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Assessing the Performance of the New Beam Wire Scanners for the CERN LHC Injectors
/ Di Carlo, Salvatore (CERN) ; Andreazza, William (CERN) ; Belohrad, David (CERN) ; Emery, Jonathan (CERN) ; Esteban Felipe, Jose (CERN) ; Goldblatt, Aurélie (CERN) ; Gudkov, Dmitry (CERN) ; Guerrero, Ana (CERN) ; Jackson, Stephen (CERN) ; Lacarrere, Guillaume (CERN) et al.
Reliably measuring the transverse beam profile in the LHC injector chain is essential for the operation of the CERN accelerator complex. This report aims to assess the reliability, stability, and reproducibility of a new generation of beam wire scanners developed at CERN in the framework of the LHC Injectors Upgrade (LIU). [...]
2022 - 4 p.
- Published in : JACoW IBIC 2022 (2022) 443-446
Fulltext: PDF;
In : 11th International Beam Instrumentation Conference (IBIC 2022), Cracow, Poland, 11 - 15 Sep 2022, pp.443-446
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Commissioning of the LHC Injectors BWS Upgrade
/ Emery, Jonathan (CERN) ; Andreazza, William (CERN) ; Belohrad, David (CERN) ; Di Carlo, Salvatore (CERN) ; Esteban Felipe, Jose C (CERN) ; Goldblatt, Aurélie (CERN) ; Gudkov, Dmitry (CERN) ; Guerrero, Ana (CERN) ; Jackson, Stephen (CERN) ; Lacarrere, Guillaume O (CERN) et al.
A novel generation of fast Beam Wire Scanners (BWS), developed in the framework of the LHC Injectors Upgrade (LIU), has been recently deployed in the 3 LHC injector synchrotrons, accelerating protons from 160 MeV to 450 GeV, during the 2019-2020 LHC long shutdown. The monitors feature high precision motor controller, high resolution wire position monitoring and wide dynamic range secondary particles detectors. [...]
JACoW, 2021 - 5 p.
- Published in : JACoW IBIC 2021 (2021) 239-243
Fulltext: PDF;
In : 10th International Beam Instrumentation Conference (IBIC 2021), Online, Korea, 13 - 17 Sep 2021, pp.239-243
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The Digital Signal Processing Chain of the CERN LIU BWS
/ Belohrad, David (CERN) ; Emery, Jonathan (CERN) ; Esteban Felipe, Jose (CERN) ; Goldblatt, Aurélie (CERN) ; Guerrero, Ana (CERN) ; Martin Nieto, Miguel (CERN) ; Roncarolo, Federico (CERN)
Between 2019 and 2023, as part of the LHC Injectors Upgrade (LIU), a major renovation of the CERN wire scanners (BWS) was performed. The main driving force was to prepare the wire scanners for the High-Luminosity LHC (HL-LHC), during which the instantaneous luminosity is expected to double, to around 5× 10³⁴cm⁻²s⁻¹. [...]
2023 - 5 p.
- Published in : JACoW IBIC 2023 (2023) 288-292
Fulltext: PDF;
In : 12th International Beam Instrumentation Conference (IBIC 2023), Saskatoon, Canada, 10 - 14 Sep 2023, pp.288-292
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Commissioning the New CERN Beam Instrumentation Following the Upgrade of the LHC Injector Chain
/ Roncarolo, Federico (CERN) ; Bart Pedersen, Stephane (CERN) ; Belleman, Jeroen (CERN) ; Belohrad, David (CERN) ; Bozzolan, Michele (CERN) ; Bracco, Chiara (CERN) ; Di Carlo, Salvatore (CERN) ; Emery, Jonathan (CERN) ; Goldblatt, Aurélie (CERN) ; Guerrero, Ana (CERN) et al.
