-vacuum (UHV) coupling performance of NiTiNb shape memory alloy (SMA) rings was investigated by finite element (FE) simulations and experimental measurements. The contact pressure at the interface between the SMA ring and the vacuum pipe was measured and good agreements with the FE results were obtained. [...]
2017 - 12 p. - Published in : J. Vac. Sci. Technol. A A 35 (2017) 031601

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2017-07-28
06:17
Design of ERMC and RMM, the Base of the $Nb_3Sn$ 16 T Magnet Development at CERN / Izquierdo Bermudez, Susana (CERN) ; Ortwein, Rafal (CERN) ; Perez, Juan Carlos (CERN) ; Rochepault, Etienne (CERN)
High-field superconducting accelerator magnets are a key technology of the future circular collider. In order to master the technical challenges and achieve the performance targets, CERN has launched a technology development program. [...]
2017 - 4 p. - Published in : IEEE Trans. Appl. Supercond. 27 (2017) 4002004
In : Applied Superconductivity Conference, Denver, CO, USA, 4 - 9 Sep 2016, pp.4002004

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2017-07-28
06:17
The crab cavities cryomodule for SPS test / Zanoni, C (CERN) ; Amorim Carvalho, A (CERN) ; Artoos, K (CERN) ; Atieh, S (CERN) ; Brodzinski, K (CERN) ; Calaga, R (CERN) ; Capatina, O (CERN) ; Capelli, T (CERN) ; Carra, F (CERN) ; Dassa, L (CERN) et al.
RF Crab Cavities are an essential part of the HL-LHC upgrade. Two concepts of such systems are being developed: the Double Quarter Wave (DQW) and the RF Dipole (RFD). [...]
2017 - 7 p. - Published in : J. Phys. : Conf. Ser. 874 (2017) 012092

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2017-07-28
06:17
Possibilities for transverse feedback phase adjustment by means of digital filters / Kotzian, G (CERN)
In transverse feedback systems a phase adjustment is generally required to convert a beam position signal from a pick-up into a momentum correction signal used by a transverse kicker. In this paper we outline several possibilities for phase adjustments using only single pickups or the vector combination of two pick-ups. [...]
2017 - 6 p. - Published in : J. Phys. : Conf. Ser. 874 (2017) 012089

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