CERN Accelerating science

All CERN Accelerators documents

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2025-02-08
09:25
Absolute beam current measurement for slow extracted beams at CERN's North Area facility / Tan, Jocelyn (CERN) ; Schmidl, Frank (U. Jena (main)) ; Khatri, Ghanshyambhai (CERN) ; Crescimbeni, Lorenzo (U. Jena (main) ; Darmstadt, GSI) ; Schwickert, Marcus (Darmstadt, GSI) ; McLean, Mark (CERN) ; Sieber, Thomas (Darmstadt, GSI) ; Stoehlker, Thomas (Darmstadt, GSI ; Helmholtz Inst., Jena) ; Koettig, Torsten (CERN) ; Tympel, Volker (Helmholtz Inst., Jena ; Darmstadt, GSI)
The North Area facility (NA), built in the 1970s at CERN, hosts several secondary beam lines for a large variety of physics experiments: Neutrino Platform, Dark matter, high energy physics, R&D;, detector validation etc. 400 GeV/c primary proton beams, extracted from the SPS ring, are split along the transfer lines to fire on 4 targets and serve the users with secondary particles such as e-, e+, muons, pions, hadrons, kaons... [...]
2024 - 4 p. - Published in : JACoW IBIC 2024 (2024) THP11 Fulltext: PDF;
In : 13th International Beam Instrumentation Conference (IBIC 2024), Beijing, China, 9-13 Sep 2024, pp.THP11

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2025-02-08
09:25
First results with a Base Band Tune (BBQ) measurement system at Solaris / Gasior, Marek (CERN) ; Wawrzyniak, Adriana (Unlisted, PL) ; Szczepaniak, Mateusz (Unlisted, PL) ; Panas, Roman (Unlisted, PL)
All CERN circular accelerators are equipped with Base Band Tune (BBQ) measurement systems, based on the direct diode detection technique, allowing to measure the tunes of hadron beams by employing their residual betatron oscillations or very small external excitation. In the framework of the Future Circular Collider (FCC) project, a study was launched to optimise such a system for operation with short electron bunches. [...]
2024 - 5 p. - Published in : JACoW IBIC 2024 (2024) THP59 Fulltext: PDF;
In : 13th International Beam Instrumentation Conference (IBIC 2024), Beijing, China, 9-13 Sep 2024, pp.THP59

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2025-02-08
09:25
BGC monitor: first year of operation at the LHC / Zhang, Hao (Cockcroft Inst. Accel. Sci. Tech.) ; Rossi, Adriana (CERN) ; Pasquinom, C (CERN) ; Welsch, Carsten (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Sequeiro, Cristina (CERN) ; Butti, Daniele (CERN) ; Schneider, Gerhard (CERN) ; Sidorowski, Krystian (CERN) ; Ady, Marton (CERN) ; Sameed, Muhammed (CERN) et al.
The Beam Gas Curtain (BGC) monitor was installed in the beam one of the Large Hadron Collider (LHC) during Long Shutdown 2 (LS2) and the Year-End Technical Stop (YETS) 2022. The monitor detects the fluorescence signal generated due to the interaction between the charged particle beams in the LHC and the neon atoms in the supersonic gas curtain. [...]
2024 - 3 p. - Published in : JACoW IBIC 2024 (2024) FRAC2 Fulltext: PDF;
In : 13th International Beam Instrumentation Conference (IBIC 2024), Beijing, China, 9-13 Sep 2024, pp.FRAC2

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2025-02-08
09:25
Electron bunch position determination using a high frequency button beam position monitor in the AWAKE facility / Spear, Bethany (JAI, UK) ; Pakuza, Collette (CERN) ; Wendt, Manfred (CERN) ; Krupa, Michal (CERN) ; Burrows, Philip (JAI, UK) ; Liu, Shengli (Fermilab ; TRIUMF) ; Mazzoni, Stefano (CERN) ; Lefevre, Thibaut (CERN)
The AWAKE facility uses novel proton beam-driven plasma wakefields to accelerate electron bunches over 10m of Rubidium plasma. Precise monitoring of 2 diverse beam types necessitates an electron beam position monitor (BPM) working in a frequency regime of tens of GHz. [...]
FERMILAB-CONF-24-0989-AD.- 2024 - 4 p. - Published in : JACoW IBIC 2024 (2024) TUP21 Fulltext: document - PDF; d8c1a341c77874ee9143d96ec46bdb45 - PDF; External link: Fermilab Library Server
In : 13th International Beam Instrumentation Conference (IBIC 2024), Beijing, China, 9-13 Sep 2024, pp.TUP21