The LHC injectors Upgrade (LIU) program has been fully implemented during the second long shutdown (LS2), which took place in 2019-20. In this context, new or upgraded beam instrumentation was developed to cope with H⁻ beam in LINAC4 and the new Proton Synchrotron Booster (PSB) injection systems which would provide high brightness proton beams in the rest of the injector complex. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 976-979
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.976-979
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PSB H0-H⁻ Monitor Calibration and Commissioning
/ Navarro Fernandez, Araceli (CERN) ; Belohrad, David (CERN) ; Bracco, Chiara (CERN) ; Renner, Elisabeth (CERN) ; Roncarolo, Federico (CERN) ; Tassan-Viol, Jean (CERN)
During the LHC Long Shutdown 2 (LS2), the H⁻ LINAC4 replaced the proton LINAC2 as Proton Synchrotron Booster (PSB) injector. In each of the four PSB rings, the injection region was upgraded to accommodate the necessary elements for a proper H⁻ charge exchange injection systems. [...]
JACoW, 2021 - 5 p.
- Published in : JACoW IBIC 2021 (2021) 429-433
Fulltext: PDF;
In : 10th International Beam Instrumentation Conference (IBIC 2021), Online, Korea, 13 - 17 Sep 2021, pp.429-433
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Fast Spill Monitor Studies for the SPS Fixed Target Beams
/ Roncarolo, Federico (CERN) ; Arrutia Sota, Pablo Andreas (CERN) ; Belohrad, David (CERN) ; Bergamaschi, Michele (CERN) ; Calvo Giraldo, Eva (CERN) ; Effinger, Ewald (CERN) ; Fraser, Matthew (CERN) ; Kain, Verena (CERN) ; Martin Nieto, Miguel (CERN) ; Mazzoni, Stefano (CERN) et al.
At the CERN Super Proton Synchrotron (SPS) the proton beam is supplied to the fixed target experiments in the North Area facility (NA) via a slow extraction process, taking place at 400 GeV. The monitoring of the spill quality during the extraction, lasting 4.8 seconds with the present SPS setup, is of high interest for minimising beam losses and providing the users with uniform proton-on-target rates. [...]
2022 - 5 p.
- Published in : JACoW IBIC 2022 (2022) 522-526
Fulltext: PDF;
In : 11th International Beam Instrumentation Conference (IBIC 2022), Cracow, Poland, 11 - 15 Sep 2022, pp.522-526
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A New Luminosity Monitor for the LHC Run 3
/ Mazzoni, Stefano (CERN) ; Andreazza, William (CERN) ; Balci, Elif (CERN) ; Belohrad, David (CERN) ; Bravin, Enrico (CERN) ; Chritin, Nicolas (CERN) ; Esteban Felipe, Jose (CERN) ; Lefèvre, Thibaut (CERN) ; Martin Nieto, Miguel (CERN) ; Palm, Marcus (CERN)
The Beam Rate of Neutrals (BRAN) is a monitor that provides a relative luminosity measurement for the four LHC experiments. BRANs are used during operations as a tool to find and optimise collision and to cross-check experiments luminosity monitors. [...]
2022 - 5 p.
- Published in : JACoW IBIC 2022 (2022) 163-167
Fulltext: PDF;
In : 11th International Beam Instrumentation Conference (IBIC 2022), Cracow, Poland, 11 - 15 Sep 2022, pp.163-167
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Matching Studies Between the CERN PSB and PS Using Turn-by-Turn Beam Profile Acquisitions with a Residual Beam Gas Ionisation Monitor
/ Fraser, Matthew (CERN) ; Coly, Marcel (CERN) ; Guerrero, Ana (CERN) ; Huschauer, Alexander (CERN) ; Jensen, Steen (CERN) ; Levasseur, Swann (CERN) ; Roncarolo, Federico (CERN) ; Rossi, Adriana (CERN) ; Sandberg, Hampus (CERN) ; Storey, James (CERN)
In the framework of the LHC Injectors Upgrade project, the Beam Gas Ionisation (BGI) profile monitors installed in the Proton Synchrotron (PS) were fitted with a gas injection system capable of boosting the signal rate high enough to capture single turn acquisitions immediately after injection. This contribution reports on the studies carried out during the beam commissioning of the BGI system in a turn-by-turn matching monitor mode for its eventual implementation in an optimisation framework to preserve emittance during transfer between the PS Booster and PS. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 2161-2164
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2161-2164
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