Inside this issue: Editorial - Lars Jensen, Safety communication – J. Luis Barea- Saavedra, LHC BGV Demonstrator - Andreas Alexopoulos et al, Carbon coating, robotics and rapid prototyping – Ole Gunnar Sveen, New Strategy and Technology for Operational GUIs – Vito Baggiolini, LHC access system renovation during LS2 - Timo Hakulinen
Inside this issue: Editorial - Lars Jensen, Safety communication – J. Luis Barea- Saavedra, PJAS contracts – C. Heighton, Status of the FCC-hh study – S. Arsenyev, Data privacy considerations – K. Sigerud, Reminder for deadlines and BE news-letter correspondents
Paul Collier's End of Year 2017 presentation to the Beams Department
End of Year Presentation of Paul Collier to the Beams Department.
Inside this issue: Editorial - Lars Jensen, LEIR electron-cloud studies (D. Gamba et al), safety (balisage/beaconing) M. Tavlet et al, Different kind of outreach - L. V. Joergensen, Voyage au bout du monde - M. Tavlet.
The Beams Department hosts the Groups responsible for the beam generation, acceleration, diagnostics, controls and performance optimization for the whole CERN accelerator complex. This Report describes the 2017 highlights for the BE Department.
Inside this issue: Editorial - Lars Jensen, Accidentologie dans BE - L.F. Andre (BE-ASR), PS beam loss reduction by barrier buckets - M Vadai (BE-RF), Directory Service in the Controls Middleware (CMW) infrastructure - K. Kaczkowski (BE-CO), Identification of instability sources in PSB and LEIR - E. Koukovini-Platia (BE-ABP)
Inside this issue: Editorial - Lars Jensen, A look towards future accelerators - M. Lamont BE-HDO, High performance computing for beam simulations - G. Rumolo et al, BGI instrument for the PS machine - J. Storey et al
Inside this issue: Editorial - Lars Jensen, Kiosks for printing visitor badges - P. Martel, R. Nunes and T. Riesco BE-ICS, Welcoming new arrivals in the Beams Department - J. Kotzian BE-HDO, Planning Manager and Dashboard - T. Hesselberg and E. Matli BE-OP
The beam emittance is a crucial parameter of an accelerator to evaluate the performance of the machine. This is in particular important for the HL-LHC upgrade. To compute the beam emittance, the beam profile has to be measured. This can be done with Wire Scanners, but the Wire Scanner setting has to be chosen carefully to obtain accurate results. Systematic measurements of the beam profile and intensity have been done with the Wire Scanner. An empirical formula, which could be used to to predict optimal operational conditions for the Wire Scanner, has been tested and optimal operational photomultiplier gain range has been proposed for the measured beams.
Inside this issue: Editorial - Lars Jensen, Waste Heat Recovery at CERN - Matias Peljo and Brad Schofield BE-ICS, Mon voyage aux USA - Aurelie Goldblatt, Improvement of Safety Awareness for CERN Beam Facilities - Dario Carloni and Marc Tavlet, First Beam Dynamics Results from SPS Crab Cavities - R. Calaga (BE-RF), L. Carver (BE-ABP) and T. Levens (BE-BI)
Construction of a Kubernetes cluster in the CERN Technical Network and automating its deployment with Ansible
This report describes how the cluster deployed in the Technical Network works and how to deploy it in other machines. Firstly, the base technologies such as Docker, Kubernetes, and Ansible are explained. Secondly, the methodology followed during the development of the project is described. Thirdly, how it works and the Ansible play-books structure, and fourthly, the manual in which how to install the cluster and do some usual operations is explained. Finally, the results showing the improvement in time, and the difficulties found during the project.
This report deals with the remote display forwarding software Xpra and its possible use at CERN. It shows the various possibilities and limits of Xpra when employed within an industrial control setting and concludes about the ability of Xpra as a potential replacement for Windows Terminal Servers
LHCINDIV beam document Phase difference of the RF system in PS during accelerate PS FTA&FTN; line
Editorial - L. Jensen, Safety management for extended projects - C. Gaignant, G. Rumolo et al, Accelerator Schedule Management - B. Urbaniec, Scintillating fibre beam monitor - I. Ortega Ruiz, Trainees in the BE Department - J. Kotzian, Reminder of deadlines, BE news-letter contacts.
Inside this issue: Editorial - L. Jensen, The HL-LHC crab cavities - G. Vandoni et al, My work as BE DAO - J. Kotzian, Diamond BLMs for LHC collimation - C. Xu et al, LINAC4 from commissioning to reliability and beam quality run - A. Lombardi et al, "Flip-dot" display in the AD control room - P. Freyermouth, CERN welcome event, Remind of deadlines, BE news-letter contacts.
Inside this issue: Introduction - Paul Collier; Editorial – Lars Jensen, The HL-LHC Collimation System and the Impedance Challenge – S. Antipov et al BE-ABP; Re-cabling for injectors - S. Easton BE-OP; Teaching a semester in Africa - U. Raich BE-BI; Distributed I/O Tier and radiation-tolerant Fieldbus - G. Daniluk BE-CO; HR matters - J. Kotzian; BE Newsletter contacts.
The Beams Department hosts the Groups responsible for the beam generation, acceleration, diagnostics, controls and performance optimization for the whole CERN accelerator complex. This Report describes the 2016 highlights for the BE Department.
Two simple systems with high relevance for accelerator physics have been studied in detail in the context of this Summer Student Project. These systems describe the motion under the influence of detuning with amplitude due to non-linear magnets and an external, time-dependent force of dipolar or quadrupolar nature.Two simple systems with high relevance for accelerator physics have been studied in detail in the context of this Summer Student Project. These systems describe the motion under the influence of detuning with amplitude due to non-linear magnets and an external, time-dependent force of dipolar or quadrupolar nature.
A cylindrical pillbox cavity is characterized and its principal parameters, such as the cut-off frequencies of the modes, the quality factor and R/Q figure, are calculated. Additionally, these measurements are compared with an analytical analysis and with a simulation with the software CST Studio to determine how precise they are.