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2025-02-08
09:25
New beam loss monitor ionisation chambers engineering / Schneider, Gerhard (CERN) ; Tzamarias, Dion Efstathios O (CERN) ; Gudkov, Dmitry (LBL, Berkeley) ; Veness, Raymond (CERN) ; Griffiths, Victoria (CERN) ; Bastos, Wilker (CERN) ; Vigano', William (CERN)
More than 4000 Beam Loss Monitors (BLM) systems are operating at CERN. About 93% of them are installed in the LHC machine. [...]
2024 - 3 p. - Published in : JACoW IBIC 2024 (2024) THP32 Fulltext: PDF;
In : 13th International Beam Instrumentation Conference (IBIC 2024), Beijing, China, 9-13 Sep 2024, pp.THP32

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2025-02-08
09:25
A systematic investigation of beam losses and position reconstruction techniques measured with a novel oBLM at CLEAR / King, Montague (CERN ; Liverpool U.) ; Christie, Alexander (Oxford U.) ; Salvachua, Belen (CERN) ; Welsch, Carsten (Liverpool U.) ; Effinger, Ewald (CERN) ; Meyer, Jean Michel (CERN) ; Esteban Felipe, Jose (CERN) ; Wolfenden, Joseph (Cockcroft Inst. Accel. Sci. Tech.) ; Korysko, Pierre (Oxford U.) ; Benitez, Sara (CERN) et al.
Optical Beam Loss Monitors (oBLMs) allow for cost-efficient and spatially continuous measurements of beam losses at accelerator facilities. A standard oBLM consists of several tens of meters of optical fibre aligned parallel to the beamline, coupled to photosensors at either or both ends. [...]
2024 - 5 p. - Published in : JACoW IBIC 2024 (2024) FRBC2 Fulltext: PDF;
In : 13th International Beam Instrumentation Conference (IBIC 2024), Beijing, China, 9-13 Sep 2024, pp.FRBC2

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2025-02-08
09:25
Non-destructive beam profile measurements with an Ionisation Profile Monitor (IPM) based on Timepix3&4 Hybrid Pixel Detectors (HPDs) / McLean, Mark (CERN) ; Pasquino, Chiara (CERN) ; Fleisig, Clara (CERN) ; Cabrera, Gabriela (CERN) ; Khatri, Gunn (CERN) ; Storey, James (CERN) ; Joul, Juri (CERN) ; Ramos, Maria Teresa (CERN) ; Andrezza, William (CERN)
Beam Gas Ionization monitors have been in operational use in the CERN PS for two years now, and they were installed in the SPS this year. An overview of the operating principal of the instruments is presented, followed by an update on their development. [...]
2024 - 4 p. - Published in : JACoW IBIC 2024 (2024) WEP15 Fulltext: PDF;
In : 13th International Beam Instrumentation Conference (IBIC 2024), Beijing, China, 9-13 Sep 2024, pp.WEP15

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2025-02-07
17:47
An overview of progress with the study of a structured laser beam for alignment / Niewiem, Witold Grzegorz (ETH Zurich (CH)) ; Mergelkuhl, Dirk (CERN) ; Gayde, Jean-Christophe (CERN)
The Structured Laser Beam (SLB) is a pseudo-non- diffractive optical beam characterized by the low divergence of the Inner Core (IC), down to 10 μrad, and the presence of concentric rings, with the most prominent being the Outer Ring (OR). [...]
CERN-ACC-NOTE-2024-0025.
- 2024 - 6.

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2025-02-07
11:07
Appendix - PPbar beam parameter list. Beam parameters for the basic scheme
CERN-SPS-AC-79-18-Appendix - 1979 - 8.

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2025-02-07
09:50
Addendum to the specification of the quadrupole magnets for the SPS beam transfer lines
CERN-LabII-BT-AH-NS-EEK-D-12-Add - 1973 - 4.

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