CERN Accelerating science


LHC MD 6945: Injection Power Transients / Karlsen-Baeck, Birk Emil (Sapienza Universita e INFN, Roma I (IT)) ; Argyropoulos, Theodoros (CERN) ; Butterworth, Andy (CERN) ; Calaga, Rama (CERN) ; Damerau, Heiko (CERN) ; Dlugosz, Dominika Agnieszka ; Karpov, Ivan (CERN) ; Timko, Helga (CERN) ; Zampetakis, Michail (CERN)
This note summarizes the procedure and results from the RF MD that was performed to study power transients and klystron saturation at injection. [...]
- 2024. - 12 p.
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Design and implementation of a new Controller for CERN’s sub-ppm stable Current source / Nappi, Valerio
This work describes the design and development of the controller of the CERN DCTT Calibrator (CDC), a critical component in the power converter controls system in CERN’s facilities [...]
CERN-THESIS-2023-335 - 134 p.

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Génération de trajectoires à la demande pour le contrôleur du Beam Wire-Scanner du CERN / Dieperink, Clément
CERN uses scanners in its particle accelerators to measure the position of particle beams [...]
CERN-THESIS-2023-331 - 78 p.

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Operational performance of crystal collimation with 6.37 $Z$ TeV Pb ion beams at the LHC / D'Andrea, M (CERN) ; Aberle, O (CERN) ; Bruce, R (CERN) ; Butcher, M (CERN) ; Di Castro, M (CERN) ; Cai, R (CERN) ; Lamas, I (CERN) ; Masi, A (CERN) ; Mirarchi, D (CERN) ; Redaelli, S (CERN) et al.
The concept of crystal collimation relies on the use of bent crystals to coherently deflect positively charged particles with suitable impact conditions by trapping them in the potential well generated by adjacent crystalline planes. The resulting deflection is much higher than what can be achieved by multiple scattering on amorphous materials. [...]
2024 - 16 p. - Published in : Phys. Rev. Accel. Beams 27 (2024) 011002 Fulltext: PDF;

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Acceptance Criteria Part B: LMQXFA cold mass and cryo-assembly / Carcagno, R (Fermilab)
This document specifies the acceptance criteria for the LMQXFA cold mass and cryoassembly. [...]
FERMILAB-TM-2815-TD ; LHC-LMQXFA-ES-0007 ; US-HiLumi-doc-1127.
- 16 p.
Fermilab Library Server - EDMS - Fulltext

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Effect of transverse compressive stress applied at room temperature on Nb$_{3}$Sn Rutherford cables / Lenoir, Gilles (CERN) ; Puthran, Kirtana (CERN ; KIT, Karlsruhe, IAP) ; Barth, Christian (CERN) ; Fleiter, Jérôme (CERN) ; Ballarino, Amalia (CERN)
The accelerator magnets for the high luminosity upgrade of the large Hadron collider use Nb$_{3}$Sn conductor to achieve the required in-field performance. To sustain the Lorentz forces during operation, a pre-compression is applied to the coils during the fabrication of the magnet. [...]
2024 - 14 p. - Published in : Supercond. Sci. Technol. 37 (2024) 025013 Fulltext: PDF;

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Development of Optics Measurement Methods for Circular Accelerators / Wegscheider, Andreas
Linear optics corrections in circular particle accelerators have achieved remarkable performance in the last years pushing the precision and accuracy of the measurement and correction of machine parameters further [...]
CERN-THESIS-2022-403 - 111 p.

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Advanced Loss Map Analysis for Performance Assessment of the LHC Collimation System / Ziliotto, Filippo (Universita e INFN, Padova (IT)) ; D'Andrea, Marco (CERN) ; Redaelli, Stefano (CERN) ; Van Der Veken, Frederik (CERN)
Due to the rapid progress of the LHC performance, it is essential to monitor the damage potential of the circulating beams. [...]
- 2023.
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Interpretable Fault Prediction for CERN Energy Frontier Colliders / Obermair, Christoph
The Large Hadron Collider (LHC) is the world’s highest energy particle collider, which has already delivered data for numerous physical discoveries [...]
CERN-THESIS-2023-321 - 151 p.

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In-situ radiological classification and characterization methodology of activated cables in particle accelerators / Dyrcz, Patrycja (CERN) ; Infantino, Angelo (CERN) ; Menaa, Nabil (CERN) ; El-Idrissi, Safouane (CERN) ; Tromel, Christophe (CERN) ; Vincke, Heinz (CERN)
The estimation of induced radioactivity and radiological classification of activated material is necessary throughout the life cycle of the Large Hadron Collider (LHC) accelerator. As part of the upgrade to HighLuminosity LHC (HL-LHC), radiation protection assessments need to be performed in order to estimate the radiological hazard during the dismantling activities of the LHC cables. [...]
2024 - 5 p. - Published in : Radiat. Phys. Chem. 216 (2024) 111439 Fulltext: PDF;

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