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Accelerators & Technology Sector Notes

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2024-12-20
12:11
Long-range beam-beam mitigation for round optics / Fartoukh, Stephane (CERN) ; Kostoglou, Sofia (CERN)
When colliding high intensity bunch trains at low beta*, a sufficiently large crossing angle needs to be imposed at the interaction point (IP) in order to separate the two beams before and after the collision, and mitigate the so-called long-range beam-beam (BBLR) effect, which otherwise can be very detrimental to the beam lifetime. [...]
CERN-ACC-NOTE-2023-0029. - 2023

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2024-12-17
11:08
Highlights of the diversity and inclusion session at the LLRF22 workshop / Angoletta, Maria Elena (CERN) ; Coletta, Melania (CERN) ; Spycher, Melina (PSI) ; Doolittle, Larry (LBNL)
Developing Low Level Radio Frequency (LLRF) systems for accelerators requires teams with skills in a variety of areas such as beam dynamics, analogue/digital electronics, firmware/software engineering and feedback theory. [...]
CERN-ACC-NOTE-2024-0024. - 2024

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2024-11-12
14:18
CONTINUOUS DATA-DRIVEN CONTROL OF THE GTS-LHC ION SOURCE AT CERN / Kuchler, Detlef (CERN) ; Kain, Verena (CERN) ; Bruchon, Niky ; Rodriguez Mateos, Borja (Universitat Politecnica Catalunya (ES)) ; Schenk, Michael (CERN)
Recent advances with the CERN infrastructure for machine learning allow to deploy state-of-the-art data-driven control algorithms for stabilising and optimising particle accelerator systems. [...]
CERN-ACC-NOTE-2024-0023. - 2024

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2024-11-12
14:11
LIGHT IONS FROM THE GTS-LHC ION SOURCE FOR FUTURE PHYSICS AT CERN / Kuchler, Detlef (CERN) ; Bhaskar, Bichu ; Bellodi, Giulia (CERN) ; Slupecki, Maciej (Helsinki Institute of Physics (FI)) ; Scrivens, Richard (CERN)
Starting from 2028, physics programmes using ions at CERN have requested lighter ions than the lead usually produced. [...]
CERN-ACC-NOTE-2024-0022. - 2024 - 3.

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2024-11-08
11:44
The Acceptance Box - A Simple Diagnostics Tool for Source Optimization and Transverse Beam Matching / Koopmans, Marten Henrik (CERN) ; Lallement, Jean-Baptiste (CERN) ; Lombardi, Alessandra (CERN) ; Marchetti, Emanuele (Politecnico di Milano (IT)) ; Pasino, Eleonora (Università degli Studi e INFN Milano (IT)) ; Sargsyan, Edgar (CERN)
The measurement of the emittance and Twiss parameters of a low to medium energy ion beam is a time intensive procedure and requires special hardware as well as data acquisition and analysis. [...]
CERN-ACC-NOTE-2024-0021. - 2024
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2024-11-06
14:12
Future Ions in the CERN Accelerator Complex WG: Post-LS3 NA61/SHINE light ion beam requirements feasibility study: source operation, radiation protection impact in LINAC 3, LEIR and PS and risk assessment in LEIR / Alemany Fernandez, Reyes (CERN) ; Chapuis, Didier (CERN) ; Kuchler, Detlef (CERN) ; Lang, Thibaut Michael (CERN) ; Morand, Boris (CERN) ; Slupecki, Maciej (CERN) ; Widorski, Markus (CERN)
The NA61/SHINE experiment is approved until Long Shutdown 3. [...]
CERN-ACC-NOTE-2024-0020. - 2024
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2024-10-30
15:31
LHC Availability Report 2023 / Felsberger, Lukas (CERN) ; Asko, Anti (CERN) ; Heron, Jack (CERN) ; Hostettler, Michi (CERN) ; Mikulec, Bettina (CERN) ; Uythoven, Jan (CERN) ; Wollmann, Daniel (CERN)
This document summarises the LHC availability during 2023 and compares it to previous years. [...]
CERN-ACC-NOTE-2024-0019. - 2024 - 22.
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2024-10-29
15:25
Introduction to the Accelerator Control System 2023 Edition / Deghaye, Stephane (CERN) ; Fortescue, Eve (CERN)
This document is an attempt to fill the gap between the Control System, as provided by the Controls groups, and anybody who needs to work with the Control System. [...]
CERN-ACC-NOTE-2024-0018. - 2024 - 224.
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2024-10-15
13:51
Report from LHC MD 6863: Amplitude Detuning Corrections from Feed-Down / Dilly, Joschua Werner (CERN) ; Le Garrec, Mael (Goethe University Frankfurt (DE)) ; Maclean, Ewen Hamish (CERN) ; Van Riesen-Haupt, Leon (EPFL - Ecole Polytechnique Federale Lausanne (CH)) ; Tomas Garcia, Rogelio (CERN)
Report of the MD6863 performed on the 24th and 25th of June 2022 to establish new corrections for the dodecapole correctors in LHC IP1 and IP5 to mitigate feed-down effects of high-order errors to amplitude detuning. [...]
CERN-ACC-NOTE-2023-0028. - 2023 - 13.
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2024-09-23
13:55
Proton beam jitter estimate for AWAKE Run2c / Velotti, Francesco Maria (CERN) ; Bencini, Vittorio (John Adams Institute for Accelerator Science (GB))
Summary The aim of AWAKE Run 2 is to demonstrate the possibility of scaling the experiment for high energy physics, i.e. [...]
CERN-ACC-NOTE-2024-0017. - 2024.

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LHC MD Notes (181)