2023-03-16
07:28 |
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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2023-03-16
07:28 |
Fiber Bragg Grating Sensors as Beam-Induced Heating Monitor for the Central Beam Pipe of CMS
/ Fienga, Francesco (U. Naples (main) ; CERN) ; Beni, Noemi (CERN ; Debrecen, Inst. Nucl. Res.) ; Breglio, Giovanni (U. Naples (main) ; CERN) ; Buontempo, Salvatore (INFN, Naples ; CERN) ; Carra, Federico (CERN) ; Giordano, Francesco (CERN) ; Irace, Andrea (U. Naples (main)) ; Marrazzo, Vincenzo Romano (CERN ; U. Naples (main)) ; Salvant, Benoit (CERN) ; Sito, Leonardo (CERN ; U. Naples (main)) et al.
The passage of a high-intensity particle beam inside accelerator components generates heating, potentially leading to degradation of the accelerator performance or damage to the component itself. It is therefore essential to monitor such beam-induced heating in accelerators. [...]
2022 - 4 p.
- Published in : JACoW IBIC 2022 (2022) 28-31
Fulltext: PDF;
In : 11th International Beam Instrumentation Conference (IBIC 2022), Cracow, Poland, 11 - 15 Sep 2022, pp.28-31
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2023-03-16
07:28 |
Recent LHC SR Interferometer Simulations and Experimental Results
/ Butti, Daniele (CERN ; Royal Holloway, U. of London) ; Bravin, Enrico (CERN) ; Gibson, Stephen (Royal Holloway, U. of London) ; Trad, Georges (CERN)
At the CERN Large Hadron Collider (LHC), among the different systems exploiting Synchrotron Radiation (SR) for beam diagnostics, interferometry is under study as a non-invasive technique for measuring absolute beam transverse sizes. Extensive numerical simulations, recently completed for characterising the spatial coherence of the LHC SR source, facilitated the optimisation of the LHC interferometer design and the existing prototype system tested in the past has been refurbished to include the new simulation findings. [...]
2022 - 4 p.
- Published in : JACoW IBIC 2022 (2022) 88-91
Fulltext: PDF;
In : 11th International Beam Instrumentation Conference (IBIC 2022), Cracow, Poland, 11 - 15 Sep 2022, pp.88-91
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2023-03-16
07:28 |
The Diamond Beam Loss Monitoring System at CERN LHC and SPS
/ Calvo Giraldo, Eva (CERN) ; Effinger, Ewald (CERN) ; Gonzalez Berges, Manuel (CERN) ; Kral, Jiri (Prague, Tech. U.) ; Martínez Samblas, Javier (CERN) ; Morales Vigo, Sara (CERN) ; Salvachúa, Belen (CERN) ; Zamantzas, Christos (CERN)
The Large Hadron Collider (LHC) and the Super Proton Synchrotron (SPS) accelerators are equipped with 17 pCVD diamond based Beam Loss detectors at strategical locations where their nanosecond resolution can provide insights into the loss mechanisms and complement the information of the standard ionization chamber type detectors. They are used at the injection and extraction lines of the LHC and SPS, to analyse the injection or extraction efficiency, and to verify the timing alignment of other elements like kicker magnets. [...]
2022 - 5 p.
- Published in : JACoW IBIC 2022 (2022) 202-206
Fulltext: PDF;
In : 11th International Beam Instrumentation Conference (IBIC 2022), Cracow, Poland, 11 - 15 Sep 2022, pp.202-206
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2023-03-16
07:28 |
The Beam Loss Monitoring System after LHC Long Shutdown 2 at CERN
/ Saccani, Mathieu (CERN) ; Effinger, Ewald (CERN) ; Viganò, William (CERN) ; Zamantzas, Christos (CERN)
Most of the LHC systems at CERN were updated during the Long Shutdown 2, from December 2018 to July 2022, to prepare the accelerator for High-Luminosity. The Beam Loss Monitoring system is a key part of the LHC’s instrumentation for machine protection and beam optimisation by producing continuous and reliable measurements of beam losses along the accelerator. [...]
2022 - 5 p.
- Published in : JACoW IBIC 2022 (2022) 220-224
Fulltext: PDF;
In : 11th International Beam Instrumentation Conference (IBIC 2022), Cracow, Poland, 11 - 15 Sep 2022, pp.220-224
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2023-03-16
07:28 |
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2023-03-16
06:37 |
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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2023-03-16
06:37 |
LHC Schottky Spectrum from Macro-Particle Simulations
/ Lannoy, Christophe (CERN ; Ecole Polytechnique, Lausanne) ; Alves, Diogo (CERN) ; Łasocha, Kacper (Jagiellonian U.) ; Mounet, Nicolas (CERN) ; Pieloni, Tatiana (Ecole Polytechnique, Lausanne)
We introduce a method for building Schottky spectra from macro-particle simulations performed with the PyHEADTAIL code, applied to LHC beam conditions. In this case, the use of a standard Fast Fourier Transform (FFT) algorithm to recover the spectral content of the beam becomes computationally intractable memory-wise, because of the relatively short bunch length compared to the large revolution period. [...]
2022 - 5 p.
- Published in : JACoW IBIC 2022 (2022) 308-312
Fulltext: PDF;
In : 11th International Beam Instrumentation Conference (IBIC 2022), Cracow, Poland, 11 - 15 Sep 2022, pp.308-312
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2023-02-28
16:16 |
ATLAS Week (Feb 13-17) poster, ATLAS Tile Calorimeter Charge Injection System (CIS) and L1Calo
/ Li, Mengyang (University of Chicago (US)); Camporeale, Peter Thomas (University of Chicago (US))
Our work on the Charge Injection System (CIS) calibrates the front-end electronics of the ATLAS Tile Calorimeter (TileCal), allowing us to diagnose hardware-level problems. In each channel, we calculate and monitor the stability of the CIS constant, which relates ADC counts to the charge of the observed hadron, and validate calibration runs. [...]
ATLAS-COM-CONF-2023-003.-
Geneva : CERN, 2023 - 1 p.
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2023-02-07
17:53 |
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