CERN Accelerating science

Accelerators & Technology Sector Notes

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SPS Operation and Future Proton Sharing scenarios for the SHiP experiment at the BDF facility / Bartosik, Hannes (CERN) ; Arduini, Gianluigi (CERN) ; Fraser, Matthew Alexander (CERN) ; Gatignon, Lau (CERN) ; Goddard, Brennan (CERN) ; Jacobsson, Richard (CERN) ; Kain, Verena (CERN) ; Koukovini Platia, Eirini (CERN)
The Search for Hidden Particles (SHiP) experiment aims at acquiring a total of 4e19 protons on target (PoT) per year. [...]
- 2018. - 15 p.

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LHC Availability 2018: Proton Physics / Todd, Benjamin (CERN) ; Ponce, Laurette (CERN) ; Apollonio, Andrea (CERN) ; Walsh, David John (CERN)
This document summarises the LHC machine availability for the period of Restart to Technical Stop 3 (TS3) in 2018. [...]
- 2018. - 23 p.
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Space charge impedance and electromagnetic fields in elliptical vacuum chambers / Migliorati, Mauro (Sapienza Universita e INFN, Roma I (IT)) ; Biancacci, Nicolo (CERN) ; Masullo, Maria Rosaria (Universita e sezione INFN di Napoli (IT)) ; Palumbo, Luigi (Sapienza Universita e INFN, Roma) ; Vaccaro, Vittorio (Universita e sezione INFN di Napoli (IT))
Starting from the electric fields produced by a point charge and a dipole travelling inside a circular vacuum chamber, in this paper we derive a formalism for a complete set of equations that describe the electromagnetic fields and the longitudinal and transverse coupling impedance arising by the interactions of a beam with a perfectly conducting pipe in the case of elliptic geometry [...]
- 2018. - 23 p.
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Derivation of the Energy Loss for a Particle passing through an Equipment, from both Beam Impedance Concepts and Electro-Technical Theory / Berrig, Olav Ejner ; Appelquist, Isaac (Aalborg University)
This note will show that the energy lost when a beam moves through an equipment, when calculated with the wake field approach (which is a beam impedance concept), is the same as when calculated with electro-technical theory [...]
- 2018. - 24 p.
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Summary of charge breeding investigations for a future 11C treatment facility / Pitters, Johanna ; Breitenfeldt, Martin ; Pahl, Hannes (Ruprecht Karls Universitaet Heidelberg (DE)) ; Pikin, Alexander (University of Manchester (GB)) ; Wenander, Fredrik John Carl (CERN)
In this report we discuss the possibilities of using a charge breeding scheme based on an Electron Beam Ion Source for beam preparation of a radioactive 11C beam for hadron therapy. [...]
- 2018.

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Crystal Collimation Cleaning Measurements with Lead Ion Beams in LHC / Rossi, Roberto (Sapienza Universita e INFN, Roma I (IT)) ; Aberle, Oliver (CERN) ; Andreassen, Odd Oyvind (CERN) ; Butcher, Mark (CERN) ; Dionisio Barreto, Cristovao Andre (CERN) ; Masi, Alessandro (CERN) ; Mirarchi, Daniele (University of Manchester (GB)) ; Montesano, Simone (Universita e INFN, Bologna (IT)) ; Lamas Garcia, Inigo (CERN) ; Redaelli, Stefano (CERN) et al.
During this MD, performed on November the 26th, 2016, bent silicon crystals were tested with lead ion beams for a possible usage of crystal-assisted collimation [...]
- 2016. - 12 p.
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Integration of Wireless Mobile Equipment in Vacuum Supervisory Applications / Blanchard, Sebastien (CERN) ; Ferreira, Rodrigo (CERN) ; Gomes, Paulo (CERN)
At first sight, the data acquisition and remote control of equipment temporary used during the commissioning phase of a vacuum system seems not to be a high priority requirement [...]
- 2018. - 14 p.

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TDIS pressure profile simulations after LS2 / Ribes Metidieri, Patricia (University of Barcelona (ES)) ; Yin Vallgren, Christina (CERN) ; Skripka, Galina (CERN) ; Iadarola, Giovanni (CERN) ; Bregliozzi, Giuseppe (CERN)
During the LS2 (Long Shutdown 2), the current TDI (Beam Absorber for Injection) will be replaced by the new so called, TDIS (Beam Absorber for Injection Segmented). [...]
- 2018. - 18 p.
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Construction of TT10-SPS Injection Region Model and Following Aperture Studies / Mahon, Aveen (McGill University, (CA)) ; Fraser, Matthew Alexander (CERN) ; Velotti, Francesco Maria (CERN)
The main objective of this project was to model the injection region going from the transfer line TT10 into the SPS. [...]
- 2018. - 21 p.
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Radiation levels in the LHC during the 2015 Pb-Pb and 2016 p-Pb run and mitigation strategy for the electronic systems during HL-LHC operation / Martinella, Corinna (University of Jyvaskyla (FI)) ; Bahamonde Castro, Cristina (Ministere des affaires etrangeres et europeennes (FR)) ; Lechner, Anton (CERN) ; Danzeca, Salvatore (CERN) ; Kadi, Yacine (CERN) ; Brugger, Markus (CERN) ; Garcia Alia, Ruben (CERN)
During the Pb-Pb and p-Pb operations of LHC, high localized beam losses can induce a risk of failure for the electronic systems installed in the tunnel. [...]
- 2018. - 13 p.
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LHC MD Notes (118)