CERN Accelerating science

PBC Notes

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Update of Facility Technical Studies for the FPF / Boyd, Jamie (CERN) ; Gamba, Davide (CERN) ; Osborne, John Andrew (CERN) ; Bud, Tamara Alice (CERN) ; Balazs, Kincso (CERN) ; Corso, Jean-Pierre (CERN) ; Magazinik, Anastasiya (Tampere University of Technology (FI)) ; Navascues Cornago, Angel (CERN)
The Forward Physics Facility (FPF) has been proposed to house a set of detectors to study collider neutrinos and search for new particles in the High-Luminosity LHC era. This report provides an update to the space and infrastructure requirements of the Facility, a result of integration studies carried out by CERN technical teams in conjunction with the FPF experimental community. [...]
CERN-PBC-Notes-2024-004.- Geneva : CERN, 2024 - 23. Fulltext: PDF;

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Impact of Vibration to HL-LHC Performance During the FPF Facility Construction / Gamba, Davide (CERN) ; Bartosik, Hannes (CERN) ; Guinchard, Michael (CERN) ; Osborne, John Andrew (CERN) ; Balazs, Kincso (CERN) ; Vendeuvre, Camille (CERN) ; Wenninger, Jorg (CERN) ; Widuch, Kacper (CERN)
The Forward Physics Facility (FPF) is a proposed experimental site intended to be positioned several hundred meters downstream from the ATLAS interaction point. It aims to capture long- lived particles and neutrinos that travel along the beam collision axis and fall outside the ATLAS detector’s range. [...]
CERN-PBC-Notes-2024-003.- Geneva : CERN, 2024 - 18. Fulltext: PDF;

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Stable 500 kW average power of infrared light in a finesse 35,000 enhancement cavity / Lu, Xin-Yi (Tsinghua University)
Advances in laser technology over the past 25 years have been impressive, in particular for the Ytterbium technology where nowadays kW-class laser systems are available. This technology also led to the possibility to provide hundreds of kilowatts of laser power by the use of enhancement cavities. [...]
CERN-PBC-Notes-2024-001.- Geneva : CERN, 2024 - 6. Fulltext: PDF;

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Systematic Errors of a ”frozen Spin” EDM measurement with electric and magnetic Fields due to imperfect Alignment of Fields / Cilento, Vera (CERN) ; Carli, Christian (CERN) ; Haj Tahar, Malek (CERN)
Many of the rings proposed to measure the Electric Dipole Moment (EDM) of charged particles rely on a combination of magnetic and electric fields bending the beam to fulfil the ”frozen spin” condition. Imperfect alignment of the two fields bending the beam is known to rotate the spin from the longitudinal into the vertical direction. [...]
CERN-PBC-Notes-2023-009.- Geneva : CERN, 28 - 15. Fulltext: PDF;

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Possible operational scenarios for a quasi-simultaneous operation of proton and ion beams in the North Area Experimental Areas / Charitonidis, Nikolaos (CERN) ; Banerjee, Dipanwita (CERN) ; Bernhard, Johannes (CERN) ; Van Dijk, Maarten (CERN) ; Nevay, Laurence James (CERN) ; Gatignon, Lau (Lancaster University (GB))
The implications of the experimental proposals for ion operation in the North Area post-LS3 are being studied within the framework of the Physics Beyond Colliders framework in collaboration with an ATS Future Ions Working Group established with the mandate to study possibilities and limitations of the CERN injector complex for delivering ions to the SPS experimental areas and the LHC post-LS3. This document describes three conceptual scenarios for "quasi-simultaneous" operation of protons and ions slowly extracted towards the North Area beam lines as a possible mean to optimize the overall beam delivery to the NA experiments. [...]
CERN-PBC-Notes-2023-008.- Geneva : CERN, 2023 - 6. CERN-PBC-NOTE-2023-008: PDF;

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Laser beam transport and stabilization considerations for the Gamma Factory proof-of-principle experiment / Granados, Eduardo (CERN) ; Dutheil, Yann (CERN) ; Marsh, Bruce (CERN) ; Arduini, Gianluigi (CERN)
The Gamma Factory proof-of-principle (GF PoP) experiment consists in colliding high intensity ultrafast laser pulses with ultra-relativistic partially stripped ion beams at the CERN Super Proton Synchrotron (SPS). The experiment represents the first demonstration of fast cooling of ultra- relativistic ion beams and high flux gamma ray production [...]
CERN-PBC-Notes-2023-007.- Geneva : CERN, 2023 - 19. Fulltext: PDF;

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Conceptual Design of a Neutral Beam Line for Phase 2 of the HIKE Experiment / Nevay, Laurence James (CERN) ; Van Dijk, Maarten (CERN) ; Gatignon, Lau (Lancaster University (GB)) ; Bernhard, Johannes (CERN)
CERN-PBC-Notes-2023-006.- Geneva : CERN, 2023 Fulltext: PDF;

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TT20 unsplit beam optics for dedicated ECN3 operation / Ramjiawan, Rebecca Louise (CERN) ; Velotti, Francesco Maria (CERN) ; Fraser, Matthew Alexander (CERN)
The Transfer Tunnel 20 (TT20) in the CERN North Area (NA) contains transfer lines TT21-25 to transport beam extracted from the Super Proton Synchrotron (SPS). The beam is shared between three primary production targets simultaneously using two sets of Lamberston septa magnets [...]
CERN-PBC-Notes-2023-005.- Geneva : CERN, 2023 - 10. Fulltext: PDF;

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P42 T4/XTAX transmission efficiency - FLUKA / Mazzola, Giuseppe (CERN) ; Esposito, Luigi Salvatore (CERN)
The studies reported here are part of the ECN3 Beam Delivery Task Force’s mandate. Designated by the PBC Study Group, the primary objective of the Task Force is to assess the technical feasibility of increasing the proton beam intensity transported along the P42 line to the ECN3 cavern of the North Area in order to satisfy the demands of a set of PBC experimental physics proposals. [...]
CERN-PBC-Notes-2023-004.- Geneva : CERN, 2023 - 15. Fulltext: PDF;

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Dynamic gas flow simulation for gas injection into the SMOG2 storage cell at LHCb / Lucarelli, Chiara (Universita e INFN, Firenze (IT))
CERN-PBC-Notes-2023-003.- Geneva : CERN, 2023 main document: PDF;

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