# R&D and Studies

2015-08-19
17:49
 Performance Evaluation of the SPS Scraping System in View of the High Luminosity LHC / Mereghetti, Alessio Injection in the LHC is a delicate moment, since the LHC collimation system cannot offer adequate protection during beam transfer [...] CERN-THESIS-2015-116 - 369 p.

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2015-08-18
13:15
 Beam dynamics in the final focus section of the future linear collider / Blanco Garcia, Oscar Roberto The exploration of new physics in the Tera electron-Volt''~(TeV) scale with precision measurements requires lepton colliders providing high luminosities to obtain enough statistics for the particle interaction analysis [...] CERN-THESIS-2015-115 - 123 p.

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2015-08-04
16:29
 Status Report of Projects Activities at CERN / Missiaen, Dominique (CERN) ; Dewitte, Philippe (CERN) ; Dobers, Tobias (CERN) ; Fuchs, Jean-Frederic (CERN) ; Gayde, Jean-Christophe (CERN) ; Jones, Mark (CERN) ; Mainaud Durand, Helene (CERN) Besides the Long Shut-Down 1 (LS1), some projects are still progressing at CERN. [...] CERN-ACC-2015-0086. - 2014. - 6 p. Full text

2015-08-03
16:51
 Mitigating the Effect of an Orbit Kink on Vertical Emittance and Polarization / Koop, I (BINP, Novosibirsk, Russia) Orbit kinks in FCC tunnel are under discussions for they can help to reduce the depth of few shafts [1]. Still two unwanted effects could make their use completely forbidden. [...] CERN-ACC-2015-090.- Geneva : CERN, 2015 Fulltext: PDF;

2015-07-31
17:07
 Scenario for Precision Beam Energy Calibration in FCC-ee / Koop, I A (BINP, Novosibirsk, Russia) The resonance depolarization method was very successfully used in the experiments at LEP, where the mass of the Z-boson was determined with the relative uncertainty [1, 2]. In the future FCC-ee circular electron-positron collider the luminosity at Z-peak (beam energy 45.5 GeV) is expected be 4-5 orders of magnitude higher and one goal is to perform the same experiments as at LEP, but with much greater accuracy, approaching the level of [3]. [...] CERN-ACC-2015-081.- Geneva : CERN, 2015 Fulltext: PDF;

2015-07-10
10:18
 First estimation of the photon absorbers horizontal aperture for TLEP / Mounet, Nicolas Frank (CERN) This note gives a simple estimate of the horizontal aperture of the photon absorbers that could be used in the TLEP collider, to intercept synchrotron radiation from dipoles.. CERN-ACC-NOTE-2015-0018. - 2015. - 7 p. Full text

2015-07-06
15:41
 Top-up injection for FCC-ee / Aiba, Masamitsu (PSI, Villigen, Switzerland) ; Hernandez, Angela Saa (PSI, Villigen, Switzerland)) ; Zimmermann, Frank (CERN) Top-up injection is essential for FCC-ee due to the very short luminosity lifetime especially for the Higgs and top-pair operation modes. Several schemes exist for topping up the collider rings [...] CERN-ACC-2015-065.- Geneva : CERN, 2015 Fulltext: PDF;

2015-06-02
13:30
 A design for an 802 MHz ERL Cavity / Calaga, Rama (CERN) A low to medium energy recovery linac facility from 150-450-900 MeV in several stages is under study at CERN for validating important beam dynamics aspects and superconducting RF technology. [...] CERN-ACC-NOTE-2015-0015. - 2015. Full text

2015-05-18
10:19
 Electromechanical characterization of superconducting wires and tapes at 77 K / Bjoerstad, Roger The strain dependency of the critical current in state-of-the-art cuprate high-temperature superconductors (HTS) has been characterized [...] CERN-THESIS-2015-045 - 53 p.

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2015-04-17
09:55
 Alternative Approach to the Provision of the High-field Dipole for FCC-hh / Taylor, Thomas (CERN) This paper describes a possible approach to reducing the complexity and cost of the high field dipole magnets. In addition the cooling of the winding could be improved in the proposed design, with a consequent reduction in the shielding requirements. [...] CERN-ACC-2015-036.- Geneva : CERN, 2015 Fulltext: PDF;

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